Engine for Locomotives and the like.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
Rotary Engine for Locomotives and the like.
GEORGE WILLIAM BEWICK "Prince's Head York Road Battersea,
London S.W. Manager of the above Public-house, do hereby declare the nature
of this invention to be as follows :-
A wheel A, having a groove B, and being enclosed in a cylindrical case C,
(which has inlet & outlet D, D', and a block E fitting in the groove B,) is caused
to revolve by steam or other pressure against the sliding rods F, F, Fig. 3, which
are forced out against C to fill up B (by the cam arrangement G, by lifting H,
Fig. 4, which is fixed by a square hole to square ends of F, F'. These being
guided by 1, Fig. 5, fixed to the spokes of the wheel,) and being forced back upon Ġ
by springs K, K' so as to clear block E.
L, is a nut to screw.against H, whereby to tighten F, F against C to allow
for wear.
O, O' are stays from C to hold G, which allows the axle to revolve freely in its
centre.
M is the steam-chest for starting, stopping, and reversing the engine. All being
done by one rod.
N is the slide-valve, of any design, shewn directly over D, D', thereby stopping
the engine, & to either start or reverse it simply requires the slide to be drawn out,
or pushed in a little, as the case may be.
Fig. 2, is a section of Fig. 1, through line P, P.
R, R, are steam-tight glands for F, F.
Dated this 19th day of November 1894.
! GEORGE WILLIAM BEWICK, of "Prince's Head," York Road, Battersea,
London, do hereby declare the nature of this invention and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement :-
This invention for improvements in rotary engines for locomotives and the like
has for its object to construct a simple and efficient rotary motor and consists
essentially of a dise wheel having a circumferential groove, of a ring casing within
which the wheel rotates, of sliding pistons carried by the disc wheel and fitting
laterally its groove, of a stationary abutment carried by ring casing and projecting
into and fitting laterally the groove in the disc wheel, of a means for withdrawing
the sliding pistons when passing the stationary abutment and of a steam inlet and
exhaust on opposite sides of the abutinent. The engine can be reversed by a
simple valve reversing the inlet and exhaust.
In the accompanying sheet of illustrative drawings:-Fig. 1 is an elevation of a
rotary engine constructed according to this invention, and Fig. 2 is a horizontal
section of the same.

page_text: The disc wheel a is provided with a groove band is mounted on a shaft c rotating
in suitable bearings. A ring d made in two parts surrounds the groove b so that
an enclosed annular space is formed. The groove b is enlarged on each side of the
ring d to form packing spaces e in which is inserted a soft packing. Rings made
in sections and drawn in by the bolts g serve to compress the packing and springs h
under the nuts of the bolts take up any wear. Pistons i adapted to slide in glands /
in the wheel a dam up the groove b. The ends of the pistons slide in guides m in
the wheel and carry crossbars n having rollers n' at their ends forced by springs o
against fixed cams, carried by the ring d. An abutment r is fixed to the ring d
and fits in the groove b. Passages st lead from the valve box v to the groove bone
on either side of the abutment and a third passage wo leads from the valve box to a
suitable exhaust pipe. By means of an ordinary D valve æ either passage st can
be made the inlet for steam, the other passage being connected through the
D valve a to the exhaust pipe.
The position of the crossbars n can be adjusted by means of the nuts y to
compensate for wear. The upper surface of the cam is depressed or curved so that
when one piston touches the outer surface of the annular space the other piston is
being withdrawn, until at the top, it is able to pass the abutment r. By this means
it is also ensured that one piston shall always be subject to the action of the steam.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is :
1. A rotary motor consisting essentially of a grooved disc, of a ring casing
surrounding the disc, pistons sliding radially on the disc and damming up the
groove in the disc of stationary cams fixed to the ring, and springs forcing the ends
of the pistons against the cams substantially as described.
2. A rotary motor consisting essentially of a grooved disc, of a ring casing
surrounding the disc, sectional packing rings between the disc and casing, spring
bolts taking up the wear of the packing, flat or round pistons sliding radially in
guides on the disc and whose ends are adapted to dam up the groove in the disc, an
abutment projecting from the casing damming up the groove in the disc, stationary
cams having depressions at their top, crossbars with rollers on the ends of the
pistons and springs forcing the rollers against the cams so that the pistons are
forced inwards to pass the abutment on casing, substantially as described.
3. A rotary mɔtor consisting essentially of a grooved disc, of a ring casing
surrounding the disc, sectional packing rings between the disc and casing, spring
bolts taking up the wear of the packing, flat or round pistons sliding radially in
guides on the disc and whose ends are adapted to dam up the groove in the disc,
crossbars on the pistons, of nuts on the ends of the pistons to adjust the position of
the cross bars to allow for wear, an abutment projecting from the casing damming
up the groove in the disc, stationary cams having a depression at their top, rollers
on the ends of the cross-bars, and springs forcing the cross bars with the rollers
against the cams so that the pistons are forced inwards to pass the abutment on
casing, substantially as described.
4. The improvements in rotary motors substantially as described with reference
to the drawing.
Dad thin 11th dose of 1905
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.