Year: 1895

page_text: Date of Application, 9th Apr., 1895
Complete Specification Left, -2nd Jan., 1896-Accepted, 8th Feb., 1896
ARNOLD TOMKINSON 66 Carlyle Road Manor Park London E. Engineer's
Pattern Maker do hereby declare the nature of this invention to be as follows:-
A circular cylinder with one or more radial valve chambers & valves on its
circumference.
A piston block less in diameter than cylinder having one or more projections
reaching to diameter of cylinder to revolve centrally in cylinder.
The valve chamber is arranged so that the centre of chamber to centre of
cylinder is rather less than radi of cylinder and valvé chamber so that valve
chamber cuts into cylinder.
The valve has circular faces.
Passages are formed so that when it oscillates it opens and closes the port.
On one side it is made to radius of cylinder. It can be worked mechanically
or automatic.
A. TOMKINSON. :
I, ARNOLD TOMKINSON of 66 Carlyle Road, Manor Park, London, Engineer,
do hereby declare the nature of this invention and in what manner the same is to.
be perforined, to be particularly described and ascertained in and by the following
statement:
My invention relates to reversible motors or engines worked by steam or other
suitable power such as compressed air; and the like; it also relates to pumps, both
the motors or engines and pumps being of the rotary type..
The object of the invention is to make efficient motors, engines or pumps with´
few working parts.
For this purpose a circular cylinder is made with one or more radial valve
chambers and valves on its circumference, the valve chambers being arranged so
that the circumference of same cuts into the circumference of the cylinders, as
shown in the accompanying drawings.
A piston block of less diameter than the cylinder having one or more projecting
parts reaching to the circumference of the cylinder is centrally fitted to revolve
in the cylinder.
Inlet and outlet ways are arranged in suitable positions in the motor or pump
and act alternately in either capacity.
The valve is constructed with arms, flaps or wings of suitable length and is 50
arranged as to open the port and close the exhaust as required when the motor or
pump is working.
The valve may be arranged to work either mechanically or automatically and is
balanced to take off all friction from the piston block.

page_text: I will now describe the invention with reference to the accompanying drawings
in which,
Fig. 1 shows a vertical section of the engine as a motor or pump.
Fig. 2 shows a transverse section of Fig. 1.
A, is the cylinder in which the piston B rotates.
B, is the piston which is eccentric or cam-shaped as shown, of which one
projecting part B', fits close to the side of the cylinder A and this is rendered
steam tight by packing block C.
D, is the central shaft rotated by piston B.
E, is the valve chamber.
F, is the oscillating valve, the lower part F', of which is curved to the same
radius as the cylinder A, and the two ends J, J, of which are extended laterally
so as to form two bearing faces to cut off or open the steam inlets L, M.
The upper face G, of the valve is also curved to fit the projecting blocks H, H,
between which is a packing block H¹.
I, is the shaft on which the valve F, is mounted.
J, J, are projecting wings of the valve F.
K, K, are steam or air spaces or chambers in the valve F.
L, is the steam inlet and M the exhaust or outlet.
N, N, are stuffing boxes and glands on the shafts D, I.
In the foregoing I have described my invention when made as a motor or
engine.
If intended for use as a pump the parts and fittings are the same.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
In a rotary engine or pump the combination of the special balanced and
reversible valve F, with its spaces K, K, the piston B, cylinder A and ports L, M,
as herein described and set forth.
Dated this 30th day of December 1895.
תיזחומתת
S. S. BROMHEAD,
97 Newgate Street, E.C., Patent Agent.