Improvements in High Pressure Bib Cocks.
Year: 1896

page_text: Date of Application, 24th Feb., 1896
Complete Specification Left, 3rd July, 1896-Accepted. 15th Aug.. 1896
PROVISIONAL SPECIFICATION.
Improvements in High Pressure Bib Cocks.
I, WILLIAM SCRIVEN of 4 Scotland Street, Brighton in the County of Sussex,
Plumber, do hereby declare the nature of this invention to be as follows:-
My invention relates to high pressure bib cocks and has for its objects an
improved form of cock by which the use of the stuffing box is obviated and also
more satisfactory method of shutting off the water supply by which it is
impossible for any water to leak through the outlet.
To attain these objects I make use of an ordinary casing or body similar to that
used in the present form of bib cock, and inside this casing and communicating.
with the inlet pipe is a smaller pipe which is continued to a distance just above the
upper end of the outlet pipe or nozzle. On the inside of the casing I have cast a
projecting ring or seating which is slightly higher than the mouth of the inner
pipe. Upon this seating rests a flat circular washer of india rubber or other
suitable material (which is made to fit tightly in the casing) on the top of which is
a thin disc of brass or other metal.
To the top of the body or casing is secured by means of a screw thread or
soldering a suitable cap or cover, through the centre of which is passed a valve rod
being also provided with a screw thread, a female thread being made in the cap or
cover so as to get the necessary pressure to shut off the supply of water.
The valve rod is also provided at one end with a thumb and finger piece and at
the other and inside the cap is a slight enlargement of the valve rod preventing it
leaving the cap when turning on the water.
In working my invention when it is required to turn off the supply of water the
valve rod is screwed down by means of the thumb and finger piece until it presses
tightly upon the metal dise; this causes the rubber washer resting on the seating
to assume on the underside a convex shape and presses on the mouth of the inner
pipe effectually shutting off the water; this can be again turned on by unscrewing
the valve rod when the washer assumes its normal position and allows a free and
uninterrupted supply of water to flow from the inner pipe.
It will be understood that as the rubber washer its tightly in the casing it is
impossible for any water to escape between the valve rod and cover thus obviating
the necessity for using a stuffing box.
Dated this 22nd day of February 1896.
WILLIAM SCRIVEN,
Applicant.
COMPLETE SPECIFICATION.
Improvements in High Pressure Bib Cocks.
I, WILLIAM SCRIVEN of No. 4 Scotland Street, Brighton in the County of
Sussex, Plumber 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:-
My invention relates particularly to high pressure bib cocks and consists of an
improved form of cock obviating the use of a stuffing box and a perfect method of

page_text: shutting off the water supply by which it is impossible for any to leak through the
outlet.
In order that my invention may be more readily understood reference is made
to the accompanying drawings forming part of my specification, and in which,
Fig. 1. shows a view of an ordinary shaped bib cock.
Fig. 2 is a longitudinal section of the same shewing my improvements.
Fig. 3. is an improved form of cock to which my invention is particularly
applicable and
Fig. 4 is a longitudinal section of the same.
The same letters of reference apply in all the figures.
To attain the objects of my invention I make use of an ordinary casing or
body 'a' which may be similar in shape to that at present used or preferably that
given in Figs. 3 and 4, inside this casing is a pipe 'b' which is continued to a
distance just above the upper end of the outlet pipe or nozzle 'c.' On the inside
of the casing 'a' I have cast a projecting ring or seating 'd' which is slightly
higher than the mouth of the inner pipe 6. Upon the seating is placed a thick
flat circular washer 'e' of india rubber or other suitable material made to fit
tightly in the casing and on this is placed a thin disc of brass or other metal 'f.'
To the top of the body or casing 'a' is secured by means of a screw thread or
soldering a suitable cap or cover 'g' through the centre of which is passed a
spindle provided with a screw thread and shoulder to prevent the spindle being
screwed in too far; a female thread is made in the cap or cover 'g' so as to get
the necessary pressure to shut off the supply of water. The spindle is provided at
one end with a thumb and finger piece and at the other and inside the cap 'g'
is a slight enlargement 'm' of the spindle " so as to prevent it leaving the
cap 'g' when turning on the water.
In working my invention when it is required to turn off the supply of water the
spindle is screwed down by means of the thumb and finger piece 'k' until it
presses tightly upon the metal disc 'f" causing the rubber washer 'e' resting on the
seating 'd' to assume on the underside a convex shape (as shewn in the drawings
by full lines) and presses on the mouth of the inner pipe '6' effectually shutting
off the water, this can again be turned on by unscrewing the spindle when the
rubber washer 'e' assumes its natural position (shewn by dotted lines) and allows
a free and uninterrupted supply of water to flow from the inner pipe 'b.'
It will be observed that as the rubber washer fits tightly in the casing it is
impossible for any water to escape between the spindle and cover thus obviating
the necessity for using a stuffing box.
It will also be noticed that in Figs. 3 and 4 the position of the spindle, thumb
and finger piece, rubber washer, metal disc and seating is different to that shewn
in Figs. 1 and 2, the various parts mentioned being placed in from the side instead
of the top. This in no way interferes with the usefulness or effectiveness of my
invention.
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
In the construction of high pressure bib cocks the combination of an inner pipe,
seating, rubber washer and metal disc for the purposes described in the specification
and illustrated in the accompanying drawings.
Dated this 1st day of July 1896.
WILLIAM SCRIVEN,
Applicant.