Improvements in Air and Gas Compressing Engines.
Year: 1892

page_text: Date of Application. 5th Jar., 1892-Accepted, 6th Feb., 1892
COMPLETE SPECIFICATION.
Communicated from abroad by CHARLES GOODWIN EMERY, of New York City,
New York, in the United States of America, Manufacturer.]
Improvements in Air and Gas Compressing Engines.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Chartered Patent Agent, 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 :-
My invention relates to engines and pumps for compressing air or gas con-
structed as I shall describe with reference to the accompanying drawings.
Figures 1 and 2 are vertical sections on planes at right angles to each other of
an engine and pump according to my invention.
Figure 3 is a horizontal section on the line of Figure 1.
Figure 4 is a face view of the duplex valve seats of the steam engine.
Figure 5 is ar end view of one of the plungers 16.
1 and 2 are two steam cylinders in walls 3 of which the steam parts are arranged
in the face of a semicylindrical valve seat 3ª, or it might be two independent valve
seats, one for each cylinder.
Two steam ports 4 and 5 communicate by channels 6, with the upper ends of
the cylinder 2, and 1 respectively; and two ports 7 and 8 lead by channels 9
and 10 to the lower ends of the cylinders 2 and 1 respectively.
Elongated transverse openings 12, extend through the valve seat and wall, into
the cylinders to give passage for rocking arms connecting the pistons to the semi-
cylindrical valves 13, each of which seats upon the concave seats 3".
Below the steam cylinders 1 and 2 are arranged the two compressing cylinders 14,
having pistons or buckets 21 and plungers 16 rigidly attached to the steam
pistons 15, the piston rods and the plungers 16 passing through stuffing boxes 17.
In the lower ends of each plunger 16 is bored a hole 17 to guide the stem 18
of a valve 19, which seats upon a ring 20, screwed into the piston 21, and has rib
guides 25.
The space 22 above the valve 19 communicates with a compression chamber 23,
by several channels 24.
From the compression chamber 23 a passage 26 leads to a second valve chamber 27,
containing a valve 28, by which the compressed air or gas may pass to and through
a pipe 29, to a suitable receptacle.
The lower end of each cylinder 14 is provided with a removable valve seat 30
having through it large openings 31. covered by a valve 32, which may be of
caoutchouc and is free to move up and down upon a stem 33.
By this construc-
tion openings of large area are provided for the inflow of air, thereby rendering
it possible to employ a high piston speed, and yet insure the filling of the cylinder
during the up stroke of the piston, by which stroke, the air previously received in
the chamber 23, is forced past the valve 28 to the pipe 29.
During the down stroke the air below the piston is forced past the valve 19 into
O the compression chamber 23 at a pressure depending on the relation of the annular
area above the piston to the area of the cylinder below it.
Beneath the valve seats 30 are arranged screens 34 to prevent ingress of dirt,
or other foreign matter.
By thus arranging the compressing pumps on what is known as the bucket and
5 plunger principle, they may be both equal in size with their corresponding parts
duplicates of each other; the construction also is of a simple character and the
working may be carried on at high speed, and may be effected by any direct self
acting engines of known kinds which may differ from those hereinbefore described.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In an air or gas compressing engine, the combination of a steam cylinder
and a pump cylinder arranged in line, the steam piston rigidly connected to
the bucket and plunger of the pump, a valve in the bucket, opening to a chamber
communicating by channels with an annular compression chamber, a valved
passage thence to a receptacle and an inlet valve seating over large openings in
a seating at the bottom of the pump cylinder, substantially as described.
2. An air or gas compressing pump having a trunk piston arranged to operate
as a bucket and plunger, having an inlet valve of large area at the bottom, a
discharge valve in the bucket and passage to the annular compression chamber
above the bucket, and a second discharge valve in the passage from the annular
chamber to a receptacle for the compressed fluid, substantially as described.
Dated this 5th doer of Tonow 1800
4.
ABEL & IMRAY,
Agents for the Applicant.
ABEL & IMRAY,
Agents for the Applicant.