Improvements in Devices for Transmitting Motion.
Year: 1892

page_text: Date of Application, 29th Mar., 1892-Accepted, 30th Apr., 1892
COMPLETE SPECIFICATION.
Improvements in Devices for Transmitting Motion.
I, GEORGE SIMPSON STRONG Engineer of No. 45 Broadway New York City
State of New York, United States of America, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention relates to devices for transmitting motion from one rotary body to
another moving about the same axes of rotation; and particularly to devices used
in connection with electric motors-the object of my invention being to provide
what I may call a fluid clutch by which the motion of the one body is transmitted
to the other and to combine with such mechanism devices for varying the resistance
offered by the fluid and an electric motor. In another application which I am
about to file I have shown and described the device to which this application refers
together with a modification of the same but have not specifically claimed the
particular mechanism to which this case refers. The nature of this invention will
be best understood as described in connection with the drawings in which it is
illustrated and in which,-
Figure 1 is a plan view showing two axles of a truck each equipt with my
invention and partly in section.
Figure 2 is an elevation of the part shown in Figure 1 partly shown in section on
the line xx of Figure 1.
Figure 3 is a cross-sectional view taken on the line y y of Figure 1.
Figure 4 an end view of the car axle and the casing surrounding it and the side
plate of the casing removed and it is shown partly in section on the line zz of
Figure 3; and
Figure 5 is a cross-sectional view taken through one of the end-plates of the
casing on the line 1-2 of Figure 4.
A is a shaft in the present case a car axle; B a gear-wheel secured to the said
shaft; around this gear-wheel is a casing consisting of two end-plates C** journaled
on the shaft by means of sleeve extensions C and bolted to a casing centre C* ;
C₁ Care glands at the ends of the sleeve C; obviously the casing centre may, if
desired, be formed integral with one of the face-plates. In the casing made up as
desired a chamber C' is formed which fits neatly around the gear-wheel B; and in
addition to said chamber one or more supplemental chambers, C³, are formed in the
casing which chambers communicate with the chamber C' as shown and in which
are situated gear-wheels D D fitting neatly within their chambers and in engage-
ment with the teeth of wheel B. The teeth of the engaged gear-wheels are formed
so that they will segregate spaces between them as they roll together. And in the
face-plates and on the line where the chambers C3 and C meet I form ports C
and C; the rear portions of which communicate as shown, the port C opens into
a straight passage C into which passage also the port C' opens at C; the com-
munication between the ports is regulated by a valve E preferably having a conical
face E', which, when moved over the portion C of passage C, closes said passage
entirely and which, in intermediate positions, can be made to partly close said passage.
The chambers C' and C³ are filled with a fluid and it will be seen that as the teeth
of gears B and D roll together the fluid enclosed between the teeth will be forced
out of the constantly decreasing space and will escape through one of the ports C*
or C' into the other of said ports from which it enters the space between the teeth
as they move apart; and it will also be seen that when the connection between the
ports is closed the fluid cannot escape from between the teeth of the engaged gear-
wheels and therefore the wheels cannot rotate with respect to each other but
remain locked until the communication between the ports is restored. Now if the
Го

