Improvements in Oil Motor Engines.
Year: 1897

page_text: Date of Application, 3rd July, 1897-Accepted, 3rd July, 1897
Improvements in Oil Motor Engines.
We, SIDNEY STRAKER, of 139 Cannon Street, in the City of London, Consulting
Engineer, EDWARD BONAR CAIRD and THOMAS JAMES RAYNER, both of 777
Commercial Road, Limehouse, in the County of London, Engineers and Copper
Smiths, 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 :-
Our invention relates to a light and simple construction of oil motor engines
specially adapted for propulsion of vehicles, and provided with means of carburetting
the air supply by vapour of oil or other suitable hydrocarbons, and of discharging
the exhaust products of combustion without noise.
We shall describe an oil motor engine according to our invention referring to the
accompanying drawings.
:
Fig. 1 is a side view, Fig. 2 is a longitudinal section and Fig. 3 is an end view
of a single oil motor engine; Figs. 4, 5 and 6 are corresponding views of a twin
engine; Fig. 7 is a section drawn to an enlarged scale of the oil and air supply valve
and mixer, and Fig. 8 is a longitudinal section of an appliance for rendering the
exhaust noiseless. Fig. 9 shews part of perforated plates with slots forming
the cylinders in Fig. 8 Fig. 10 is a section of a pressure relieving cock used in
starting the engine.
As shewn in Figs. 1, 2 and 3, the cylinder A and water jacket B are made in one
and the casing C for the crank and connecting rod is screwed on the end of the
cylinder.
The crank has preferably a counterbalance D. By means of reducing spur gear
within a casing E, a countershaft e is driven at half the speed of the crankshaft,
and on this is a cam which works the rod G of the exhaust valve, opening the valve
in opposition to a spring. F is the flywheel, I the ignition tube and lamp.
As shewn in Figs. 4, 5 and 6 two cylinders side by side and the lower part of the
crank casing C are in one piece, the upper part C¹ of the casing being made
removeable to give access to the cranks which are opposite to one another. The water
jacket J may be, as shewn, made of sheet metal surrounding the cylinder A.
gear within a casing E drives the countershaft e on which there are cams g working
the exhaust valve levers G.
Skew
At L is provided a cock shewn in Fig. 10 which is opened during the starting
of the engine to relieve the pressure resulting from the compressing stroke, so as
to lessen the manual power required for starting. The cock L is furnished with a
spring check valve which closes during the suction stroke.
The air valve H (Fig. 7) is opened by the suction stroke of the piston in opposition
to the adjustable spring, and the air in passing the edge of the valve takes wh it
oil supplied from the pipe O and regulated in amount by the screw needle valve N,
the handle of which carries an index pointing to divisions on a dial plate M.
additional supply of air may enter by a pipe P provided with a regulating cock or
valve, this air being divided into small streams by passing through holes, in a
An

page_text: conical head p, these streams mingling with the air coming from above in the
conical passage. The mixture of air and oil passes by Q to the cylinder.
It is of advantage to make a communication R to a chamber surrounding the
exhaust pipe for part of its length, so that air heated by contact with the hot pipe
may be supplied. The passage R divides into two branches S and T each furnished
with a cock or valve, the one branch S communicating with the heated chamber
and the other branch T opening to the atmosphere, so that either heated or cold air,
or a mixture of them, may be supplied to R. We find it of advantage to furnish
the passage by which this mixture of air and oil vapour passes to the cylinder
with a small cock q opening to the atmosphere so that by admitting more or less
air we can regulate the speed of the engine as desired.
The appliance (Fig. 8) for making the escape of the exhaust gases noiseless
consists of a cylinder U having within it several concentric cylinders V of
perforated sheet metal, the perforations being preferably in the form of parallel
narrow slots as shewn in Fig. 9. The exhaust gases entering at u are broken up
into thin streams in passing through the slots, and issue without noise at v.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. A single cylinder oil motor engine constructed substantially as described with
reference to Figs. 1, 2 and 3.
2. A twin cylinder oil motor engine constructed substantially as described with
reference to Figs. 4, 5 and 6.
3. Apparatus for supplying the engine with oil and air, constructed and operating
substantially as described with reference to Fig. 7.
4. Connecting the apparatus referred to in the preceding claim to a chamber
surrounding the exhaust pipe, substantially as and for the purpose set forth.
5. An appliance for rendering escape of the exhaust gases noiseless, substantially
as described with reference to Fig. 8.
6. In combination with the cylinder a pressure relieving cock with spring check
valve substantially as and for the purpose set forth.
Dated this 3rd day of June 1897.
ABEL & IMRAY,
Agents for the Applicants.