A Novel Arrangement of Motive Power Engine.
Year: 1888

page_text: Date of Application, 9th Aug., 1888
Complete Specification Left, 9th May, 1889-Accepted, 22nd June, 1859
PROVISIONAL SPECIFICATION.
A Novel Arrangement of Motive Power Engine.
I ROBERT FINLAY BELL of Edwin Cottage, Beaumont Road, Leyton, Essex,
Engineer, do hereby declare the nature of my said invention to be as follows:-
This invention relates to a novel arrangement of motive power engine, the cylinder
being of heini-spherical form in part of its section to receive what might be termed a
wabbling piston, the rod of which terminates at each end in a ball one of which fits a
socket or cup in the end plate or cover, the other fitting a similar cup or socket in
a disc forming part of or connected to the main shaft.
The piston has a niche or slot in it for the reception of a blade acting as a valve to
cut off and admit steam or other motive power agent at the requisite periods of the
pistons curvilinear oscillations.
The end plate or cover is preferably conical on the inner face to give clearance for
the piston to act.
The steam or other motive power agent enters the engine through the blade or
valve and exerts a pressure on the working face which also keeps the edge of the
piston in contact with the inside semi spherical face of the cylinder in a steam tight
manner, said steam after exerting its pressure passes to the back of the valve to the
exhaust, this happening at the commencement and termination of the pistons oscillatory
rotation.
By this construction of engine the cylinder takes sufficient steam for the oscillatory
rotation the steam, or other motive power agent, being cut off by a motion given to
the valve which is pivotted in the end of the cylinder or has a motion from the ball or
the socket of the end cover.
Dated this 0th day of tann 1000
H. GARDNER,
166, Fleet Street, London, Agent for the said R. F. Bell.
COMPLETE SPECIFICATION.
A Novel Arrangement of Motive Power Engine.
ROBERT FINLAY BELL of Edwin Cottage, Beaumont Road, Leyton, Essex,
Engineer, do hereby declare the nature of my said 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 relates to a novel arrangement of motive power engine the cylinder
being of hemi-spherical form in part of its section to receive what might be termed a
wabbling piston, the rod of which terminates at one end in a ball which fits a
socket or cup in the end plate or cover the other forming a socket connected to the
main shaft.
The piston has a niche or slot in it for the reception of a blade acting as a valve to
cut off and admit steam or other motive power agent at the requisite periods of the
pistons curvilinear oscillations.
The end plate or cover is preferably conical on the inner face to give clearance for
the piston to act.
The steam or other, motive power agent enters the engine through the blade or
valve and exerts a pressure on the working face which also keeps the edge of the
piston in contact with the inside semi-spherical face of the cylinder in a steam tight
manner said steam after exerting its pressure passes to the back of the valve to the
exhaust, this happening at the commencement and termination of the pistons oscil-
latory motion.

page_text: By this construction of engine the piston takes sufficient steam for producing
the wabbling non rotatable motion to itself and for giving rotary motion to the shaft
which passes through said piston, the steam or other motive power agent being cut off
by a motion given to the valve which is pivotted in the end of the cylinder.
My invention will be understood by reference to the annexed drawings. Figure 1
being a part sectional elevation and Figure 2 a part sectional plan of a single piston
engine.
A is the cylinder. B tho spherical portion in which the wabbling piston C has its
motion. The piston C has a sleeve or socket D through which a portion E of the
main shaft passes, said shaft E having a kink or bend at F like a crank in a piece with
the straight portion of the main shaft G this passing through a stuffing box H and
terminating in a clutch or connection disc, I by which motion can be conveyed in the
usual manner to machinery or apparatus. Opposite to the bend F of the main shaft I
arrange a counter weight, J.
The portion E of the shaft which passes through the sleeve D is again bent at the
centre of oscillation for a short length corresponding to G to pass through another
stuffing box L, the axial line of G. K and the point on which the piston wabbles being
the same.
The centre of motion of the piston C is globular and has free motion in the
socket in the end cover M of the cylinder so that one portion of the surface of
the piston C is always in contact with the corresponding inside surface of the cover 1.
There is a gap at one portion of the wabbling piston and this has fitted in it a valve N
which takes an oscillatory movement in a socket piece P forming part of the cylinder A a
portion of said valve corresponding to the globular formation of the inner end of
the piston Cand also to the spherical portion of B which it fits. This valve has
two passages in it one as the steam inlet which when the piston is moving over
one part of its course uncovers a port for the passage of steam to the face of the
piston against which it acts: said steam as the piston wabbles exerts its pressure
gradually upon different parts of the face of the piston as the spaces present
themselves between the face of the piston and the cylinder end until the comple-
tion of the pistons wabble when the other passage in the valve opens to the
exhaust Q for the escape of the spent steam.
The steam enters the cylinder by the pipe R in which the sleeve D and counter
weight J have their motion and within which the back face of the piston C is
fully exposed whereby the steam exerts an equal pressure all over said back face
which keeps some, yet everchanging part of the pistons frout face in contact with
the face of the end cover L.
In order to regulate the quantity of steam passing through the inlet passage
at S I fit a throttle valve T this being controlled by a rod U passing through a
stuffing box V within which said rod has an oscillatory circular motion corre-
sponding to that of the valve N.
Figures 3 and 4 are part sectional and plan views of an engine in which two
wabbling pistons C. C. are employed upon the same shaft G. K. the shaft being
so shaped at its centre where the two pistons are placed that the exactly opposite
parts of the pistons faces move away from one another while the shaft is rotated
and instead of having two steam inlets R to the two cylinders A, A, I have only
one steam inlet to fill the cylinder, a portion of steam from said cylinder passing
through the valve N to charge the other cylinder a supply of steam being taken
from each cylinder by side openings into the space forming between the two
pistons by their wabbling action and as the steam just entered acts upon the
faces of the two pistons to drive that part of their faces apart the said pistons by
their wabbling motion permit the steam to travel round between the two faces simul-
taneously driving them apart until it reaches the opposite side of the valve N
into the exhaust Q, this being common to both cylinders.
The double wabbling piston engine shown at Figures 3 and 4 have all the other
parts identical with those referred to with reference to Figures 1 and 2 with the
exception of the throttle valve T.

page_text: It will be understood that in this invention the wabbling piston or pistons have
no circular rotative motion but all parts of the face or faces approach to and
recede from one another the shaft alone having a rotation given to it by its
angled portion within the sockets D to which the pistons are firmly attached.
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
1. The arrangement of motive power engine shown at Figures 1 and 2 of the
annexed drawings in which is fitted a piston having a wabbling non-rotative
motion for giving rotatory motion to a shaft passing through the same and through
the cylinder covers as described.
2. The arrangement of Motive Power Engine shown at Figures 3 and 4 of the
annexed drawings in which two wabbling non-rotatable pistons are arranged to
work face to face and operating through their sockets D, also non-rotatable, the
rotatable shaft which passes through both pistons and through the cylinder ends as
described.
ΟΙ
2009.
H. GARDNER,
166, Fleet Street, London, Agent for the said R. F. Bell.