An Improved Valve or Draw off Tap.
Year: 1888

page_text: Date of Application, 8th Nov., 1888
Complete Specification Left, 8th Aug., 1889-Accepted, 21st Sept., 1889
PROVISIONAL SPECIFICATION
An Improved Valve or Draw off Tap.
EDWYN JOHN BARKER Lead, Glass, Oil, & Color Merchant of 162 Sloane Street
Chelsea in the County of Middlesex do hereby declare the nature of this invention to
be as follows:-
My Invention is devised mainly with a view to render unnecessary, in the case of
taps valves or cocks, the use of a stuffing box, as also to dispense with the necessity
for shutting off the water or other fluid from either main or cistern during the carry-
ing out of necessary repairs.
In accordance with my Invention, I employ an inverted hollow plug which may
be screwed up or caused to slide up to, the under face of valve seating through the
outlet of said tap cock or valve, thereby shutting off the supply; and, vice versa.
In place of the stuffing box usually employed in taps cocks or valves I introduce
a screwed plug through the shell of the duct, which plug may be screwed down on to
upper side or face of valve seating and so shutting off the passage of fluid through
the outlet and allowing of the removal, when required, for. repairs, of the inverted
hollow plug above referred to.
1000
COMPLETE SPECIFICATION.
An Improved Valve or Draw off Tap.
I EDWYN JOHN BARKER of 162 Sloane Street, S.W. Lead and Colour Merchant,
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:
My invention is devised mainly with a view to render unnecessary, in the case of
taps, valves, or cocks, the use of a stuffing-box, as also to dispense with the necessity
for shutting off the water or other fluid from either main or cistern during the
carrying out of necessary repairs.
And in order that my invention may be thoroughly understood I have appended
the accompanying sheet of drawings.
In these figures similar letters of reference indicate corresponding parts.
Figure 1. is a sectional elevation of my improved tap, cock or valve the same
being closed.
Figure 2. is a sectional elevation of a modified form of the tap, cock or valve the
handle of the same having had a quarter of a turn imparted thereto.
Figure 3. is a plan of the screwed plug shown in Figure 1.
In accordance with my invention I employ, as shown in Figure 1, an inverted
hollow plug A provided with screw-threads to engage with corresponding screw-
threads in the outlet B of the tap or cock. This hollow plug A is screwed up or
caused to slide up to the under face a of a valve seating C through the outlet B of
said tap or cock, thereby shutting off the supply and vice versa. The hollow plug A
does not itself bear on the face a of the valve seating but is provided with a valve D
and spindle c preferably screwed into a bridge piece E forming part of the said hollow
plug, which bridge piece is of such a size as to allow of a free passage on either side
of the fluid through the hollow plug to the outlet, as will be more clearly seen by
reference to Figure 3. The handle is shown in dotted lines in Figure 1.
In the modification shown in Figure 2 the enlarged boss F of the handle G instead
of forming a hollow plug and screwing into the interior of the outlet (as in Figure 1.)
D

page_text: is provided with screw-threads to engage with corresponding screw-threads on the
exterior of said outlet, the arrangement of valve D spindle c and bridge piece E being
similar to that shown in Figures 1 and 3. I prefer to cut the screw-threads of the
hollow plug A and also the screw-threads in the enlarged boss F of the handle G
with a "rapid" or "quick" pitch in order that upon a half turn being imparted to
the handle of the tap or valve a full passage is opened for the flow of the fluid or
vice versa.
In place of the stuffing box usually employed in taps, cocks or valves, I introduce
a screwed plug H Figures 1 and 2, which passes through and engages with cor-
responding screw-threads formed in the shell of the duct. This screwed plug is
screwed down on to the upper face of the valve seating, so shutting the passage of
the fluid through the outlet B, and allowing of the removal when required for repairs
of the hollow plug A. The screwed plug H may be provided if desired with a
screwed cap
I to cover its outer end; the outlet also may be arranged horizontally
instead of vertically as shown.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
The improved tap, cock or valve consisting of a valve screwed up or slid up to the
under face of a valve seating, in the said tap, cock or valve, by the partial rotation
of a handle thereby closing the tap, cock or valve, or vice versa; 'and an auxiliary
screwed plug to be screwed down on to the upper face of the valve seating so as to
cut off the supply of fluid from the main or cistern when required.
Dated tins ord day of August
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C., Agent for Applicant.