Mr. Wesley Gary's 1st patent gained the attention of Harper's
magazine and an experiment was developed demonstrating it but,
it is Gary's 2nd patent which shows a simple design, easily
duplicated:
It is as simple as putting 2 permanent magnets facing
each other so that they attract then, put a small
electromagnet between them, with 2 sets of contacts mounted so
that as it approaches either magnet, its poles are reversed
and it is repulsed back toward the other - with a lot of
force!
Gary's 2nd patent
U.S. Patent 190,206
(May 1, 1877)
Improvement in Electromagnetic Motors
Wesley W. Gary
To all whom it may concern:
Be it known that I, Wesley W. Gary, of Huntington, in the county
of Huntington and State of Pennsylvania, have invented certain
Improvements in Electric Motors, of which the following is a
specification.
My invention consists in the use of a reciprocating
electromagnet, the poles of which are changed at each movement,
between two permanent magnets arranged with their reverse poles
opposite each other; in a peculiar arrangement of devices for
reversing the current, and in other details hereinafter describe.
The object of my invention is to apply and fully utilize, in an
electric motor, the power of permanent magnets, and to develop from
them the greater part of the power, so that motors of great power may
be actuated by means of small electromagnets, and a correspondingly
small expenditure of battery power.
This end I attain by arranging two permanent magnets at a short distance apart, with
the negative pole of each opposite the positive pole of the other,
and then arranging between them an electromagnet attached to the
driving mechanism, and connected with an automatic pole changing
device, so that the electromagnet is attracted and repelled by the
two permanent magnets alternately, one attracting it at the same
time that it is repelled by the other.
In this way I am enabled to employ constantly and directly the full
power of the electromagnet and both permanent magnets. As it makes no
difference in the power of the motor whether the force to move the
vibrating magnet emanates from permanent or the electromagnet, it is
obvious that the same results may be obtained by the use of strong
permanent magnets in connection with a weak electromagnet as are
obtained by the use of weak permanent magnets and a strong
electromagnet, so that on my plan I am enabled to construct motors of
large size and power, and operate them with small batteries at a
trifling cost.
By increasing the power of the permanent magnets the power of the
motor may be increased to any extent required without increasing
the amount of battery power required, thus producing a large
motor, which may be operated with the same battery power as a
small one.
In practice, however, it will be found best to increase the size and
power of the electromagnet and its battery in proportion to the
increased power of the permanent magnets, but the most satisfactory
and economical results are obtained when the strength or power of
the permanent magnets exceeds that of the electromagnet many times.
The form and position of the electromagnet and the fixed magnets,
the construction of the current-changing device, the arrangement of
devices for transmitting the power and motion from the vibrating
electromagnet, and the other details may be varied at will, as they
form no essential or important part of the invention.
It is preferred to employ horseshoe magnets, and to arrange them in
parallel planes; but they may be made in other forms, and arranged in
different relative positions. The permanent magnets may each be made in
a single solid piece, or of a series of thin magnets clamped together,
the latter being preferred.
In the accompanying drawings, Figure 1 represents a top plan view
of one form of my motor; Figure 2, a side elevation of the same;
Figure 3, a detail view, illustrating the construction of the current
changer.
A and B represent two horizontal permanent magnets, arranged one
above the other, a small distance apart, with the positive pole of
each opposite the negative pole of the other. C represents an
electromagnet, secured to one end of a pivoted vibrating beam, D,
which has its opposite end connected by a
pitman, E,
to a crank pin on a wheel, F, which is mounted on a main driving-shaft,
G, as shown, so that the vibration of the magnet and beam will set the
shaft in motion. The ends of the electromagnet C are flattened and
extended between the permanent magnets A and B, and the parts so
arranged that it is free to vibrate and carry the end of beam D up and
down.
The magnet C is connected with a battery of any suitable kind; but
between the magnet and the battery there is interposed a current
charger, H, which reverses the current of electricity and changes the
polarity of the magnet at the end of each vibration of movement,
in consequence of which the magnet C is alternately repelled by the
magnet A and attracted by magnet B, and then attracted by A and
repelled by B, so that it is kept constantly moving up and down between
them. The vibration of the electromagnet operates the beam D, which, in
turn, through the
pitman and crank,
operates the shaft on which the wheel is mounted.
The current changer consists of a pivoted vibrating arm, H, having
one end forked and operated by a tappet, c, attached to the
beam D, and the other end provided with two spring conducting fingers,
d and e, which are connected with opposite ends of the
helix, and arranged to play over three metal plates, f,
f, and g, the two former connected with the negative and
the latter with the positive pole of the battery. The fingers always
connect with the opposite poles of the battery, and each finger
alternates from the positive to a negative plate, in such manner that
the current of electricity has its course through the helix of the
electromagnet reversed at each movement of the fingers.
In order that the permanent magnets may be adjusted in case of
necessity, and that, when they are composed of a series of thin plates
or magnets, plates may be added to or removed from the series in order
to vary the strength of the magnets, they are mounted on vertical
screws h, and secured by the nuts i, in the manner
shown.
In practice I find that, in order to prevent the permanent magnets
from affecting and partially neutralizing each other, the faces or
poles of the electromagnet should be made as wide or wider than those
of the permanent magnets.
It is also important that the poles of the electromagnet shall be
flattened on the sides, in order that the entire faces may approach
close to the faces or poles of the fixed magnets, which should be
flattened in like manner.
