Year: 1885

page_text: the nature of this invention to be as follows:-
This Invention relates to a peculiar arrangement and construction of the various
parts for better economising and utilising, the heat of the burning charge in
gas motors,
In carrying out this invention, it is proposed to make a hollow piston, rather
longer than the proposed stroke of the engine, with suitable packing rings at that
end where the rod is attached. The cylinder, to be made equal to the length of stroke
and piston together, and that part where combustion takes place, to be surrounded
by a casing, or air chamber, for arresting, and absorbing the heat radiating through
the cylinder; and is closed by a cover, having a port for admitting the air from the
casing to the cylinder and is closed by a cover, having a port for admitting the air
from the casing to the cylinder, and exhausting the burnt gases; against this
cover, a revolving valve is held in position by a plate and springs.
The air is compressed in the front end of cylinder-which is provided with a
cover having suitable valves for that purpose and is forced into the casing. The
gas may be compressed with the air, but it is preferred to compress it separately,
and pass it into the cylinder along with the air from the casing."
In order that the said Invention may be fully understood, I will proceed more
particularly to describe the same-it will be understood that the same letters
indicate corresponding parts in the several figures in the accompanying drawing.
Fig. 1 represents a longitudinal section, through the cylinder A, casing B,
piston C, cylinder covers E and F, revolving valve G, slide for lighting H, air
valves, a, and passage to casing b.
Fig. 2 a horizontal section through gas compressor K.
Fig. 3 elevation of compressor cover showing arrangement of valves a.
Fig. 4 elevation of combustion chamber cover showing position of ports for
admitting charge.

page_text: It will thus be seen, that on starting the engine when the revolving valve G
opens the port p, compressed air from the casing B, and gas from the pump K,
flows into the cylinder, and by expanding, propels the piston C forwards a portion
of its stroke, when the revolving valve closes the port, and the charge is lighted
completing the stroke, compressing the air in front of the piston, and forcing it into
the casing B, when the piston returns, expelling the burnt charge, through the
opening D, and a fresh charge is admitted, and the process is repeated.
Any other form of valve may be used, which will cut off the supply at the
required part of the stroke. By this arrangement of piston the lubricant is not
exposed to the highly heated cylinder.
100K

page_text: I JOHN GILLOTT of 8 Prospect Street Barnsley, in the County of York, Engineer,
do hereby declare the nature of my invention for IMPROVEMENTS IN GAS MOTORS
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 peculiar arrangement and construction of the various
parts for better economising, and utilising the heat of the burning charge in
gas motors.
In carrying out this Invention it is proposed to make a hollow piston, rather
longer than the proposed stroke of the engine, with suitable packing rings at that
end where the rod is attached. The cylinder to be made equal to the length of
stroke, and piston together, and that part where combustion takes place, to be
surrounded by a casing, or air chamber for arresting and absorbing the heat
radiating through the cylinder, and is closed by a cover having a port for admitting
the air from the casing to the cylinder and exhausting the burnt gases.-This casing
or air chamber may be surrounded by lagging or any other non-conducting
material-Against this cover a revolving valve is held in position by a plate
and springs.
The air is compressed in the front end of the cylinder,-which is provided with a
cover having suitable valves for that pupose and forced into the casing. The gas
may be compressed with the air, but it is preferred to compress it separately, and
pass it into the cylinder, along with the air from the casing.
In order that the said Invention may be fully understood, I will proceed more
particularly to describe the same. It will be understood that the same letters
indicate corresponding parts in the several figures in the accompanying drawings.
Fig. 1 represents a longitudinal section thro' the cylinder A, casing B, piston C,
cylinder covers E & F, revolving valve G, slide for lighting H, air valves a, and
passage to casing b.
Fig. 2 a horizontal section through same, showing gas compressor or pump K.
Fig. 3 elevation of air compressor cover, showing arrangement of valves a, a.
Fig. 4 elevation of combustion chamber cover, showing position of ports for
admitting the charge.
Fig. 5 revolving valve, showing exhaust opening D.
It will thus be seen that on starting the engine when the revolving valve G,
opens the port p, compressed air from the casing B, and gas from the pump K
flows into the cylinder, and by expanding, propels the piston C, forward a portion
of its stroke, when the the revolving valve G closes the port, and the charge is
ignited, the explosion completing the stroke, and compressing the air in the front
of the piston, and forcing it into the casing B, when the piston returns, expelling
the burnt gases, through the opening D, and a fresh charge is admitted, and the
process is repeated.
Any other form of valve may be used which will cut of the supply at the required
part of the stroke. By this arrangement the lubricant is not exposed to the highly
heated part of the cylinder and piston.

page_text: The cylinder may be made in two separate parts and joined with a non
conducting substance between, and the piston may also be made in the same
manner.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is,
Firstly. The construction of the cylinder and piston in such a manner, as to
prevent the burning gases acting upon the part of the piston and cylinder which
requires to be lubricated, thus preventing the lubricant from being destroyed by
the resultant heat.
2ndly The utilising of the heat produced by the burning charge partly by
preventing the radiation through the cylinder walls, and partly by the the absorption
that which does pass-by surrounding the cylinder with a casing or receiver, into
which air is compressed by the advancing piston, this air being increased in pressure
by the absorption of heat, is then expanded upon the piston to produce the next
stroke.
Thirdly. By forcing the gas into the cylinder by a separate pump, and the
mixture taking place in the cylinder, any danger of an explosion in the casing or
receiver is prevented.