IMPROVEMENTS IN ENGINES WORKED BY GAS OR VAPOUR to be as follows
Year: 1884

page_text: We WILLIAM HILL and JOHN HAUGHTON HILL both of the Walmgate Iron
Works in the City and County of York Mechanical Engineers do hereby declare
the nature of said invention for "IMPROVEMENTS IN ENGINES WORKED BY GAS OR
VAPOUR to be as follows:-
"
-
According to this invention we improve the construction and action of engines
worked by gas or vapour, all as hereinafter described. The improvements to be
described refer partly to the invention described in our Provisional Specification of
17th March 1884 N° 5007. We provide the cylinder as before with a jacket having
internal ribs or partitions giving an extended cooling surface and forming passages
through which the air is to pass in a very circuitous manner for the purpose of
becoming heated before it is used in admixture with the gas for producing the
explosion and for the purpose at the same time of keeping the cylinder sufficiently
cool. The ribs or partitions may be of any suitable form or arrangement so long as
the two aforesaid purposes are accomplished thereby. The heated air is drawn into
and from the cylinder jacket and in order to cause a more rapid and extended
circulation through the jacket passages we may employ the exhaust on the induced
current principle. The heated air passes as before through an india rubber valve
and then through a light steel valve which latter serves to keep back the explosion
from the rubber valve. The seating for this steel valve is made to recede so that
the valve when free comes away from the seat by its own weight. The air then
passes into a chamber where it is commingled with the gas which enters by small
openings.
The gas is admitted into the aforesaid mixing chamber through a light self-acting
mushroom valve. The mixing chamber is as before formed in a cylindrical valve
worked from a cam or eccentric and has a wedge shaped part against the side, of
which the incoming air impinges and is directed up towards the apex where it
meets the gas which comes in a direction against the apex. The gas and air thus
become properly mixed and this superior uniform explosive mixture flows off
laterally. We employ no slide for igniting the mixture but provide instead of that
a light self acting valve through which the flame is drawn when the aperture of the
valve is uncovered by the piston. The flame is by preference that of a "Bunsen "
burner. The light steel valve is made in the form of a thin flap hung loosely from
a pin, the valve seat receding so that the valve when free comes away from the face
of the seat by its own weight. This valve is self acting and ignites the mixture as
soon as there is an explosive mixture in the cylinder, but cannot explode the
mixture until the valve aperture is uncovered by the piston at its outstroke. The
ignition valve is held or guided in position sideways by two pins or projections.
Dated this nineteenth day of September 1884.

page_text: COMPLETE SPECIFICATION.
We WILLIAM HILL and JOHN HAUGHTON HILL both of the Walmgate Iron
Works, in the City and County of York, Mechanical Engineers do hereby declare
the nature of said invention for "IMPROVEMENTS IN ENGINES WORKED BY GAS OR
VAPOUR" and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
According to this invention we improve the construction and action of engines
worked by gas or vapour all as hereinafter described.
The improvements to be described refer partly to the invention described in the
Specification of our Patent dated 17th March 1884 N° 5007.
And in order that our invention may be fully understood we will describe the
same with reference to the accompanying drawings, of which Figure 1 is a vertical
cross section through the cylinder of the engine; Figure 2 a horizontal section
through same, and Figures 3 and 4 detail views of the ignition valve.
We provide the cylinder A as before with a jacket having internal ribs or
partitions 1 giving an extended cooling surface and forming passages through
which the air is to pass in a very circuitous manner for the purpose of becoming
heated before it is used in admixture with the gas for producing the explosion and
for the purpose at the same time of keeping the cylinder sufficiently cool. The ribs
or partitions 1 may be of any suitable form or arrangement so long as the two
aforesaid purposes are accomplished thereby. The heated air is drawn into and
from the cylinder jacket. The heated air from the jacket and the exit pipe D
passes as before through a light steel valve I which latter serves to keep back the
explosion. The seating for this steel valve is made to recede so that the valve I
when free comes away from the seat by its own weight. The air then passes into
a chamber 2 where it is commingled with the gas which enters by small openings 5.
The gas is admitted into the aforesaid mixing chamber 2 through a light self-
acting mushroom valve C. The mixing chamber is as before formed in a cylindrical
valve worked from a cam or eccentric and has a wedge shaped part 3 against the
side of which the incoming air impinges and is directed up towards the apex where
it meets the gas which comes in a direction against the apex. The gas and air
thus become properly mixed and this superior uniform explosive mixture flows off
laterally into the cylinder. We employ no slide for igniting the mixture but
provide instead of that a light self acting valve K shown separately also at
Figures 3 and 4 through which valve the flame is drawn when the aperture of the
valve is uncovered by the piston. The flame is by preference that of a Bunsen
burner L. The light steel valve K is made in the form of a thin flap hung loosely
from a pin, the valve seat receding so that the valve when free comes away from
the face of the seat by its own weight. This valve is self-acting and ignites the
mixture as soon as there is an explosive mixture in the cylinder, but cannot explode
the mixture until the valve aperture is uncovered by the piston at its outstroke.
The ignition valve is held or guided in position sideways by two pins or pro-
jections K¹ shown in the end view Figure 4.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that, what
we claim is
First: Cooling the cylinder of a gas engine by circulating air in passages formed
in a jacket round the cylinder which air having been thus heated by contact with
the hot cylinder is then used for admixture with the gas for producing the explosive
mixture substantially as described and shown.
Second: The self-acting mushroom valve C for admitting the gas.
Third: The self-acting igniting valve K.
Fourth. The combination of norts shown on the denoiam
BREWER & JENSEN,
For the Applicants.