Application of Gas and Petroleum and like Engines to Locomotive and other Intermittent Work.
Year: 1889

page_text: The decision of the Chief Examiner, acting on behalf of the Comptroller, of the
18th day of August 1894, allowed, under Section 18 of the Patents, &c. Act,
1883, an Amendment of this Specification.
Date of Application, 6th Feb., 1889
Complete Specification Left, 6th Nov., 1889-Accepted, 1st Feb., 1890
PROVISIONAL SPECIFICATION.
The Application of Gas and Petroleum and like Engines to
Locomotive and other Intermittent Work.
I EUSTACK FITZMAURICE PIERS of St. Georges Iron Works ITulme
Manchester Mechanical Engineer do hereby declare the nature of this invention
to be as follows:-
A certain mechanical combination which has for its object the overcoming of the
difficulty of starting machinery which is worked by a gas engine, petroleum engine,
or other engines, the motive power for working which is generated by and after,
the starting of such gas or other aforesaid engines, and is especially adapted to the
working of tram cars or other machinery where stopping and starting continuously
is an essential part of the work. The aforesaid combination consists of a gas, or
other aforesaid engines, which works a force pump, and also a secondary engine or
engines which are worked by the force pump, and which secondary engine
or engines propel the tram car or work other machinery. The material upon
which the force pump works may be either water, air or other suitable agent, and
is conveyed by suitable pipe or pipes from the aforesaid force pump to the aforesaid
secondary engine or engines. In the pipe or pipes communicating between the
force pump and the aforesaid secondary engine or engines I place a suitable valve
or valves, the opening of which relieves the pressure from acting on the piston or
pistons of the aforesaid secondary engine or engines. Thus when it is necessary to
stop the tram car or other machinery I do not stop the gas engine, or petroleum
engine but merely open the aforesaid valve or valves thus stopping the aforesaid
secondary engine or engines. When it is desired to start the tram car or other
machinery the aforesaid valve or valves is or are closed, and the water or other
agent again acts upon the piston or pistons of the aforesaid secondary engine or
engines. A further part of my invention consists of the mode of working the
piston or pistons of the aforesaid force pump, which I do in the following manner.
On the crank shaft of the gas engine or other of the aforesaid engines I fix an
excentric the connecting rod from which terminates in one end of a lever of suitable
length, and from the other end there is also a connecting rod which terminates in a
collar which is loosely fitted on to the said crank shaft. The said lever forms a
portion of a circle the connecting rods from the ends of which would equal the
radius. In this lever there is a groove or slot nearly from end to end, in which
slides a block. To this block is attached the piston rod of the aforesaid force
pump in such manner that it adjusts itself to the groove or slot when the excentric
causes the aforesaid lever to rise or fall. The end of the lever connected to the
end of the excentric rod rises and falls when the crank shaft of the gas or
petroleum engine rotates, but the other end of the lever merely turns on a pin
(which acts as a fulcrum) in the end of the other connecting rod which is attached

page_text: to the aforesaid loose collur. By means of the aforesaid lever the force com-
municated to the piston of the force pump can be increased or deminished in
proportion to the distance the aforesaid block is from the excentric end of the
aforesaid lever. The aforesaid lever forming a part of a circle can be made to
slide along the aforesaid block, and is held in any required position by a suitable i
connecting rod.
Datel this Ath day of Walimuary 1880
COMPLETE SPECIFICATION (AMENDED).
The Application of Gas and Petroleum and like Engines to
Locomotive and other Intermittent Work.
I EUSTACE FITZMAURICE PIERS of St. Georges Works Hulme Manchester
da 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:
This Invention relates to a certain mechanical combination having for its object
the overcoming of the ditliculty of starting machinery worked by a Gas Engine
Petroleum Engine or other like engine and it is especially adapted to the working
at Tram ears or other machinery requiring to be trequently stopped and started.
The aforesaid combination consists of a gas or other atoresaid Engine, a Force
pump and a secondary engine or secondary engines which is or are worked by the
Force pump and which secondary engine or engines propel the Tram car or
work her machinery.
The Forre pump may operate either water air or other suitable agent the said
agent being conveyed from the furce pump by a suitable pipe or pipes to the
secondary engine or engines. In the pipe or pipes communicating between
the force pump and the secondary engine or engines I place a valve or valves the
opening of which relieves the pressure of the fluid from the force pump from
acting on the piston or pistons of the aforesaid secondary engine or engines.
Thus when it is necessary to stop the Tram Car or other machinery I do not
sinp the Gas engine or Petroleum Engine but merely open the aforesaid valve or
valves thus stopping the atoresaid secondary engine or engines. When it is desired
to start the Trim Car or other machinery the aforesaid valve or valves is or are
closed and the water or other agent again arts upon the piston or pistons of the
aforesaid secondary engine or engines.
further part of my Invention consists of the mode-of My Invention consists in
the use in such a combination of means for working the piston or pistons of the afore-
said force pump which I do in the following manner:
-
On the crank shaft of the Gas or other engine aforesaid 1 fix an eccentric. the
connecting rod from which is connected at its outer end to one end of a curved
lever to the other end of which curved lever is connected a rod which terminates
in a collar mounted loosely on the said shaft.
The said curved lever forms a portion of a circle the connecting roils from the
ends of which equal the radius. In this lever there is a groove or slot extending
nearly from end to end in which slot is fitted so as to slide therein a block to
which the piston rod of the aforesaid force pump is connected in such a manner
that it adjusts itself to the groove or slot when the eccentric causes the lever to
rise or fall. Or instead of grooving or slotting the lever the said lever may be
passed through a block pivoted to the pump rod. The end of the lever which is
Connected to the end of the eccentric riul rises and falls when the crank shaft of
the Gas or petroleum engine rotates, but the other end of the lever morely turns
on the pin (which acts as a fulerum) in the end of the other connecting rod which
is attached to the aforesaid louse collar. By means of the aforesaid lever tha

