Improved Gaseous Fluid Compressor.
Year: 1896

page_text: Improved Gaseous Fluid Compressor.
I, ALEXANDER JOHN ADAMSON, of 10 Rice Hey Road, Egremont, in the
County of Chester, Engineer, do hereby declare the nature of this invention to
be as follows:
This invention has reference to machinery for compressing gaseous fluids, as
ammonia vapour, air, or other gas, more particularly, for purposes of refrigeration;
and has for its object, more especially, to provide a simple, cheap, and at the same
time efficient machine-i.e. compressor-for compressing fluids, such as ammonia
vapour (or like vapours or gases) employed in refrigerating systems and machinery,
and in cases where only small quantities of perishable goods are required to be
preserved, as in the case of ordinary butchers, fish-dealers, and others dealing in
perishable goods to a similar extent, and wherein, therefore, only small machines
are required. The size of machine to which this invention is practically limited, is
one having a stroke up to about 7 or 8 inches.
For these purposes, and to the ends referred to, a compressor, say for compressing
ammonia vapour or the like, according to this invention, comprises a frame consisting
of two upright parts and a bridge part across the top of such parts; a cylinder and
piston (preferably single acting) arranged and acting vertically on said bridge, the
piston rod of which passes through said bridge, which thus serves as a guide,
having, in some cases, a stuffing box at its lower end; a slotted crosshead connected
to the piston rod, and sliding up and down on guides on the inside of said frame;
a crank shaft, the crank pin of which works in the slot of the crosshead and so
moves the crosshead up and down in the frame, and a suitable bearing or bearings
in the bed or lower part of the frame carrying said crank shaft, such shaft being
driven by a wheel and belt or equivalent means.
The cylinder and piston, is, in one case, of the single acting type, the cylinder
being provided at its lower end with an inlet branch and passage, and at its upper
end with a discharge valve working in a case; while the piston itself comprises a
piston body working in connection with the piston rod, the end of which is
constructed and serves as a valve working within a hollow portion of the piston.
The valve piston, in its outward and inward strokes, moves off and onto a seat in
the piston, and alternately draws the piston down, and presses it up, whereby in the
down stroke the vapour or gas passes into the compression end of the cylinder past
the valve, and then the valve closes on its seat in the following return stroke, and
compresses the gas or vapour, and discharges it from or past the outlet valve.
The construction of piston and valve part described, in itself, forms the subject
of separate application for patent, left on even date with this application.
Dated this 3rd day of June 1896
CHEESBROUGH & ROYSTON,
15 Water Street, Liverpool, Applicant's Patent Agents._

page_text: 1, ALEXANDER JOHN ADAMSON, Engineer, of 10 Rice Hey Road, Egremont
in the County of Cheshire, 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:-
This invention has reference to machinery for compressing gaseous fluids, as
ammonia vapour air or other gas, more particularly for the purposes of refrigeration,
and has for its object more especially, to provide a simple, cheap, and at the same
time efficient machine-i.e. compressor for compressing fluids such as ammonia
vapour (or the like vapours or gases,) employed in refrigerating systems and
machinery, and in cases where only small quantities of perishable goods are
required to be preserved, as in the case of ordinary butchers, fish dealers, and
others dealing in perishable goods to a similar extent, and wherein therefore only
small machines are required. The size of machine to which this invention is
practically limited, is one having a stroke up to about seven or eight inches.
For these purposes, and to the ends referred to, a compressor, say for compressing
ammonia vapour or the like, according to this invention, comprises-(referring to
Figs. 1 and 2.) a frame consisting of two upright parts (A. A.) and a bridge
part (B) across the top of such parts; a cylinder (C) and a piston, (preferably
single-acting) arranged and acting vertically on the said bridge, the piston rod of
which passes through said bridge which thus serves as a guide, having, a stuffing
box (D) in some cases at its lower end; a slotted crosshead, (E), connected to the
piston rod, and sliding up and down on guides on the inside of said frame; a crank
shaft, the crank pin of which works in the slot of the crosshead, and so moves the
crosshead up and down in the frame, and a suitable bearing or bearings in the bed
or lower part of the frame carrying said crankshaft, such shaft being driven by a
wheel and belt, or equivalent means.
The cylinder and piston, is, in one case, of the single acting type, the cylinder
being provided at its lower end with an inlet branch and passage (F), and at its
upper end with a discharge valve working in a case (G); while the piston itself
comprises a piston body working in connection with the piston rod, the end of
which is constructed and serves as a valve, working within a hollow portion of the
piston. The valve piston, in its outward and inward strokes, moves off and on to a
seat in the piston, and alternately draws the piston down, and presses it up,
whereby in the down stroke the vapour or gas passes into the compression end of
the cylinder past the valve, and then the valve closes on its seat in the following
return stroke, and compresses the gas or vapour, and discharges it from or past the
outlet valve.
The construction of piston and valve part described, in itself, forms the subject
of a separate application for patent, left on even date with this application.
Having now particularly described and ascertained the nature of my said inveu-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The assembling together of the various parts and contrivances, or the like
herein before mentioned, in the special manner as described, for compressing
ammonia vapours, air, gases, and the like.
Dated this 2nd day of March 1897
ALEX. J. ADAMSON.