Improvements in the Construction of Cocks and Valves.
Year: 1889

page_text: Date of Application, 19th July, 1889-Accepted, 24th Aug., 1889
COMPLETE
SPECIFICATION.
Improvements in the Construction of Cocks and Valves.
I HENRY EDWARDS of 33 Princes Street, Stanford Street, in the County of Surrey,
Engineer, do hereby declare the nature of my said 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 my invention is to manufacture improved cocks and valves, suitablo
for water, oil, steam, and other fluids.
The type of cock to which my invention is applicable, is that having an intermediate
seat, and such seat may be made either horizontal, diagonal, vertical or inverted. This
scat has a circular hole, surrounded by an annular facing on its upper side. A
cylindrical valve is fitted to this seat, the underside of the valve being formed of
Woodite, cork, vulcanite, rubber, gutta percha, or other suitable elastic material,
(preferably woodite). The elastic material is held against a metal disc by a nut, and
the disc and elastic material are surrounded by a ring, which keeps the elastic material
in position, and also allows its elasticity to have free play upon the seat.
And in order that my said invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings in which similar letters of
reference indicate corresponding parts, and which drawings illustrate the application
of my invention to a steam stop valve, from which its application to other forms of
cocks and valves will be readily understood.
Fig. 1 is an elevation, Fig. 2 a section, and Figs. 3. 4 and 5 detail views of my
invention. a is the body of the cock or valve. is the horizontal seat, having a
central opening for the passage of the fluid. c is a cap or cover, screwed to the body
of the valve. d is a vertical screw, fitted with the hand wheel e. f is a metal disc
formed with a guide pin g and screw h.
is a disc of woodite or other elastic
material, which is hold up to the disc f by means of the nut m. n is a loose ring
fitting the disc and enclosing the elastic material k. The ring n is free to slide
upwards upon the disc f so as to allow the elastic disc to effectually seal the
opening. The lower end of the screw d is bored to receive the guide pin g. o is a
gland formed of woodite or other clastic material, which acts as packing to tho
plain end of the screw d; the pressure of the steam or other fluid keeping it free
from leakage.
Fig. 3 is an elevation of the valve disc. Fig. 4 is a plan, and Fig. 5 a view of
the underside of the same.
The valve is shut by the screw d pressing the valve disc to its seat, as shown in
Fig. 2. On turning the screw d backwards the valve disc is released from the
seat, and raised by the pressure of the fluid, which then flows in the direction of the
arrows.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what
I claim is:-
1. The manufacture and use of cocks and valves having an intermediate seat fitted
with a disc valve consisting of a metal dise guide ping an elastic disc k screw h,
nut m and a ring or cylinder n substantially as herein before described and illustrated
by the drawings.
2. In the construction of cocks and valves the application and use of the ring n
substantially as hereinbeforo described and illustrated by the drawings.

page_text: 3. The general construction, arrangement, and combination of the several and
respective parts, together constituting my invention of improvements in the construction
of cocks and valves substantially as herein before described and illustrated by the
drawings.
GEO. DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.