The Liverpool Standard and General Commercial Advertiser.
Liverpool, Merseyside, England, 1841-09-24 00:00:00

and attention, need
2dly. Economy,

and the expens
land engines.

As .the e _
the saving is 6

vile consumes much less steam than others,
to the saving from friction and
the other causes of loss of power already alluded to, to
which may be added, as gain, the electric fluid in expand-
ing• and increasing the mechanical force of the steam after
its transmission from the boiler. The quantity of steam

actually u;
required to
tion of the ,

r words, the quantity of coals
nt steam for the continuous ac-
found in every instance to be

equivalent to u
pressure pistol

by comparisonwith the best high
id in some cases were great care
„veil to the management of the fur-
:en nearly one-half. When coal is
dear, this a most important consideration, and one which
cannot fail to have weight and influence with the public. It
can be shown that the amount of saving effected in various
ways by the rotatory engine described, compared with a pis-
ton engine of equal power, would, in three years, be equiva-
lent to the first cost of engine boilers and erections.

and attention have
nace, the saving 1

From the cornpactn-et;s of the engine, it occupies but little
space ; so that a very small building will be sufficient to con-
tain it. Slight foundations only being needful, as the weight
of the machinery is trifling, a considerable portion of the
expense hitherto entailed in erecting engines may be avoided,

and enzin

,Cl cheaper

3dly. In first cost. Little need be said under this head.
It will be sufficent generally to state, that taking in consider-
ation the cost of engines, boilers, foundations, and erections
—the saving is so great in comparison with engines on the
old principle, as to command for this invention the most de-
cided preference over them all.

In its easy appliCability to any work where steam

power is require

For portabili

this invention of Mr. Craig's appears pre-
extreme simplicity will prevent its
shall conclude this notice with a
;ine, drawings of which may be

ory Engine consists of a fiat feather-
rtically, and which is worked in the

—The arm is bored hollow nearly to its
a small aperture, or nozzle, at each end,
. The axis on which, it is fixed, and with

also hollow on one side to the centre.
xis the steam is admitted direct from
.o the arm, and, having no other means
the apertures or nozzles at the end of
within which the arm works, causing
by the pressure of the steam, to rotate
n. The steam, after it issues from the
the case, from which it blows off gra-
n ejection-pipe, into the chimney or
with the axis with which the arm re-
liey or drum ; over this pulley (in the
) is passed a belt or band communicat-
above, the diameter of which is in-
the speed according to the degree re-
kr work, and which will be in the ratio
he great velocity and force of rotation
tcates a very swift and powerful motion
ch it is connected : from this drum the
Ll applied, and the " useful effect" of
inuiences. It has no cylinder, beam,
liel-motion apparatus, condenser, air-
ire mechanism, liable to derangement
ut one moving part, and that so simple
i:aue almost perfect freedom from wear
.oue produces any friction, and that so
be computable. The axis works in a
which is lubricated bp the steam, no

September, 1811. Allen and Co.,

rly conducted periodical—

-way—appears to progress
ho have any connexion with

ro tho:

inch interesting information ; to

is a variety of valuable matter, and
reading. " Slight Circumstances"
s much research. The whole of this

Bering. The poem entitled " Plea-
clever. " The Bench, the Bar, and
is a good paper. The " Memoirs of

if an Assistant Surgeon" are
fence. " Asiatic Intelligence"

is going forward at present in

le labour is exhibited in compiling
re recommend to such of our readers