Improvements in and connected with Oil Motors for Vehicles and Propelling Generally.
Year: 1897

page_text: Date of Application, 17th Apr., 1897
Complete Specification Left, 17th Jan., 1898-Accepted, 19th Mar., 1898
PROVISIONAL SPECIFICATION,
Improvements in and connected with Oil Motors for Vehicles and
Propelling Generally.
We, JAMES ROOTS and CUTHBERT EDWARD VENABLES, of 100, Westminster Bridge
Road, London, Engineers, do hereby declare the nature of this invention to be as
follows:-
The ignition tubes are preferably made of platinum, the tube is expanded at
the bottom, the outside then forms a tapered or conical surface which fits within a
nipple of baser metal which is tapered or coned inside to fit the tube. The nipple
is square or hexagon at the top to fit a spanner and has a screw thread below to
screw into the engine. Beneath the nipple and tube of platinum, there is a second
short length of tube also of baser metal which projects into the explosion space of the
engine. In fitting a motor to a carriage, I attach on or near to the pump which cir-
culates the water through the jacket round the tubes to the tank and back again,
a cap or like receptacle into which particles of solid matter which may get into the
tank and tubes and foul the pump valves, may be caught.
For reversing on a carriage, I connect a small pulley on the countershaft by a
crossed strap to a larger one on the axle. The large one normally runs loose until,
when it is required to reverse, an ordinary jaw clutch is forced along the axle by
means of a toggle link operated by a brake or other lever, and engages with its
counterpart fixed to the loose running pulley which locks it to the axle.
A collar may be fixed on the front wheel heads on each side of which collar,
above and below it is a spring, the one under tension the other under compression,
a bearing surface may be fitted at the top and bottom on the outer tube in which
the head slides up and down while the car is running over an uneven surface. Balls
may be fitted in the sliding pieces.
In making a motor of twin cylinders, the air heater and vapouriser for the two
cylinders are made in one casing. Both the air heater and vapouriser channels
are divided front and back, so that the oil feeders being fixed at the sides, the one
casing contains two entirely separate and distinct channels, one for each cylinder.
The two ignition tubes stand up inside the one casing, two nozzles supplied by
two air pipes from one air chamber forming two automatic burners each directing
a blowpipe flame against the tubes, rendering the flame practically certain for any
length of run as it is very unlikely that both flames will go out at once.
In attaching two sliding blocks so as to make one governor govern both the ex-
haust valves and oil feeders for the two cylinders, I fix a pin in the sliding block
next the governor which passes through the second sliding block so that the second
sliding block moves loosely on the pin for the necessary and adjusted distance.
Both sliding blocks are held within guides. By this construction, one block
will move in first followed by the other at an interval if the speed continues ex-

page_text: cessive. This enables the exhaust to keep clean, (other parts being properly
adjusted) and prevents mis-firing.
Doted this wile L 1
Improvements in and connected with Oil Motors for Vehicles and
Propelling Generally.
We, JAMES ROOTS and CUTHBERT EDWARD VENABLES, both of 100, Westminster
Bridge Road, London, Engineers, 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: —
The ignition tubes are preferably made of platinum, the tube is expanded at
the bottom, the outside then forms a tapered or conical surface which fits within a
nipple of baser metal which is tapered or coned inside to fit the tube. The nipple
is square or hexagon at the top to fit a spanner and has a screw thread below to
screw into the engine. Beneath the nipple and tube of platinum, there is a second
short length of tube also of baser metal which projects into the explosion space of the
engine.
In fitting a motor to a carriage I attach on or near to the pump which cir-
culates the water through the jacket round the tubes to the tank and back again,
a cap or like receptacle into which particles of solid matter which may get into the
tank and tubes and foul the pump valves may be caught.
For reversing on a carriage, I connect a small pulley on the countershaft by a
crossed strap to a larger one on the axle. The large one normally runs loose until,
when it is required to reverse, an ordinary jaw clutch is forced along the axle by
means of a toggle link operated by a brake or other lever, and engages with its
counterpart fixed to the loose running pulley which locks it to the axle.
Fig. 1 is a sectional elevation of the ignition tube.
Fig. 2 is a plan of the same.
Fig. 3 shews the strainer or protector for the valves of the pump.
Fig. 4 shews the arrangement for reversing.
The same letters refer to the same parts in all the figures.
In Figs. 1 and 2, A is the ignition tube preferably of platinum having the end B
communicating with the cylinder made taper or conical. The end B fits in the
conical nipple C made of a baser metal preferably nickel which is tapered or coned
inside to the same degree as the tube. The nipple C is provided with a thread on
the outside and a nut flange at the top to enable it to be held by a spanner and
tightly screwed into the combustion chamber wall D. Below and inside the com-
bustion chamber is the tube E screwed into the same hole and thread as the
nipple C. The inside of the tube E at the top is filed square to enable it to be
screwed in from the outside. It will be seen that the tube A, although extremely
thin, cannot be forced outwards by the explosion owing to the taper or expanded
end B, and at the same time makes a perfect fit without leakage in the tapered
nipple C. The tube E, generally of brass or copper, being screwed in below the
tube A, not only prevents the tube A from being jolted or shaken down but also
determines the time of firing, apparently as accurately as a timing valve.
In Fig. 3, F represents a pump for pumping the cooling water through the
motor jacket. The pump indicated is one of the oscillating type. The casting G
is provided with a plug at the bottom and has the water inlet pipe at H. The

page_text: casting G screws into the expanded casting I to which the pump is attached and
between the two is fixed the strainer J made of wire gauze or perforated metal.
In filling the tanks of a motor vehicle at public houses particles of solid matter
are put into the tank with the water and getting under the pump valves cause a
break-down of the vehicle. The plug K may be taken out from time to time and
the particles removed.
In Fig. 4, Z is the axle of the vehicle, Y is the countershaft which transmits
the power from the motor. W is a small flanged pulley on the countershaft and X
a large one on the axle, connected by a crossed strap U. The pulleys ordinarily
run loose but when the vehicle is required to reverse the ordinary jaw clutch T
is moved into gear by means of the lever T¹ and link T2. S is the chain for run-
ning forward at a slow speed, S¹ the large chain wheel on the axle and S2 the small
chain wheel on the countershaft, S³ its friction clutch. R is the quick speed chain
for going forward, R¹ its chain wheel on the axle, R2 the chain-wheel on the counter-
shaft, and R³ its friction clutch. The part Q slides on feathers by means of a
lever to operate the slow or quick speeds at will. The arrangement shewn offers
a very simple method of reversing where two speeds forward are used and the
countershaft and axle are parallel.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1. The use and construction of the ignition tube A with a tapered end as de-
scribed and shewn.
2. The combination of the tube A with the nipple C.
3. The combination of a tube such as A with a lower tube such as E.
4. The combination of the tube A with the nipple C and lower tube E.
5. In combination with a motor propelling a vehicle and a pump the use and
construction of the strainer such as described and shewn at Fig. 3.
6. In a motor vehicle the combination of the crossed strap and flanged pulleys
with the clutch for reversing, with the friction clutches, chains and chain wheels
for going ahead as described.
Dated this Seventeenth day of January 1898.