page_text: force communicated to the piston of the force pump can be increased or diminished
in proportion to the distance the aforesaid block is from the end of the aforesaid
lever which is connected to the eccentric. The aforesaid lever forming part of a
circle can be made to slide along the aforesaid block and is held in any required
position by a suitable connecting rod. Instead of supporting the curved lever in
the crank shaft by the rod and loose collar it may be supported on any other fixed
point independent of the crank shaft.
The accompanying drawing illustrates a mode of carrying out my invention as
applied to the driving of tram cars but I do not restrict myself to the arrangement
shown and described as variatious may be made therein without departing from the
nature of my invention.
A represents a gas or petroleum engine and B the crank shaft operated thereby.
On the crank shaft B there is an eccentric C the strap c of which is connected by
its rod D to one end of a curved bar or lever E the opposite end of which is
connected by a joint pine to a rod F suspended or supported by a ring or collar b
on the crank shaft B. FF are force pumps the pistons of which are connected
together by a rod G which has pivotted thereto a block H having a passage therein
through which the bar or lever E is passed so that when the gas engine A is at
work motion is given to the pump pistons through the rod E the stroke of the
pistons being more or less according to the distance the end of the bar connected to
the eccentric rod is from the block. Each cylinder F has a suction pipe f
dipping into a tank of water G from which water is drawn into the cylinders F
and forced therefrom through the delivery pipe I leading to the cylinder or
cylinders K of a second engine the piston or pistons of which cylinder or cylinders
is or are connected by rods L to cranks M. provided on the axle of one of the pair
of running wheels of the vehicle, so that when the engine K is worked by the water
forced thereinto by the pumps FF motion will be transmitted through the con-
necting rods L and cranks M to the vehicle. When the vehicle is in use the gas
or petroleum engine A is kept continuously at work at a non varying speed but
without operating the secondary engine K. This is effected by providing in the
passage I which connects the pumps F with the engine K a cock or valve at P
which may be operated as required by means of the handle R so as to conduct the
water from the pumps either into the engines K to drive the vehicle or back to the
reservoir G through the return pipe S-in which latter case a constant circulation
of the water through the pump and reservoir takes place. When the vehicle is to
he started the cock or valve P is turned so as to admit the water from the pumps
into the cylinders K the said water having done its work therein returning through
the exhaust pipe N back to the reservoir G² to be again used. It will be seen from
the foregoing description that the car or other vehicle may be readily started and
stopped as required by simply operating the cock or valve P in the required
direction by means of the handle R. The speed of the vehicle may be regulated
as required without altering the speed of the engine A by altering the stroke of the
pump pistons which may be effected by adjusting the position of the curved bar or
lever in the block H by means of the handle T and connecting rod t. For
example to produce the highest speed the end of the bar or lever E which is
connected to the eccentric rod D is moved close up to the block H so as to impart
the full stroke to the pump pistons and thereby force water rapidly into the
engine K.
To reduce the speed of the vehicle the bar or lever E is moved in the block H in
the reverse direction the slowest motion of the vehicle being when the end of the
bar connected to the eccentric rod is at the greatest distance from the block II the
pump pistons then receiving a very small stroke at each revolution of the crank
shaft B and consequently will require a great number of revolutions of the said
crank shaft to force sufficient water into the engine K to effect a revolution of the
driving axle of the car.
I have described water as being the motive fluid employed for working the
engine K but it is obvious that air or other fluid may be employed. When air is

page_text: employed it may be drawn into the pumps F through the suction pipes / and then
forced and compressed into an air reservoir or direct into the cylinders K if
desired.
The two pumps FF may be of different capacities and operated independently
for working the engine K at different speeds.
Having now particularly described and ascertained the nature of my said inveu-
tion and in what manner the same is to be performed 1 declare that what I
claim is:
1. For working tram--cars-and--other-vehicles-or-other-machinery-requiring-to-be
frequently stopped-and-started-the-combination of a gas-engine-petroleum--engine
r-the-like-n-force--pump-or-forre pump worked by the raid-engine-for-foreing
motive-Huid-intern-second-engine-connected-with-and-for-giving motion-to-the-driving
mechanism-of-the-ear-or-other-machine-substantially-as-hereinbefore--described--with
referrure-to-the-arermpanying-drawings.
The In an engine consisting of a combination of a gas engine or the like a force
pump or force pumps operated thereby for forcing motive fluid into a second cugina
the passage from the pump or pumps to the second engine being provided with a
valve or valves by means of which the motive fluid may be directed into or cut off
from the second engine as required substantially-as-and-for-the-purpose-hereinbefiore
deserilmal with reference-to-the-arrem panying drawings,
The the means for working the force pump or force pumps from the crank
shuft of the gas or like engine and for regulating the strokes of the pump or pumps
substantially as and for the purpose herein before described with reference to the
accompanying drawing.
TA
1000