IMPROVE- MENTS IN OBTAINING AND APPLYING MOTIVE POWER
Year: 1864

page_text: PROVISIONAL SPECIFICATION left by Bryan l'Anson Bromwich at the
Office of the Commissioners of Patents, with his Petition, on the
5th October 1864.
I, BRYAN I'ANSON, Bromwich, of Birmingham,. in the County of Warwick,
Gentleman, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN OBTAINING AND APPLYING MOTIVE POWER," to be as follows, that is to
say:-
This Invention relates to certain improvements upon a former Invention of.
mine for the same purpose, and for which Her Majesty's Royal Letters Patent.
bearing date the. 28th January, A.D. 1863, No. 261, have been granted to
me, and the object of the present Invention is to remedy the defects arising
from leakage in the parts of the machine.
In order to make this more easily understood; I shall describe the machine
generally. I provide a chamber or reservoir to contain compressed air. (which,
is the power I employ) and in connection with such chamber I have a series
of hollow rings forming engines, which receive the air each in turn as it issues
from the reservoir, and by which they are actuated. These engines are all
connected with one common shaft, thus concentrating the power of the entire
series.
I propose to carry this out in the following way :-I form a series of hollow-
rings, to which are fitted air-tight covers, free to rotate on their seats; and
this point has hitherto proved an impracticability which it is one of the objects

page_text: of this present Invention to remedy. In forming these hollow rings I make
them according to this section transversely.
a
(a) is the sides of the rings; (b), the bottom plate
forming grooves as at (c), in which are placed rings of
inflated vulcanized rubber tubing or other springing
material, above which is a loose smooth ring of steel
acting as a running way for the moving cover of which
(d), are the sides, and-(e)-the top.; or the grooves (c) may be filled with oil
or other lubricant that will prevent the escape of air. To the inner face of
each of the covers (e) a piston is attached fitting the case, and each case is
provided with a supply and discharge pipe, between which pipes a valve is
This
mounted, maintained in position by a spring or other suitable means.
valve acts as a stop to the admitted air, but yields to the pressure of the piston
allowing it to pass in its rotary course. The series of engines are mounted
one over the other in suitable fixed framing, and around a vertical shaft con-
centric therewith. From this shaft project arms, the extremities of which are
attached to the rotating covers of the engines. As therefore the engines are
driven they severally exert their power in driving the common shaft, from
The engines
which rotary motion may be taken off by any suitable means.
are connected by coupling tubes, the highest engine of the series being also
connected by a supply pipe with the air chamber; this supply pipe is double,
consisting of one tube within the other to ensure carrying back the spent air,
together with air from the reservoir ascending outside the inner pipe to the
piston to secure the full power of the air against the piston. The air thus
passes first to the highest engine, whence having exerted its force upon the
piston it passes to the next engine, and so on through the series until it issues
from the lowest, when it enters an elastic coiled pipe connected to the air
chamber or reservoir. A pressing roller driven by the central shaft traverses
this coiled pipe, expelling the air therefrom and into the supply pipe outside
the inner tube. Any available power may be employed to charge the air
chamber or reservoir, at starting.