The daily critic., 1890-09-17
Dry Cold Air Produced at q Minimum
Amount Of Cost.
TIE SIMPLE PROCESS FULLY DESCRIBED.
The System Especially Effective for Stores
Where Provisions Are Kept in
Stakeholder Than Ice.


is interested was a worthless invention.
but the committee decided that this was
not germane TO the matters under In
vestigation. subsequently the New
York World published a letter saving
that the refrigerator was useless in
ventlon. The Post has investigated the
matter and this morning published the
result of its investigations. which The
Critic reproduces for the purpose of
enabling It's readers TO Judge for them
selves concerning the truthfulness Of the
charge that this device has been adver.
tised 10 do what It cannot do.
The process used Is based on the
Bossi and Smith patent. The follow
letter from l.. W. Sinsabaurh, the
patent attorney of this city, written
January 3, 1889, to Frank A. Smith,
the inventor Of the Smith process, de.
scribes briefly the distinguishing points
in his process:
In compliance with your request Of the
3Oth Of December, 1SSS | have made
careful inspection Of the patent to Rossi,
No. 300, 1873, June 10, 1854, and also your
patent No. 949,O64, September ia. iSsG
The production OF cold by the use OF varl.
Gus salts I'm solution has long been known
and practiced IN laboratory experiments
and is described In various scientific works,
but, so far as | am able TO discover, II was
never worked commercially, T. e., no de-
vices were ever invented prior to the inven-
tiOns set forth In the patents above named
which were capable Of producing cold TO
such an extent as TO make &c valuable for
reirigerating and preserving purposes aud
Tor use In the various arts. The devices
shown, described and claimed in the patent
TO Rossi consist in applying the salts to
water TO cool another body Of water ami
then adding salts TO this cooled body OF
water to cool or rcfrigcrate another body
Of pure water.
This Is, perhaps, an important feature II
properly carried out, and forms the basis,
rs already stated, for a method and ap-
pGiatus for carrying out the principle ON
large scale so as 10 make it OF commercial
value The devices shown aud described aud
claimed In your own patent seems to be an
improvement on Rossi's devices IN that
You have omitted several Of his steps and
attain the same results, In a much more
simple and economical manner, and pro-
duce an apparatus for domestic and other
purposes which Is undoubtedly Of great
value, and parties owning these two patents
seem TO me 20 have the key 20 tho situation,
or Ia other words, they control an the
practical devices for producing cold In a
cheap and reliable manner by the use OF
salts IN solution.
Other expert and dlsInterested testi.
mony can be added as 10 the value Of
the patents. Mr.. Marcus $. Hopkins Of
Hopkins 4 Atkins, patent lawyers. OF
this city, and formerly a member of the
nrm OF Baldwin, Hopkins & Peyton,
writes under date Of September 10, 1890,
70 General Raum, president of the re-
trigerating company, and says:
was employed some years ago By Rossl
and his assignees 10 prepare and prosecute
some applications for patents for them for
refrigeration and the manufacture OF ice.
one OF these patents, No, 300, 1888, granted
June 20, 1881, was a very broad aud im-
pOrtant patent, for what was believed 10 be
new and important process FOR refrigera-
tOn and the manufacture OF lee The in
YeutiOn and patent of smith, with which /
became familiar was believed to be also an
important patent. During my connection
with this business / learned that these In
Yentions had been subjected 70 certain tests
10 demonstrate their value. / was called |
upon IN lsSs by the assignee Of the patent /
above mentioned to make an examination /
of the state Of the act prior TO the granting |
of The patent, as indicated By United States |
and foreign patents aud publications touch |
Ing the matter. This / did carefully and /
thoroughly, and on February 8, lSss, gave /
10 John i. kargasOn, assignee, a favorable /
opinion signed BY the drm Of Baldwin, /
hoPkins 4 Peyton, a copy Of which here
with inclOse you.
never had any doubt, either on my own /
Judgment In the matter or upon infOrma-
tiOn from intelligent and reliable sources,
that the inventions and patents were very /
valuable.
The favorable opinion to which NIr. /
Hopkins refers and which he gave Mr. |
FaTgason is as follows:
lncompliance with your request We have 4
carefully examined the United States
patent Of j. e. R0ssi, No 300 1873, granted
june 10, los4, for the manufacture OF ice,
ana have not been able 10 ind anything IN i
ne prior state Of the art, either in this /
country or abroad, 20 anticipate the
patented invention We therefore believe |
The patent 10 be valid. We have also con
sldeied whether the manufacture or prac
tlee ot the kOssi invention would infringe |
upon any suhsising United States patent,
ana are of the opinion that It would not |
We can safely, therefore, advise YOU thai.
ih our opinion, the way is clear 30 make, J
use and sell the kussi Invention under the
authority Of said patent
From the point Of view of the patent
lawyer the inventions are declared 10 be
Of great value Professor Henry Letf
man Of Philadelphia was asked 10 make
a thorough examination Of the refrigera-
ting process from a scientific standpoint
and 10 embody his conclusions In a re-
port. IN his report the process is thus /
briefly and clearly described
The process consists IN the ut.a zatiou Of
me cold developed by the solution of eer-
tam chemicals iu water. The apparatus I
includes; FlTst, preliminary cooling YES |
sell Vi Which viii be called the first cooler,
consisting Ol a tub in which Is placed a
& "a nine FHr1HHHrh
.ircuiatedi second, a second cooler, which
receives the water from the coil aud Is con
neeted with q coil Of pipe distributed IN |
The interior Of the refrigerator
a supply OF refrigeratiug material Is |
placed ln the first cooler, and about an
"a ual quantity Of water added aud the mix
-uIe thoroughly stirred. a reduction Of Z
temperature Ol about f0rIy-siX degrees Is
produced. Water Is then allowed b dow |
through The coll and into the second vessel, /
u which charge uf the salt has beeu [
placed 3 the solution of this "a further |
4e preston Of the temperature Is obtained,
The utilization 0f the cold produced Is sa-
lisp l1uted lu the interior Of Tie reluEera-
-ui. 1Le principle ei the process is simple I
iud alsQlutei the results Vim necessarily he
1uai4nf under the same conditions The
spparatus L. not hable 20 get out of order
le mAul pul4llous are simple, the materials
safe % handle, NOT subject o. deterioration
and ugf4ualle Do abundance.
Professor Lehman details the results
lf number ~ experiments WITH Tie
process. and goes on % remark that
The economy Of lh's process Is compared
sl-l fair-eratQu ly means af lce depends
entirely upon the recovery ui tlG substance
lsal ana it5 continuous employment. ms
grluL .s lI such 2 character taal lQ loss
.ur i.a mutton lt energy results irQm a4
HllLU.le use. To comparing Il With tha5
lr,lQds iu which lee Is lQt used .l mlsl bs