Year: 1886

page_text: Date of Application, 17th Nov., 1886.
Complete Left, 22nd June, 1887.
Complete Accepted, 22nd July 1887.
RESERVE
We ALFRED COCKEY, Engineer and WILLIAM SMITH, Engine Fitter, both of the
Iron Works, Frome, in the County of Somerset do hereby declare the nature of this
invention to be as follows:-
This invention has for its object the construction of self-acting bye-pass valves
adapted for application to gas exhausters, whereby safety is ensured in case of a
sudden break down or stoppage of the exhauster from other cause and without
employing a water seal.
The invention consists of a cast iron case or chamber having a vertical inlet and
horizontal outlet for the gas, and a removable cover at top, as well as a removable
cover at the side opposite to the outlet. Fitted to the upper part of the inlet there is
a short cylinder or internal collar, the top of which is faced so as to form a valve seat,
and at the bottom has a bridge-piece to support a thick centrally bored guide. The
valve is a flat disc, but has its outer circumference bent downwards and the extreme
edge turned to a V, semi-circular, or other suitable form and resembles a round self-
sealing retort lid. The under side of the valve is provided with a guide pin which
works through the guide before mentioned. The upper side of the valve has a lug to
which one end of a link is hinged, the other end of the link being hinged to a lever
fixed to a spindle that passes through a stuffing box and projects outside the case of
the valve. The projecting part of this spindle has a lever attached to it, and on this
lever slides a weight, the position of which may be adjusted and set by a screw or
other suitable means. The top cover has a long pin depending from the inside of it
which serves as a stop to prevent the valve from being raised too high.

page_text: The action of the apparatus is as follows. The inlet of the valve being connected
to the inlet of the exhauster and the outlet being placed in communication with the
outlet of the exhauster, or with other apparatus, the valve is so adjusted by means of
the sliding weight that so long as the gas exerts no pressure on the under side of the
valve it will remain closed, and the gas will flow through the exhauster in the usual
way, but on any stoppage of the exhauster, the gas will exert a pressure on the under
side of the valve, when the valve will be lifted thereby, and the will
gas consequently
pass from the inlet to the outlet of the bye-pass. Any escape of gas into the
atmosphere is thus avoided and safety combined with automatic action are ensured.

page_text: We ALFRED COCKEY, Engineer, and WILLIAM SMITH, Engine Fitter, both of the
Iron Works, Frome, in the County of Somerset 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 :-
This invention has for its object the construction of self acting bye pass valves
adapted for application to gas exhausters whereby safety is ensured in case of a
sudden break down or stoppage of the exhauster from other cause, and without
employing a water seal.
In order that the invention may be easily understood drawings are attached hereto
of which the following is a description. Fig. 1 is a side sectional elevation of the
valve. Fig. 2 is a sectional plan through X Y Fig. 1. Fig. 3 is a part side elevation,
and Fig. 4 a part end elevation of the same, while Fig. 5 represents in side sectional
elevation a modification of the valve so as to suit it for insertion in a continuous line
of piping. In each of the views similar letters refer to the same parts.
The invention consists of a cast iron case or chamber A having an inlet B and
outlet for the gas, and a removable cover at top D, as well as a removable cover E
at the side opposite to the outlet. Fitted to the upper part of the inlet there is a
short cylinder or internal collar F the top of which is faced so as to form a valve seat,
and stretching from side to side has a bridge piece G to support a thick, centrally
bored guide H.-The valve I is a flat disc but has its outer circumference J bent
downwards and the extreme edge turned to a V, semi-circular, or other suitable formn
and resembles a round self sealing retort lid.-The under side of the valve is provided
with a guide pin K which works through the guide H before mentioned. The upper
side of the valve has a lug L to which one end of a link M is hinged, the other end of
the link being hinged to a lever N fixed to a spindle O that passes through a stuffing
box P and projects outside the case of the valvo.-The projecting part of this spindle
has a lever Q attached to it, and on this lever slides a weight R the position of which
may be adjusted and set by a screw S or other suitable means. The top cover D has
a long pin T depending from the inside of it which serves as a stop to prevent the
valve from being raised too high.
It will be observed that in the arrangement shown in Fig. 5 the inlet and outlet
are placed opposite one another so as to suit the valve for insertion between pipes
ranging in a line.
The action of the apparatus is as follows.-The inlet B of the valve being connected
to the inlet of the exhauster, and the outlet C being placed in communication with
the outlet of the exhauster, or with other apparatus, the valve is so adjusted by means
of the sliding weight that so long as the gas exerts no pressure on the under side of
the valve it will remain closed, and the gas will flow through the exhauster in the

page_text: usual way, but on any stoppage of the exhauster, the gas will exert a pressure on the
underside of the valve, when the valve will be lifted thereby, and the gas will
consequently pass from the inlet to the outlet of the bye-pass.-Any escape of gas
into the atmosphere is thus avoided, and safety combined with automatic action are
ensured.
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,-
The construction of self acting bye-pass gas valves as herein described and shown
on the drawings.
DL: 00- Tann 1987