Improvements in Valves for Compressors or Pumps.
Year: 1898

page_text: Improvements in Valves for Compressors or Pumps.
I, JAMES ATKINSON, of The Woodlands, Marple, Cheshire, Engineer, do
hereby declare the nature of this invention to be as follows:-
The object of this invention is the construction of valves for compressors or
pumps, with a view to cheapening their manufacture, there prompt automatic
action, easy removal for cleaning and their durability.
The valves consist of thin, flat, metalic rings of suitable size. Each valve when
seated closes an annular opening in the seating and when open, the air or other
fluid can pass by the outer edge and also by the inner edge of the valve.
The seatings consist of separate castings, each having a passage to the annular
opening formed or cored in it and opening to the inside or to the outside as
may be desired.
The valves and seatings are so arranged that any convenient number of them
can be combined so as to form a nest of similar valves and seatings, placed one
above the other, all of the same dimensions, interchangeable and all held together,
as well as in position by a bolt, (or bolts,) which also secures a suitable cover.
Each valve is guided and limited in its lift by guides and stops formed on the
underside of the seating of the valve above it.
The valves are very light, as they have a very limited lift they open and close
automatically, very promptly, with a minimum of shock or wear and ample area
of opening can be easily provided.
A nest of valves and seats may be used for suction valves and a similar nest
for delivery valves. In large compressors more than one nest for each purpose
may be used, the nests being arranged in cavities or suitable connections to the
compressor cylinder.
In some instances the inside of the nests may be partially filled by projecting
pieces either fixed inside the nests or attached to the piston so as to more or less
fill the clearance spaces at the time of end stroke.
In another arrangement a nest of delivery valves may be inserted inside a nest
of suction valves or a nest of suction valves inside a nest of delivery valves.
Dated this Fifth day of November 1898.
COMPLETE SPECIFICATION.
Improvements in Valves for Compressors or Pumps.
I, JAMES ATKINSON, of The Woodlands, Marple, Cheshire, 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 follow-
ing statement:—
The object of this invention is the construction of valves for compressors or
Improvements in Valves for Compressors or Pumps.
I, JAMES ATKINSON, of The Woodlands, Marple, Cheshire, 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 follow-
ing statement: —
The object of this invention is the construction of valves for compressors or

page_text: pumps with a view to cheapening their manufacture, their prompt automatic
action, easy removal for cleaning and durability.
With a view to a clear explanation of this invention I append two sheets of
drawings in which Fig. 1 Sheet 1 is a section through two valves and seats.
Fig. 2, Sheet 1 is a plan of the same. Fig. 3 Sheet 2 is an elevation, partly in
section, of a portion of an air compressor drawn to a smaller scale and showing
how the valves may be arranged.
The valves A consist of thin flat metalic rings of suitable size. Each valve
when seated closes an annular opening B in the seating C, and when open the
air or other fluid can pass by the outer edge and also by the inner edge of the
valve.
The seatings C consist of separate castings each having a passage D to the
annular opening B formed or cored in it, these openings being to the outside,
or to the inside (as shown), as may be desired.
The valves A and seatings C are so arranged that any convenient number of
them can be combined so as to form a nest of similar valves and seatings, placed
one above the other, all of the same dimensions, interchangeable and all held
together, as well as in position by a bolt E (or bolts) which also secures a suitable
cover F.
Each valve A is guided and limited in its lift by guides and stops G formed on
the underside of the seating C of the valve above it.
The valves A are very light, as they have a very limited lift, they open and
close automatically, very promptly, with a minimum of shock or wear and
ample area of openings can be easily provided.
A nest of valves and seats H, see Fig. 3, Sheet 2, may be used for suction
valves and a similar nest I for delivery valves. In large compressors more than
one nest for each purpose may be used, the nests being arranged in cavities or
suitable connections to the compression cylinder.
In some instances, for the purpose of reducing the clearance spaces, the inside
of the nests may be partially filled by pieces projecting from the cover or attached
to the piston. In Fig. 3 Sheet 2 a projecting piece J attached to the piston K
is shown which will partially fill up the passage L to the valves and thus also
reduce the clearance.
In some instances a nest of delivery valves may be placed inside a nest of
suction valves or a nest of suction valves inside a nest of delivery valves.
These valves are suitable for use in compressors or exhausters working with
air or other gases, also with a mixture of gases and vapour or liquid such as would
be the case if used as air pumps in connection with steam engines if suitable
arrangements are made for preventing the sudden access of the water to the
delivery valves. In some instances they may be used for pumping liquids if made
sufficiently strong.
my said
Having now particularly described and ascertained the nature of
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
1. The construction and operation of the suction and delivery valves, with
their respective seatings, for compressors and pumps, of similar interchangeable
parts, which may be placed one on the other so as to form suitable nests of valves
and seatings, substantially as described and illustrated.
2. The general arrangement and construction of compressor and pump valves
with their respective seatings, substantially as described and illustrated.
Dated this 18th day of September 1899.
JAMES ATKINSON.