Improvements in Valves.
Year: 1893

page_text: Date of Application, 1st June, 1893
Complete Specification Left, 1st Mar., 1894-Accepted, 5th May, 1894
Improvements in Valves.
I, JAMES DIXON CHURCHILL, of 37 Alexandra Road, Finsbury Park, in the
County of London, Engineer, do hereby declare the nature of this invention to be
as follows:-
This invention has for object improvements in valves of the type in which a tapered
slotted valve plug is supported in a depending tapered slotted valve seat and
means are provided for adjusting the position of the valve plug relatively to its
seat to compensate for wear, and it has for object to so construct such valves that
the valve plug and valve seat can be readily inspected or removed without breaking
the connections with the pipes with which the valve is connected when in position
for use.
For this purpose the valve case is constructed with an internal wall or division
located between the inlet and outlet branches and formed with a hole to the edge
of which the depending slotted valve seat is secured by suitable means such as
studs or bolts or by screwing and to the valve case opposite the valve seat is
secured a removable cover that carries the stuffing box for the valve spindle and
is independent of the inlet and outlet branches, the arrangement being such that
after the valve has been connected up with pipes for use, ready access can be
gained to the valve seat and valve plug without interfering with the pipe
connections by simply removing the cover.
To permit the valve plug of a valve of the type herein referred to to be
adjusted in an endways direction from the exterior of the valve case, there is
secured to the valve spindle according to this invention at a point outside
the stuffing box therefor, a collar that is free to rotate against a screw-threaded
nut or sleeve arranged to screw into a plate fixed to the exterior of the valve
case by suitable means such as studs and nuts. The collar may be fixed upon the
valve spindle by screwing and pinning, and be loosely retained within the nut or
sleeve by a screw threaded bush, screwed into the nut, suitable oil grooves
being provided to admit lubricant to the annular groove in which the collar
is retained. By this construction the stuffing box can be cast in one piece with
the valve cover, thereby dispensing with the necessity of making a steam tight
joint between these parts as heretofore required in constructions in which the
adjustment is provided for by making the stuffing box endways adjustable in the
valve case.
To enable the valve spindle to be accurately adjusted to a predetermined extent
at each adjusting operation, the nut or sleeve is or may be provided with a flange
formed with a number of spaced grooves or holes into one or other of which a pin
or equivalent device carried by the plate into which the nut or sleeve is screwed,
can be caused to enter and hold the nut or sleeve in place. The arrangement is
such that when it is desired to adjust the valve plug in an endways direction, the
pin or equivalent is disengaged from the nut or sleeve which is then rotated to an
extent corresponding to the distance between two or more of the grooves or holes
in the flange, after which the pin or equivalent is replaced to hold the nut or sleeve
in the adjusted position.

page_text: Valves constructed as herein before described can be used for various purposes
such for examples as throttle valves, and as compound attachment valves for marine
and other compound engines.
Dated this 1st day of June 1893.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMILLIE DI DUITIATION.
Improvements in Valves.
I, JAMES DIXON CHURCHILL, of 37, Alexandra Road, Finsbury Park, in the
County of London, 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 has reference to improvements in valves of the type in which a
tapered slotted valve plug is supported in a depending tapered slotted valve seat
and means are provided for adjusting the position of the valve plug relatively to
its seat to compensate for wear, and it has for object inter alia to so construct such
valves that the valve plug and valve seat can be readily inspected or removed
without breaking the connections with the pipes with which the valve is connected
when in position for use.
For this purpose the valve case is constructed with an internal wall or division
located between the inlet and outlet branches and formed with a hole to the edge-
of which the depending slotted valve seat is secured by suitable means such as
studs or bolts or by screwing, and to the valve case opposite the valve seat is
secured a removable cover that carries the stuffing box for the valve spindle and is
independent of the inlet and outlet branches, the arrangement being such that after
the valve has been connected up with pipes for use, ready access can be gained to
the valve seat and valve plug, without interfering with the pipe connections, by
simply removing the cover.
In the accompanying drawings,
Fig. 1 is a longitudinal section ;
Fig. 2 a transverse section; and
Fig. 3 is a detail view, of a valve of the kind herein referred to constructed
according to this invention.
1 is the valve case formed with flanged inlet and outlet branches 2 and 2"
respectively, between which is located an internal wall or division 3 formed with a
hole or orifice 4. 5 is the depending slotted valve sent secured in position by
means of studs 6 projecting from the wall 3 through holes in a flange of the valve
Beat and provided with nuts 7. Above the valve seat, the valve case is formed
with an opening closed by a removable cover 8 having a stuffing box 9 cast in one
therewith and through which passes the valve spindle 10, preferably formed in one
with the slotted valve plug 11 as shewn. The opening in the top of the valve case
is of such a size as to permit of the passage of the valve plug and seat.
To permit the valve plug of a valve of the type herein referred to, to be adjusted
in an endways direction from the exterior of the valve case, there is secured to the
valve spindle 10, according to this invention, at a point outside the stuffing box
therefor, a collar 12 that is free to rotate against a screw-threaded nut or sleeve 13,
that is capable of being screwed more or less into a plate 14 fixed to the exterior of
the valve case 1 by any suitable means such as studs 15 and nuts 15*. The collar 12
may be fixed upon the valve spindle by screwing and pinning, and be loosely
retained within the nut or sleeve 13 by a screw-threaded bush 16, screwed into the
nut, suitable oil grooves 13ª being provided to admit lubricant to the annular

page_text: groove in which the collar is retained. By this construction the stuffing box 9 can
be cast in one piece with the valve cover, thereby dispensing with the necessity of
making a steam-tight joint between these parts, as heretofore required in con--
structions in which the adjustment is provided for by making the stuffing box
end ways adjustable in the valve case.
To enable the valve spindle 10 to be accurately adjusted to a predetermined
extent at each adjusting operation, the nut or sleeve 13 is or may be provided with
a flange 17 formed with a number of spaced recesses 18 (or holes) into one or other
of which a pin 19, or equivalent device, carried by the plate 14, can be caused to.
enter and hold the said nut or sleeve in place. As will be seen the arrangement is.
such that when it is desired to adjust the valve plug in an endways direction by
screwing the nut or sleeve into the plate 14, the pin 19 (or equivalent) is disengaged
from the nut or sleeve, which is then rotated to an extent corresponding to the
distance between two or more of the recesses 18 (or holes) in the flange, after
which the pin or equivalent is replaced to hold the nut or sleeve in the adjusted
position.
Valves constructed as hereinbefore described can be used for various purposes
such for examples as throttle valves, and as compound attachment valves for marine
and other compound engines, as and for the purpose described in the Specification
of Letters Patent granted to me No. 6590 of 1890.
Having now particularly described and ascertained the nature of the said inven-.
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A valve of the type herein referred to constructed with an internal wall or
division located between the inlet and outlet branches and formed with a hole to
the edge of which the depending slotted valve seat is secured, and with a removable
cover provided with a stuffing box for the valve spiudle, this cover being arranged
opposite the said seat and independent of the inlet and outlet branches so that upon
removing said cover ready access can be gained to the said valve seat and valve
plug without interfering with the pipe connections substantially as described and
shown.
2. My improved valve and means for adjusting the valve plug relatively to its.
seat substantially as described and shown.
Dated this 1st day of March 1894.