I am aware that motors consisting of an outside circular series of
permanent magnets and a central rotating series of electromagnets, the
polarity of which is changed as they pass the others, is old; but my
arrangement differs therefrom, and is superior thereto, in this, that
I apply the power to move the magnet directly in the line or path of
movement, while in the rotary machines, the power is applied at a
tangent, and consequently at a great disadvantage.
I am aware that it is old to arrange a vibrating armature between
two electromagnets which were either polarized alternately, or else
their polarity reversed at each movement of the armature; but they
differ in my engine, in that they derive their power wholly from the
electromagnets, while in my engine the power is derived mainly from
the permanent magnets, and also in that they require the use of two
electromagnets, while in my engine one only is used.
My combination possesses the advantages of requiring but little
battery power in proportion to the amount of power developed by the
engine, and of permitting the vibrating parts to be made light, so
that the engine may be operated with rapidity.
It is obvious that, instead of having a single electromagnet and
one pair of permanent magnets at one end of the beam, there may be a
similar combination used at each end or two or more combinations used
at either end. It is also obvious that, instead of using the
electromagnet of the horseshoe form, a straight one may be arranged
transversely between the two permanent magnets.
Having thus described my invention, what I claim is:
1) The combination, in an electric motor, of two permanent magnets,
A and B, and an electromagnet, C, connected with a pole-changing
device, and arranged to vibrate between the permanent magnets,
substantially as shown and described.
2) The combination of two permanent magnets, arranged with their
reverse poles opposite to, but separated from, each other, and a
reciprocating electromagnet connected with an automatic pole-changing
device, substantially as described.
3) The combination, in an electric motor, of a reciprocating
electromagnet, connected with an automatic pole-changing device, and
two compound permanent magnets, arranged on opposite sides of the
electromagnet, each consisting of a series of thin magnets, mounted
in such a manner that the series may be increased or diminished at
will, for the purpose of increasing or diminishing the power of the
motor.
4) In combination with the magnets A and B and the vibrating
electromagnet C, the beam D, provided with the tappet c, and the arm,
provide with the fingers d and e, moving upon the
plates f, f, and g, as shown.
5 magnet motor videos
bedini magnet motor circuit diagram
Calloway V Gate on a skateboard wheel.
Dust-Aid.com
Ross Wordhouse
Tokyo based Axle Corporation has introduced a new electric motorbike
with a hybrid plug-in, electromagnetic-permanent magnet motor, and is
seven times more cost-efficient than scooters running on petrol.
Prototype is named EV-X7.
man cave produtions-magnet motor
similar to above
demo, then, in a car:
Gary's 1st patent
( see improved 2nd patent above)
Canadian Patent #10,239
(July 16, 1879)
Improvement on Magneto Electric Machines
Wesley W. Gary
Patent Text
The primary object of my invention is to facilitate and greatly lessen the
expense of generating or developing electrical currents by dynamo machines,
and instruments, by so improving their construction and modes of action that
they may be operated by a very small amount of power and at high rates of
speed.
With this end in view, the invention consists broadly, in so constructing
the machine or instrument that the soft iron armature or core used with the
induction coil, is operated constantly in one and the same magnetic field,
and caused to be polarized and depolarized or to change its polarity without
departing from such field.
Many machines have been hitherto constructed for the purpose of developing
electrical currents, through the medium of a soft iron armature coiled with
wire and subjected to and magnetized by the inductive influence of a
permanent magnet, the armature or the magnet being moved, one in relation to
the other, in such manner as to cause the armature to change or lose its
polarity rapidly and at frequent intervals.
In order to secure this reversal or loss of polarity in the armature
without having it actually touch the magnet it has been hitherto considered
necessary that the armature should be carried into and out of the magnetic
field or field of attraction of the magnet; or else from the field of one
pole into that of the other. This operation required the movement of the
armature a long distance, necessitating the expenditure of a large amount of
power, limited the frequency of the polar changes, and precluded the full
utilization of the magnetic influence.
My invention derives its value mainly from the fact that I do not carry
the armature out of the magnetic field, but operate it wholly therein, and
secure by a very slight movement the same or better results than those
secured in existing machines.
My invention is based upon the fact hitherto unknown, that there exists
in the magnetic field or field of attraction of every magnet, at a greater or
less distance from the magnet, what I term a neutral line at which soft iron
will not be polarized, or magnetized, by the inductive action of the magnet.
The location of the neutral line as regards its distance from the magnet
differs in different cases, the line approaching the magnet in proportion to
the increase in strength of the magnet and receding as the size or cubic
contents of the armature is increased.
The location of the line may be readily determined by applying a coil and
galvanometer to the iron and moving it to and from the magnet; or by
applying a dipping needle to the armature and noting the point at which the
needle assumes a horizontal position or by allowing a tack or other small
piece of iron to adhere to the armature and noting the point at which the
tack is released by the same.
I have discovered that iron placed on this line although subject to a
strong attractive influence on the part of the magnet, remains unpolarized,
but that upon moving it from the line in either direction it instantly
assumes a polarity. I have also discovered that the polarity of the iron
differs on opposite sides of the line and changes on crossing the same, so
that if the iron placed in close proximity to the magnet and polarized, by
induction, be carried outward, it will lose polarity on reaching the neutral
line, and then assume a reverse polarity as it passes from the line outward.
