Gear for Transmitting and Reversing the Power Given Off by Gas and Oil Engines and other like Motors.
Year: 1892

page_text: Date of Application, 12th Dec., 1892
Complete Specification Left, 10th Oct., 1893-Accepted, 9th Dec., 1893
PROVISIONAL SPECIFICATION.
Gear for Transmitting and Reversing the Power Given Off by Gas
and Oil Engines and other like Motors.
JAMES EDWARDES WEYMAN GEORGE HITCHCOCK and JAMES ARTHUR
DRAKE each and all Engineers Church Acre Works, Guildford do hereby declare
the nature of this invention to be as follows:-
Where gas or oil-engines are used to develop power at different speeds and where
reversing is required, as in propulsion of boats, locomotives, tramcars, the working
of hoists etc. it is necessary to introduce some mechanical arrangement the engine
being always kept running in the same direction; to do this we employ friction
gear in the following manner, on the engine crankshaft are placed three (more or
Tess) friction wheels or plates of different sizes, also on another shaft running
parallel and geared with the crankshaft are fixed three (more or less) other friction
wheels or plates the same size and corresponding with those above mentioned on
the crankshaft, all the above friction wheels or plates are permanently fixed upon
their respective shafts and corresponding sizes and positions. A third shaft has
also three (more or less) friction wheels or plates fixed together upon a sliding boss
or sleeve actuated by a lever thus bringing opposite to each other any pair of
friction wheels according to the desired speed at which the propeller, paddle-wheels
or travelling wheels are required to run, a second lever is also provided for keeping
the friction wheels in close contact, this may be done by a right and left hand
screw, or a pair of suitable wedges, toggle jointed levers etc. any of which may be
found suitable for the purpose.
JAMES EDWARDES WEYMAN.
GEORGE HITCHCOCK.
JAMES ARTHUR DRAKE.
COMPLETE SPECIFICATION.
Gear for Transmitting and Reversing the Power Given Off by Gas
and Oil Engines and other like Motors.
We, JAMES EDWARDES WEYMAN, GEORGE HITCHCOCK, and JAMES ARTHUR
DRAKE, each and all of The Church Acre Works, Guildford, in the County of
Surrey, Engineers, do hereby declare the nature of our said invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
Where gas or oil-engines are used to develop power at different speeds and where
reversing is required, as in propulsion of boats, locomotives, tramcars, the working
of hoists etc., it is necessary to introduce some mechanical arrangement the engine
being always kept running in the same direction; to do this we employ friction
gear in the following manner; on the engine crankshaft are placed three (more or.
Tess) friction wheels or plates of different sizes, also on another shaft running
parallel and geared with the crankshaft are fixed three (more or less) other friction
wheels or plates the same sizes and corresponding to those above mentioned on the
crank-shaft, all the above friction wheels or plates are permanently fixed on their
respective shafts and correspond in sizes and positions. A third shaft has also
three (more or less) friction wheels or plates fixed together upon a sliding boss or
sleeve actuated by a lever thus bringing opposite to each other any pair of friction
wheels according to the desired speed at which the propeller, paddle wheels or
travelling wheels are required to run, a second lever is also provided for keeping
Price Rd

page_text: the friction wheels in close contact, this may be done by a right and left hand
screw, or a pair of suitable wedges, toggle jointed levers etc., any of which may be
found suitable for the purpose.
As the principle of our invention is the same, whether employed in the propulsion
of a boat, locomotive, tram-car or the like, a description of it as applied to a boat,
say as for example a steam launch, will suffice. In this example provision is made
for three speeds but we do not confine ourselves to this number, as in some cases a
uniform speed may suffice requiring only one set of discs, in other cases two, four
or more may be provided, neither do we confine ourselves to the precise arrangement
here shewn.
The nature of our invention will be better understood on reference to the accom-
panying two sheets of drawings in which―
Fig. 1. (Sheet 1.) represents a plan of our improved gearing suitable for
propelling a boat, in which view the propeller shaft with the friction discs is shewn
out of gear with the driving shafts, but in a position for being put in gear at the
highest speed, the dotted lines shew the position the discs would be in when ready
for gearing to the slowest speed.
Fig. 2. (Sheet 1.) represents the positions of the respective shafts, driving and
friction wheels or discs as seen in end elevation.
Fig. 3. (Sheet 1.) is a similar plan of the gearing shewing the propeller shaft
and discs geared for a medium speed, say in the forward motion, when a right
handed screw is employed, the reverse motion is obtained by bringing the discs of
the propeller shaft into gear with the corresponding discs on the crank or driving
shaft.
Fig. 5. (Sheet 2.) is a side elevation of the friction discs on the propeller shaft
shewing the stopping, starting and reversing lever to the right hand side of the
figure and the lever for regulating the speed of the shaft is shewn on the left hand
side of the figure.
Fig. 4. (Sheet 2.) being an end view of the last named lever and
Figs. 6 and 7. being end views of the stopping, starting or reversing lever, in the
former figure (6,) the lever is shewn in the position for placing the friction discs
out of gear with the driving shafts and Figure 7. shews the lever in position with
the friction discs in the forward gear for the slowest speed.
The same letters refer to similar parts throughout the several views→
a, is the first motion or crank shaft of the engine,
b, is a spur or helical driving wheel on the same.
c, being an equal sized spur or helical wheel on the second motion shaft d.
d, is the second motion shaft last referred to."
e, is the propeller shaft.
f, is a friction clutch sliding on a key or a feather or on keys or feathers on the
propeller shaft, e, with discs 1, 2, and f³ for three speeds.
g, 92, and g³, are three friction discs fixed on the first motion shaft, a.
h1, h2, and h³, are three friction discs fixed on the second motion shaft, d.
i, is a collar attached to the clutch f, for the fork end of the regulating lever j,
(Sheet 2.), and by means of which the speed of the shaft, e, may be regulated.
j, is the lever for regulating the speed of the shaft already referred to.
k, is a bearing on the end of the shaft, e, carried on a sliding or swinging pedestal
or bracket, I, and actuated by the reversing lever, m.
1, is the sliding or swinging pedestal or bracket.
m, is the reversing lever by means of which the friction clutch, f, may be put
either in or out of gear.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what we
claim is,
1. In gearing for transmitting the power and for reversing and regulating the
motion of the propeller or driving shafts of boats, locomotives, tramcars and the

page_text: like vehicles when propelled by gas, oil and other like motors, the arrangement
and combination of parts and appliances comprising a second motion shaft d,
driven from the first motion or crank shaft of the engine, a, by two equal sized
spur or helical wheels b and c, the friction discs g', 92, and 93, on the first motion or
crank shaft, a, the friction discs h³, ² and h³, on the second motion shaft, d, the
friction clutch, f, with the friction discs, f¹, f, and f³, placed on the propeller
shaft, e, the speed regulating lever, j, for actuating the friction clutch f, by means
of the collar, i, the starting, stopping, and reversing lever, m, for actuating the
propeller shaft, e, in or out of gear, through the bearing k, carried in the
movable pedestal or bracket 1, together with the appurtenant fittings and
appliances or their equivalents in the manner and for the purposes substantially
as herein described and illustrated.
Dated this 4th day of October 1802
R. HEBER RADFORD,
Agent for the Applicants.