Improvements in Safety Valves and Taps Combined for Kitchen and Hot Water Boilers.
Year: 1894

page_text: Date of Application, 2 th July, 1894
Complete Specification Left, 5th Feb., 1895-Accepted, 9th Mar., 1805
PROVISIONAL SPECIFICATION.
Improvements in Safety Valves and Taps Combined for Kitchen
and Hot Water Boilers.
JONATHAN EDGE 9 Sandringham Terrace Liverpool in the County of
Lancaster, Engineer and THOMAS PUGH RICHARDE 3 and 5 Salthouse Lane
Liverpool in the County of Lancaster Engineer do hereby declare the nature of
this invention to be as follows:-
The object of this improved invention is to combine a safety valve with an
ordinary tap so that by its continual use as a water tap the safety valve will not
stick or jam as do ordinary safety valves by their infrequent use.
The improved invention consists in applying a spring, adjusted to the required
pressure, fixed underneath the valve of tap, the valve is opened for the pur-
pose of drawing water by an ordinary screw-down spindle opening valve againat
the spring.
Dated thin 97sh daw of Iul., 1904
T. P. RICHARDS.
JONATHAN EDGE.
Improvements in Safety Valves and Taps Combined for Kitchen
and Hot Water Boilers.
We, JONATHAN EDGE, 9, Sandringham Terrace, Liverpool, in the County
of Lancaster, Engineer, and THOMAS PUGH RICHARDS, 3/5, Salthouse Lane,
Liverpool, in the County of Lancaster, Engineer, 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 :-
The object of the present invention is to provide a combined safety-valve and
water-tap, so that by the continual use of the appliance as a water tap the liability
of the safety valve to stick or become jammed, which exists in ordinary safety
valves, through their infrequent use, is obviated.
According to this invention a spring, adjusted to the required strength, is placed
beneath the valve of the water tap, which is opened for the purpose of drawing off
water by an ordinary screw-down spindle, which depresses the valve against the
pressure of the spring.
The drawing hereto annexed illustrates a combined safety-valve and water-
tap, constructed according to our invention.
The valve a is carried upon a spindle b provided with a circular flange c.
Abutting against the flange cand encircling the lower part of the spindle 6 is
a spiral spring d which reacts against the lower screw cap e. The upper part
of the spindle 6 enters a recess formed in the bottom of the screw-down spindle f.
A washer f¹ is provided on the lower part of the screw-down spindle f to assist in
preventing leakage of water upwards through the packed gland.

page_text: The screw-down spindle f and body A of the tap are otherwise of the usual
construction.
To open the tap for the purpose of drawing off water, the spindle f is screwed
downwards. The spindle and valve a are thus depressed against the spring d
and the water-way is opened. Upon screwing the spindle upwards, the spring d
by pressing against the flange e closes the valve against the pressure of water
behind it.
The strength of the spring d is such that it will keep the valve a firmly upon its
seat against the normal pressure or head of water behind it, but should that
pressure be considerably increased will permit of the valve being depressed by such
increased pressure and thus allow the excess of pressure to be exhausted through
the outlet of the tap.
It will be seen that a combined safety valve and water tap constructel according
to this invention, in addition to fulfilling the function of an ordinary water tap,
possesses the element of safety against the occurence of an explosion to the
pipes or vessel-as for instance a kitchen or hot water boiler-to which it is
fitted, forming as it does a safety valve, and as all the parts are used every
time water is drawn off, the liability of the parts to become inoperative through
infrequency of use (as exists in other apparatus designed to prevent explosions) is
removed.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :
A combined safety valve and water tap, constructed and arranged substantially
as herein described and illustrated.
is herein described and illustrated.
Dated the A
4th day
J. A. COUBROUGH,
Registered Patent Agent (by Exam.),
10, St. George's Crescent, Liverpool, Applicants' Agent.
J. A. COUBROUGH,
Registered Patent Agent (by Exam.),
10, St. George's Crescent, Liverpool, Applicants' Agent.