The Magnolia gazette. [volume] (Magnolia, Miss.) 1872-current, 1891-11-07
rhe agent used ~ Professor
IWininp was Salphuric acid.

-
lTWining was salphuric acid.
He d q, as emly as 1850, ccurcd
res In 5 Which induced him 10
patent his ptosess in England, and
in 1888 tie secured letters patent
i'll tie Unitel States tor his ice
i making apparatus. II WAS not
! until 1893, however that lie made
he impro, ement in his process
which enabled him TO construct a
mach ne which would really manu-
4 cttte ice with certainty and
regularity. His first machine was
erected in Cleveland, Chic, and
mad 4 capacity Of 1860 pounds Of
ice per day. This machine remain-
ed III successful opers tion uniil
1857, and the compression pin
eiple. now generally used IN icc-
making and refrigerahng pro-
cessps, was u pant Of the invention
of Professor Twiuing This was
che real starting point Of ic !
making aud rc(rgerating ma
chimes, although some French IN
ventors had previously produced
machines which would, III "a lin ted
WAY ANA at great cost, produce
zee. Tie credit for the widespread
alleyiauion II the discomfort which
humanity suffered prior 80 the in
PRODUCTION Of nrtifcially made iee
IS due to Professor rvinng, and
il will bo many years before the
compr 81 on principle used ID bis
machine wIll be superseded hy one
more successful. I'll objection 10
Professor TWi0ins's process liy III
his Of igerating agen hich was
dangerous to halle and to operates
The success a ttending the effort.
Of Professor Twini0g stimulated
other scientists Sc rch for sat
iSiactory A. n', aud many were
trird Anhyilrou4 sulphurous oxidr
was tie one adopted With gteat
success by Pictet, a French inyent
tor American chemists; after try
ing all the known volatile agents
with varying dcgiees Of success,
united upon anhydrous ammonia
as the agent best suited for re-
migrating purposes, and It has
bee adopted 10y almost all Ameri-
can Inventors with most crafty
M results. Once the question Of
the refiigeIaliug agent was decii-
Ell, inventors confined their efforts
TO securing he best results with
il; and scores of machine, and pro.
cesses have been invented aud
patented any one Of which will
make ice or refrig rate Il cooling
room, but some a'c more expensive
ID manufacture than others, while
the difference IN the running ex-
penses Of the vafious machines is
very widr. Each inventor, or man
uftcturer, claims points Of superb
ority over all his comp, tit rs, and
tie ouly way cf determining he
rear advantages is by obtaining
written statements Of tile cost ol
running, aud Of The machine, Tor
which atements the maker Will
! youch III the draft Of i contracf.
Thanks to the genius Of AmcIi-
cans. there is wide range in style
ana cons ruction 81 ice.making aud
rpfrigerating machines, some of
which have a vertical action, while
others ate driven horizontally. The
gieat majority Of the machines are
o. Grated on the direct expansion
system, but there are several sue
cessrui expou cuts Of the absorp-
ton process. The underlying prin-
ciple 81 all is the same-expans'on
and coudtnsation-th difference
being mainly in the method by
when the conden.a ion Of he gas,
after it has performed ils cooling
| fui cton. is brought about.
/ viii explain these method,
sons what in detail in my rex
letteL- DIXIE.
ILn .ununl ~. nrt Of file ..nlit1.l