By availing myself of this fact and arranging the armature to vibrate from
the neutral line inward, or from the neutral line outward, or to work across
the line, and in connection with a commutator, I secure the required changes
in the polarity of the armature and produce the same results by a very short
movement that are now secured by the longer one.
In constructing machines and instruments on my plan, the details may be
constructed and arranged in any manner desired provided the armature has the
above described action in relation to the magnet.
The best results are secured by using a horse-shoe magnet, compound if
desired, extending the armature across its two poles on one side, and then
arranging the armature to move only between the neutral line and the magnet.
In the accompanying drawings, Figs. 1, 2, 3, and 4, represent the relation
of the neutral line to the magnet and magnetic field, and also the
depolarization and change of polarity of the armature.
Figure 5 represents a perspective view of one form of magneto-electric
machine constructed on my plan.
Referring to the drawings, A, represents a base frame provided with
uprights, a, and sustaining in a fixed position a horizontal permanent
magnet B, of the ordinary compound horse-shoe type. C, represents a flat
horizontal armature of soft iron lying above and extending across both poles
of the magnet and secured rigidly to one end of a horizontal vibrating lever
D, which is sustained by a transverse shaft b, mounted in the
standards a. This lever is provided with an upright arm c, the upper
end of which is slotted to receive and is vibrated by an eccentric, d,
mounted on a shaft, c, the end of which is provided with a small
pinion f, and driven at a high speed by a large gear wheel E, as
shown. This arrangement causes the rotation of wheel E to vibrate the lever
and move the armature to and from the magnet with great rapidity. Around the
armature, which is preferably reduced and rounded at the middle, there is
wound an ordinary wire induction coil G.
In order to balance or sustain the armature against the attractive
influence of the magnet and avoid the necessity of employing a driving power
sufficient to overcome the same, I place below the vibrating lever two or
more springs H, of different heights, arranged to come into action
successively against the under side of the lever and offer an increasing
resistance as the armature approaches the magnet-and becomes subject to an
increasing attraction.
Under this arrangement it is only necessary, in
order to vibrate the armature, to apply a very slight amount of power, an
amount sufficient to overcome the friction and the inertia of the moving
parts.
In adjusting the machine it is preferred to vibrate the armature, from the
neutral line, the position shown in Fig. 2, inward toward the magnet, to the
position shown, in Figure 4, in which case the armature will be polarized as
it leaves the line and depolarized as it again reaches the line. Owing to the
fact that the armature requires a very slight movement, in some cases not
exceeding the fiftieth part of an inch; and the fact that it is balanced or
sustained against the attractive influence of the magnet, I am able to drive
the machine at a very high speed by the application of very little power; and
owing to the fact that the armature is operated only in close proximity to
the magnet where the attraction and inductive action are very powerful, I
produce in the wire induced currents of great quantity and intensity.
If for any special reason it may be considered desirable so to do, the
parts may be adjusted to vibrate the armature from the neutral line outward
without passing beyond the magnetic field. Or if desired, the parts may so
adjusted that the armature shall vibrate to and from the magnet across the
neutral line, without passing from the magnetic field. In such case there
will be two direct currents or impulses induced during the outward, and two
during the inward movement or the armature.
For the purpose of producing a continuous current, a commutator or current
changer of any suitable or ordinary construction may be used. This commutator
may be actuated in any suitable manner, one simple arrangement being shown in
the drawing, in which the rear end of the lever is arranged to vibrate an
arm, J, the end of which is provided with two conducting fingers, K and L, to
which the ends of the coil are connected. The fingers play across three metal
plates, M, N and O, which are connected, the first two with the conductor P,
and the other with conductor O, as shown, the arrangement being such that the
course of the current is changed as the current in the coil reverses, so as
to produce a continuous current in the conductors P and O. It is to be noted
that in all cases the construction of the machine is to be such as to utilize
the depolarization of the armature at the neutral line; that the armature is
to remain within the magnetic field; and that it is unnecessary to move the
armature through the entire field. The arrangement of the vibrating armature
across both poles of the magnet as shown, enables me to make constant use of
both poles and the entire armature, thus utilizing the full power and effect
of the magnet. The best results are secured when the armature consists as
shown in the drawing, of two plates or pieces riveted together.
As before stated, the form, construction, and arrangement of the parts may
be modified as desired, provided the armature operates within the magnetic
field, and provided also, the current produced by the depolarization of the
armature at the neutral line is made available for use.
Having thus described my invention what I claim is:
The herein described method of producing induced electrical currents,
consisting in vibrating an iron armature coiled with wire, to and from the
neutral line in the field of a permanent magnet.
In a magneto-electric machine or instrument, the combination of a
permanent magnet, an induction coil, and a soft iron armature arranged to
move wholly within the magnetic field, to and from the neutral line.
In a magneto-electric machine, the combination of a permanent magnet, an
induction coil, and an armature, and operating mechanism arranged to vibrate
the armature to and from the magnet, from or across the neutral line, without
departing from the magnetic field.
The combination in a magneto-electric machine, of a permanent magnet, an
induction coil, and a soft iron armature vibrated only from the neutral line
toward the magnet and back to the neutral line.
In a magneto-electric machine, the combination of a permanent magnet, an
induction coil, and a soft iron armature arranged to vibrate to and from and
to stop upon the neutral line in the magnetic field.
The combination in a magneto-electric machine of permanent magnet, an
induction coil, an iron armature vibrating wholly within the magnetic field,
to or across the neutral line, and an automatic commutator arranged to change
the course of the induced current when the armature is upon the neutral line.
