Improvements in Disc Valves.
Year: 1895

page_text: Date of Application, 28th Mar., 1895-Accepted, 4th May,
1895
COMPLETE SPECIFICATION.
Improvements in Disc Valves.
SAMUEL HENRY ADAMS Hydraulic Engineer Peaseholm Green York Moses
JAMES ADAMS Sanitary Engineer Peaseholm Green York 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 relates to improvements in disc valves and refers particularly to
the locking when closed-and the unlocking-when it is desired to open the valve.
The face or disc cover of an ordinary disc valve is pivotted at one extreme-to the
frame-the surface of which meeting the surface of the disc-cover-when the latter
is down is held in contact therewith by a catch or lug at or near the base or side
of frame-a projection upon the cover at the side furtherest from the pivot falling
when the cover is down into this catch or lug-so that when completely closed this
disc cover is held at one side by the pivot bolt-and at the other by the catch or
lug. Now in order to open this valve a handle attachment is formed reaching up
to any desired height and upon this being forcibly drawn upwards the valve cover
will be drawn up also and opened-but in practice it is found that if this valve
cover is held by the catch in too close contact with the surface of the frame-it is
extremely difficult to open and that if this cover is not in such close contact the
valve will invariably leak-and that if left for a time closed the two faces may
rust and adhere together. By our improvement we ensure perfect contact of the
two faces and at the same time we contrive that this contact shall be instantly
severed when desired-to enable the operator to draw up and open the valve cover
without undue strain-and by preference we use a disc valve in pattern more or less
as the ordinary type-we use the same pivot hinge but form our lug or catch by
preference of greater width and strength and we employ a wedge which shall form.
a part of our disc valve handle-and which shall have a desired amount of freedom
of movement-but shall yet be attached to the cover or face to he opened. The
operator may thus from above and by a slight pressure upon the handle-and its
weight close the valve-and force the wedge into position between the catch or
lug and the disc cover thus holding the latter in close contact with the frame-and
again when it is desired to open the valve the operator may-from above if
desired-holding the handle provided-work the latter slightly until it is with-
drawn from its former position when the cover will lift freely open.
We provide
by preference a slot in the handle which slot gives the bolt or other attachment to
valve cover the desired amount of play-in order that the wedge may be moved
independently of the disc cover to which it is attached.
Reference to my drawings shew at Fig. 1 a general view of the disc valve and
its attachments. A is the handle itself B is a flattened portion of the handle with
regulating holes C. C in order that the valve may be held open at any given
point suspending it thus by the holes-upon a spike or hook D placed for the
purpose. E is the valve cover or disc face. F the pivot upon which it is hinged.
G the special lug or catch. H is our wedge forming a part of the handle A and its
bar 1, 1; at K is the slot in which bolt or pin L works and is attached to disc
cover E and M is the frame or body of the valve itself.
Fig. 2 shews the same valve in another position partly sectional-here the
lettering is the same but in addition the two faces N and O held in contact by our
wedge H-are shewn-and

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed-we declare that what we
claim are
1st. A wedge which shall form an integral part of a disc valve handle and
which when down shall press the valve cover against the valve face and shall upon
being slightly withdrawn from its former position-free this cover-the handle
then serving to raise it and thereby open the valve-in combination with the
lug or catch between which-and the back of cover-this wedge operates.
2nd. A handle attached to a disc valve cover such handle being provided with
or terminating in a wedge-which wedge shall when down hold the valve closed-
and when up shall liberate the valve cover—in order that the latter may be freely
raised by the handle-in combination with the disc valve to which such wedge
handle is connected.
3rd. A handle terminating in or having a wedge attached or connected thereto―
in combination with a disc valve.
4th. A handle as described with a slot attachment connected to a disc valve
cover-giving a desired feedom of movement to the handle and wedge which shall
yet be connected to and used to lift a disc valve cover-in combination with the
cover so lifted.
5th. All the several parts-as shewn on the drawings filed herewith-and
apparatus though differing in conformity from-substantially the same and for the
same purpose.
·SAMUEL HENRY ADAMS.
MOSES JAMES ADAMS.