Improvements in Oil or Gas Motors for Wheeled Vehicles and for General Purposes.
Year: 1896

page_text: Date of Application, 22nd Aug., 1896
Complete Specification Left, 20th May, 1897-Accepted, 26th June, 1897
PROVISIONAL SPECIFICATION.
Improvements in Oil or Gas Motors for Wheeled Vehicles and for
General Purposes.
We, Sir WILLIAM ARROL, of Dalmaruock Iron Works, 241, Baltic Street, in
the County of Glasgow, North Britain, Engineer, and GEORGE JOHNSTON,
of 94, Hope Street, in the same county, Consulting Engineer, do hereby declare
the nature of this invention to be as follows, that is to say :-
This invention has for its object to apply to oil and gas motors improvements
dispensing with the use of water for cooling the cylinders, and rendering such
motors advantageously available for wheeled vehicles. The improved motors may
also be used for general purposes.
In a motor made with the improvements the main cylinder and piston are
arranged so that the latter moves quite up to the inner end of the former which
is made with external flanges or gills to promote the radiation of heat. The inner
end of the cylinder communicates with a tube of an internal area smaller than
that of the cylinder, the interior of this tube forming the compression space, and
being made of comparatively thin copper or other suitable metal, and having
external heat-radiating flanges or gills. The tube which may be straight or
curved, communicates at its further end with the igniting and inlet and exhaust
valve apparatus. When the used contents of the cylinder are expelled a portion
remains in the tube and without mixing to any great extent with the succeeding
charge of iguitablo mixture of vapor or gas and air, serves to increase the volume
receiving the explosive pressure, and to act as a cushion between the explosion
and the piston. The external radiation of heat from the cylinder and tube is
sufficiently rapid to prevent overheating of those parts without the assistance of a
water jacket.
With the improved construction a high degree of compression may be employed
and there may be two or more of the tubes communicating between the inner end
of the cylinder and the igniting and valve apparatus.
Dated this Twenty-first day of August 1896.
EDMUND HUNT,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in Oil or Gas Motors for Wheeled Vehicles and for
General Purposes.
We, Sir WILLIAM ARROL, of Dalmarnock Iron Works, 241 Baltic Street, in
the County of Glasgow, North Britain, Engineer, and GEORGE JOHNSTON,
of 94 Hope Street, in the same county, Consulting Engineer, 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, that is
to say:
This invention has for its object to apply to oil and gas motors, improvements

page_text: dispensing with the use of water for cooling the cylinders, and rendering such
motors advantageously available for wheeled vehicles. The improved motors may
also be used for general purposes.
The invention consists in making a motor, of the kind aforementioned, which
bas its main cylinder made with external Hanges or gills, and so that its piston
moves quite up to its inner end which communicates with one or more tubes of
thin metal also made with external flanges or gills and communicating with the
igniting and inlet and exhaust valve apparatus.
And in order that the said invention and the manner of performing the same
may be properly understood we hereuuto append a sheet of explanatory drawings,
to be hereinafter referred to, and showing part of a motor as made with the
improvements.
Figure, I, of the drawings is a vertical section, and Figure, 2, is a plan.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
In a motor made with the improvements the main cylinder, A, piston, B, (and
other parts not shown) are arranged so that the piston moves quite up to the inner
end of the cylinder which is made with external flanges or gills, C, to promote
radiation of heat. The inner end of the cylinder, A, communicates with a
tube, D, of an internal area smaller than that of the cylinder, the interior of this
tubo forming the compression space, and being made of comparatively thin copper
or other suitable metal, and having external heat-radiating flanges or gills, E. The
tube, D, which is shown straight but which may be curved communicates at its
further end with the igniting and inlet and exhaust valve apparatus, G. When
the used contents of the cylinder, A, are expelled a portion remains in the
tube, D, and without mixing to any great extent with the succeeding charge of
ignitable mixture of vapor or gas and air, serves to increase the volume receiving
the explosive pressure, and to act as a cushion between the explosion and the
piston, B. The external radiation of heat from the cylinder, A, and tube, D, is
sufficiently rapid to prevent overheating of those parts, without the assistance of a
water jacket.
With the improved construction a high degree of compression may be employed;
and there may be two or more of the tubes, D, communicating between the inner
end of the cylinder, A, and the igniting and valve apparatus.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
In an oil or gas motor for a wheeled vehicle and for general purposes a cylinder,
the piston of which moves quite up to its inner end, and which is made with
external flanges or gills, and has one end communicating with one or more tubes
made of thin metal with external flanges or gills and communicating with the
igniting and inlet and exhaust valve apparatus substantially as and for the purposes
hereinbefore described.
Dated this Nineteenth day of
1007
EDMUND HUNT,
Applicants' Agent.