Improved Apparatus applicable to Gas Engines:
Year: 1896

page_text: Date of Application, 31st Dec., 1896
Complete Specification Left 25th Sept. 1897-Accepted. 20th Nov.. 1897
PROVISIONAL SPECIFICATION.
Improved Apparatus applicable to Gas Engines:
I, WALLIS ASKHAM, 11 Castle Street, Sneinton, Nottingham, Machinist, do
hereby declare the nature of this invention to be as follows:
vur improvements relate to self starters and inlet valves for gas engines. Eachi
self starter consists of a flanged chamber with a screw threaded nipple below it..
to connect it to the engine cylinder, the top of the chamber is screw threaded
interiorly to connect it to a platform provided with a male thread on.the under-
side, the bottom of which forms a seat for a vertical stemmed valve grooved on:
one side part of its length. The upper end of the valve stem is slotted:
horizontally to, engage with one end of a plate spring, the other end of the
spring engages with a slot in one end of an axle piu rocking in a bearing at the
outer end of the platform, the other end of the axle carries a hand lever to raise.
or lower the valve, a stud on one side of the lever engages with a slot in a spring,
quadrant to lock the valve open or shut.
.
The axle pin bearing is capable of adjustment to or from the valve to regulate.
the pressure of the plate spring or the hand lever may rock on a stud projecting.
from the platform, the lever being provided with a pair of slotted quadrants cach
engaging with a piu passed through the top of the valve, the lever is provided
with an adjustable weight to regulate the valve.
When the valve is down the explosive mixture is fired' by a small lighted jet-
of gas in the usual way.
Each inlet valve consists of a flanged double ninnle screw threaded' at one end.
to connect it to the explosive chamber of the engine, and screw threaded at the:
other end to connect it to a conical valve chamber provided with a nipple to
connect it by a union to a gas supply pipe. The valve is perforated a part of its
length, the perforation terminating in a side passage leading to the union
connection. The outer end of the valve carries a spring washer to hold it up to.
its seating, beyond the spring the valve carries a hand wheel for opening or closing
the mlet The spring washer will release the valve when it sticks, upon the
hand wheel being pressed inwards.
Doted this Thirtieth days of December 1896.
9.
COMPLETE SPECIFICATION:
Improved Apparatus applicable to Gas Engines.
I, WALLIS ASKIIAM, 11 Castle Street, Sneinton; Nottingham, Machinist, do.
35 hereby declare the nature of this invention and in what-manner, the same is to
[Price 18d

page_text: be performed, to be particularly described and ascertained in and by the following
statement:-
DESCRIPTION OF THE DRAWINGS:
Figure 1 shows a side view of a self starter for a gas engine.
Figure 2 an end view loking at the right end of Figure 1, and showing a
chamber in vertical section with a valve closed.
Figure 3 shows a side view of a self starter provided with a
lever with a chamber in vertical section, and a valve open.
Figure 4 shows an improved inlet valve in section.
weighted hand
The corresponding parts are indicated by the same numbers where necessary
in Figures 1 and 2.
Each self starter consists of a flanged chamber 1 with a screw threaded nipple
2 below it to connect to a gas engine cylinder, the top of the chamber is screw
threaded interiorly to connect it to a platform 3 provided with a male screw thread
on the underside, the bottom of which forms a seat for a vertical stemmed valve 4
having a groove 5, shown by a dotted line at Figure 1, on one side for a part of.
its length.
The upper end of the valve stem is slotted horizontally to engage with one end
of a plate spring 6 which lies between two turned down ends of a folded wire 7
secured to the top of the valve stem, the other end of the spring engages with a
slot in one end of an axle pin 8 in which it is secured by a set screw, the axle
pin rocking in a bearing 9 at the outer end of the platform 3, the bearing is
capable of adjustment in a slot in the platform to or from the valve to regulate
the pressure of the plate spring, the bearing when adjusted being secured in
position by a screw 10. The other end of the axle pin terminates in a hand lever 11'
hinged to a short lever provided with a stud 12, above the hinge a pin carrying
a coiled spring 13 projects from the hand lever, and ensures the stud 12 engaging
with either of two slots in a quadrant 14. When the stud is in the upper slot the
valve 5 is held shut as shown at Figures 1 and 2, when in the lower slot the valve
is held open in the position shown at Figure 3.
Or a self starter consisting of a chamber 1 platforın 3 and a vertical stemmed
valve 4 with a groove 5 as shown in vertical section at Figure 3 may be provided
with a hand lever 6 rocking on a stud or axle 7 carried by a slotted bearing 8
secured to the platform, outside the bearing the stud 7 passes through a pair of
slotted quadrants 9 secured at one end by a pin 10 held in position by a set screw
in. the lower side of each quadrant, the pin passes through the top of the valve
stem. The lever 6 is screw threaded the greater portion of its length with an
adjustable weight 11 to regulate the valve. Either of the above described self
starters may be applied to a gas engine by removing the usual indicator plug
and substituting the screw threaded nipple 2 shown at Figures 1 and 2; or the
starter may be fixed on the exhaust cap of the gas engine.
When the valve is open as shown at Figure 3, the explosive mixture passes
out through the groove 5 of the valve and is fired by a small lighted jet of gas
from a nipple 15 provided with a union to connect it to a supply of gas in the
usual-way.
By the above means the largest explosive force is obtained with the smallest
quantity of gas from the ordinary pressure of the gas main.
An improved inlet valve shown in section at Figure 4 consists of a flanged
double nipple 1 screw threaded at 2 to connect it to the chamber of the timing
valve of a gas engine and screw threaded.at 3 to connect it to a conical valve
chamber 4 provided with a nipple 5 to connect it by a union to a gas supply pipe.
The valve 6 has a perforation 7 a part of its length terminating in a side passage 8
leading to the union connection. The outer end of the valve caries a spring
washer 9 to hold it up to its seating, beyond the spring the valve carries a hand
wheel 10 for opening or closing the inlet. The spring washer allows the valve
to be released when it sticks in its seating upon the hand wheel, being pressed

page_text: inwards. The greater the pressure put on the valve, the less liability to leakage,
the cut off is instantaneous and cannot be accidentally opened.
The inlet valve may be applied to the chamber of the timing, valve of the gas
engine, or at any other place to readily admit the first charge of gas to the
cylinder.
An inlet valve constructed as before described when opened admits the first
charge of gas into the chamber where the explosion takes place and forces a
portion of air out of the chamber through the starter which mixing with the gas
in the chamber forms an explosive mixture, the valve is then closed and the
explosive mixture is fired from the starter gas jet light in the usual way. The
explosive mixture is thus prevented from being forced back through the closed
inlet valve.
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:
1. The employment of self starters for gas engines, substantially as described
and shown at Figures 1, 2 and 3 of the Drawings annexed.
2. The employment of instantaneous cut off inlet valves for gas engines,
substantially as described and illustrated at Figure 4 of the drawings annexed.
Dated this Twenty-fourth day of September 1897.
H. W. GOUGH, C.E.,
Agent.