In a magneto-electric machine, the combination of a permanent magnet, an
induction coil and armature, and an automatic commutator or current changer
arranged to move as the armature reaches the neutral line in the magnetic
field.
In a magneto-electric machine, the combination of a permanent magnet, an
armature moving to and from the same and a spring or its equivalent arranged
to counteract the attractive influence of the magnet.
The combination in a magneto-electric machine of a permanent magnet, an
armature arranged to move to and from the magnet, and springs or equivalent
devices, arranged to offer an increasing resistance to the armature as it
approaches the magnet.
The combination of the permanent magnet, the induction coil, and the
armature extending across both poles of the magnet, and arranged to move to
or from them both at the same time.
The combination of the permanent magnet, the armature extending across
both poles of the magnet, the induction coil, the vibrating lever, and the
eccentric arranged, to vibrate the lever as shown.
Wesley Ward Gary
Washington DC
February 27, 1879
Article based on Gary's 1st patent
( see improved 2nd patent at top)
Harper's New Monthly Magazine
(March 1879, pp. 601-605) see on-line at Cornell Univ. Library
http://cdl.library.cornell.edu/cgi-bin/moa/sgml/moa-idx?notisid=ABK4014-0058-86
With an ordinary horseshoe magnet, a bit of soft iron, and a common
shingle-nail, a practical inventor, ... now demonstrates his discovery of a fact
of the utmost importance in magnetic science, which has hitherto escaped the
observation of both scientists and practical electricians, namely, the existence
of a neutral line in the magnetic field -- a line where the polarity of an
induced magnet ceases, and beyond which it changes. With equally simple
appliances he shows the practical utilization of his discovery in such a way as
to produce a magnetic motor, thus opening up a bewildering prospect of the
possibilities before us in revolutionizing the present methods of motive power
through the substitution of a wonderfully cheap and safe agent. By his
achievement Mr. Wesley W. Gary has quite upset the theories of magnetic
philosophy hitherto prevailing, and lifted magnetism out from among the static
forces where science has placed it, to the position of a dynamic power. The Gary
Magnetic Motor, the result of Mr. Gary's long years of study, in a word, a
simple contrivance which furnishes its own power, and will run until worn out by
the force of friction, coming dangerously near to that awful bugbear, perpetual
motion. ...
To understand the operation of the Gary Magnetic Motor, it is
necessary first to comprehend thoroughly the principle underlying it -- the
existence of the neutral line and the change in polarity, which Mr. Gary
demonstrates by his horseshoe magnet, his bit of soft iron, and his common
shingle-nail. This is illustrated in Figure 1.
The letter A represents a compound magnet; B, a piece of soft iron made
fast to a lever with a pivoted joint in the center, the iron becoming a magnet
by induction when in the magnetic field of the permanent magnet; C, a small nail
that drops off when the iron, or induced magnet, is on the neutral line.
By pressing the finger
on the lever at D the iron is raised above the neutral line. Now let the
nail be applied to the end of the induced magnet at E; it clings to it, and
the point is turned inward toward the pole of the magnet directly below it,
thus indicating that the induced magnet is of opposite polarity from the
permanent one. Now let the iron be gradually lowered toward the magnet; the
nail drops off at the neutral line, and now its point is turned outward, or
away from the magnetic pole below. In this way Mr. Gary proves that the
polarity of an induced magnet is changed by passing over the neutral line
without coming into contact. In the experiment strips of paper are placed
under the soft iron, or induced magnet, as shown in the figure, to prevent
contact.
The neutral line is shown to extend completely around the magnet; and a
piece of soft iron placed on this line will entirely cut off the attraction
of the magnet from anything beyond. The action of this cutting off is
illustrated in Figure 2.
The letters A and B represent the one a balanced magnet and the other
a stationary magnet. The magnet A is balanced on a joint, and the two
magnets are placed with opposite poles facing each other.
The letter C is a piece of thin or sheet iron, as the case may be, made fast
to a lever with a joint in the center, and so adjusted that the iron will
move on the neutral line in front of the poles of the stationary magnet.
By pressing the finger on the lever at D the iron is raised, thus withdrawing
the cut-off so that the magnet A is attracted and drawn upward by the magnet
B. Remove the finger, and the cut-off drops between the poles, and in
consequence, the magnet A drops again.
The same movement of magnets can be obtained by placing a piece of iron
across the poles of the magnet B after the magnet A has been drawn near to it.
The magnet A will thereupon immediately fall away; but the iron can only be
balanced, and the balance not disturbed, by the action of the magnets upon each
other when the iron is on the neutral line, and does not move nearer or father
away from the magnet B.
It may not be found easy to demonstrate these principles at the first
trials. But it should be borne in mind that it took the inventor himself
four years after he had discovered the principle to adjust the delicate
balance so as to get a machine which would go. Now, however, that he has
thought out the entire problem, and frankly tells the world how he has
solved it, any person at all skillful and patient, and with a little
knowledge of mechanics, may soon succeed in demonstrating it for himself.
The principle underlying the motor and the method by which a motion is
obtained now being explained, let us examine the inventor's working models.
The beam movement is the simplest, and by it, it is claimed, the most power
can be obtained from the magnets. This is illustrated in Figure 3.
