Improvements in Apparatus or Machinery for Driving Tramway and other Carriages by Gas, Hydrocarbon, or other Portable Motors.
Year: 1886

page_text: Jate of Application, 15th Nov., 1886.
Complete Left, 15th Aug., 1887.
Complete Accepted, 16th Sept., 1887
RESERVE
Improvements in Apparatus or Machinery for Driving Tramway
and other Carriages by Gas, Hydrocarbon, or other Portable
Motors.
I GRIFFITH BREWER of 33 Chancery Lane in the County of Middlesex Mechanical
Draughtsman do hereby declare the nature of this invention (a communication to mo
from abrond by Emmanuel Stevens of 5 Rue Sainte Gudule, Brussels, Belgium,
Engineer) to be as follows:-
:-
This invention refers to apparatus or machinery as hereafter described of double
clutches and gearing whereby gas or hydrocarbon or other portable motors may be
employed more conveniently than heretoforo for obtaining power to propol tramways
or other carriages.
According to this invention there is placed on a tramway or other carriage to be
propelled, a gas or hydrocarbon motor and which carriage or car may be driven either
backwards or forwards or the carriage may be stopped as desired by the employment
of special gearing as hereinafter described, without stopping the engine, thus avoiding
the attendant difficulties and inconveniences which are caused by restarting the engine
every time it is necessary to stop or start the car.
A tramway or other carriage or car driven according to this invention by for
example a gas or hydrocarbon motor is provided with a fly wheel on the engine shaft
and also is provided on the same shaft with two pulleys either of which may be con-
nected and fixed to the shaft as desired by a sliding cone or other clutch. These two
driving pulleys on the main axle are each connected by a belt or otherwise to two
pulleys fixed on to a secondary shaft carried in bearings on the car. One of the
pulleys on the secondary shaft is about double the size of the other, so that according
to which of the pulleys on the driving shaft is at the time fixed thereto by the cone or
other clutch, so the secondary shaft will be driven at a speed, varied according to the
proportions of the diameters of the wheels. Motion is communicated from the
secondary shaft by means of a sprocket wheel keyed on the said secondary shaft and
endless chain. The said chain takes into or on to sprocket teeth formed on the boss
of a bevel pinion loosely mounted on the running wheel axle of the tramway or other

page_text: carriage or car. This first pinion gears with a bevel wheel mounted on bracket
bearings fixed or carried on the framework of the car and the said bevel wheel gears
with a second bevel pinion running loosely on the same axle as the first bevel pinion,
that is, on the wheel axle of the car. The bosses of each of the bevel pinions are
provided with clutch teeth or similar devices and there are also two sliding clutches
one the wheel axle one for each of the bevel pinions. These clutches are operated by
a two armed hand lever connected at its end to a sliding bar; this bar has jointed to
it at each end, rock levers, the fulcrums of which are supported by suitable fixed
framework. The ends of the rock levers embrace or otherwise and actuate the two
sliding clutches on the wheel axle in such manner that when for example one clutch is
in gear with the first bevel pinion and fixing same to the axle the other will be clear of
the second pinion and allow same to run loose.
When in action the motor may be always driven in one direction and consequently
the secondary shaft (the speed of which may be varied by the before mentioned varying
sized pulleys) will rotate continuously in the same direction. The first bevel pinion
loose on the wheel axle (being driven from the secondary shaft by chain) will also be
caused to rotate similarly. When the first bevel pinion is clutched to its shaft the
same will be driven in one direction, say forward, and the bevel wheel and second
bevel pinion will be caused to rotate thereby, but the second bevel pinion running
loosely on the wheel axle will not affect the direction of revolution of same. When
it is wished to reverse the direction of motion of the car the lever is thrown over, the
second bevel pinion is clutched to the wheel axle, the first bevel pinion being thereby
released; the car will now be driven in the reverse direction by the first bevel pinion
through the bevel wheel and second bevel pinion. When the car is to be stopped the
lever is placed midway between the two positions before mentioned and the sliding
clutches will leave both the first and second bevel pinions looso on the wheel axle
whereby although the motor, secondary shaft, and bevel gearing will be continuously
running, yet the car may be stopped, and started in either direction as desired.
Dated this 15th day of November 1886.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus or Machinery for Driving Tramway
and other Carriages by Gas, Hydrocarbon, or other Portable
Motors.
I GRIFFITH BREWER of 33 Chancery Lane in the County of Middlesex, Mechanical
Draughtsman do hereby declare the nature of this invention (a communication to me
from abroad by Emmanuel Stevens of 5 Rue Sainte Gudule, Brussels, Belgium
Engineer) and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This invention refers to apparatus or machinery consisting of double clutches and
gearing as hereafter described whereby gas, hydrocarbon or other portable motors may
be employed for the propulsion of tramway or other carriages more conveniently than
heretofore.
According to this invention there is placed on the tramway or other carriage to be
propelled, a suitable gas or hydrocarbon motor, which latter by the employment of tho
special gearing as hereinafter described is caused to drive the carriage or car either
backwards or forwards, or the said carriage or car may be stopped, all as desired
without the necessity of stopping the engine or notor, thereby avoiding the attendant
difficulties and inconveniences which are caused by stopping or re-starting the engine
every time it is necessary to stop or start the car.
And in order that this invention may be fully understood I will describe the same
with reference to the accompanying drawings. Figure 1 is a sectional side elevation,
Figure 2 is a plan, and Figure 3 is an end view of a tramway or other carriage or car
fitted with driving mechanism or apparatus constructed according to this invention.
The tramway or other carriage or car driven according to this invention by for
example a gas or hydrocarbon motor the position only of which is indicated on the
drawings, is provided with a fly-wheel A on the engine shaft A' and also is provided
on the same shaft with two loose pulleys a E' either of which may be connected and
fixed to the shaft as desired by a sliding cone or other clutch F. These two driving
pulleys a E on the main axle A' are each connected by belt or otherwise to two
pulleys C and E fixed on to a secondary shaft D carried in bearings on the car. One
of the pulleys on the secondary shaft is about double the size of the other, so that
according to which of the pulleys a or E' on the driving shaft is at the time fixed
thereto by the cone or other clutch F so the secondary shaft D will be driven at a
speed, varied according to the proportions of the diameters of the wheels. Motion.
is communicated from the secondary shaft by means of a sprocket wheel d keyed on
the said secondary shaft D and endless chain. The said chain takes into or onto
sprocket teeth formed on the boss of a bevil pinion H loosely mounted on the running
wheel axle G of the tramway or other carriago or car. This first pinion H gears with
a bevil wheel L mounted on a stud axle from a bracket fixed or carried on the frame-
work of the car and the said bevel wheel L gears with a second bevil pinion H'

