Improvements in Gas Engine Details.
Year: 1892

page_text: Date of Application, 3rd Mar., 1892
Complete Specification Left, 27th Dec., 1892-Accepted. 11th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Gas Engine Details.
1, FREDERICK WILLIAM LANCHESTER, of 13, Bedford Row, London, W.C.,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in gas engine details and it comprises-
improved details of governing gear; improved construction of connecting rod ends:
and improved arrangement of chimney and Bunsen burner for heating the igniting
tube.
In carrying into effect my improved governing gear I construct a swinging link
of peculiar construction which I attach or connect to the gas valve spindle. The
link is free to swing from its pivot and it has a hook gap and a shaped guiding slot;
the book gap being at the position furthest removed from the pivot while the
guiding slot is near the pivot. I arrange the exhaust valve lever of the gas engine
so as to have a permissive movement after closing the exhaust valve caused by a
spring forcing the exhaust lever roller against a cam. While the exhaust valve is
opening, a pin on the lever enters the guiding slot in the swinging link and swings
the link to one extreme position. When the exhaust valve closes, the swinging
link is liberated by the withdrawal of the pin from the slot and the said link falls to
its lowest position in a time of constant duration.
The exhaust valve pin is of knife edge shape at one part and a knife edge
or plate guards the entrance to the hook gap of the swinging lever. When the
engine is running at or below normal speed the pin passes by the knife edge into
the hook gap and the further movement of the exhaust lever opens the gas valve
at the required time by means of the swinging link. When the engine runs over
speed the hook gap does not swing over far enough for the knife edge of the pin on
the exhaust valve lever to engage, and so the pin passes the gap and the gas valve
remains closed.
In carrying into effect my invention of an improved connecting rod end, as applied
to the small end of the rod, I construct a brass cut through on one side and screwed
down at this side by an adjustable screwed pin preferably actuated from a square
on the end and having a shoulder and a lock nut between which the brass is firmly
clamped to the connecting rod; beyond the shoulder this pin is screwed and enters
that part of the brass beyond the saw cut. In order to set up or back, the lock
nut is slightly slacked and the pin is moved in the direction required.
For the large end of the rod I prefer two adjusting screw pins with screws of
larger diameter than the pins forming shoulders to which the screws are pulled up.
By this device the brasses may be locked at any desired distance apart and yet the
screws may be pulled home by their nuts outside. The larger screws work in one
brass while the nuts fit on the smaller ends passing through the other brass.
My invention as applied to Bunsen burners is intended to prevent any draught
or blow down the chimney from affecting the Bunsen flame permanently by causing
it to buru back. It consists in arranging the air inlet to the Bunsen (that is the
air holes supplying air to mix with the gas in the Bunsen tube) in such manner
that it is in connection with the interior of the igniter tube chimney. This I con-
veniently accomplish by forming a hollow or tube projection from the chimney at
its lower part and enclosing the Bunsen tube within this space. Air is supplied to
this space at one opening and the Bunsen air holes are arranged within the space
at a sufficient distance from the flame or with flame stops to prevent the flame from
being blown back or carried back to the holes. The effect of a blow down acts
equally on the air holes and the Bunsen end and so the flow of gas is not interfered

page_text: with and the Bunsen burns without interruption where otherwise it would "go
back" and burn within the tube.
Dated this 2nd day of March 1892.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Gas Engine Details.
I, FREDERICK WILLIAM LANCHESTER, of 13 Bedford Row, London W.C.
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:-
My invention relates to improvements in gas engine details and it comprises-
improved details of governing gear, and improved construction of connecting rod
ends.
Referring to the accompanying sheet of drawings-
Figure 1 is a side elevation part in section of my governing arrangement.
Figure 2 is an end elevation corresponding to Figure 1.
Figure 3 is an elevation part in section of my connecting rod, and Figure 4 is a
plan of the connecting rod.
In carrying into effect my improved governing gear (see Figures 1 and 2) I.
construct a swinging link A of peculiar construction which I attach or connect to
the gas valve spindle B. The link is free to swing from its pivot A¹ and it has a
hook gap As and a shaped guiding slot A2; the hook gap being at the position
furthest removed from the pivot while the guiding slot is near the pivot. I arrange
the exhaust valve lever D of the gas engine so as to have a permissive movement
after closing the exhaust valve caused by a spring forcing the exhaust lever roller
against a cam. While the exhaust valve is opening a pin D' on the lever D enters
the guiding slot A in the swinging link A and swings the link to one extreme
position, which position is indicated at Figure . When the exhaust valve closes,
the swinging link is liberated by the withdrawal of the pin D' from the slot A' and
the said link falls to its lowest position in a time of constant duration. The link
may be weighted for this purpose but I prefer to operate by a spring which can be
adjusted as shown at E.
The exhaust valve pin D' is of knife edge shape d at one part, and a knife edge
or plate A guards the entrance to the hook gap A of the swinging lever. When
the engine is running at or below normal speed the pin D¹ with its knife edge d
passes by the knife edge A* into the hook gap and the further movement of the
exhaust lever D in the direction of the arrow marked 1 opens the gas valve C at
he required time by means of the swinging link A. When the engine runs over
speed the hook gap A³ does not swing over far enough in the direction of the arrow
marked 2 for the knife edge d of the pin on the exhaust valve lever to engage, and
so the pin D passes the gap and the gas valve C remains closed.
The upper and lower positions of the pin D' are indicated in dotted lines on
Figure 1.
In carrying into effect my invention of an improved connecting rod end see
Figures 3 and 4, as applied to the small end of the rod, I construct a brass F cut
through on one side at F and screwed down at this side by an adjustable screwed
pin G¹ preferably actuated from a square G³ on the end and having a screwed
shoulder end G and a lock nut G2 between which the brass is firmly clamped to
the connecting rod; beyond the shoulder this pin is screwed at G³ and enters that
part of the brass beyond the saw cut. In order to set up or back the lock nut G' is
slightly slacked and the pin is rotated in the direction required by a key on the
square G³. The pin H I employ for screwing the other end F of the brass F

page_text: to the connecting rod. For the large end of the rod I prefer two adjusting screw
pins I, I with screws I, I of larger diameter than the pins forming shoulders to
which the screws are pulled up, against the inner half of the brass K. By this
device the outer brass L and the inner brass K may be locked at any desired
distance apart and yet the screws may be pulled home by their nuts I, 1. The
larger diameter screws work in one brass that is L while the nuts 12, I fit on the
smaller ends passing through the other brass K. In this case also the distance
between the brasses K, L is adjusted by turning the squares I³, 13 while the
shoulders are pulled home at the brass K by the nuts 12, 12.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
1. A gas engine governor arranged substantially as herein before described and
as illustrated at Figures 1 and 2 of the accompanying drawings.
2. A gas engine governor in which a swinging link is moved to one position by
one movement of a lever so that when the lever moves to open the gas valve the
speed of the engine determines whether the said lever engages the link and opens
the valve or not, substantially as hereinbefore described.
3. The arrangement of gas engine connecting rod ends adjusted substantially as
hereinbefore described and as illustrated at Figures 3 and of the drawings.
4. In a gas engine connecting rod end the adjusting device comprising a bolt or
bolts with shouldered screw, lock nut screw and square or its equivalent to permit
of the distance between the brass being adjusted and locked down to the shoulder
substantially as hereinbefore described.
Dated this 24th day of December 1892.
MARKS & CLERK,
13, Temple Street, Birminghamn, Agents for the Applicant.