The letter A represents a stationary magnet, and B the soft iron, or induced
magnet, fastened to a lever with a joint in the center, and so balanced that
the stationary magnet will not quite draw it over the neutral line. The
letter C represents a beam constructed of a double magnet, clamped together
in the center and balanced on a joint. One end is set opposite the
stationary magnet, with like poles separating each other. The beam is so
balanced that when the soft iron B on the magnet A is below the neutral
line, it (the beam) is repelled down to the lower dotted line indicated by
the letter D. The beam strikes the lever E with the pin F attached, and
drives it (the lever) against the pin G, which is attached to the soft iron
B, which is thus driven above the neutral line, where its polarity changes.
(the best photo of a "Pitman" and crank I
could find - on an antique sewing machine.)
The soft iron now attracts the beam magnet C to the upper dotted line,
whereupon it (the soft iron) is again drawn down over the neutral line, and
its polarity again changing, the beam magnet C is again repelled to the
lower line, continuing so to move until it is stopped or worn out. This
simply illustrates the beam movement. To gain a large amount of power the
inventor would place groups of compound stationary magnets above and below
the beam at each side, and the soft iron magnets, in this case four in
number, connected by rods passing down between the poles of the stationary
magnets. A "Pitman" connecting the beam with a flywheel to change the
reciprocating into a rotary motion would be the means of transmitting the
power. With magnets of great size an enormous power, he claims, could be
obtained in this way.
One of the daintiest and prettiest of Mr. Gary's models is that
illustrating the action of a rotary motor. There is a peculiar fascination
in watching the action of this neat little contrivance. It is shown in
Figure 4.
The letter A represents an upright magnet hung on a perpendicular
shaft; B, the horizontal magnets; C, the soft iron which is fastened to the
lever D; E, the pivoted joint on which the lever is balanced; and F, the
thumb-screw for adjusting the movement of the soft iron. This soft iron is
so balanced that as the north pole of the upright magnet A swings around
opposite and above the south pole of the horizontal magnets B, it drops
below the neutral line and changes its polarity. As the magnet A turns
around until its north pole is opposite and above the north pole of the
magnets B, the soft iron is drawn upward and over the neutral line, so that
its polarity is changed again. At this point the polarity in the soft iron C
is like that of the permanent magnets A and B.
To start the engine the
magnet A is turned around to the last-named position, the poles opposite
like poles of the magnet B; then one pole of the magnet A is pushed a little
forward and over the soft iron. This rotary magnet is repelled by the
magnets B, and also by the soft iron; it turns around until the unlike poles
of the permanent magnets become opposite; as they attract each other the
soft iron drops below the neutral line, the polarity changes and becomes
opposite to that of the magnets B and like that of the magnet A; the
momentum gained carries the pole of A a little forward of B and over the
soft iron, which, now being of like polarity, repels it around to the
starting point, completing the revolution.
The magnets A and B now compound
or unite their forces, and the soft iron is again drawn up over the neutral
line; its polarity is changed, and another revolution is made without any
other force applied than the force of the magnets. The motion will continue
until some outside force is applied to stop it, or until the machine is worn
out.
The result is the same as would be obtained were the magnets B removed
and the soft iron coiled with wire, and battery force applied sufficient to
give it the same power that it gets from the magnets B, and a
current-changer applied to change the polarity. The power required to work
the current-changer in this case would be in excess of the power demanded to
move the soft iron over the neutral line, since no power is required from
the revolving magnet under these circumstances, it being moved by the
magnets compounding when like poles are opposite each other, three magnets
thus attracting the iron.
When opposite poles are near together, they
attract each other and let the iron drop below the line. The soft iron, with
its lever, is finely balanced at the joint, and has small springs applied
and adjusted so as to balance it against the power of the magnets. In this
working model the soft iron vibrates less than a fiftieth of an inch.
This rotary motion is intended for use in small engines where light power
is required, such as propelling sewing machines, for dental work, show
windows, etc.
Personal History
When Wesley Gary was a boy of nine years, the electric telegraph was in
its infancy and the marvel of the day; and his father, who was a clergyman
in Cortland County, New York, used to take up matters of general interest
and make them the subject of an occasional lecture, among other things,
giving much attention to the explanation of this new invention. To
illustrate his remarks on the subject he employed an electromagnetic
machine.
This and his father's talk naturally excited the boy's curiosity,
and he used to ponder much on the relations of electricity and magnetism,
until he formed a shadowy idea that somehow they must become a great power
in the world. He never lost his interest in the subject, though his rude
experiments were interrupted for a while by the work of his young manhood.
When the choice of a calling was demanded, he at first had a vague feeling
that he would like to be an artist. "But", he says, "my friends would have
thought that almost as useless and unpractical as to seek for perpetual
motion."
At last he went into the woods a-lumbering, and took contracts to
clear large tracts of woodland in Western and Central New York, floating the
timber down the canals to Troy. He followed this business for several years,
when he was forced to abandon it by a serious attack of inflammatory
rheumatism, brought about through exposure in the woods. And this,
unfortunate as it must have seemed at the time, proved the turning-point in
his life. His family physicians insisted that he must look for some other
means of livelihood than lumbering. To the query, "What shall I do?" it was
suggested that he might take to preaching, following in the footsteps of his
father, and of a brother who had adopted the profession. But this he said he
could never do; he would do his best to practice, but he couldn't preach.
