Improvements in Screw-taps or Cocks.
Year: 1892

page_text: Date of Application, 9th Mar., 1892
Complete Specification Left, 1st July, 1892-Accepted, 6th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Screw-taps or Cocks.
I, DAVID SWARBRICK, of the Radnor Hotel, Hulme, Manchester, in the County
of Lancaster, Licensed Victualler, do hereby declare the nature of this invention
to be as follows:-
This invention is primarily intended for spirit and wine taps, from which it is
desirable that no drip or loss of material should occur, but it will also be found
applicable for water taps, for wash-hand basins and the like, and is designed with
the object of providing a self closing or automatically closing tap on the screw
principle which cannot be left partially closed by the attendant.
It consists essentially in the application to or combination with the spindle of a
screw tap of a coiled wire or other spring which will be compressed or tightened by
the turning of the tap to open it and which will when the tap is released rotate the
spindle and thus close it.
In carrying out the invention, to the screw spindle of the tap attach one end
of a coiled wire spring the other end of the spring being attached to the body or
non-moving part of the tap. A chamber above the screw chamber is provided to
carry a spring preferably in the form of a coiled wire spring (though it may be in
the form of a volute or similar spring). This spring is attached to both the screw
spindle and the tap so as to cause the spindle to turn in the direction to close the
valve.
The foot of the spindle or valve thereon is loose or formed with a swivel so that
the spindle can turn independently of it, and it is preferably packed with rubber to
form a close seating for the valve.
By this arrangement of tap I consider less waste will occur as it cannot be left
open to run or drop, and the spring will cause the valve always to be shut close
down upon its seating.
Dated this 8th day of March 1892.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, l'atent Agents.
COMPLETE SPECIFICATION.
Improvements in Screw-taps or Cocks.
1, DAVID SWARBRICK, of the Radnor Hotel, Hulme, Manchester, in the County
of Lancaster, Licensed Victualler, 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 :-
This invention is primarily intended for spirit and wine taps, from which it is
desirable that no drip or loss of material should occur, but it will also be found
applicable for water taps, for wash-hand basins and the like, and is designed with
the object of providing a self closing or automatically closing tap on the screw
principle which cannot be left open or only partially closed by the attendant.
It consists essentially in the application to or combination with the spindle of a
screw tap of a coiled wire or other spring which will be compressed or tightened
by the turning of the tap to open it and which will when the tap is released rotate
the spindle and thus close it.
It will be fully described with reference to the accompanying drawings:-
Fig. 1, elevation partly in section of tap constructed according to my invention.
Fig. 2, detailed elevation of part of the tap.

page_text: Fig. 3, sectional plan on line a-—y, Fig. 2.
Fig. 4, clevation partly in section of another form of tap with my invention
applied thereto.
To the spindle A of the tap B is attached a coiled wire spring C. One end of
the spring is attached to the spindle A and the other end to the body or non-
movable part of the tap or it may be made to rest upon the washer a at one end
and against the gland at the other the downward pressure of the spring C
causing the spindle A to be turned and carried back to its seat.
The spring C is placed in a chamber in the tap formed by the bush D and the
screw is made by means of an inclined groove or slot d in the side of the bush in
which a pin works as shown in Figs. 1 and 2. The turning of the spindle A
forces the pin up the groove d and raises the valve E from its seat.
Instead of the grooved and pin d' a full threaded screw F may be made on the
spindle as shown in Fig. 4.
The turning of the spindle A raises the valve E from its scat and at the same
time compresses or tightens the spring C so that when the spindle is released or
partially returned to its seat by the attendant the action of the spring turns it
further round until the valve is completely closed.
The valve E on the foot of the spindle A is preferably loose or formed with a
swivel as shown so that the spindle A turns independently of it and it is preferably
packed with rubber to form a durable and flexible scat for the valve.
By this arrangement of tap I consider less waste will occur as it cannot be left
open to run or drop and the spring will cause the valve always to be shut close
down upon its seating.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what I
claim is -
1. The combination with the spindle of a screw tap, of a spring by which, when
the tap is open, the spindle is turned and the valve caused to return to its seat
substantially as described.
2. A screw tap or cock, which when open is closed by means of a spring, con-
structed and arranged substantially as described and shown with reference either to
Figs. 1 to 3 or to Fig. 4.
Dated this 18th day of June 1892
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and Loudon, Patent Agents.