EPICYCLIC GEARING FOR TRANSMITTING DIFFERENT SPEEDS & communication
Year: 1884

page_text: PROVIDIONAL DEVIFICATION
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of the said Invention for EPICYCLIC GEARING
FOR TRANSMITTING DIFFERENT SPEEDS & communication to me from abroad by
James Hopkins Carrington, Merchant, of the City, County and State of New
York, United States of America, to be as follows:-
This invention relates to a mechanical movement for transmitting different speeds
and consists of a pair of bevel wheels facing one another and gearing with an
intermediate bevel wheel the said wheels being mounted as follows.
The right hand bevel wheel is relatively fixed in ono side of a yoke frame.
Journalled in the other side of the same frame is a collared sleeve, on which is
fixed the left hand bevelled wheel which faces the first one. Passing through the
first wheel is a hollow shaft which terminates at the inner end next to the said
sleeve and reaches at the other end beyond or out from the frame or yoke. On this
hollow shaft between the bevelled wheels is fixed a T piece having a radial pin on
which is journalled the intermediate bevelled wheel which is placed between and
gears with both the other two wheels. Through the hollow shaft and through the
Bleeve on which the left hand wheel is fixed, is passed the main shaft to which
either the sleeve or the hollow shaft may be secured so that on power being applied
to the hollow shaft by a band wheel secured thereto, or by other means the central
main shaft will be revolved in both cases but with different speeds that is to say,
the sleeve being loosened from and the hollow shaft fixed to the central shaft the
latter will have a slow motion revolving at the same speed as the hollow
shaft T piece and intermediate wheel the two latter parts in this arrangement
being of no practical service. But by loosening the hollow shaft and tightening
the collared sleeve upon the central shaft this shaft will take its motion from the
collared sleeve which owing to the action of the three gear wheels has twice
the speed of the hollow shaft thus doubling the speed of the central shaft.

page_text: In this manner a rapid motion may be transmitted by the central shaft and a
slow motion at the same time transmitted by the hollow shaft with one and the
same attachment or application of the motive power.
It will be understood that the T piece and intermediate gear wheel always
revolve with the hollow shaft around the common axis of the shafts and this motion
(the right hand wheel being relatively stationary) causes the intermediate wheel to
revolve upon its own axis which motion transmits a multiplied speed to the left
hand wheel and collared sleeve and it will be understood also that the relative speed
of the latter with that of the hollow shaft may be varied by varying the relative
sizes of the three gear wheels.

page_text: COMPLETE SPECIFICATION.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of the said Invention for "EPICYCLIC GEARING
FOR TRANSMITTING DIFFERENT SPEEDS," (a communication to me from abroad by
James Hopkins Carrington, Merchant, of the City, County and State of New
York, United States of America) and in what manner the same is to be '
performed, to be particularly described and ascertained in and by the following
statement:
This Invention relates to a mechanical movement for transmitting different speeds
and consisting of a pair of bevel wheels facing one another, and gearing with an
intermediate bevel wheel, the said wheels being mounted and operating as hereafter
described.
Reference is to be had to the accompanying drawings forming part of this
Specification in which similar letters of reference indicate corresponding parts in
all the figures
Figure 1 is a plan view of the new and improved mechanical movement
and Figure 2 is a section of the same taken on the line x, x, of figure 1.
The bevel wheel A, is relatively fixed in one side of the frame B, by the set
screw a. Journaled in the other side of the frame B, is the collared sleeve C.
On this sleeve C, is secured the beveled wheel D, which faces the bevel wheel A.
E, is a hollow shaft which passes through the wheel A, and terminates at the inner
end next to the sleeve C, and reaches at the other end beyond or out from the
frame B. On this hollow shaft E, between the beveled wheels A, D, is fixed
the T, shaped sleeve F, upon the radial pin or gudgeon F¹, of which is journaled
the intermediate bevel wheel G, which gears with both the wheels A, D. Through
the hollow shaft E, and through the sleeve C, is passed the main shaft H, to which
either the sleeve C, or the hollow shaft E, may be secured by the set screws b, br
or by other suitable means, so that on power being applied to the hollow shaft E, by
the band wheel I, fixed thereon or by other means the shaft H, will be revolved in
both cases but with different speeds. That is to say the set screw b, being loosened
and the screw b¹ tightened upon the shaft H the latter will have a slow motion
revolving at the same speed as the hollow shaft E, T piece or sleeve F and inter-
mediate wheel G, the two latter parts, in this arrangement being of no practical
service. But by loosening the screw b', and tightening the screw b, upon the
shaft H, this shaft will take its motion from the sleeve C which owing to the action
of the three wheels A, D, G, will have twice the speed of the hollow shaft E thus
doubling the speed of the shaft H. In this manner a rapid motion may be
transmitted by the shaft H and a slow motion at the same time transmitted by
the hollow shaft E with one and the same attachment or application of the
motive power.
It will be understood that the T piece or sleeve F and intermediate wheel G
always revolve with the hollow shaft E around the common axis of the shafts and
wheels A, D and this motion (the wheel A being relatively stationary) causes the

page_text: intermediate wheel G to revolve upon the gudgeon F which motion transmits a
multiplied speed to the wheel D, and sleeve C and it will be understood also
that the relative speed of the latter with that of the shaft E may be varied by
varying the relative sizes of the wheels A, D, G.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
1 The hollow shaft E, and sleeves C, and F, the latter carrying the intermediate
gear G combined with the axial shaft H and the gear wheels A and D arranged to
operate substantially as described.
2 The combination with the gear wheels A D G of the axial shaft H arranged
to operate substantially as set forth.
3 The sleeve C having the gear wheel D secured to it and adapted to be made
fast to the axial shaft H substantially as and for the purposes set forth.
Dated to a
Οι April 1000,
A. M. CLARK.
By A. M. & Wm Clark,
53, Chancery Lane, London.