IMPROVEMENTS IN AND RELATING TO REFRI- GERATING AND FREEZING APPARATUS
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by William Robert Lake at the Office
of the Commissioners of Patents on the 12th August 1879. A communication
from abroad by Simon Benton Hunt, of the City of New York, and Francis
Effingham Pinto, of Brooklyn, both in the State of New York, United States
of America.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN AND RELATING TO REFRI-
GERATING AND FREEZING APPARATUS." (A communication from abroad by Simon
Benton Hunt, of the City of New York, and Francis Effingham Pinto, of Brooklyn,
both in the State of New York, United States of America.)
This Invention relates to improvements in and connected with apparatus
employed in the manufacture of ice or for refrigerating purposes, whereby the
elastic fluid passes from the compressors and cooling coil, through a suitable trap to
remove the water of condensation from the air preparatory to its passage (while in
a high state of compression) into the expanding engine, so that the greatest possible
amount of elastic force is produced upon the piston head in said engine, to assist the
working steam engine to operate the several parts of the apparatus.
In carrying the said Invention into practice an expanding engine is arranged in
combination with a steam engine and compressors.
In the air chest and valve chamber, forming a part of the expanding engine, I
provide stem valves which are operated by means of pedals and a shaft provided
with pins, said shaft being operated by bevel gearing.
Connecting pipes are attached to the compressors to produce a vacuum to exhaust
the warın air from the freezing or refrigerating chamber, or for other uses.
I provide a chamber filled with coiled piping charged with compressed air to be
passed into any suitable air trap provided with a blow-off water pipe having the
necessary valves to regulate the discharge of condensed water from said trap, this
water of condensation is precipitated to the bottom of the trap by its own gravity,
from whence it is forced out through a pipe and cock by the force of the confined
air under pressure in said trap. The last named pipe passes downward inside the
trap, or the blow-off cock and pipe may be at the bottom and parallel with the
same. Another pipe conveys the dry air under pressure from the trap to the
cylinder of the expanding engine. I do not confine myself to any particular form

page_text: of trap or coil chamber or their connections, as any form of trap may be used to
suit the different applications, but it will be seen that an air trap is applied to draw
off the water of condensation produced in a refrigerating or freezing apparatus, by
which means I produce a drier and better air for mercantile purposes than can be
obtained by means heretofore employed.
The power is returned to the steam engine by connecting the piston rod of the
expanding cylinder to a shaft which operates the piston in the steam cylinder and
air compressors, so that after the air has been compressed by the steam engine it is
admitted into the expanding cylinder at such a position of the pistons of the
compressors and of the steam cylinder, as to assist in carrying out a more perfect
and thorough compression of the air.
".