Year: 1894

page_text: Date of Application, 25th Jan., 1894-Accepted, 3rd Mar., 1894
Figs. 7, and 8, shew separate central sectional elevations of the piston C, and
vanes D, D' respectively.
Like letters indicate corresponding parts throughout the drawings.
A, is a cylinder made in two segmental sections e, e and bolted together at the
flanges ff.
B, is the cylinder cover made in one piece and bolted to the face of cylinder.
C, is a piston or cylindrical disc.
The shafts or spindles F, F', are made in one with the piston C, and the
latter is fitted in the cylinder out of centre of same, the bearing 9, for the
shaft F', being made in one with the cylinder cover B; and the bearings J, J',
for the spindle F,-which also form a stuffing box-are made in one with the top
and bottom sections e, e', respectively, of the cylinder.
In fitting the piston C, in the cylinder care is taken that the periphery of
the former shall fit on the bottom of cylinder so as to make a steam tight abutment
at R.
The vanes I, D', are provided with arms or projections H, H, which fit and
work in circular holes H', H' formed in the piston, as shewn in the drawings.
When the piston C, is fitted in place with the parts e, el of the cylinder bolted
together, and the cylinder cover bolted on, the gland K, fitting in the bearing
and stuffing box J, J', renders the whole steamtight.
K', is a fly wheel of approved size.
-
The action of my improved engine is as follows:-
Taking it that the piston is in the position in cylinder shewn on the accompanying
drawings, and that the pipe M, is closed, steam is admitted through the pipe L,
into the cylinder chamber and the pressure of steam upon the vane D', causes the
piston C, to rotate in the direction indicated by the arrows; as the piston revolves
the vane D'-bearing on the inner periphery of the cylinder is pushed back on
the springs E E, towards the centre of the piston thereby consequently, causing the
ID 77

page_text: vane D, to project from the piston and bear on the inner periphery of the cylinder,
thus, at all times, and whatever position the piston is in, the vanes always bear
steamtight on the inner periphery of the cylinder.
When the piston is revolving in the direction shewn by the arrows steam
exhausts at N and P and when the vane D' has passed the exhaust pipe N, the
vane D will be past the steam inlet L, the stean pressure will then be exerted
upon the back of the vane D,-as the steam will be exhausting in front of same
at N-thereby securing the uninterrupted revolution of the piston in the same
direction.
When it is desired to reverse the engine, the pipe N, is closed and steam is
admitted into the cylinder through the pipe P, and the pipes M, and L, will then
be open and act as exhausts.
Suitable cocks or valves will be provided on the pipes L, M, N, and P, to secure
the above named result, viz. :-the reversal-when desired-of the direction of
the steam supply and exhausts, and consequent direction in which the piston will
revolve.
An important feature of my invention consists in making the cylinder A, and
bearings J, J, in two parts, the part J, of bearing being made in one with the
top e, of cylinder, and the part J', of bearing in one with the bottom e' of
cylinder, as hereinbefore stated.
In making and fitting my engine I am thus enabled to place the piston C in
position in the bottom part e, of the cylinder, and by revolving the piston to grind
it down until a perfect steam tight abutment of the piston on the inner periphery
of the cylinder at R, is made, and the top e, of cylinder, and the cover B, may
then be fitted in place, that is after the abutinent is satisfactorily made.
It is obvious I can somewhat modify the construction and arrangement of my
engine without departing from the nature of my invention. For instance, I may
make the outside form of the engine different to that shewn in the accompanying
drawings to suit any position in which I may desire to place it.
I may also instead of making a single cylinder engine, as hereinbefore described,
and illustrated in the accompanying drawings, construct and arrange my improved
engine to work as a compound condensing, or noncondensing engine, or as a high
pressure condensing engine, or as a triple, or quadruple expansion engine.
Two or more engines may be coupled to one line of shafting and steam may
be used at high pressure in one cylinder and then expanded in one or more cylinders
of suitable size, thus any convenient number of cylinders may be connected to
one line of shafting, in which case a stuffing box and gland can be fitted where
the shafting would project through the cover B.
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 :-
The improved rotary engine comprising the annular chamber or cylinder A, the
cover B, the piston C, fitted in and out of centre of the cylinder A, so as to form
a steam tight abutment at R, the vanes D, D', working radially, upon coil
springs E, E, and other devices all constructed and combined substantially as
described with reference to the accompanying drawings and operating as and for the
purpose specified.
Dated this 23rd day of January 1894
TELFORD CHARLES FIELD.
Herbert P. Blake, M.I.N.A.,
70, High Street, Southampton, Agent for the Applicant.