Improvements in Machines for Compressing Gases and the like.
Year: 1893

page_text: Date of Application, 9th Aug., 1893
Complete Specification Left, 9th May, 1894-Accepted, 9th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in Machines for Compressing Gases and the like.
KARL EDWARD EBERT, Engineer, and JULIUS AUGUST WENTZEL, Engineer,
both of 37 Rednall Terrace Great Church Lane Hammersmith W. and JOHN
HOLROYD of 133 Croxted Road West Dulwich London S.E. Engineer do hereby
declare the nature of this invention to be as follows:-
This invention relates to machines or apparatus for compressing gases & the
like & consists in providing two caps or glands which fit on both ends of the piston.
rod, one on each end. These caps are attached to the cylinder carrying the piston
head & rod. The water or other motive power is admitted to the caps so as to
operate the piston & thus compress the gas or the like contained in the cylinder.
By means of a suitable arrangement of corks the water or other motive power
may be admitted to or allowed to escape from the caps as desired.
Dated this 9th day of August 1893.
E. EATON,
Agent for Applicants.
We, KARL EDWARD EBERT, Engineer, and JULIUS AUGUST WENTZEL,
Engineer, both of 37 Rednall Terrace, Great Church Lane, Hammersmith, W.
and JOHN HOLROYD of 133 Croxted Road West Dulwich London S.E. Engineer,
do hereby declare the nature of our said 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 relates to machines or apparatus for compressing gases and the
like, and consists in fitting a cylinder and piston with double piston rods or plungers,
which work in stationary tubes or cylinders fitted at each end of the main cylinder,
two stuffing boxes and glands being fitted, one to each piston-rod-plunger.
The pump may be worked by steam, water, or other fluid power, and the relative
diameters and other dimensions of the apparatus may be varied to suit the
respective pressures to be utilised in driving, and to be produced thereby.
And in order that our said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings, in which similar
figures of reference indicate corresponding parts.
Fig. 1 is a longitudinal elevation of our invention (partly in section) and
Fig. 2 is a sectional view, partly on the line 3-4 and partly on the line 5-6 of
Fig. 1.
7 is the main cylinder. 8 (shown by dotted lines) is a piston. 9, 9, are two
piston rods attached to the piston 8. 10, 10, are extended glands, acting as caps,
covers, or cylinders to the rods 9, 9, the latter acting as plungers or pistons in the
cylinders 10, 10. The cylinders 10, 10, are stationary, their inner ends acting as
glands to the stuffing boxes 16, 16, and held in position by ordinary flanges 17.
11 is a slide block, sliding upon the gland-cylinder 10 and prevented from swaying
by the feather or spline 12. The slide block 11 is reciprocated by means of the
rod 15 attached, respectively, at one end to the block 11 and at the other end to
the piston 8, and passing through the stuffing box 18. 13 is a rod attached to the

page_text: .
slide block 11 and passing through the cylinder brackets 19. 14 is a block or tappet,
for operating any suitable kind of valves (not shown in the drawings) for admission
and emission of the motive fluid, alternately to and from the plungers 9, 9, by the
passages 24, 24.
20 is the inlet for the gases to be compressed, open on the right
and left to the passages 23, 23, leading to each end of the cylinder. 25, 25, are
self-closing inlet valves, allowing the gas to enter each end of the cylinder
alternately, and closing automatically to prevent its return. 21, 21, are outlets
for compressed gas. 22, 22, are adjusting screws for regulating and governing the
pressure of the gas.
The steam, water, or other motive fluid, is admitted to the plungers 9, 9,
alternately, driving the piston to the end of the cylinder, and compressing the gas,
which escapes through one of the passages 21, to an ordinary receiver. The
tappet 14 then causes the reversal of the motive power, the compression being
carried on and regulated as described.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
:-
1. In machines for compressing gases and the like, the combination of a double-
acting cylinder and piston, the piston being fitted with a double-ended piston-rod,
each operating as a plunger, enclosed in an elongation of the ordinary gland,
-operating as a hydraulic or other fluid cylinder, substantially as herein before
described and illustrated by the drawings.
2. The improvements in machines for compressing gases and the like, substan-
.tially as herein before described and illustrated by the drawings.
Dated 9th 1004
GEO. DOWNING,
8, Quality Court, London, W.C., Agent.
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.