page_text: running loosely on the same axle as the first bevel pinion, that is, on the wheel axle G
of the car.
The bosses of each of the bevil pinions are provided with clutch teeth or
similar devices and there are also two sliding clutches K K' on the wheel axle G one
for each of the bevil pinions H, H'. These clutches are operated or slidden by a two
armed hand lever the end of one arm being connected to a sliding bar I, this bar has
jointed to it at each end, rock levers J J, the fulcrums i of which are supported by
suitable fixed framework. The ends of the rock levers J J embrace and actuate the
two sliding clutches K K' on the wheel axle in such manner that when for example
one clutch is in gear with the first bevil pinion and fixing same to the axle the other
will be clear of the second pinion and allow same to run loose.
When in action the motor may be always driven in one direction and consequently
the secondary shaft D (the speed of which may be varied by the before mentioned
varying sized pulleys C and E) will rotate continuously in the samo direction. The
first bevil pinion H loose on the wheel axle G being driven from the secondary shaft D
by chain will also be caused to rotate similarly. When the first bevil pinion H is
clutched to its shaft the running wheel shaft will be driven in one direction and the
car say forward, and the bevil wheel L and second bevil pinion H' will be caused to
rotate thereby but the said second bevil pinion H¹ running loosely on the wheel axle
will not affect the direction of revolution of same. When it is wished to reverso the
direction of motion of the car, the lever I is thrown over, the second bevil pinion Ḥ'
is clutched to the wheel axle & the first bevil pinion being simultaneously released;
the car will now be driven in the reverse direction by the first bevil pinion H through
the bevil wheel L and second bevil pinion H. When the car is to be stopped the
lever I is placed midway between the two positions before mentioned and the sliding
clutches KK will leave both the first and second bevil pinions loose on the wheel
axle G as shewn at Figures 1, 2 and 3 whereby although the motor, secondary shaft D
and bevil gearing H L and H will be continuously running yet the car may be stopped
and started in either direction as desired. M M are reservoirs for storing gasos, spirits
or other fuel to supply the description of motor employed.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed I declare that what I claim is
In apparatus or machinery for driving tramway or other carriages the particular
arrangement and construction of gearing as herein described, such gearing being
especially suitable for use with gas, spirit or other portable motors, whereby the said
tramway or other carriage or car may be driven either forwards or backwards or bo
caused to remain entirely stationary, all as desired, and the speed varied, without
stopping or re-starting the driving motor, all substantially as described with reference
to the accompanying drawings.
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