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port communication be closed by the valve and either the shaft or the casing
rotated it is obvious that the rotation of the one will be directly communicated to
the other, while on the other hand if the communication between the ports be open
and the gears B and D permitted to rotate with respect to each other the one part
of the coupler can rotate independently of the other.
As shown in the drawings, ports are formed opposite to each other in each face-
plate of the casing and the two valves E controlling the cominunication between
the ports in each face-plate are connected with the same spindle, E³, which spindle
is continued out through one face-plate and secured to an annular ring M, which
ring is fastened to a sleeve C of the casing so as to rotate with it but be free to
move laterally thereupon. By moving the ring to or from the casing the valves
attached to the spindles or valve-stem are simultaneously removed.
The central part of the casing is surrounded by an annular rim cored out or
I having openings C*** between the said annular ring and the central chamber of the
casing. Supported on the rim is an armature core I and through the rim inside
of the part supporting the core holes I¹ are formed through which and holes I' in
the core are passed wire windings as indicated at I' in such manner as to convert
the entire rim of the casing into an annular armature which, as a whole, is indicated
by the letter I. Journaled upon the axle A, either directly or indirectly, and, as
shown in the drawings, directly upon the sleeves C of the casing already mentioned,
is a casing J to and within which is secured the magnetic field J³ of an electric
motor of which I is the armature; this casing is supported directly upon the axle
or shaft A but as it is not to rotate with the shaft it must have another point of
support to hold it stationary; this, in the drawings, is indicated by the brace. N
connecting two casings J on adjacent axles; the casing J is made as tight as
practicable in order to protect the armature and magnetic field one opening, J', is
formed in it through which extends a lever L having forked ends 17 which are
attached on each side of a ring M³ surrounding the ring M the lever being pivoted
to a link L pivoted in turn on a bolt L secured to casing J ; the upper end of
lever is connected by a link L' with a lever-arm L' extending out from shaft L
journaled in a projection J of casing J and which shaft is actuated by another
lever arm L' from which any convenient connection can be made to an operating
lever or handle in convenient reach of the car driver. The commutator by which
the current is taken from the armature is indicated at GH,-K indicates the
support for the brushes which is secured to casing J and as shown, extends out
through an opening J* in said casing.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is :-
First: As a device for transmitting motion, the combination of a shaft A having
a pinion B; a tight casing enclosing said pinion but free to turn on the shaft, said
casing having a chamber C fitting neatly around the pinion B; one or more com-
municating chambers C³, and communicating ports C C7 arranged along the
connecting line between chambers C. C³, as described; a pinion D fitting neatly in
each chamber C' arranged to engage pinion B, and a valve or valves E arranged to
regulate the opening between ports C and C'.
:
Second As a device for transmitting motion, the combination of a shaft A
having a pinion B; a tight casing enclosing said pinion but free to turn on the
shaft, said casing having a chamber Ca fitting neatly around the pinion B; and
chambers C C arranged on opposite sides of and in communication with
chamber C; and ports C* C' arranged along the connecting lines of said
chambers C³ C³ as described; pinions DD fitting neatly in chambers C* C* and in
engagement with pinion B; and valves E arranged to regulate the opening between
each pair of ports C° C.
Third: As a device for transmitting motion, the combination of a shaft A. having
‘a pinion B; a tight casing enclosing said pinion but free to turn on the shaft, said

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casing having a chamber C' fitting neatly around the pinion B; one or more com-
municating chambers C³ and communicating ports C C7 arranged along the
connecting line at the end or ends of chambers C³ C³ as described; a pinion D
fitting neatly in each chamber C' arranged to engage pinion B; a valve or
valves E arranged to regulate the opening between ports C and C7; electro-
magnetic armature windings secured to the casing; and a relatively-fixed magnetic
field arranged around the casing, substantially as and for the purpose specified.
Fourth As a device for transmitting motion, the combination of a shaft A
having a pinion B; a tight casing enclosing said pinion but free to turn on the
shaft, said casing having a chamber C³ fitting neatly around the pinion B ; one or
more communicating chambers C³, and communicating ports C' C' arranged along
the connecting line at the end or ends of chambers C³ C³ as described; a pinion D
fitting neatly in each chamber C³ arranged to engage pinion B; a valve or
valves E arranged to regulate the opening between ports C and C7; electro-
magnetic armature windings secured to the casing; a relatively-fixed magnetic
field arranged around the casing; and a casing for the field magnets journaled on
the shaft.
Fifth As a device for transmitting motion, the combination of a shaft A having
a pinion B; a tight casing enclosing said pinion but free to turn on the shaft said
casing having a chamber C' fitting neatly around the pinion B; one or more com-
municating chambers C'; a port C C extending at right angles from the end of
the connecting line between chambers C and C³; a port C extending from the
opposite end of said connecting line and connected with the back end of port C³; a
pinion D fitting in each chamber C³ and engaged with pinion B; a valve-stem E'
extending through port C'; and a valve E secured to said stem and adapted to
close and regulate port C as described.
Sixth The combination of a shaft A, a pinion B secured thereon, a tight casing
journaled on the shaft having a chamber C' to fit around pinion B, and
chambers C³ C³ communicating with chamber C² as described; pinions D D fitting
in chambers C and in engagement with pinion B; ports C C7 formed in the side
lines where chambers C and C³ communicate and connecting with each other as
described; valves E arranged to regulate the communication between each pair of
ports C C as described; valve-stems ³ connecting said valves in pairs and
extending out through the side of the casing; a ring M secured to a sleeve C of
the casing so as to turn with it but be free to move laterally, said ring being
attached to end of valve-stem E2; and means for moving ring M, all substantially
as and for the purpose specified.
:
Seventh In combination with a shaft A having a pinion B attached to it; a
casing journaled on said shaft having chambers CC, pinions D in chambers C',
and ports formed as described; said casing having also an annular rim and
openings C*** formed between the rim and central chamber C³, and an electric
motor armature consisting of a core I' and wire windings I passing through the
casing, rim and core, substantially as and for the purpose specified.
Dated this 29th day of March 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.