An Improved High Pressure Water-cock with Signal.
Year: 1894

page_text: Date of Application, 22nd Sept., 1894-Accepted, 17th Nov., 1894
COMPLETE SPECIFICATION.
An Improved High Pressure Water-cock with Signal.
1, CARL SCHMIDT, of 51 Great Schneitniger Street, Breslau, Brass-founder,
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 :—
By the closing of the high-pressure taps of water pipes and through the back
flow of the water, an air space is formed and the pipes have therefore to bear the
pressure of the atmosphere. As usually the tap is not quite tightly closed, the air
forces its way into the pipes and when the tap is turned on, the air driven out
before the water is compressed so violently that bursting of the pipes often occurs.
Moreover the taps in present use are so imperfect that continual repairing is
necessary.
This invention consists of a tap which overcomes all difficulties arising from
imperfect taps.
The accompanying drawing represents the said tap in section.
The tap may be fixed to the wall by means of the plate a, which has three or
more holes b.
The water flows through the pipe e towards the back of the tap at e. The
tap is of the shape shown and serves to shut off or on the water flow by means of
the india-rubber ball r. A cylindrical tubes, is provided, with guides s¹, which
slide in the guiding grooves n.
The upper part of the cylinders is fitted with
the screw ¹, connected to the spindle, which engages with a female screw
thread in s.
The spindle v, is provided with packing as is also the tube a³, behind
the tap at a', a². By means of the cap m, and set screw f, the packing can be
adjusted and secured. To effect a better closing, rings g, are introduced and are
tightened by screwing down the cap m² thus forming a metallic stuffing around the
spindle v.
When the hand wheel, and spindle, e, and thread v', are rotated, the tube s,.
being kept from rotating, the ball r and tube s, are raised and the water can flow
through the nose-pipe. If the hand wheel is rotated in the opposite direction
the ball r is pressed down firm in its place and the flow of water is stopped.
To effect the escape of air which has collected in the pipe, an outlet A, is
provided between the pipe d, and tap e, and on which is fixed an attachınent B..
The top of B, is of hemi-spherical interior and has small grooves forming
openings o, which are connected with pipe a³; and in the said bemi-spherical part
is an india-rubber ball R, and the part D is also screwed in same, having a
socket wo for the ball R and a small vent chamber E.
When the tap is opened the air collected in the pipe is forced out through the
grooves o and up through the vent chamber E which causes a whistling sound so
that the operator is warned.
Then the flow of water following the air forces the ball R against the socket w
and prevents any further outflow.
The tube a³ can be dispensed with and the tap screwed direct to d.
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 :-
1. A water tap or stop-cock provided with a tube s, holding down the stop.
ball the guides s'. hand wheel h. spindle » thread » the turning of which causes

page_text: the tubes and ball to be raised or lowered as required the spindle being packed
and held by caps m, and m³, as herein described & set forth.
2. The combination with the water cock explained in Claim 1. of the air vent A,
with its connecting piece B, ball R, grooves o and vent chamber E, the said
ball R being forced by an escape of water against the seat w, and so closing the air
vent, as herein described and set forth.
ה..וני ב
1001
S. 'S. BROMHEAD,
97, Newgate Street, London, Agent for Applicant.