An Improved Vent Peg for Casks.
Year: 1893

page_text: Date of Application, 30th Oct., 1893
Complete Specification Left, 30th July, 1894-Accepted, 6th Oct., 1894
An Improved Vent Peg for Casks.
I, JOHN PEIRCE HARDING of 13, Northampton Park, Canonbury, London, N.
Examining Officer of Customs, do hereby declare the nature of this invention to
be as follows:-
This invention relates to an improved self-acting vent peg which is adapted to
open automatically, both outwardly, for relieving the excessive internal pressure
due to continued working or fermentation, and inwardly, for permitting the entry of
air to replace the portion of the contents drawn off.
The invention consists in the combination, with any convenient form of tubular
vent-peg, of two ball-valves closing against seats over corresponding orifices
communicating with the bore of the peg, the valves being pressed on their seats
by gravity, or by springs, or both, the springs being regulated by screw-adjustments
and the valves being adapted to be opened, the one by an excess of internal, and
the other by an excess of external, pressure as the case may be.
A convenient form of vent-peg to which to apply my invention is a T-shaped
peg having a tubular stem and cross-head, the valves, which are preferably ball-
valves, being applied to the opposite ends of said crosshead.
The ends of the crosshead may be turned, the one upwards and the other
downwards, and threaded to receive screw-caps enclosing the balls and their springs,
the one ball closing an orifice in the cap and the other the bore of the end on
which the cap screws, this cap being also provided with an orifice, both balls being
in this case held to their seats by their own gravity and by the pressure of spiral
springs regulated by the adjustment of the screw-caps.
I do not, however, limit myself to the T-forn: as it will be obvious that a similar
combination of valves may be applied to nipples on a disc-headed or other form of
tubular vent-peg, as will be readily understood.
Dated this 30th day of October 1893.
J. F. HAKDING,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.
COMPLETE SPECIFICATION.
An Improved Vent Peg for Casks.
I, JOHN PEIRCE HARDING, of 13, Northampton Park, Canonbury, London, N.
Examining Officer of Customs, 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 relates to an improved self-acting vent-peg which is adapted to
open outwardly for relieving any excessive pressure due to continued working or
fermentation, and also inwardly for permitting the entry of air to replace the
portion of the contents drawn off.
The invention consists in the combination, with any convenient form of tubular
vent-peg, of two ball valves pressed on their seats, and respectively adapted to
allow the escape of gas from, or the admission of air to, the bore of the peg, as
required, the one valve opening under internal, and the other under external,
pressure, as the case may be.

page_text: The form of vent-peg to which it is preferred to apply my invention is
represented in central vertical section in the accompanying drawing, forming part
of this Specification, wherein A is the usual threaded tubular stem and B the body
part in which are bored cavities C, C¹, to receive the two ball valves D, D', which
rest upon seats over orifices d, d¹. The valve D is provided with a stem working
in a guide hole in a screw plug E screwed into the upper end of the valve chamber
between which and the ball is confined a spiral spring by which the valve is
pressed upon its seat. 9 is an exit orifice in the side of the valve chamber for the
escape of the gases of fermentation. The orifice d upon which the valve Dis
seated, communicates with the bore a of the stem which also communicates with
the other valve chamber at a point above the valve C¹. The orifice d', upon which
this valve is seated is open to the atmosphere, and the valve D' merely rests on its
seat by its own gravity so as to rise under a very slight excess of external pressure
to admit air to the cask to replace the contents drawn off. The upper end of the
valve chamber C¹ is closed by a screw plug E. The valves so nearly correspond
in diameter with the chambers in which they are fitted that whilst ample exit and
inlet passage ways are left between the valves and their chambers the valves are
sufficiently guided by the sides of the chambers to ensure their return to their
seats after being raised.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The herein described self-acting vent-peg provided with two valves fitted to rest
on seats in chambers communicating with the bore of the peg, the one valve being
spring pressed and adapted to open to internal pressure and the other valve closing
by gravity against external pressure, substantially as specified.
Dated this 30th day of July 1894.
OF JULY 1894.
J. P. HARDING,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.