AN IMPROVEMENT IN GAS MOTOR ENGINES
Year: 1883

page_text: LETTERS PATENT to John Imray of No 28 Southampton Buildings Chancery
Lane in the County of Middlesex for an Invention of "AN IMPROVEMENT
IN GAS MOTOR ENGINES"
Schweizer of Paris, France
Communicated to me from Abroad by Jakob
COMPLETE SPECIFICATION filed by the said John Imray at the Office of
the Commissioners of Patents on the 15th February 1883.
JOHN IMRAY of N° 28 Southampton Buildings Chancery Lane in the County
of Middlesex, "AN IMPROVEMENT IN GAS MOTOR ENGINES" Communicated
to me from Abroad by Jakob Schweizer of Paris, France
In a Specification filed by me on the 10th February 1883 N° 742 I described a
method and apparatus for compressing air by successive explosions of combustible
gaseous mixture, an invention communicated to me from abroad by Jakob
Schweizer. The present invention, also communicated to me by the said Jakob
Schweizer, relates to a modification of the apparatus so as to combine together in
one apparatus the arrangements for compressing the air and the engine worked by
it, the whole constituting a gas motor engine, as I will explain referring to the
accompanying Drawings and to the figures and letters marked thereon.
Fig. 1 is a front view, Fig. 2 is a plan and Fig. 3 is a vertical section. A, the
cylinder in which the air is compressed communicates by a spring check valve C
with the motor cylinder K which is fitted with piston p and rod linked to the
crank shaft o carrying fly wheel V. At the upper part of A is an aperture I
for admitting the air and the igniting flame, this aperture having an internal check
valve J. The gas supplied by the pipe d passes through a port c in a slide F and
by passage b to the pipe D which extends upwards within A and is at the top
perforated with numerous boles. From the supply pipe H are two lateral
passages e e provided with cocks f f leading to pipes g and g' which open near the
aperture I, the flame from g passing directly into the aperture to ignite the gaseous
mixture, and the flame from g' being directed against the burner g to rekindle its
flame in case of its extinction. The cylinder K is kept cool by water in a tank B

page_text: surrounding it. A slide E governs by a port a an outlet passage a'. The slides E
and F are worked by a crank k on the shaft o. The action is as follows: The
burners g g¹ being lighted, the flywheel V is turned partly round raising the
piston p in K while the slide E opens discharge from K. As the piston p begins
to descend, the slide E then closing a¹ but the slide F opening passage for gas,
the pressure in A is so far reduced that gas enters by the pipe D and diffuses
itself in the upper part of A, whilst air enters by I and also the igniting
flame from g. The gaseous mixture in A is thus fired, and the air compressed by
the explosion, passing the valve C, propels the piston p during the rest of its
-downstroke. The momentum of the flywheel V causes the upstroke, and the action
is continuously repeated.
Having thus described the nature of this invention and in what manner the
same is to be performed as communicated to me by my foreign correspondent, I
claim
The construction and arrangement of gas motor engine, substantially as herein
described and illustrated by the accompanying drawings.
In Witness: whereof I the said John Imray have hereunto set my hand and
seal this fifteenth day of February in the year of our Lord One thousand
eight hundred and eighty-three.