Improvements in Valves,
Year: 1895

page_text: :
PROVISIONAL SPECIFICATION.
Improvements in Valves,
We, WILLIAM LUPTON, HENRY EDWARD LUPTON, JOHN CLEGG LUPTON, all of
Grange Iron Works and Scaitcliffe Foundry, Accrington, Iron and Brass Founders,
etc., and WILLIAM CALVERT of 13 Russia Street, Accrington, Brass Finisher, do
hereby declare the nature of our said invention to be as follows:-
Our invention has reference to valves, and particularly to those used for controlling
or shutting-off steam, and in which grit or other objectionable matter has hitherto
been liable to foul the valve seating and cause it to require re-grinding before the
valve can properly shut-off steam, and our invention has for its object to so construct
the valve that the fouling of the seating will not interfere with the shutting-off of
steam, or necessitate re-grinding. To this end therefore our invention consists
essentially of a valve carrying a piston or tubular extension connected to the ordinary
valve spindle, and working in a cylindrical cavity below the valve seating. The
ports for the passage of steam are in the piston and in the side of the cavity, or in a
suitable sleeve or gland with which it is fitted.
Said piston is packed with asbestos or other suitable material held in position by
the sleeve or gland aforesaid which in turn is held against the packing by a screwed
bush or nut beneath the piston. The bush is enclosed within the valve body, and to
To
allow of its adjustment is formed with a square central opening or recess.
enclose such bush and facilitate renewal of the packing or examination of the valve,
etc., the opening in the valve body through which the bush is introduced is provided
with a screw.plug.
By thus providing a piston valve, a double valve effect is obtained, the ordinary
seating may be as rough as can be and even need not be ground, and still the steam
will be effectually shut-off, the packing and gland being so disposed as to afford a
convenient means for remedying any slight leakage of steam and of compensating
for any wear of the piston.
If desired the packing may be on the piston, and our improvements may be
applied to other than steam valves requiring a perfect shut-off.
Dated this 19th day of July 1895.
WILLIAM LUPTON,
HENRY EDWARD LUPTON,
JOHN CLEGG LUPTON,
WILLIAM CALVERT,
By John G. Wilson & Co.,
Agents.

page_text: Improvements in Valves.
We, WILLIAM LUPTON, HENRY EDWARD LUPTON, JOHN CLEGG LUPTON, all of
Grange Iron Works and Scaitcliffe Foundry, Accrington, Iron and Brass Founders,
and WILLIAM CALVERT of 13 Russia Street, Accrington, Brass Finisher, 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:
Our invention has reference to valves, and particularly to steam valves, in which
grit and other objectionable matter is liable to foul the valve seating, or which from
long usage become ineffectual in shutting-off of steam.
?
Now our invention has for its object to afford the valve an auxiliary seating or
duplicate valve action, so that in the event of the valve seating proper becoming
fouled, the auxiliary, seating is available, and vice-versa.
And in order that our said invention shall be the more readily understood and
carried into practical effect, we have hereunto annexed a sheet of drawings, and we
will now proceed to describe the same with the assistance of the various figures and
letters of reference marked thereon.
Fig. 1 is a side elevation (partly in section) of an improved steam valve, and with
the valve closed, and Fig. 2 a complete transverse section, with the valve open.
Figs. 3 and 4 are detail views.
(A) designates the valve proper carried by stem (B), connected to hand wheel (C).
(D) designates the seating for the said valve.
On the underside of valve (A) we form the tubular extension or hollow piston (E)
(see Fig. 3), which takes through the valve passage into the gland or sleeve (F)
(see Fig. 4), and is a sliding fit therein.
In the walls of said hollow piston (E) holes or ports (G) are formed, and in the
gland (F) similar openings or ports (H) are formed of, by preference, corresponding
distance apart or spacing.
When the valve (A) is closed on its seating (D), the holes (G) are covered by the
gland (F) and the holes (H) by the plain part of the piston (E) as shewn in Fig. 1.
When, however, the valve (A) is raised from its seating (D), and to the extent
shewn in Fig. 2, the holes (G) and (H) are respectively uncovered, and a clear way
is made for the passage of the steam through the valve as indicated by the arrows.
Should it now occur, in shutting off steam, that the valve (A), fails to properly bed
itself on the seating (D), say in consequence of grit having embedded itself into the
seating or valve, such objection will not deter the lowering of the piston (E) to an
extent which will serve for the holes (G) and (H) to be covered up and thus ensure
of the steam being shut-off.
To keep the piston (E) steam tight, we provide a ring of asbestos or other suitable
packing (I), either on the piston, or in the wall of the valve passage, and held tightly
by the gland (F). The packing and gland are placed in position through the open
end of the valve body, and held by the screw threaded bush (J) with square opening (J)
or other suitable method for screwing the bush against the gland. When all the
parts are fixed, the plug (K) closes the opening.
The stem (B) is, by preference, given a quick traversing thread to enable the valve
to be quickly opened or shut by a few turns of the hand wheel (C).
Although more particularly applicable to steam valves our improvements may
with advantage be applied to valves for other than steam regulating purposes, and
which are liable to foul.
Having thus particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we wish it to be understood

page_text: that we do not confine ourselves to the precise details, relative proportions or dimen--
sions, or to the exact form, position or relation of the parts, and what we claim.
and desire to secure by Letters Patent is :-
1st. In steam and similar valves the use of an auxiliary seating or duplicate valve.
mounted and operating as and for the purpose set forth.
2nd. In steam valves the combination of a valve (A) with an extension or piston (E),
with holes or ports (G) and working in packed gland (F) with openings (H), or their-
equivalent, as set forth.
3rd. The combination and arrangement of parts forming our improved valve as-
hereinbefore described and illustrated on the accompanying drawings.
Dated this 16th day of April 1896
WILLIAM LUPTON,
HENRY EDWARD LUPTON,
JOHN CLEGG LUPTON,
WILLIAM CALVERT,
By John G. Wilson & Co.,
Agents.
WILLIAM LUPTON,
HENRY EDWARD LUPTON,
JOHN CLEGG LUPTON,
WILLIAM CALVERT,
By John G. Wilson & Co.,
Agents.