"Invent something, then," said the doctor. "There is no doubt in my mind
that you were meant for an inventor." This was said in all seriousness, and
Mr. Gary was at length persuaded that the doctor knew him better than he did
himself. His thoughts naturally recurring to the experiments and dreams of
his youth, he determined to devote all his energies to the problem. He felt
more and more confident, as he dwelt on the matter, that a great force lay
imprisoned within the magnet; that some time it must be unlocked and set to
doing the world's work; that the key was hidden somewhere, and that he might
find it as well as some one else.
At Huntington, Pennsylvania, Mr. Gary made his first practical
demonstration, and allowed his discovery to be examined and the fact
published. He has long been satisfied, from his experiments, that if he
could devise a "cut-off", the means of neutralizing the attractive power of
a stationary magnet on another raised above it and adjusted on a pivot,
unlike poles opposite, and so arrange this cut-off as to work automatically,
he could produce motion in a balanced magnet. To this end he persistently
experimented, and it was only about four years ago that he made the
discovery, the key to his problem, which is the basis of his present motor,
and upsets our philosophy. In experimenting one day with a piece of soft
iron upon a magnet he made the discovery of the neutral line and the change
of polarity.
At first he gave little attention to the discovery of the
change of polarity, not then recognizing its significance, being absorbed
entirely by the possibilities the discovery of the neutral line opened up to
him. Here was the point for his cut-off. For a while he experimented
entirely with batteries, but in September, 1874, he succeeded in obtaining a
movement independent of the battery. This was done on the principle
illustrated in Figure 2.
The balanced magnet, with opposite poles to the
stationary magnet, was weighted so that the poles would fall down when not
attracted by the stationary magnet. When it was attracted up to the
stationary magnet, a spring was touched by the movement, and thus the lever
with the soft iron was made to descend between the two magnets on the
neutral line, and so cutting of the mutual attraction. Then the balanced
magnet, responding to the force of gravitation, descended, and, when down,
struck another spring, by means of which the cut-off was lifted back to its
original position, and consequently the force of attraction between the
magnets was again brought into play.
In June, the following year, Mr. Gary
exhibited this continuous movement to a number of gentlemen, protecting
himself by covering the cut-of with copper, so as to disguise the real
material used, and prevent anyone from robbing him of his discovery. The
publication in the local newspaper of the performance of the little machine,
which was copied far and wide, excited much interest. But the inventor was
by no means satisfied. He had succeeded in securing a continuous motion, but
not in a practical motor. He had invented a unique plaything, but not a
machine that would do a man's work. So he made further experiments in one
direction and another, using for a long time the battery; and it was not
until some time after he moved to Boston (which was about two years ago)
that he was convinced that the point in the change of polarity, with which
he was so little impressed when he first hit upon them along with his
discovery of the neutral line, were the true ones to work upon.
Thereafter
his progress was most rapid, and in a little while he had constructed
working models, not only to his own satisfaction, but to that of those
experts who had the fairness to give them a critical and thorough
examination, clearly demonstrating his ability to secure motion and power,
as they had never before been secured, from self-feeding and self-acting
machines. His claim, as he formally puts it, is this:
"I have discovered
that a straight piece of iron placed across the poles of a magnet, and near
to their end, changes its polarity while in the magnetic field and before it
comes in contact with the magnet, the fact being, however, that actual
contact is guarded against. The conditions are that the thickness of the
iron magnet must be proportioned to the power of the magnet, and that the
neutral line, or line of change in the polarity of the iron, is nearer or
more distant from the magnet according to the power of the latter and the
thickness of the former. My whole discovery is based upon this change of
polarity in the iron, with or without a battery." Power can be increased to
any extent, or diminished, by the addition or withdrawal of magnets.
Mr. Gary is 41 years old, having been born in 1837. During the years
devoted to working out his problem he has supported himself by the proceeds
from the sale of a few useful inventions made from time to time when he was
forced to turn aside from his experiments to raise funds. From the sale of
one of these inventions -- a simple little thing -- he realized something
like $10,000.
The announcement of the invention of the magnetic motor came at a moment
when the electric light excitement was at its height. The holders of gas
stocks were in a state of anxiety, and those who had given attention to the
study of the principle of the new light expressed the belief that it was
only the question of the cost of power used to generate the electricity for
the light that stood in the way of its general introduction and substitution
for gas.
A prominent electrician, who was one day examining Mr. Gary's
principle, asked if in the change of polarity he had obtained electric
sparks. He said that he had, and the former then suggested that the
principle be used in the construction of a magneto-electric machine, and
that it might turn out to be superior to anything then in use. Acting on
this suggestion, Mr. Gary set to work, and within a week had perfected a
machine which apparently proved a marvel of efficiency and simplicity.
In all previous machines electricity is generated by revolving a piece of soft
iron in front of the poles of a permanent magnet. But to do this at a rate
of speed high enough to produce sparks in such rapid succession as to keep
up a steady current of electricity suitable for the light, considerable
power is required. In Mr. Gary's machine, however, the piece of soft iron,
or armature, coiled with wire, has only to be moved across the neutral line
to secure the same result.
Every time the polarity changes, a spark is
produced. The slightest vibration is enough to secure this, and with each
vibration two sparks are produced, just as with each revolution in the other
method. An enormous volume can be secured with an expenditure of force so
diminutive that a caged squirrel might furnish it. With the employment of
one of the smallest of the magnetic motors, power may be supplied and
electricity generated at no expense beyond the cost of the machine.
