A Combined Cock and Check Valve Box.
Year: 1892

page_text: Date of Application, 1st Dec., 1892
Complete Specification Left, 1st Sept., 1893-Accepted, 21st.Oct., 1893
PROVISIONAL SPECIFICATION.
A Combined Cock and Check Valve Box.
We, THOMAS EVANS, Engineer of No. 32 Upper North Street, and also of
No. 224 Burdett Road, Poplar, London E. and GEORGE BARKER, Engineer of
No. 74 Pekin Street, Poplar, London E. do hereby declare the nature of this
invention to be as follows:-
That by its means, being most especially adapted to a steam boiler, either land or
marine, the internal part D can be most readily examined & this when the boiler
has the maximum quantity of water, & the full pressure of steam is maintained
therein, by closing the plug A by means of the handle B. which closes the ports E,
the cover can then be removed & the valve taken out & overhauled, or any defect
in it made good, when valve & cover can be again refitted. This is an important
consideration, both in the saving of time, & the expense otherwise necessary in
freeing the boiler from steam, & blowing out the water, which in ordinary cases
requires to be done to enable any examination to be made of the ordinary valves
which are now mostly fitted. This invention is therefore designed to avoid this.
Dated this 30th day of November 1892.
THOMAS EVANS.
GEORGE BARKER.
COMPLETE SPECIFICATION.
A Combined Cock and Check Valve Box.
We, THOMAS EVANS and GEORGE BARKER, of 32 North Street, Poplar, in the
County of Essex, Engineers, 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 :-
Our invention consists in improvements in valves whereby the valve can be
examined or the seating and cover can be more readily replaced by new ones
whilst the engine and boilers are working.
The construction of our improved valve is as follows:-Within the conical valve
casing I fit a hollow conical casing or plug, in which are two openings so arranged
that they correspond with the openings to the inlet and also the outlet pipe
respectively. Approximately midway between the two openings in the plug a
small seating is formed upon which the valve cover rests. Above the valve cover
is placed the hand screw for the purpose of forcing the cover down on to its seating.
To the lower end of the conical plug is fixed a tap handle secured by means of a
When it is required that the cover be renewed or the interior of the valve be
inspected the tap handle is given a quarter turn causing communication with the
inlet and outlet pipes to be cut off. The valve is now safe to be inspected. The
cover to the valve casing is unscrewed and the seating or valve cover is free to be
taken out.
nut.
We will now describe our invention with reference to the drawing:-
Figure 1 illustrates a section of our improved valve, on the left hand side of which
is the outlet pipe a and on the right the inlet pipe b, c is the valve casing in which is
fitted a hollow plug d with two apertures e and f corresponding respectively with
the inlet pipe a and outlet pipe b, g is the seating formed on the plug d on which the
valve cover is placed, k is the hand screw above the cover h, and is the cover to
the valve casing c, m is the tap handle fixed to the lower portion of the plug d,
secured by the nut n.

page_text: The openings e and fare, by means of giving the handle m a quarter turn,
disconnected from the two pipes a and b; the cover of the valve casing c is now
unscrewed bringing away with it the hand screw k, by this means the valve is free
for renewing the valve seating or cover, or simply for inspection only.
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 : :-
1. In the construction of valves, arrangements whereby both inlet and outlet pipes
may be closed, substantially as described for the purposes herein set forth and as
illustrated in the drawing annexed.
2. In the construction of valves, the combination of the hollow plug d with two
apertures e and together with the tap handle m, all substantially as described and
for the purposes herein set forth.
3. In the construction of valves, the combination of the hollow plug d provided
with apertures e and f, the tap handle m, the nut n, the cover h and the hand screw k,
all substantially as described, for the purposes specified and as illustrated in the
drawing annexed.
JOHN P. O'DONNELL,
70 & 71, Palace Chambers, Bridge Street, Westminster, London, S. W.,
Agent for said Applicants.