Improvements in Valves for Steam, Gas, Air, Water, and other Fluids.
Year: 1893

page_text: Date of Application, 11th Feb., 1893
Complete Specification Left, 11th Nov., 1893-Accepted, 20th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in Valves for Steam, Gas, Air, Water, and other
Fluids.
We, MARK LANGDALE SYKES, of Union Street Foundry, Ardwick, Manchester,
in the County of Lancaster, Engineer, and WALTER WALKER, of the same place,
Foreman Pattern Maker, do hereby declare the nature of this invention to be as
follows:
Our invention relates to valves for steam and other fluids, our objects being to
obtain a clear or full way passage for the steam or other fluid through the valve
and to prevent wear between the valve and its seating.
The spindle of our improved valve passes through a stuffing box on the valve
casing and its end is screwed into a bracket with a nut which is fitted in slideways
in the casing; a toggle joint piece is pivoted at one end to this bracket and at the
other to a casting which is faced or carries a valve face of any suitable material;
to this casting is also pivoted a second toggle joint piece, which is pivoted to a slide
piece fitted in slideways in the casing.
In order to open the valve when it is closed the spindle is turned so as to raise
the bracket with the nut, and draw the valve face from its seating, the toggle
joints and the slide piece allowing the valve to make a quarter turn and thereby
leave a clear or full way passage for the steam, water or other fluid.
The slide ways in the valve casing may be so arranged that the valve can be
made to seat at either end of the casing, by reversing the stuffing box and parts
or changed from one end to the other when wear has taken place.
An adjusting screw can be employed to regulate the amount of traverse of the
sliding piece in one direction and thereby prevent the face of the valve from being
unduly forced against its seating and also to ensure the face of the valve finding
its proper seating.
Dated this 10th day of February 1893
H. B. BARLOW & GILLETT,
Agents for Applicants.
COMPLETE SPECIFICATION.
Improvements in Valves for Steam, Gas, Air, Water, and other
Fluids.
We, MARK LANGDALE SYKES, of Union Street Foundry, Ardwick, Manchester,
in the County of Lancaster, Engineer, and WALTER WALKER, of the same place,
Foreman Pattern Maker, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:→
Our invention relates to valves for steam and other fluids, our objects being to
obtain a clear or full way passage for the steam or other fluid through the valve
and to prevent wear between the valve and its seating.
And in order that our invention may be fully understood and readily carried
into effect we will describe the accompanying two sheets of drawings reference
being had to the figures and letters marked thereon.

page_text: Figures 1 and 2 are sectional elevations of our improved screw down full way
valve and
Fig. 3 is a plan view showing the valve casing in section.
Figs. 4 and 5 are sectional elevations of an alternative construction and
Fig. 6 is a sectional elevation of a back pressure valve made according to our
invention.
In Figs. 1, 2 and 3,-the spindle a of our improved valve passes through a
stuffing box bon the valve casing c and has a hand wheel or handle d fixed upon it.
The lower end of the spindle a is screwed into a bracket e which is fitted in slide-
ways c' in the casing c; a toggle joint piece fis pivoted at one end to this bracket e
and at the other to a casting 9 which is faced or carries a valve face g¹ of any
suitable material; to this casting g is also pivoted a second toggle joint piece h
which is pivoted to an adjustable piece i fitted in slideways c¹ in the casing.
In order to open the valve when it is closed as shown in Fig. 1 the spindle a is
turned by means of the hand wheel or handle d so as to raise the screwed
bracket e and draw the valve face g' from its seating into the position shown in
Fig. 2 the toggle joints fand and the adjustable piece i allowing the valve to
make a quarter turn and thereby leave a clear or full way passage for the steam,
water or other fluid.
The slideways c¹ in the valve casing may be so arranged that the valve g
can be made to seat at either end of the casing, by reversing the stuffing
box and parts or changed from one end to the other when
taken place.
wear has
An adjusting screw k can be employed as shown to regulate the position of
the piece in either direction and thereby prevent the face g¹ of the valve g
from being unduly forced against its seating and also to ensure the face of the valve
finding its proper seating.
In the alternative construction illustrated by Figs. 4 and 5 the screwed spindle a
and nut e are dispensed with and instead the valve g is connected by the toggle
piece to projections m² on a sliding rack m fitted in slideways c', which is raised
and lowered by a pinion n fixed on a spindle o which passes through a stuffing box b
and is capable of being turned to open or close the valve g by means of a hand
wheel or handle not shown.
This valve is preferably also so arranged and fitted that it can be made to
seat at either end of the casing by simply reversing the stuffing box and the
moving parts.
In the back pressure valve illustrated by Fig. 6, the action of the valve being
automatic the toggle and its connections are dispensed with and instead a
projection p¹ is cast on the cover p of the valve casing c. This projection p¹
forms a stop and abutment for the valve g. In this case also the valve can be
reversed by simply lifting off and turning round the cover p and the parts
depending therefrom.
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 :-
The several constructions combinations and arrangements of parts embodying
our improvements in valves substantially as herein described with reference to the
accompanying drawings.
……ני.
1
H. B. BARLOW & GILLETT,
17, St. Ann's Square, Manchester, Agents for Applicants.