The announcement of the invention of the magnetic motor was naturally
received with incredulity, although the recent achievements in mechanical
science had prepared the public for almost anything, and it could not be
very much astonished at whatever might come next. Some admitted that there
might be something in it; others shrugged their shoulders and said, "Wait
and see', while the scientific referred all questioners to the laws of
magnetic science; and believers in book authority responded, "It can't be
so, because the law says it can't."
A few scientists, however, came forward,
curious to see, and examined Mr. Gary's models; and when reports went out of
the conversion of two or three of the most eminent among them, interest
generally was awakened, and professors from Harvard and the Massachusetts
Institute of Technology called, examined, and were impressed. More promptly
than the scientists, capitalists moved; and before science had openly
acknowledged the discovery and the principle of the invention, men of money
were after Mr. Gary for the right to use the motor for various purposes: one
wished to use it for clocks, another for sewing machines, others for dental
engines, and so on.
It is as yet too soon to speculate upon what may result from the
discovery; but since it produces power in two ways, both directly by magnets
and indirectly by the generation of unlimited electricity, it would seem
that it really might become available in time for all purposes to which
electricity might long ago have been devoted except for the great expense
involved. Within one year after the invention of the telephone it was in
practical use all over the world, from the United States to Japan. And it is
not incredible that in 1880 one may be holding a magnetic motor in his
pocket, running the watch which requires no winding up, and, seated in a
railway car, be whirling across the continent behind a locomotive impelled
by the same agency.
Some basic observations concerning magnets
Two magnets repel further than they attract because of
friction and inertia forces.
Most of our energy comes directly or indirectly from
electromagnetic energy of the sun, e.g. photosynthesis
and watercycle of ocean to water vapor to rain or snow
to ocean.
Magnetic energy "travels" between poles at the speed of light.
Permanent magnets on both sides of an iron shield are
attracted to the shield and only weakly to each other
at close proximity to the shield.
Permanent magnets are ferrous metals. The attraction
is an inverse square force.
Magnetic energy can be shielded.
The sliding or perpendicular force of a keeper is much less
than the force in the direction of the field to remove the
keeper.
Most of the magnetic energy is concentrated at the poles of
the magnet.
A permanent magnet loses little strength unless dropped or
heated. Heating misaligns the magnetic elements within the
magnet.
If a weight lifted by a permanet magnet is slowly increased,
the lifting power of the magnet can be increased until all
the magnetic domains in the magnet are aligned in the same
direction. This becomes the limit.
Using magnets to repel tends to weaken them as it causes
more misalignment of the domains.
"You can get cheap and brittle ceramic magnets, stronger Alnico magnets,
and even the new super strong rare-earth magnets (neodymium-iron-boron)
of incredible strength"
A reference on magnetic materials.
Magnet Materials
Alnico
Alnico magnet alloy is largely comprised of Aluminum, Nickel, Cobalt and Iron.
Alnico is a moderately expensive magnet material because of the Cobalt and
Nickel content. This alloy has very good corrosion resistance and a high maximum
operating temperature. Some grades of this alloy can operate upwards of 550°C.
Magnets made with this alloy are available in a variety of grades and dimensions
and they are usually cast and finish ground to size. Alnico magnet material is a
mature technology and it has a relatively low Energy Product (BHmax).
This material is now mainly used in military, aerospace, older proprietary
designs and in applications where the magnet will be exposed to elevated
temperatures.
Rare Earth
Neodymium Iron Boron (NdFeB) and Samarium Cobalt (SmCo) are called Rare Earth
because Neodymium and Samarium are found in the rare earth elements on the
periodic table. Both Neodymium and Samarium Cobalt alloys are powdered metals
which are compacted in the presence of a magnetic field and are then sintered.
Neodymium (Rare Earth)
Neodymium, or Neo, is made up of Neodymium Iron and Boron and is moderate
in price. With poor corrosion resistance this alloy is usually plated or
coated (Examples: Nickel Plated, Epoxy Coated, Parylene Coated). Neodymium
is offered in a range of operating temperatures depending on your application
(80°C to 200°C). Premium Neodymium Alloys capable of operating above 120°C can
become quite expensive. This permanent magnet material has many intellectual
property rights associated with it and there are a limited number of licensed
manufacturers in the world. Many infringing manufacturers from the Pacific-rim
dump sub par material into the Western markets. This magnet material is
extremely powerful and it has allowed for the miniaturization of many products
from HDD (Hard Disc Drives) and motors to novelties and audio devices.
Neodymium permanent magnets usually offer the best value when comparing price
and performance.
Samarium Cobalt (Rare Earth)
Samarium Cobalt is made up of largely Samarium and Cobalt and it is the most
expensive magnet material to manufacture and to fabricate. Most of the cost
is due to the high Cobalt content and the brittle nature of the alloy. This
permanent magnet material offers high resistance to corrosion and it can
withstand high operating temperatures, up to 350°C. This material is used
extensively in the aerospace market or in areas of industry where performance
is the priority concern and cost is secondary. Samarium Cobalt is the second
most powerful magnet material and it exhibits excellent resistance to
demagnetization.
