Improvements in Valves for Controlling the Supply of Liquids.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Valves for Controlling the Supply of Liquids.
We, REUBEN THOMAS PRESTON, of the Firm of J. Stone & Co., of Deptford, in the
County of Kent, and WILLIAM WAYLAN, of 1, Archbishop Place, Brixton, in the
County of Surrey, Engineers, do hereby declare the nature of this invention to be
as follows:-
. The main object of this invention is to afford a ready and effectual means for
preventing leakage round the spindles of sluice valves and other valves for
controlling the supply of liquids. For this purpose we enlarge the spindle in one
place and form therein an annular recess wherein the lower flange of a so call hat
leather of leather or other suitable material find its place by preference so as to
practically fill and fit said recess. The upper flauge or collar of the hat leather is
squeezed down on the flange of the cover of the valve casting by means of a plate
with bolts and nuts or for smaller valves we use a screwed cap. We may also in
addition employ the usual stuffing box on the cover chiefly for excluding dust and
grit from entering round the spindle. By this arrangement we not only exclude
leakage round the spindle but obtain a ready means for replacing the hat leather
without shutting down the main, as the flange on the cover has merely to be taken
off without removing the spindle.
Dated this 21st day of 1807
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
Improvements in Valves for Controlling the Supply of Liquids.
We, REUBEN THOMAS PRESTON, of the Firm of J. Stone & Co., of Deptford, in
the County of Kent, and WILLIAM WAYLAN, of 1, Archbishop Place, Brixton, in the
County of Surrey, Engineers, 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 :-
The main object of this invention is to afford a ready and effectual means for
preventing leakage round the spindles of sluice valves and other valves for
controlling the supply or flow of liquids. For this purpose we enlarge the spindle
in one place and form in such enlarged part or collar an annular recess wherein the
lower flange of a so called hat leather (of leather or other suitable material) finds its
The upper
place, by preference so as to practically fill and fit the said recess.
flange or collar of the hat leather is squeezed down on the flange of the cover of
the valve casing by means of a plate with bolts and nuts, or for smaller valves we
n

page_text: use a screwed cap. We may also in addition employ the usual stuffing box on
the cover, chiefly for excluding dust and grit from entering ronnd the spindle.
The drawing is a vertical section through the cover of a sluice valve casing and
showing the spindle partly in section. The spindle A is made with an enlarged
part or collar wherein is formed an annular recess wherein the lower flange of the
hat leather B finds its place so as to practically fill it. The upper flange of the
hat leather is squeezed down by means of a plate C and bolts and nuts as
shown, but we prefer to put in an intermediate washer D say of leather which
under the pressure of the plate C assumes the shape shown as it embeds itself in the
hat leather B. In addition to the plate C there may as shown be a usual stuffing
box with packing and gland E chiefly for keeping out grit and dust.
By this invention we not only exclude leakage round the spindle but do away
with the shutting down of a water main or other pipe to which the valve is applied
when it is desired to replace a hat leather, and it may be also a stuffing box
packing, and avoid delay and great waste of water caused by letting off the water
for the purpose of taking the pressure off the stuffing box. The enlargement of
the spindle being accurately recessed into the valve cover as shewn and the hat
leather filling the recess in the said enlargement a long or circuitous path is created
for any water that may tend to leak through.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is —
Forming the valve spindle with a recess in an enlargement or collar, said recess
receiving the lower flange of a hat leather the upper flange of which is held down
against the cover of the valve casing, substantially as and for the purpose set
forth
Dated this Ninth day of May 1898.
JENSEN & SON,
77, Chancery Lane, London W.C., Patent Agents.