Improvements in and connected with the Spindles of Sluice Valves.
Year: 1895

page_text: Date of Application, 22nd June, 1895-Accepted, 10th Aug., 1895
COMPLETE SPECIFICATION.
Improvements in and connected with the Spindles of Sluice Valves.
I, ALBERT FREDERICK WOOLHOUSE of 76 Regent Terrace, Masborough, near
Rotherham, in the County of York, Draughtsman, 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 to the spindles of sluice valves and has for its object to
provide means whereby the packing for the spindle can be removed and replaced
while the valve is open and pressure of fluid is in the body or case of the
valve without permitting the water to escape.
I will describe my invention with reference to the accompanying drawing which
represents in section so much of a sluice valve as is necessary to illustrate my
invention.
A is the upper part of the valve body or case, F the valve and E the
valve spindle. On the spindle E there is provided according to my invention a
collar D having two conical surfaces d d the lower conical surface d fitting in
an internally coned bush C of anti-friction metal contained in a recess formed
in the cover B bolted to the valve body or case A.
In the cover B, so as to be situated between the upper conical surface d² and
the lower conical surface d, when the cover is fixed in position, is a recess b,
for the reception of a cup leather or hydraulic packing G which is retained in
position by a gland H bolted to and constituting part of the cover B. The
gland H has a recess therein containing an internally coned bush J fitting the
upper conical bearing surface d² on the collar D. The conical bearing surfaces
are ground together in the usual manner to make fluid tight joints. When the
valve F is fully raised the upper end thereof impinges against the underside of the
cover B and presses the bush C into forcible contact with the conical bearing
surface d on the valve spindle so as to effectually prevent the escape of water
between them and permit of the gland H and packing G being removed and
replaced without escape of water although the valve is full open and pressure still
in the valve body or case A. Instead of the cup leather packing hereinbefore
described, ordinary hempen packing or packing of other suitable material may be
employed.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:--
1. The combination and arrangement of parts constituting means whereby the
gland and packing of sluice valves spindles can be removed and replaced while the
valve is fully open and pressure is within the body or case of the valve substantially
as hereinbefore described and illustrated by the accompanying drawing.
2. Spindles of sluice valves having conical surfaces to bear against internally
coned bushes in the cover of the valve body or case, substantially as and for the
purpose hereinbefore described.
Dated this 21st day of June 1805
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents for the Applicant.