AN IMPROVED STOP-VALVE
Year: 1886

page_text: Date of Application, 3rd Mar., 1886.
Complete Left, 3rd Dec., 1886.
Complete Accepted, 7th Jan., 1887.
I ALLEN RIDGE of Townley Iron Works Bradford Manchester in the County of
Lancaster Engineer do hereby declare the nature of my invention for AN IMPROVED
STOP-VALVE to be as follows:-
My improved valve is applicable for steam water or other fluid, and will allow of a
free passage of the full diameter of the pipe by one quarter of a turn of the valve
spindle.
The body or casing of the valve is cast or made in a cylindrical form at right angles
to the centre line of the pipe and about twice its diameter and is provided with a
stuffing box through which the valve spindle passes.
On the valve spindle are keyed or fixed two dises which revolve against the ends of
the cylindrical interior, and these two dises are united for about one quarter of their
circumference by a curved shell, which forms the valve to close or open the aperture
of the pipe, the remainder of the space between the two dises being entirely open.
This curved shell or valve is not rigidly attached to the two dises but is connected
therewith by pins so that it has a certain amount of play; and the valve is so arranged
that in closing, the back of this shell is always turned towards the direction in which
the water or other fluid enters so that the pressure of the same will act against the
shell or valve and keep it always tight.
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.

page_text: 1 ALLEN RIDGE of Townley Iron Works Bradford Manchester in the County of
Lancaster Engineer do hereby declare the nature of my invention for "AN IMPROVED
STOP-VALVE "and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My improved stop valve is applicable to steam water or other fluid, and will allow
of a free passage of the full diameter of the pipe by one quarter of a turn of the valve
spindle.
The construction of my improved stop valve will be readily understood on reference
to the annexed sheet of drawings and the following explanation thereof
Fig. 1 is a vertical section and Fig. 2 a horizontal section of a stop valve constructed
according to my invention.
The body or casing a a of the valve is cast or made in a cylindrical form at right
angles to the centre line of the pipe b, and about twice its diameter and is provided
with a stuffing box e, e (Fig. 1) through which the valve spindle d, d passes.
On the valve spindle d, d are keyed or fixed two dises e,e which revolve against the
ends of the cylindrical interior of the casing a, a and those two dises are united for
about one quarter of their circumference by a curved shell, which forms the valve
to close or open the aperture of the pipe b, the remainder of the space between the
two discs e, e being entirely open.
This curved shell or valve, is not rigidly attached to the two discs e, e but is
connected therewith by pins g, g so that it has a certain amount of play, and the valve
is so arranged that in closing, the back of the shell ff (sce dotted lines in Fig. 2) is
always turned towards the direction in which the water or other fluid enters as
indicated by the arrow so that the pressure of the same will act against the shell or
valve f, and keep it always tight.
In the drawing I have shown a handwheel gx, gx for turning the valve spindle but
for valves of large dimensions I prefer to employ a worm and wheel for this purpose.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed I declare that what I claim is :-
First. In a stop valve, the combination with a cylindrical body or casing at right
angles to the pipe (and of larger dimensions) of a valve formed of two discs and a
curved shell constructed and operating substantially as hereinbefore described and
illustrated by the drawings annexed.
Secondly, I claim in a stop valve constructed of two discs and a longitudinal curved
bar or shell, fitting the ends of the said bar or shell loosely in notches in the discs in
order that the pressure of the steam, water or other fluid acting against the back
thereof may cause the said shell to make a perfect joint with the interior of the cylin-
drical body or casing in which it works substantially as hereinbefore described and
illustrated by the annexed drawings.
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.