Improvements in Taps or Cocks, Especially Adapted for the Delivery of Fluids under Pressure.
Year: 1887

page_text: Date of Application, 23rd Aug., 1887
Complete Left, 23rd May, 1888
Complete Accepted, 29th June, 1883
Improvements in Taps or Cocks, Especially Adapted for the Delivery
of Fluids under Pressure.
I, CHARLES KASEFANG of 108 Saint Martins Lane, W. in the County of Middlesex,
Hardware Merchant do hereby declare the nature of this invention to be as
follows
The object of my Invention is to simplify the construction of taps or cocks for water
or other fluids in such a manner as to dispense with a gland or stuffing box and
packing without risk of leakage, even when subjected to very high pressure.
In order that my Invention may be the better understood I have appended the
accompanying sheet of drawings, in which-Fig. 1 represents an elevation of a cock
or tap constructed according to my Invention and Fig. 2 is a sectional elevation of the
same.
In accordance with my Invention, I form within the body A. A. of the cock or tap,
and preferably cast upon it, a bridge B, having formed upon it a suitable seating a.
either flat, conical or annular, for the valve b. which is attached to the screwed spindle c.
so that it may be pressed upon or withdrawn from the seating at will by means of the
handle D. A cap or bonnet c. is fitted to the body A of the cock or tap by
screwing or other equivalent method and is bored to allow the spindle revolving freely
therein.
A small channel or port d is cast or cut through the metal wall of the body A. so as
to afford free communication for water or other fluid that may be above the valve b.
to pass to the outlet E. In the case of cocks or taps as ordinarily constructed, con-
siderable leakage would take place from the bore of the cap or bonnet B by reason of
the pressure of water or other fluid above the valve; according to my Invention however
all pressure is removed and a partial vacuum formed in the space above the valve b.
when the latter is raised, for, by a well known hydrostatic law, the velocity of the
descending fluid passing the orifice of the channel or port d in the outlet E, causes said
passage or port to act as an ejector, and thus remove all pressure from the upper
portion of the body of the tap or cock and cap or bonnet, and so prevent leakage without
the employment of any packing or similar device.

page_text: The device or contrivance according to my Invention is not only applicable to screw
cocks or taps, but also to push or lever taps as shown by Fig. 3, when the valve is
retained in its seat by the tension of a spiral spring E., and raised to give emission to
the water or other fluid by means of the lever D., the port or channel d operating in
the manner and for the purpose above described.
In both cases I may further secure the prevention of leakage around the spindle by
forming the lower surface of the cap or bonnet B, in such a manner as to form a seating
for the upper surface of the valve when the latter is raised to the full extent of its lift.
Dated this 20th day of August 1887.
JAMES STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.

page_text: of Fluids under Pressure.
I, CHARLES KASEFANG of 108 Saint Martin's Lane, W., in the County of Middlesex,
Hardware 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, reference being also had to the drawings filed with my
Provisional Specification:-
The object of my invention is to simplify the construction of taps or cocks for water
or other fluids in such a manner as to dispense with a gland or stuffing box
and packing without risk of leakage even when subjected to very high pressure.
In accordance with my invention I form within the body A of the cock or tap, and
preferably cast thereupon, a bridge B having a suitable seating a, either flat, conical
or annular for the valve 6 which latter is attached to or forms part of the screwed
spindle c, so that it may be pressed upon or withdrawn from the seating a by means of
the handle D. A cap or bonnet C is fitted to the body A of the cock or tap by screwing
or equivalent means, and is bored for the reception of the spindle c, and to allow of its
revolving freely therein. A small channel or port d is cast in or cut through the metal
wall of the body A so as to afford free egress to the outlet E for the water or other
fluid which may accumulate above the valve b.
In the case of cocks or taps as ordinarily constructed, considerable leakage would
take place from the bore of the cap or bonnet C by reason of the pressure of water or
other fluid above the valve; according to my invention however, all pressure is
removed, and a partial vacuum formed in the space above the valve when the latter
is raised, for, by a well known hydrostatic law, the velocity of the descending fluid
passing the orifice of the channel or port d in the outlet E, causes said channel or port
to act as an ejector, and thus removes all pressure from the upper portion of the body
of the tap or cock, and cap or bonnet, and so prevents leakage without the employment
of any packing or like appliance.
The device according to my invention is not only applicable to screw cocks or taps,
but also to push or lever taps as shown at Fig. 3, in which the valve is retained in its
seat by the tension of a spiral spring and raised to allow of the flow of the water or
other fluid by means of the lever D, the channel or port d operating in the manner
and for the purpose above described. I may further secure the prevention of leakage
around the spindle by forming the lower surface of the cap or bonnet C in such a
manner as to serve as a seating for the upper surface of the valve 6 when the latter is
raised to the full extent of its lift.

page_text: 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
First: In taps or cocks for the delivery of fluids under pressure the employment
therein of a bridge B having a suitable seating a substantially as and for the purposes
hercin set forth.
Second-In taps or cocks such as referred to in the preceding claim the formation
in the wall of the body thereof of a channel or port a substantially as and for the
purposes herein set forth.
JAMES STEVENSON,
Gray's Inn Chambers,
20, High Holborn, W.C.,
Agent for Applicant.