Cincinnati daily press. [volume] (Cincinnati [Ohio]) 1860-1862, 1860-07-31

steam ms n Motive Power TO be Replaced
by CASA New Gns Engine Invented In
Paris.
The Paris correspondent of the Boston
TTaUelley sends the following account of the
new invention by a Frcnchman, of gas
engine, which is now exciting considerable
attention in the French metropolis;
/ believe the machine recently invented by
Mons. Denois Ia gentleman quite well known
by his galvano-plastic copies Of alto-reieyo
sculpture and engravingl | mean his gas
engine, which he looks upon as destined to
take the place of the steam engine in a great
many places where motive power is re-
quired, occupies the chief share of the
Academy's attention at this present moment.
This gas engine is a good deal like the steam
engine in its external appearance. There is
the same cylinder, with its piston, the same
fly-wheel, eccentric and slide-boX-but no
boiler and no furnace. II has a gas-meter
and a very small inductive apparatus. There
is a tube leading from the gas-meter, and
conductors leading. from the electrical ap-
paratus to the cylinder, or rather to the
organs of distribution, which Immediately
precede the cylinder,
When the gas enters the slide-box it is,
with large proportion of ordinary air, in
troduced first on one and then on the other
side of the piston, and where IL meets an
electric spark which fires it; the moment this
takes place the aperture through which the
gas enters is closed, 40 that the combustion
takes place in sealed chamber and deter
mines in the mixed gas aud air a force of eX-
pansion which acts Immediately upon the
| surface of the piston. ..
The motion of the slide-boX and electric
| distributor is so arranged that the moments
of introduction, Inflammation and expulsion
| take place in succession and at proper times.
| When the piston has its motion in one direc-
| ton the same phases of the introduction and
| combustion of the gaseous mixture take place
at the other extremity Of the cylinder. You
| see it utilizes and transforms into labor a
portion-but only portiou--of the heat pro-
| duced by the combustion Of the gas which is
the ordinary gas used for lighting the streets.
| When the combustion takes place the heat,
| which is suddenly disengaged by an eXplo-
sion, contained in a rigid chamber, is COM
municuted to all the elastic fluid in the
chamber, which fluid is the motive power
which acts upon the surface Of the piston
and if its expansion could be carried further
all the heat would disappear in the chamber
and the transformation would be complete.
| Unfortunately, before this refrigeration
takes place the fluid has lost its excess Of
elastic force, and it is necessary to force it to
retain q high temperature to enable it to es-
Il cape into the atmosphere, and which high
temperature it carries away with it, thereby
causing an inevitable loss to the machine
The perfection Of this machine consists il
this, that all the heat produced by the com
bustion is really brought into play, which
lis very far from taking place in the stean
engine; but, as in all machines, only a small
portion of the heat developed is used, th
greater part escapes all attempts to transform
II into motive power. This machine is thirt.
per cent more economical than the steam
engine, and it only costs 5000, and can b
used wherever gas is used. | call the atten
ton of your mechanics to il, if they eve
stand in need of small motive power. lti
cheap, it is convenient, and it is free iron
, 4 tiauVtr