Improvements in Tap-hole Valves.
Year: 1893

page_text: Date of Application, 17th July, 1893
Complete Specification Left, 17th Apr., 1894-Accepted, 2nd June, 1894
Improvements in Tap-hole Valves.
EDWYN JOHN BARKER Glass Merchant of 162 Sloane Street Chelsea in the
County of Middlesex do hereby declare the nature of this invention to be as
follows:-
A boss or ferrule of suitable size & shape with enlarged disc cast in same which
is cut & turned to fit a seating at rear of a screw thread made in mouth of boss or
ferrule the disc being fitted to a screwed nipple working in thread at mouth
which in its turn is actuated by any cock valve or other fitting slotted to engage
with same. The action of screwing in cock valve &c. driving nipple & disc back
thereby opening way for passage of fluids & withdrawing same bringing nipple &
disc forward on to seating closing the passage.
000
COMPLETE SPECIFICATION.
Improvements in Tap-hole Valves.
I, EDWYN JOHN BARKER, Glass Merchant of 162 Sloane Street, Chelsea, in
the County of Middlesex, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
The device according to my invention is illustrated by the accompanying sheet
of drawings in which
Figure 1 shews a sectional elevational view of the device when the passage way is
closed and
Figure 2 represents a sectional elevational view of same when passage way
is open.
Like letters of reference indicate corresponding parts throughout the views.
In accordance with my invention I employ a boss or ferrule a of suitable size
and shape with disc 6 cast in same, which is cut and turned to fit seating cat rear
of a screw thread d¹ cut in mouth or attachment end d of boss or ferrule a.
The above referred to disc b is secured to the externally screw threaded member
or nipple e by means of a small bolt or equivalent means e¹. Said member e works
up and down, the inside of the attachment end d of the boss a and is actuated by
the cock, valve or other delivery fitting, slotted at the shank to receive the lugs f,
one formed on each side at the mouth of the member e. The action of the
screwing in the cock, valve or the like, drives the member e and disc b back,
thereby opening way for the passage of the fluids, as shewn Figure 2, which pass
through the slot or opening g formed in member e; and, on withdrawing the cock,
valve or the like, the member e and disc 6 are brought forward on to seating cas
shewn Figure 1, whereupon the passage way becomes closed. Lugsh are provided to
ensure free water way; and, at same time prevent nipple e being screwed too
far back.
It forms an essential feature in my invention that from the system of construction
which I adopt in accordance with my present improvements, that any tap or valve
can be taken off, when required for repairs or otherwise, from the boss or ferrule
aforesaid, without necessitating shutting off the water or other fluid from either
Do31

page_text: main, cistern, boiler &c.
The device aforesaid is simple in construction, certain
and automatic in its action and cannot possibly get out of order.
The shell of the boss or ferrule a may either, be one piece or casting, or otherwise
the shell might be in two pieces brazed together after the disc b has been fitted inside
of same.
I might also under my invention construct the nipple member e and stem or
shanke in one piece, the end of latter to receive a screwed nut taking on to b, or
rivetted, over on to the latter.
As an attachment also to fire hydrants, my present device will be found of great
advantage, the action of screwing in the stand pipe serves to open the water way
similarly as when a cock or valve is employed.
Again, I do not confine myself to the particular shape of the boss or ferrule a,
as this, instead of as shewn, might assume a rectangular, hexagonal octagonal or
other polygonal formation. The device may be made of any suitable metal and
the tail piece i be either straight, elbowed, bent or otherwise, to suit the
requirements. The seating being either rubber, leather, soft metal or a ground-in
seating.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
For tap hole valves the improved bos: or ferrule attachment substantially as
herein set forth and shewn.
uay др 1074.
JAMES STEVENSON,
1, Furnival Street, Holborn, E.C., Agent for Applicant.