Improvements in Plug Taps or Valves.
Year: 1892

page_text: Date of Application, 14th Sept., 1892
Complete Specification Left, 13th June, 1893-Accepted, 15th July, 1893
. PROVISIONAL SPECIFICATION.
Improvements in Plug Taps or Valves.
We, DAVID HORSBURGH of 12 Peabody Street, Engineer, and ROBERT WOOD
of 115 Westbrook Street, Engineer, both of Bolton in the County of Lancaster, do
hereby declare the nature of our said invention to be as follows:-
This invention relates to improvements in plug taps or valves for steam, gas,
water and other liquids and is designed to dispense with stuffing-box, gland, and
packing. This is accomplished by providing the upper end of plug with a recess in
which is loosely mounted a stem with a square or flat end.
This stem passes
through the cap or cover, and is provided with a valve or facing operating in
The valve or
conjunction with a valve seating on the underside of cap or cover.
facing on the plug stem is held against the valve seat by a spring disposed between
the upper end of plug and the underside of valve, by which a perfectly tight
joint is made. The upper end of stem outside the cap or cover is provided with a
square or other means for operating the same.
Dated the 13th September 1892.
EDMUND CHADWICK,
Agent.
COMPLETE SPECIFICATION.
Improvements in Plug Taps or Valves.
We, DAVID HORSBURGH of 12 Peabody Street, Engineer, and ROBERT WOOD
of 115 Westbrook Street, Engineer, both of Bolton in the County of Lancaster, do
hereby declare the nature of our said invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to improvements in plug taps or valves for steam, gas,
water and other liquids and is designed to dispense with stuffing-box, gland, and
packing. This is accomplished by providing the upper end of plug with a recess
in which is loosely mounted a stem with a square or flat end. This stem passes
through the cap or cover, and is provided with a valve or facing operating in
conjunction with a valve seating on the underside of cap or cover. The valve or
facing on the plug stem is held against the valve seat by a spring disposed between
the upper end of plug and the underside of valve, by which a perfectly tight joint
is made. The upper end of stem outside the cap or cover is provided with a square
or other means for operating the same.
Fig. 1 is a sectional elevation of a plug tap or valve on our improved principle.
Fig. 2 is a plan, and
Fig. 3 is a sectional plan through line A B in Fig. 1.
C is the body or casing of the tap or valve; D the plug, and E the cap or cover.
The upper end of the plug D is provided with the recess F in which is loosely
mounted the stem G with the square or flat end H. The stem G passes through
the cap or cover E, and is provided with the valve or facing I operating with the
valve seating K on the underside of the cap or cover E. The valve or facing I on
the stem G is held against the valve seat K by the spiral spring L disposed between
the upper end of the plug D and the underside of the valve I, by which a perfectly
tight joint is made after the valve and seating have been ground together in the
usual manner. The upper end of the stem G outside the cap or cover E is provided
with the square M to allow of the plug D being operated by a box-key, screw-key,
CD

page_text: or other handle. If desired the square M may be fitted with a hand wheel or its
equivalent permanently fixed or otherwise.
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 :-
:-
In combination with the body or casing C, plug D, and the cap or cover E, the
use of the stem G loosely mounted in the recess F in the plug D and having the
valve or facing I operating with the valve seating K, the valve or facing I being
held against the valve seating K by the spring L, substantially as described and for
the purpose specified.
Dated the 7th June 1893.
EDMUND CHADWICK, F.I.C.P.A.,
Agent.