Improvements in Compressers and Exhausters for Air or other Gaseous Fluids.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Compressers and Exhausters for Air or other
Gaseous Fluids.
We, JAMES BINGHAM ALLIOTT and JOHN MCCLURE CALDWELL PATON, both of
Bloomsgrove Works, Nottingham, in the County of Nottingham, Engineers, do
hereby declare the nature of this invention to be as follows:-
This invention has reference to an improved construction and arrangement of
parts hereinafter described with reference to the accompanying illustrative draw-
ing, whereby in an air compresser or like gaseous fluid compressing apparatus,
or an air pump or like gaseous fluid exhausting apparatus, the inlet and outlet
valves are made reversible, are brought near together, so as to leave little clearance,
and with their casing are located in a ground seat that is formed in the cast iron.
cylinder casing, together with a passage leading to the cylinder so as to obviate the
use of an external communicating pipe, the arrangement being, moreover, such
as to admit of dispensing with the use of red lead or other jointing materials,"
which, in practice, are liable to work out and clog the valves.
The accompanying drawing shows in longitudinal section so much of an air
compresser as is needful to a clear description of the nature of this invention.
Within the cast-iron body A of the cylinder, there is formed a slightly conical
seat, the opening surrounded by which communicates with the cylinder by the
passage B also formed in the casting.
:
The conical seat is ground to receive an outer casing C of corresponding conical
form externally and to which the guide D of the spindle E of the delivery valve F
is connected by, webs G.
Within the outer casing C, there is formed at C¹ an internal screw thread adapted
to receive a screwed plug provided with a handle for enabling the casing to be
readily withdrawn when required from the seat in the casing A:
;
Into the casing C is ground the externally conical seating piece H of the delivery
valve 1, within which seating there is formed at H¹ an internal screw thread
adapted to receive a screwed plug provided with a handle for enabling the seating,
to be readily withdrawn from the casing C.
Within the larger end of the delivery valve seating piece H, there is formed a
conical seating to receive a correspondingly_coned inner end of the casting K
which contains the seat of the suction valve L and which casting is; by webs M
connected with the guide N of the suction valve spindle O.
PP are studs which pass through holes in the flange of the casting K and are
screwed into threaded holes in the cylinder casting A.
Thus it will be seen that, with this arrangement, the casing C and delivery valve
seating are held in place by the studs P which brace up the casting K containing,
the suction valve seat and the joint is of a mitre or conical form such that the use'
of jointing materials may be dispensed with.
By taking off the two nuts 1" from the studs P the whole arrangement of valve

page_text: seats and other parts can be withdrawn for examination or repairs, and if a spare
set be kept, the same can be promptly substituted.
The suction and delivery valves with their spindles are exact duplicates of each
other; each has a conical face at both its sides, so that a spare valve will go in
either as a suction valve or as a delivery valve, and when, by reason of use in one
position, the face that is in that case the working face becomes worn out, the valve
can be changed over to the other position so that its other face becomes available,
and will constitute practically a new valve.
Qis the spring for keeping the suction valve L normally against its seat; R, the
screwed collar for adjusting the spring; S, split pin (there may be a lock-nut
between R&S); T, the spring for keeping the delivery valve F normally against
its seat; U, the screw for adjusting that spring V, the perforated suction rose.
Dated this 12th day of March 1898
Improvements in Compressers and Exhausters for Air or other
Gaseous Fluids.
We, JAMES BINGHAM ALLIOTT and JOHN MCCLURE CALDWELL PATON, both of
Bloomsgrove Works, Nottingham, in the County of Nottingham, Engineers, do
hereby declare the nature of this invention and in what manner the same
performed to be particularly described and ascertained in and by the following
statement:
-
to be
This invention has reference to an improved construction and arrangement of
parts hereinafter described with reference to the illustrative drawing filed with our
Provisional Specification, whereby in an air compressor or like gaseous fluid
compressing apparatus, or an air pump or like gaseous fluid exhausting apparatus,
the inlet and outlet valves are made reversible, are brought near together, so as to
leave little clearance, and with their casing are located in a ground seat that is
formed in the cast iron cylinder casing together with a passage leading to
the cylinder so as to obviate the use of an external communicating
pipe, the arrangement being, moreover, such as to admit of dispensing with
the use of red lead or other jointing materials, which, in practice, are liable to work
out and clog the valves.
The said drawing shows in longitudinal section so much of an air compressor
as is needful to a clear description of the nature of this invention.
Within the cast-iron body A of the cylinder, there is formed a slightly conical
seat, the opening surrounded by which communicates with the cylinder by the
passage B also formed in the casting. The conical seat is ground to receive a
casing C of corresponding conical form externally and to which the guide 1 of
the spindle E of the delivery valve F is connected by webs G.
Within the outer casing C, which. has a hole through its wall corresponding to
the passage B, there is formed at C an internal screw thread adapted to receive a
screwed plug provided with a handle for enabling the casing, to be readily with-
drawn when required from the seat in the casting A.
Into the casing C is ground the externally conical seating piece H of the delivery
valve F, within which seating there is formed at H₁ an internal screw. thread

page_text: adapted to receive a screwed plug provided with a handle for enabling the seating
to be readily withdrawn from the casing C.
Within the larger end of the delivery valve seating piece H, there is formed a
conical seating to receive a correspondingly coned inner end of the casting
which contains the seat of the suction valve L and which casting is, by webs M
connected to the guide N of the suction valve spindle O.
P, Pare studs which pass through holes in the flange of the casting K and are
screwed into threaded holes in the cylinder casting A.
Thus it will be seen that, with this arrangement, the casing C and delivery valve
scating are held in place by the studs P which brace up the casting K containing
the suction valve seat and the joint is of a mitre or conical form such that the use
of jointing materials may be dispensed with.
By taking off the two nuts P₁ from the studs P the whole arrangement of valve
seats and other parts can be withdrawn for examination or repairs, and if a spare
set be kept, the same can be promptly substituted.
The suction and delivery valves with their spindles are exact duplicates of cach
other; each has a conical face at both its sides, so that a spare valve will go in
either as a suction valve or as a delivery valve, and when, by reason of use in one
position, the face that is in that case the working face becomes worn out, the valve
can be changed over to the other position so that its other face becomes available,
and will constitute practically a new valve.
Qis the spring for keeping the suction valve L normally against its seat; R, the
screwed collar for adjusting the spring; S a split pin (there may as shown, be a lock-
nut between R & S); T the spring for keeping the delivery valve I normally against
its seat U the screw for adjusting that spring, and V the perforated suction rose.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is:-
.
A compresser or exhauster for air or other gaseous fluids constructed with inlet
and outlet valves, seatings and casing constructed and arranged substantially as
hereinbefore described with reference to the drawing for the purposes specified.
EBYAYA
Dated vITIES
Toon way
December
For the Applicants,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.