An Improved Valve, Specially Applicable to Circulating and Air Pumps.
Year: 1886

page_text: Date of Application, 9th June, 1886.
Complete Left, 9th Mar., 1887.
Complete Accepted, 15th Apr., 1887.
PROVISIONAL SPECIFICATION.
An Improved Valve, Specially Applicable to Circulating and
Air Pumps.
I WILLIAM JAMES DAVY, of the Steam Ship Duke of Buccleuch, of the Royal
Albert Docks, London, Second Engineer do hereby declare the nature of this
invention to be as follows:—
My invention consists of an improved valve which gives a free flow to the water or
fluid in the line of motion of the pump. The valve and its seat are both metallic.
The valve is made with a conical or rounded face and the seat is of corresponding
form. A central stud that the valve works on has a shoulder that holds down the seat
and is itself secured by nuts at top and bottom. On the stud there is above the valve
another shoulder upon which an inverted cup-shaped washer is fitted, this washer
being held in place by the nut above the valve. The neck of the valve enters the
hollow of the cup and as the valve rises the face of the said neck is cushioned by the
air or water in the cup.
Dated this 9th day of June 1886.
J. C. BLEW BURN,
169, Fleet Street, London,
Agent.

page_text: COMPLETE SPECIFICATION.
An Improved Valve, Specially Applicable to Circulating and
Air Pumps.
I WILLIAM JAMES DAVY, of the Steam-ship Duke of Buccleuch, of the Royal
Albert Docks, London, Second 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 :-
My invention consists of an improved valve which gives a free flow to the water
or fluid in the line of motion of the pump. The valve and its seat are both metallic.
The valve is made with a conical or rounded face and the seat is of corresponding
form. A central stud that the valve works on has a shoulder that holds down the seat
and is itself secured by nuts at top and hottom. On the stud there is above the valve
another shoulder upon which an inverted cup shaped washer is fitted, this washer
being held in place by the nut above the valve. The neck of the valve enters the
hollow of the cup and as the valve rises the face of the said neck is cushioned by the
air or water in the cup.
The annexed drawings illustrate my invention. Figure 1 is a vertical section of
the valve with the face of conical form and also of its seat. Figure 2 is a plan one
half representing the seat and the other half the valve. Figure 3 is a vertical section
the same as Figure 1 except that the valve face and the seat are rounded.
a is the
valve and the seat. e is the central stud that the valve works on; d is the shoulder
on the stud that holds down the scat b, and e and are respectively the top and
bottom nuts by which the stud is secured. is the other shoulder herein before
described on the stud c and h is the inverted cup shaped washer fitted thereon, this
washer being held in place by the nut e. The neck of the valve enters the hollow
of the cup and as the valve rises the face of the neck is cushioned by the air or water
in the cup. There is also a recess in the boss of the valve at k which also acts as a
cushion.
Having now 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 conical or round faced valve constructed substantially as hereinbefore described
and represented in the annexed drawings.
Tail in Oil L..
1007
J. C. MEWBURN,
169, Fleet Street, London,
Agent.