An Automatic Vent Peg.
Year: 1894

page_text: Date of Application, 17th Apr., 1894
Complete Specification Left. 17th Jan., 1895-Accepted, 23rd Feb., 1895
An Automatic Vent Peg.
We, WILLIAM BECKETT, of 98 Spring Vale Road, in the City of Sheffield,
Cutler, and SYDNEY BECKETT of the same address, Clerk, do hereby declare the
nature of our invention to be as follows:-
Our invention relates to a vent peg or appliance that will admit air into a beer
barrel or other vessel containing gaseous liquids when required, (such as when
liquid is withdrawn) and will close automatically when sufficient air has entered.
We propose to construct the vent peg in two parts, namely a cup shaped body
having a screwed peg to be screwed into the barrel or other vessel, and a lid, cap,
or cover preferably made to screw upon and close the cup.
The cup or cover has a small centre hole made through it to admit air, and the
cup is made with a shoulder just below the edge or lip upon which a thin elastic
disc or diaphragm is laid, so that when the cap is screwed on, the upper face of the
diaphragm will be very near the inside surface of the cap. A small opening or
inlet port is made through the diaphragm at one side, as near the edge as
possible.
When for example the vent peg is used in a barrel containing beer, the gas
generated inside the barrel forces the diaphragm up against the central opening in
the centre of the cap and closes it, but when a quantity of the beer has been drawn
out, so that an inlet of air is required to permit the beer to run freely from the tap,
and the gas has expanded and lost its pressure, the diaphragm falls and permits the
air to enter through the cap, and the side opening before described, closing again
as the pressure of the gas increases.
Dated the 16th day of April 1894.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.
An Automatic Vent Peg.
We WILLIAM BECKETT, of 98 Spring Vale Road, in the City of Sheffield,
Cutler, and SYDNEY BECKETT, of the same address, Clerk, do hereby declare the
nature of this invention and in what manner the same has to be performed, to be
particularly described and ascertained in and by the following statement:-
Our invention relates to an improved vent peg or an appliance that will admit
the required supply of air into a barrel of beer or other gaseous liquid, when a
quantity of liquid is withdrawn, and that will automatically close when sufficient
air has entered.
ות

page_text: The cover A, is screwthreaded internally to fit upon a corresponding screw-
thread on the body B, and apertures or air ports D, are made in the knob E,-and
communicate with the interior for the admission of air as indicated by arrows in
Fig. 2.
In the upper part of the body is a ledge which supports an elastic diaphragm F,
see Fig. 3, provided with a small air port G, to permit the passage of air from the
cover to the interior of the body, from which it can pass through the tubular peg C,
into the barrel.
When the appliance is screwed into the top of the barrel, the pressure of the
gas forces the diaphragm against the surface of the cover and thus closes both the
inlet from the ports D, and also the air passage G, in the diaphragm F, and thus
prevents any escape of gas, and if thought desirable a coiled spring may be placed
in the cup under the diaphragm to assist such closing action.
When a quantity of liquid has been withdrawn causing the gas confined in the
barrel to expand and lose its power; the air outside enters the ports D, forces
down the diaphragm as shown in Fig. 2, and finds a passage through the opening G,
which is again closed as soon as sufficient air has entered."
Having now particularly described and ascertained the nature of our inven-
tion, and in what manner the same is to be performed we declare that what we
claim is :
1. A vent peg or appliance to admit air into a barrel of gaseous liquid, and to
close again automatically, constructed as hereinbefore described, and as illustrated
in the drawings.
2. The combination with a vent peg of any suitable design and construction, of a
diaphragm of elastic material such as rubber, having an air passage such as G, in
Fig. 2, of the annexed drawings, and acting in the manner herein before described,
for the purpose specified.
ed the 16th day of January 1895.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants..