New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1858-06-03
Nesualork Daily @ribmste
THURSDAY, JUNE 3, 1853.
The Tribune Press-Room

VIII be thrown open to vietors To-Day, where may
lie seen the operation Of printing upon one OF Hoes
gigantic machues, end the foldipg Of the immense
edition OF TEE WEEKLY TRIBUNE.
Amcpg other improvements which shall be glad
10 show our friends is the new engine, about forty
horse power which vas constructed by the Corlss
Steam Engine Co. Of Providence, r. l. 1t is the same
which supplied tue power and received the gold medal
at the Maryland Institute Fair in Baltimore, last sea-
son. It involves all the features which have given
fome to the Corliss engine for tho exceedingly i'm
portsnt qualities Of perfect regulation aud economy of
fuel While the latest and best marine engines, both
English and American, require from four to five pounds
Of coal per hour for each horse power the average
consumption with the Corliss engine, working under
similar conditions, is believed to be lees than three
pounds for the came amount Of actual work. Thomas
d. Stetson OF this city, who was employed to test In
1856 the operation OF Of the best OF these improved
engines driving large cotton mill found that each &C
tusl indicator horsepower required only lSS or shout
1; lbe. Of coal Per hour.
The powerful motion Of steam engines ia due, as all
know to the action of steam upon piston which fits
steanglk in the smooth interior Of cylinder. In the
Coriss engine the seam is received from the boiler at
its ful pressure and is allowed to DIVE the piston with
its full strength through spcron Of its travel then
is "cut off by abrupt closing of the steam valve,
and The quantity already admitted lie allowed to urge
The pston by its expansion alone during tho remainder
Of the stroke The increase of effect due TO the work
ing Of steam eIparsively is low universally ackaow-
edged The CoIliss engine carries out the expan,i ve
principle further and more perfectly than any other 1t
invariably receives the steam from the boiler at lbs full
pressure and regulates the speed by closing the steam
valves eaer or later in the stroke and thus taking
more or less steam as is required Ordinary engines
on the contrary, regulate by "thottle valve, which
ehokes or obsTucts the pipe leading the steam from
the boiler The choking reduces its pressure aud Kills
corresponding portion Of its power.
The improved engine aso opens snd closes its valves
more rapidly than ordinary ergines thus avoiding the
wiredrawioe' due to the drawing moderation OF the
ordinary valve motion the CoIliss valves open and
shut by motion which 10 almost instantaneous. The
result of these two features combined strong and
highly finished machine working steadily and quiet
ly e. clock and taking at each stroke by selfs1uit
ing device just sufficient amount of steam, in its full
visor And expansive use, 10 maintain the speed uadet
all VARYING circumsta rces. When our Mammoth Ten
Cylinder Press is suddenly thrown into action the in
creased resistance upon the engine is so great tina.
steam is allowed 10 follow the piston with its full io;cs
throughout lie whole stroke but afkr one or two revo
lUtions this extra labor is cveIco.De the - cutoff a.
sumo, tie position which the work demands, and tae
variation Of speed is lever suicen. TO be perceptble
VIII the engine We had previously employed-sn eI
ecNtut speciIpen Of the common kind-.he small
prtsses the ulpr floors were subject to unsteady
nottn Whenever one Of the large presses in tho base
nett was IN operation but with The present engine the
siait1s AZ s'oPpu OF tie larger prss now To-
u"do1eo's absolutely unieii, by the most ssnsi-
i've Ct dc otAer mSchires
II 90 Improvements which have attempted 10
5escEbe are the iuvnol Of native Of this STATE
tie Prtsdcns Of the Ccrlss Sea Engine Co. II is
yss since the fret Of these engines was put in opera
tor ard this was machine of 250-hoIse po yer. II
vas completely successful its Grst tiia aud the rt-
,uts of lis peioimsrca induced the erection Of the er
nnsiye works st Providence in Which our engine was
msr ufAcurod. But TIE ny'u.lo hss shared the com
mon fate OF ya'usble ipproyeuuts ia mschssir Tia