IMPROVED ARRANGEMENT OF APPARATUS FOR MECHANICALLY COOLING AIR FOR PRESERVATIVE AND OTHER PURPOSES
Year: 1884

page_text: I, JOSEPH JAMES COLEMAN, of 45 West Nile Street, Glasgow, in the County of
Lanark, North Britain, Chemist and Engineer, do hereby declare the nature of my
said Invention for "IMPROVED ARRANGEMENT OF APPARATUS FOR MECHANICALLY
COOLING AIR FOR PRESERVATIVE AND OTHER PURPOSES" and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
My said Invention relates to apparatus for mechanically cooling air and of a
kind operating, to a great extent, like apparatus described in the Specification of
Letters Patent No 1034, of 1877, granted to Henry Bell, James Bell and myself;
and the principle object of my present Invention is to arrange or combine the
parts, of the apparatus in an improved manner when the motor parts are of a kind
in which combustible gas or vapor is employed. A portion of my presont
improvements is however also applicable when steam or other motive agent
is used.
My improved arrangement is shown on two accompanying Sheets of explanatory
Drawings, Figures, 1, and 2, on Sheet, 1, being a sectional plan and a sectional
side elevation; and Figures, 3, and 4, on Sheet, 2, comprising transverse vertical
sections as at different parts. In these Drawings the same reference numbrals aro
used to mark the same or like parts wherever they are repeated.
The parts of the apparatus are carried for the most part on the top of a deep
hollow bed frame, 5, in the form of an oblong rectangular casing. At the top of
the bed frame, 5, and at one end there are three bearings, 6, for a crank shaft, 7,
formed with two cranks, 8, which both lie in the same direction. At the other end
of the top of the bed frame, 5, there are two gas-motor cylinders, 9, the valve and
other details of which are not shown but which are like those of what is known as
the "Otto" twin motor, the gas being exploded in the two cylinders, 9, during
alternate revolutions of the crank shaft, 7. In the axial line of one gas-motor
cylinder, 9, and between it and the corresponding crank, 8, there is an air
compressing cylinder, 10; and between the other gas-motor cylinder, 9, and its
crank, 8, there is similarly placed an air expansion cylinder, 11. One gas-motor
piston and the piston of the air-compressing cylinder, 10, are fixed to one rod, 12,
and the other gas-motor piston and the piston of the air-expansion cylinder, 11,

page_text: are fixed to another rod, 13, and the two piston rods, 12, 13, are connected in the
ordinary way to the cranks, 8. The valve details and other minor parts connected
with the compression and expansion cylinders, 10, 11, may in construction and
arrangement be like those of existing cold-air machines. The air is drawn into the
compression cylinder, 10, through a pipe, 14, and the compressed air passes from
that cylinder by a pipe, 15, which leads it to the bottom of a tower, 16, in which
tower (after having been partly cooled by the injection of water into the
cylinder, 10, during compression) it is further cooled by water, such water being
injected into the top of the tower and descending whilst the air passes upwards in
the opposite direction. Inside of the tower, 16, there are a number of perforated
plates, 17, for repeatedly breaking up the water during its descent. From the top
of the tower, 16, the cooled compressed air passes by a pipe, 18, to a casing, 19,
constructed within and near one end of the bedframe, 5, (being indicated by dotted
lines in Figure, 2); and the air proceeds from this casing, 19, through a number of
"horizontal drying pipes, 20, to a similar casing; 21,-at-the-other-end-from-which-it-
passes by a pipe, 22, to the valve chest, 23, of the expansion cylinder, 11. The
sides of the bedframe, 5, are formed with openings, 24, through which air may
enter in amongst the drying pipes, 20; or comparatively cold air which has been
through the meat room or other space receiving the air cooled by the machine
may be led by a suitable duct or ducts into the space within the-bed frame, 5,-so-as-
to act on the drying pipes, 20, the openings, 24, being then closer or connected to
such duct or ducts. When the air entering by the openings, 24, has not been
specially cooled, or even when it is the waste cold air, water may be sprinkled
upon the outsides of the drying pipes, 20, so as through its evaporation to exert a
-cooling-action, which will-take-effect_not_only_on_the_compressed air inside the
pipes, 20, but also on the air outside of them. The pipe, 14, by which air is drawn
into the compressing cylinder, 10, is-connected to the side of the bedframe, 5, so
that the air drawn through it will be cooler than the general atmosphere either in
consequence of its being waste cold-air-or-in-consequence of the sprinkling-of-the-
pipes, 20, with water. In Figure, 3, the exhaust port, 25, from the expansion
cylinder, 11, is shown in section, together with the entering end of the wooden
trunk or duct, 26, into which the cold air passes.
I do not restrict myself to the precise details bereinbefore described or shown in
tho accompanying Drawings so long as the distinctive features of my Invention
are retained; these being, 1, the arrangement or combination of parts forming the
entire machine, and 2, the mode of adapting the "twin" gas motor apparatus to
work apparatus for mechanically cooling air.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, 1 declare that what
I claim is
1. The arrangement or combination of parts forming my improved apparatus for
mechanically cooling air substantially as herein before described and shown in the
accompanying Drawings.
2. The mode herein before described of adapting "twin" gas-motor apparatus to
work apparatus for mechanically cooling air.
m
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