New Orleans daily crescent., 1859-06-28
Letter from Prof. B. Siman Jr, concerning Mr. Moee,
Thompson's Bnggasse Furnace, ~, = - -

Letter from Prof. B. Siman Jr, concerning Mr. Mose
Thompson's Baggasse Furnace.
YALE COLLEGE,
have had occasion to examine with both the the
and the actual workings of Mr. Moses Thompsons Furnac
1857 Mr. Thompson built for me one of his furnaces de
whst ws m 5 s0ngspg N m s "a The
had occasion prepare furnace particular fuel
worked better than had sxpeeted and veil enough satisfy
s e ss us al # ,s sa to fI freely into
prepared to effect changes when the suspension Of The
%e % Hng h bs
MI M Thompsons srna'e was capable Of burning
S' 4d%ps s its futase. fss
not only to Keep steam in twenty five horse power
fuel and expense compared with anthracite coal Wool IL
country where wood was worth 81 cord delivered and
have elsewhere given views in detail respecting the
these snes to say that am nS Of ' opion rfpsa,
IN iha1 e am nnS hs Of a
sugar growing countries where the economical bagase
number experiments and some almost literal cSpes Sn1s
ao e, R be 0as s m m "S e since first
strncng furnace for burning wet fuels both in theory
M Thompson modest unsssumirg man, Of an original
and powerful mind who with small advantages Of edneaiion,
steal which has faed mah inventors Of far greater
be allowed receive both honors and tie peeunary
rewards which belong to those who beow by their genius
B. sILLIMAN. JR,
Professor OF General and Applied Chemistry in Yale College,
BOSTON, JuneG 1859.
sirI have ntd the following patents for furnaces for
burning bagRsse and other wet fuel
st Letters patent granted TO Moses Thompson 10th Apr
1865, and reissled 3lst March, 1857.
ID. Letters patent granted Hager Allyn, May 6, 1856 re-
issued May 4th, 1855
81 81 Letters patent granted stelsy, June 18Th, 1855
1855 reissued August s, 1856.
The hrs OF these Patents cses Thompson 10th April 1855
reissued 3s March, ls5 antedates others This patent
covers method of dry and consuming fuel
These two operations performed simultaneously upon diff
erent portions Of the bagasse the vapors heated
TO the tire CHAMBER and together one assisting
the combustion of the other This patent the use Of
OF hre chambers communicating with aue mixing
chamber, each lire chamber having it, passages and
nnes, with dampsrs for the regulation of the draught,
The furnace described in the patent of Hager Alyn NAV
9th, 1856 clear and ,pable infringement Thompsons
from that portion which being dried being with those
from the pnt which being consumed whole are
ihg and he beneath the boilers pans Immediately
connected with this passage forming the mixing combustion
chamber, in which The gases are consumed.
thrown in and mn o G oar nne 70 sp inc IS
burned but idenicaly the opera carried on MS in
the Thompson furnace While the lower portion of the heap
it is dried sgned and consumed the vapors from drying
portion and the and hot om the burning portions being
mpited in mixing chamber and consumed the operation in
Thompsons furnace being continuous This lrre is ibere
fore, a clear infringement of the Thompson patent.
In the furnace described in msns patent December 4tb
1865 the bagasse thrown continuously single burning
taneousy upon different portions of us gases vapor
and heated air generated all thrown getheg into cham
ber tB of Gans drawngs) where they are mixed and con-
snnea rus furnace therefore undoubed inring
Of Thompsol's patent.
1t is proper shoald state that am Civil Enpinesr
and as SUCH have had charge Of various Govern