Improvements in Valves.
Year: 1892

page_text: Date of Application, 20th July, 1892
Complete Specification Left, 12th Apr., 1893-Accepted, 13th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Valves.
I, WILLIAM COOPER, of Baltic Chambers, Newcastle-on-Tyne, Engineer, do
hereby declare the nature of this invention to be as follows:-
The object of my invention is to diminish the noise and wear and tear arising
I construct
from the hammering action of valves when closing, for which purpose
valves wholly or partly of aluminium whereby owing to the small specific gravity
of that metal the inertia of the valves is considerably diminished and they are
adapted to respond more easily to the fluid pressure, so that for example in an air
pump a very low pressure in the condenser will suffice to lift the valve."
on
Foot valves for pumps, suction valves for feed and bilge pumps, check valves
boilers, as well as straight-lift, flexible ball and other kinds of valves may be
constructed, according to my invention; and may be used in conjunction with valve
seats and casings made either of the same or of other substances.
Dated this 19th day of July 1892.
TIT
BOUDED
By L. W., per F. B.
COMPLETE SPECIFICATION.
Improvements in Valves.
I, WILLIAM COOPER, of Baltic Chambers, Newcastle-on-Tyne, 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:
I
The object of my invention is to diminish the noise and the wear and tear
arising from the hammering action of valves when closing, for which purpose
construct valves wholly or partly of aluminium whereby owing to the small
specific gravity of that metal the inertia of the valves is considerably diminished
and they are adapted to respond more easily to the fluid pressure, so that for
example in the air-pump, a very low pressure in the condenser will suffice to lift
the valve.
Foot valves for pumps, suction valves for feed and bilge pumps, check valves on
boilers, as well as straight-lift, flexible, ball, and other kinds of valves may be
constructed according to my invention; and may be used in conjunction with valve
seats and casings made either of the same or of other substances.
The accompanying drawings illustrate by way of example a few forms of valves
of the kind referred to the lifting or moving parts of which according to this invention,
are constructed of aluminium.
Fig. 1 is a central vertical section and
Fig. 2 is a plan of a foot or lift valve.
1 is the lifting or moving part of the valve consisting of a disc of aluminium
through which extends a guide pin 2 carried by a valve seat 3 which may also
be of aluminium, or of any other suitable metal or alloy. 4 is a guard of brass
or other material carried by the guide pin 2 and serving to limit the upward
movement of the valve. This guard and also the seat 3 are formed with a
number of slots 4ª and 3ª respectively, as well understood, for the passage of
the air or other fluid being pumped or the passage of which is to be controlled by
the valve.
Figs. 3 and 4 are similar views to Figs. 1 and 2 showing another form of lift

page_text: valve in which the lifting or moving part 1 of aluminium is made of ordinary
conical form with guide wings 1ª. 5 is a stop to limit the upward movement of
the valve.
Fig. 5 is an elevation partly in vertical section; and
Fig. 6 is a plan, of a ball valve in which the lifting or moving part 1 consists of
a solid or hollow ball of aluminium retained in place by a cage 6 secured to the
valve seat 3 in a manner well understood.**
•
Figs. 7 and 8 are respectively a vertical section and a plan showing a lift valve
somewhat similar to that shown in Figs. 1 and 2 but in which the lifting or
movable part 1 of aluminium is of a hollow or dished shape and its upward move-
ment is limited by a washer 7 and nut instead of by a slotted guard and nut as in
the first mentioned arrangement. This modified construction is suitable for lift
valves of small size.
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 :-
A valve of the kind hereinabove referred to wherein aluminium is employed
in the construction of the lifting or moving part as described for the purpose
specified.