Improvements in Self Closing Cocks or Valves.
Year: 1891

page_text: Date of Application, 30th Dec., 1891
Complete Specification Left, 26th Sept., 1892-Accepted, 12th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in Self Closing Cocks or Valves.
I, JOHN DAVEY, Queen Street Hitchin Herts, Engineer, do hereby declare the
nature of this invention to be as follows:-
This invention for improvements in bib cocks or valves relates to those of the
self closing type and has for its object to construct a cock in such manner that, the
said cock will automatically close by the pressure of the water or other liquid when
the force which holds the valve open is withdrawn; and consists in forming the
body in two separate pieces beld together by a screwed coupling or union, placed
between these two pieces is a ring of leather or other flexible material which forms
the joint and also the seating for the valve; the valve is of the double wing type
having guides in both pieces of the body. The valve is opened by a cam or lever
which is fixed on the spindle said spindle being placed out of the centre of the body
to bring the cam or lever opposite the centre of the valve, to enable the spindle and
cam to be put in position a plug is screwed into the bottom of the body said plug
also forming a step for the spindle.
In the accompanying sheet of drawings,
Fig. 1. is a horizontal section of a bib cock or valve constructed according to my
invention.
Fig. 2. is a vertical section of the same showing the valve open.
Fig. 3. is an external view of the same.
Fig. 4. is a plan of the valve showing the wings or guides.
Fig. 5. shows a modification of the valve it being made in two pieces with the
disc of leather for forming the valve seating placed between them instead of the
leather seating fixed in the body of the cock.
Fig. 6. shows a valve with spring for closing it.
f
An outer casing consisting of two parts a and b is joined together by the union or
coupling between said parts a disc d of leather or other flexible material is placed
which forms the joint and also the seating for the valve e said valve being a disc
with wings or guides fon both sides, on one end of the valve is a pin y which comes
in contact with a cam or lever & fixed on the spindle i said spindle being held in
position by the screwed plug k, to prevent any leakage around the spindle an india-
rubber washer is put on the spindle.
To open the cock the spindle is turned through a small are the cam then pushes
the valve open, when the force is removed from the spindle the pressure of the water
or other liquid behind the valve causes it to close.
Dated this 26th day of December 1891.
JOHN DAVE1.
COMPLETE SPECIFICATION:
Improvements in Self Closing Cocks or Valves.
JOHN DAVEY Queen Street Hitchin Herts Engineer 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 for improvements in bib cocks or valves relates to those of the
self closing type and has for its object to construct a cock in such a manner that the
said cock will automatically close by the pressure of water or other liquid, when
the force which holds the valve open is withdrawn ; and consists in forming the
body in two separate pieces held together by a screw coupling or union placed
Ti Q77

page_text: between these two pieces is a ring of leather or other flexible material which forms
the joint and also the seating for the valve. The valve is of the double wing type
having guides in both pieces of the body. The valve is opened by a cam or lever
which is fixed on the spindle, the said spindle being placed out of the centre of the
body, to bring the cam or lever opposite the centre of the valve. To enable the
spindle and cam to be put in position a plug is screwed into the bottom of the body
the said plug forming a step for the spindle.
In the drawings sent with the Provisional Specification
Fig. 1 is a horizontal section of a bib cock or valve constructed according to my
invention.
Fig. 2 is a vertical section of the same showing the valve open.
Fig. 3 is an external view of the same.
Fig. 4 is a plan of the valve showing the wings or guides.
Fig. 5. shows a modification of the valve it being made in two parts with a disc
of leather for forming valve seating, placed between them instead of the leather
seating fixed in the body of the cock.
Fig. 6. shows a valve with spring for closing.
An outer casing consisting of two parts a and b is joined together by the union or
coupling c. Between said parts a disc d. of leather or other flexible material is
placed which forms the joint and also the seating for the valve e. Said valve being
a disc with wings or guides . on both sides. On one end of the valve is a pin g.
which comes in contact with a cam or lever . fixed on spindle i. Said spindle being
held in position by the screw plug h. To prevent any leakage past the spindle an
india rubber washer is placed on the spindle.
To open the cock the spindle is turned through a small are the cam then pushes
the valve open.
When the force is removed froin the spindle the pressure of the
water or other liquid behind the valve causes it to close.
Having now described the nature of my invention and the best means with which
I am acquainted for performing the same I wish it to be understood that I do not
limit myself to the details herein set forth as the same may be considerably modified
without departing from the character and construction of my invention and I declare
that I claim
First. A cock or valve made in two parts and held together by a screw coupling
or union with a leather or other flexible washer between to form the joint and also
the seating for the valve.
Secondly. A cock or valve made in two parts and held together by a screw
coupling or union with a leather or other flexible washer between to make the joint,
and a flexible seat to the valve as shown in Fig. 5.
Dated this 24th day of September 1892.
JOHN DAVEI.