Richmond enquirer. [volume] (Richmond, Va.) 1815-1867, 1823-07-08

strokes in minute when TIC engine is at fu;f york In
this engine is almost incredbie the generator
only about eigh, gallons of water working cy lin
the piston about - inches in leDgt The piston gives
motion to crank aud 1ywheel similar eng in.ss
most decided improvement Is nso made 10y MIR. L.
IN eondensng the steam under degree of
sure and at Temperature OF about so, aud in this state
returning IL INTO the reservoir Tor The successive supply OF
the generator In consequence ofthis
nen' The space occupied by the engine with all its appute
ees uoes MOI exceed an area oil six feet by eight The
present model calculated as equal 10 horse power
size for 50 horse engine with the exception
ing cylinder and piston The consumption this
engine Is within two bushels per day, when at iu work
All risk OF accident enectualiy provided against by
the following ingenious conrivsnec. IL should be
membered, that owing the small surface
ueng Generated, in suicien, ouani,v fur ZACH sncceed
ing sIroke OF the piston there Is much less liability
dent from this engine than in other
the Induction pipe u steam is Produced is caleula-
ted TO withstand internal force o 1000 pounds the
square inch, and il is also provided with thin cop, er
tube which is calculated burst pressure OF
pounds while tue pressure under which SIR Perkins works
the engine does exceed so pounds square
In 90 der 10 demonstrate the perfect safety opera
zion oil lis engine Notwithstanding Immense Internal
pressure Mr. Perkins in his polite efforts satisfy the
scuPles anu fears OF his numerous scientific friends has
several occasionsurgrd je power of the Till
OPEN the sdes oil tie copper lube without occasionins the
smallest risk, either to the spectator any other
par, OF the apparatus This mode of allowing the escape
o the steam ny rendng open the sides Of III. ball. (Which
made OF deierminRie StrengtD probably superior IN
the certainty OF operation any modification Of safety
valves.
1t is also very remarkable fact the steam which
eSSaes IN Case - u any elevated
temperature which might have been expected it's
proiisious expan-ive lOrce This fact involve
some points connected with the doctrine latent heat or
tue conversion OF hud io gaseous matter, and
WIN winch we are, at present. but imperieStly
quained We understand MIR. z. further engag ed on
some very important enquiries this intricate branch
OF natural philosophy.
The improvement, of Mr. r. in the engine, can
no. pep oSiuerne as enc OF the greatest umrhs of
even IN this highly inventive age WILL in all proba
erect greater revolution In operative
e'en the rst introduction Of the engine bolton
| aud WAIT =
We heard any comparatiye of The nric
OF Mr rs eng but we aprehemd their original
will De very considerably lover than that others while
they worked with part of the fuel and OCCUPY
only fifth part OF the space required for ofhe
pressure construction The latter point the
Importance, in situations where are limited
for room, rs in the metropolis and other great towns.
The superior economy of engines over all
Others only in the consumption of and water but
ia the weight OF materials also render peculiar
y adapted 10 locomotive engines aud little
doubt that steam carriages will another years
elapsed, become generally adopted among sea m
vessels at present Aud when
the immense savings in the consumption and tonnage of
Goals, of opinion that Mr. Ps invention viii in
ney extend the use oi the steam engine in navigation.
London Museum of Science.