Ceramic (Ferrite)
Ceramic magnet material (Ferrite) is Strontium Ferrite. This material is one
of the most cost effective magnetic materials manufactured in industry. The
low cost is due to the cheap, abundant, and non-strategic raw materials used
in manufacturing this alloy. The permanent magnets made with this material
lend themselves to large production runs. This magnet material has a fair to
good resistance to corrosion and it can operate in moderate heat. The majority
of the world's Ceramic magnetic material comes from China because of the alloy’s
commodity nature and the high tooling costs found in the west. Ceramic magnets
have a low Energy Product
( the energy that a magnetic material can supply to an external magnetic circuit
when operating at any point on its demagnetization curve; measured in
megagauss-oersteds. )
and they are usually used in an assembly containing mild steel.
Bonded
Bonded magnet materials can be made from Alnico, Ceramic, NdFeB, or SmCo powders
which are combined with a variety of plastic binders (Matrix). They can be either
Injection Molded or Compression Bonded into complex shapes with finished dimensions.
Bonded materials have a moderate resistance to corrosion and a low tolerance to heat
because of the binder material. Bonded magnet materials are commonly used in
automotive parts because they lend themselves to large production quantities and
complex shape can be produced at a low cost.
Flexible (Rubber)
Flexible magnets are manufactured by mixing Ferrite or Neodymium magnet powders
and synthetic or natural rubber binders. Flexible is manufactured by rolling
(calendaring) or extrusion methods. Versatility, low cost, and ease of use are
among the reasons to choose ferrite based flexible magnets for your application.
This magnet material is usually manufactured in strip or sheet form and it is used
in micro-motors, gaskets, novelties, signs, and displays. Ferrite flexible magnet
material is very low energy and it does not usually replace fully dense magnet
materials. Flexible Neodymium material is higher in strength, but is it is made in
limited quantities and the cost is high.
Another potentially valuable invention
and its suppression
There is a US Patent number 3,890,548 submitted in 1975 by Edwin V. Gray,
of Northridge, Calif. for a "Pulsed Capacitor Discharge Electric
Engine" which also utilzes permanent and electro-magnets. Though it
is complex and very expensive (he has spent $1million!) to build, in case
you have heard and have wondered about it, the best source of information
I have found on it is at
www.pureenergysystems.com/os/EdGrayMotor/...
The newspaper story of it's suppression is photocopied at (.jpg image)
page 1
and
page 2
Hopefully, the W. W. Gray motor is so simple that everyone can build it
and no one will be able to stop the "movement".
Basics of Design Engineering - Power Actuators,
Motors and Shock Absorbers - Rotary actuators
Rotary actuators
Rack-and-pinion actuators use fluid pressure to drive a piston
connected to a gear rack, which rotates a pinion. Standard units are available with
rotation of 90, 180, or 360°. They can be obtained with two parallel
piston-rack units to double output torque. Outputs to 35 million lb-in. are
available.
Helix actuators have helical grooves in the piston rod that
convert linear to rotary motion. Helical actuators are available with standard
rotations varying from 100 to 370° with outputs to 15,000 lb-in.
A relatively new actuator gaining wide acceptance uses double helical gearing.
This design features two moving parts: the piston sleeve, which reciprocates and
rotates; and the output shaft, which only rotates. As the piston sleeve
reciprocates in helical actuators, the outer spline engages the ring gear and
causes sleeve rotation. At the same time, the inner spline engages another set of
helical teeth on the output shaft. This causes relative shaft rotation in addition
to that of the piston sleeve.
Planetary actuators increase helix angle and reduce actuator
length by replacing sliding action with rolling action. Planetary rollers on the
piston between the helical shaft and housing grooves provide an arrangement similar
to the gears in a planetary speed reducer. As in double helical actuators,
planetary actuators have two basic moving elements, the piston assembly and shaft
assembly.
Piston movement causes rollers to follow helical grooves in the housing, forcing
piston rotation. Simultaneously, the rollers follow helical grooves in the shaft,
forcing shaft rotation. Design is such that 90° piston movement results in
180° of shaft rotation. Large-diameter bearings and mounting flanges on this
unit can carry large moment, thrust, and radial loads.
Linear cylinders consist of a simple cylinder with a pin-ended
rod connected to a crank arm that drives the rotating shaft. These devices are
typically pressure actuated in both directions and are equipped with adjustable
stops for accurate adjustment of stroke. Stroke is ordinarily adjustable from 85 to
100°.
Fail-safe variations on the basic cylinder are used where a power failure or
fluid loss could suspend the controlled object in a dangerous position. Fail-safe
actuators are spring-loaded to ensure the return of the shaft to a safe position --
they are available with torque outputs to over 5,000 lb-in.
Scotch yoke actuators provide torque from a linear cylinder
mechanism. They can be either single or double acting, producing torque as high as
45 million lb-in., driving through comparatively short arcs -- about 90°
maximum. Output torque is not constant, but increases as the piston moves away from
its center position.
Sprocket actuators provide long rotations. Up to five complete
turns (1,800°) and torques to 23,500 lb-in. are available from sprocket
actuators. In these devices, two pistons, a chain, and a sprocket convert fluid
pressure into torque. The large piston acts as the driver, pulling the chain. The
smaller piston seals against fluid leakage past the return side of the endless
chain.
the Howard Johnson motor
Despite precise positioning demands, it still
seemed more attainable than the others here below.
A group of these could be
mounted on a rotating disc?
"Due to security risks and a lack of support for web standards
this website does not support IE.
"Looking through the Windows : The Internet Explorer threat Jan 20, 2010 ... There has been a huge amount of media regarding the current
security concerns of using Internet Explorer as a browser on your machine."