IMPROVEMENTS IN THE CONSTRUCTION OF HIGH PRESSURE TAPS
Year: 1884

page_text: I, THOMAS OSBORNE of Hexthorpe Brass Works Doncaster in the county of
York Manufacturer do hereby declare the nature of my said invention for
IMPROVEMENTS IN THE CONSTRUCTION OF HIGH PRESSURE TAPS to be as follows:―
My invention relates to improvements in the construction of high pressure taps
the object being to construct a tap that shall be selfclosing without concussion, and
that shall not leak in the working parts.
In carrying out my invention in the construction of an ordinary water tap (for
example) I make the body of the tap tubular shaped, and enclosed in a tubular
casing attached to the nozzil part by means of a screw thread.
In front of the nozzil is a projection through which a piston rod works; which
is pushed inwards by means of its button shaped head, when water is required, the
action of a spring forcing it back to its original position.
To prevent the escape of water round the piston rod, I form one or more grooves
round its periphery, round which I wrap suitable packing, or an elastic ring may
be contracted in the groove, so as to fit the tubular bearing through which the
piston rod works.
The body or cylinder which is enclosed by the tubular casing, communicates
with the water space, or interior of the casing by ports at the end nearest the
nozzle of the tap.
A short piston provided with circular, spiral or longitudinal grooves for the
passage of water fits loosely in the body or cylinder and is connected to the end of
the piston rod by means of a screw, the head of which acts as a valve, a small
amount of movement being left between the valve and the end of the piston rod
so that the valve can open and close-The front of the piston closes the principal
water way between the ports and the nozzle and the periphery of the piston closes
the ports with the exception that the small grooves before mentioned in com-
bination with the loose fit of the piston allow water to find its way to the back
of the cylinder from the ports. Thus when at rest the cylinder fills with water
pressing the piston upon its seat, as well as the small valve upon its sent.
A spiral spring also presses the small valve and the piston in the same direction.
When the piston rod is pressed inwards, its first action is to open the small
valve, and allow the water in the end of the cylinder, at the back of the piston to

page_text: escape through the valve rod hole; the continued movement forces back the piston
into the cylinder and opens the ports, allowing the water to flow direct to the
nozzle.
When the piston rod is released, the action of the compressed spiral spring would
at once force the piston back into its original position and close the water way,
but this can only be done slowley, and in the same time that is occupied by the
water finding its way into the cylinder down or straight spiral or other grooves
formed round or upon the piston.

page_text: I THOMAS OSBORNE of Hoxthorpe Brass Works Doncaster in the County of
York Manufacturer do hereby declare the nature of my invention for IMPROVE-
MENTS IN THE CONSTRUCTION OF HIGH PRESSURE TAPS and in what manner the
samo is to be performed, to be particularly describod and ascertained in and by the
following statement, that is to say :-
My invention relates to improvements in the construction of high pressuro taps,
the object being to construct a tap that shall be self closing without concussion
and that shall not leak in the working parts.
In carrying out my invention as applied to the construction of a high pressuro
tap for lavatories or baths for example, and which is illustrated in the annexed
shoot of drawings in which the same letters of reference indicate the same parts,
Fig. 1, being a sectional view of a tap closed Fig. 2, the same open. Fig. 3, an
clovation of the same tap, and Fig. 4, a variation in shape only.
I make the body A of a tubular shape, and enclose it in a corresponding tubular
casing B, attached to the nozzle part C by means of a screw thread.
Above the nozzle in a direct line with the body A, is a projecting part D, through
which a piston rod E works, and which is operated either by a direct pressure
upon a button shaped head, or by means of a lever F, as shown, the action of tho
spring G forces it back to its original position.
To prevent the escape of water round the piston rod, I form one or more grooves
round its periphery as at H, in which I place an indiarubber ring, or other suitable
packing.
The body A which is enclosed, by the tubular casing B, communicates with the
water space or interior of the casing I by means of the ports J, at the end nearest
the nozzle of the tap.
A short piston K provided with spiral or longitudinal grooves on the outside for
the passage of water fits loosely in the body A, and is connected to the piston rod E
by a screw L, the head of which acts as a valve; the screw being of sufficient
length to allow an opening and closing motion.
The front of the piston closes the principal waterway between the ports and tho
nozzle, and the periphery of the piston closes the parts J, with the exception that
the small grooves before mentioned, in combination with the loose fitting of the
position allow water to find its way to the back of the body from the said ports.
Thus when the tap is at rest the cylinder or body fills with water which
presses the piston K, as well as the valve upon the screw L, down to their respective
seatings M and N. The spiral spring G also presses the small valve and the piston
in the same direction.
When the piston rod E is pressed down, its first action is to open the small
valve and allow the water in the end of the end of the body, at the back of the
piston to escape through the valve rod hole; the the continued movement forces
back the piston into the body and opens the ports, allowing the water to flow direct
to the nozzle,

page_text: When the piston rod is released the action of the compressed spiral spring would
at once force the piston back to its original position and close the water way, but
this can only be done slowly and in the same time that is occupied by the water
finding its way into the body or cylinder down the spiral or longitudinal grooves
formed on the periphery of the piston, and thus preventing any shock upon the 5
pipes.
Having thus particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
The improved construction of high pressuro taps.for the purpose specified, and 1
substantially as hereinbefore described and as illustrated.