Improvements in Valves.
Year: 1893

page_text: Date of Application, 6th June, 1893-Accepted, 8th July, 1893
CUMI DUIM DEMOLICATION.
Improvements in Valves.
I, ALFRED AMES FISHER of 471 Eighteenth Street, Brooklyn, in the State of
New York, United States of America, Manufacturer, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement :-
This invention relates to the improvements in the construction of valves as will
be more clearly hereinafter set forth reference being made to the accompanying
drawing forming part of this Specification, in which :-
Figure 1 is a vertical sectional view of a valve embodying this invention.
Figure 2 is a cross sectional view of the same on the line x-x of Figure 1.
Figure 3 is a side view of the wedge or thrust nut and its discs.
Figure 4 is a view of the rear face of either of the discs.
Figure 5 is a side view of Figure 4 and is equally a plan view of the disc shown
on the left hand side of Figures 1 and 3.
In said drawings A represents the shell or case of the valve having the usual
water-way through it and having its ends adapted to be fitted to the service or other
pipes in the usual manner, the said shell having projecting from the inner walls of
its opposite sides pairs of lugs a separated from each other to form vertical guiding
grooves for the valve stem or its attached wedge or thrust-nut, as is hereinafter
fully described.
The inner end walls of the shell or case A converge upwardly to form the inclined
valve seats A¹ and these seats are designed to form tight joints with the valve when
the latter is closed.
с
The valve consists of a wedge or thrust nut B and interchangeable pivotally
secured discs c the wedge or thrust nut forming the body of the valve and having
its outer walls inclined; two of said walls b having projecting tongues c¹ adapted to
fit the grooves formed by the lugs a on the inner sides of the case whereby the
thrust nut is vertically and loosely guided and prevented from turning, while the
remaining opposite sides of said nut are formed with recesses d and end lugs, or
ears e and through these lugs or ears the pivots of discs c pass the axes of said
pivots being at right angles to the other, and each of said discs having a lug g, and
adapted to be seated in said recesses d and to receive the pivots f so that each disc
is capable of limited motion on its pivot.
As stated the connection of the wedge or thrust nut with the grooved guides on
the inside of the shell is a loose one and this combined with the limited axial move-
ment of which the discs are capable will to a large extent compensate for uneven
wear or imperfect facing of the parts so that both discs will come squarely against
their respective seats.
Also by providing the rear face of each disc with lugs g arranged parallel with
the face of the disc, and fitting said lugs in its recessed seats between the end lugs e
bearings are provided which are parallel with the axis of the discs and which
receive the end thrust of the wedge or nut.
The wedge or thrust nut has an upwardly extending internally threaded extension
into which the threaded stem D is fitted whereby the valve is opened or closed when
the stem is turned in the usual manner, and upon the shell or case is screwed or
fitted a cap E having an upward extension F or stuffing box internally threaded
and provided with a shoulder h.
The valve stem has a collar or flange l entering the stuffing box or extension F,
and a second collar m above the first one, adapted to enter and form a seat for a
screw gland G which is designed to be screwed into the extension or stuffing box to
form a tight packing about the stem in the usual manner.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In a valve, and in combination with a body portion, the compensating discs
pivotally hung upon said body portion in planes one at right angles to the other
substantially as herein described.
2. In a valve, the shell or case and the wedge or thrust nut loosely guided
therein, in combination with discs pivotally hung upon opposite sides of the wedge
or thrust nut in planes at right angles to each other, substantially as herein
.described.
3. In a valve seat, the shell or case, and the loosely guided wedge or thrust nut
having recesses in opposite sides arranged at right angles to each other, in com-
bination with discs having lugs fitting in said recesses and extending parallel with
the faces of the discs, said discs being pivotally hung in planes at right angles to
each other substantially as herein described.
4. In a valve the combination of a shell or case, the cap piece therefor provided
with a stuffing box extension, a valve stem having the collars and m and screw
gland, a wedge or thrust nut threaded on the lower end of the stem and loosely
and vertically guided in its shell, and the discs pivotally hung upon the wedge
or thrust nut in planes at right angles to each other substantially as herein
.described.
Dated this 6th day of June 1802
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London,
Chartered Patent Agent for the Applicant.