Improvements in Valves or Cocks for Prevention of Frost Bursts.
Year: 1896

page_text: Date of Application, 20th Jan., 1896
Complete Specification Left, 20th Feb., 1896-Accepted, 28th Mar., 1896
PROVISIONAL SPECIFICATION.
Improvements in Valves or Cocks for Prevention of Frost Bursts.
I FREDERICK CONEY of Windmill Hill, Ash, Surrey Plumber do hereby
declare the nature of this invention to be as follows:-
This invention is designed to prevent the bursting of water supply pipes by
frost.
It is well known that if the water can be withdrawn from the pipes during times
of frost no injury can take place. For this purpose a small cock is often fixed
inside the main cock of the supply pipe. The weak point of this arrangement is
that it is so easy to forget to use the cock, and consequently the damage is apt to
occur through neglect.
My invention provides a valve or cock in which the draw off, or, emptying action
is automatic.
This is effected by forming the stop cock or main cock with a valve, which has
two seats one above the other. When the cock is turned on say for supplying a
cistern, the valve is drawn against the upper seat, and there is a clear flow of water
inwards. When the water is turned off, the valve is screwed against its lower seat,
and the supply is stopped. In this position the water in the rising main which fills
the cistern, has access to holes above the valve, which communicate with a cavity
in the valve spindle, and consequently the water in the pipe all runs away to waste,
and the main is thus automatically emptied. These holes being above the valve are
shut off when the valve engages with its upper seat.
Dated this 20th day of January 1896.
S. S. BROMHEAD,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Valves or Cocks for Prevention of Frost Bursts.
I, FREDERICK CONEY of Windmill Hill, Ash, Surrey Plumber, 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 is designed to prevent the bursting of water supply pipes by
frost.
It is well known that if the water can be withdrawn from the pipes during times
of frost no injury can take place. For this purpose a small cock is often fixed
inside the main cock of the supply pipe. The weak point of this arrangement is
that it is so easy to forget to use the cock and consequently the damage is apt to
occur through neglect.
My invention provides a valve or cock in which the draw off or emptying action
is automatic.
This is effected by forming the stop cock, or main cock with a valve which has
two seats one above the other. When the cock is turned on say for supplying a
Price 8d.1

page_text: cistern, the valve is drawn against the upper seat and there is a clear flow of water
inwards. When the water is turned off, the valve is screwed against its lower seat,
and the supply is stopped. In this position the water in the rising main which fills
the cistern, has access to holes above the valve, which communicate with a cavity
in the valve spindle, and consequently the water in the pipe all runs away to waste,
and the main is thus automatically emptied. These holes being above the valve
are shut off when the valve engages with its upper seat.
The spindle can have any kind of top such as the thumb piece shown, or a wheel
or a square end to engage with a lever key or any other suitable fitting and the
inlet and outlet may be male or female or with tinned tail to solder to lead pipe.
I will now describe the invention with reference to the accompanying drawings
in which
Fig. 1 is a sectional elevation of my improved cock and Fig. 2 an enlarged view
of the valve employed therein.
a is the valve provided with two bearing surfaces a³, a³, and also with channels or
tubular openings a, a, which communicate with the inside of the hollow spindle c
upon which the valve is mounted.
When the valve is screwed down its lower surface a bears upon the valve seat b,
but when it is screwed up, its upper surface a bears against the valve seat b¹.
When it is in the lower position the chamber f is by means of the openings a¹, a¹,
in communication with the inside of the hollow spindle c and any water contained
in f will escape thereby; but if the valve is in the raised position the openings a¹ a
are closed by the seat b, and the water is allowed to flow freely from the inlet
chamber g. through the outlet f. The valve is caused to move up or down by means
of the usual screwed thread d, upon the valve spindle which can be turned by a key,
wheel, or thumb piece as at c or by any other suitable means.
Packing glands and other similar devices are employed as in ordinary cocks.
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 :
In a stop cock or main cock for water the valve a, with its upper and lower
seats 6', b, partially hollow spindle c and upper and lower glands and packing, said
valve being furnished with the appertures a communicating with the cavity of the
spindle as herein described and set forth.
Dated this 20th day of February 1896.
S. S. BROMHEAD,
97 Newgate Street, London, Patent Agent.