An Improved Vent-peg.
Year: 1892

page_text: Date of Application, 1st June, 1892
Complete Specification Left, 21st Feb., 1893-Accepted, 25th Mar., 1893
PROVISIONAL SPECIFICATION
An Improved Vent-peg.
HARRY WALTER HULBERT 50 Ringstead Road Lewisham, S.E. Merchant's
Clerk do hereby declare the nature of this invention to be as follows:-
A cup A with a columeliform bearing B rising from its centre slotted and drilled
at a suitable distance to receive an eccentric arm lever C so that a pressure can be
exerted to expand a thick barrel shaped india rubber washer D (through the centre
of which the bearer B passes) thus expanding the rubber washer D against the
inside of the cup A and against the side of the bearing B completely closing the
air passage E of the vent peg, to allow the air to pass through the vent peg release
the pressure exerted by the lever C on the rubber washer D F is a metal washer.
Dated this 31st day of May 1892.
HARRY WALTER HULBERT.
COMPLETE SPECIFICATION.
An Improved Vent-peg.
I, HARRY WALTER HULBERT of 50, Ringstead Road, Lewisham, London, 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 vent peg by means of which air can be
admitted at any moment without requiring its removal.
The peg is formed with a passage extending vertically through it, the upper end
being made of cut form, with a central post, split or grooved at its upper part,
projecting a short distance above the top. The passage above mentioned opens
through the bottom of the cup at the side or sides preferably bifurcating at its
upper end. Around the central post is placed a thick barrel shaped rubber ring,
which serves as a valve, as hereinafter described. To the post is pivotted a lever
having its underside of cam shape, passing through the groove in the post.
a
Immediately under this lever and on the top of the rubber valve is placed
small metal saucer shaped washer, with a central perforation through which the
post passes. The rubber valve is of such a diameter that in its free position it.
does not bear against the sides of the cup, allowing air to pass freely, but when
compressed from above, the sides bulge outwards, pressing against the sides of the
cup tightly, and cutting off all communication with the atmosphere. To close the
valve the lever is turned down causing the cam to bear upon the metal washer and
press it downwards, expanding the rubber laterally.
In order that the invention may be more clearly understood, reference is had to
the accompanying drawings, in which
Figs. 1 & 2 are vertical sections of two slightly modified arrangements, and
Fig. 3 is a plan of the vent peg.
The vent peg
is furnished with the aperture B, dividing or bifurcating in two
parts at the upper end, opening at the side of the cup shaped top a of the peg.
The post C formed in one with the peg as shown in Fig. 1, or screwed as in Fig. 2,
is split or furnished with the groove c in which the lever D works, pivotted at d.
The lever D is furnished with the cam shaped lower part d', which bears against
the washer E resting on top of the barrel shaped rubber valve F placed on the
post C. Fig. 1 shows the vent peg in open position, allowing air to pass through
[Price 8d.1

page_text: into the barrel, and Fig. 2 shows the parts closed, the lever being turned down and
the rubber compressed vertically expanding it laterally against the sides of
the cup a.
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 :-
1st. A vent peg having a vertical perforation or passage, a cup shaped top and
a central post around which is placed a rubber valve and to which is pivotted a cam
shaped lever, the rubber valve being expanded laterally against the side of the
cup by means of the cam substantially as described and for the purposes specified.
2nd. A vent peg A having a cup shaped top a with a central post C to which
the lever D with cam dis pivotted, a passage B opening into the cup, a
rubber valve F with washer E, operated by the cam lever, substantially as and for
the purposes specified.
Dated this 21st day of February 1893.
GEO. H. RAYNER,
37, Chancery Laue, London, W.C., Agent for the Applicant.