Rotary Motor.
Year: 1890

page_text: Date of Application, 3rd July, 1890
Complete Specification Left, 3rd Apr., 1891-Accepted, 9th May, 1891
PROVISIONAL SPECIFICATION.
A Rotary Motor.
CHARLES STUART, Bletchley Bucks Mechanical Engineer do hereby declare
the nature of this invention to be as follows:-
Firstly. A specially constructed wheel made to receive and have firmly fixed to
either the outside or inside periphery of its rim, a flexible tube composed of india
rubber, leather, or any suitable material, into the interior of which, may be
admitted steam, compressed air, or other gases, or fluids, and by means of a
pressure roller or its equivalent arranged in connection with said wheel to roll over
the outer surface of said flexible tube. Such fluids is caused to impinge or press
against any particular point or points upon the periphery of said wheel and alsó
upon said pressure roller producing rotary motive power thereby.
The pressure roller may be forced out of the centre of gravity of said wheel
and thus its own weight will also tend to give rotary motion to said wheel,
producing thereby the double advantage of pressure and weight combined in
turning said wheel.
Dated this Third day of Iul 1900
COMPLETE SPECIFICATION.
A Rotary Motor.
I, CHARLES STUART, of Bletchley, in the County of Buckingham, Mechanical
Engineer, 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 relates to a new kind of rotary motor.
In carrying out the said invention I provide a wheel constructed so as to receive
and have firmly fixed to either the outside or inside of its rim a tube composed
of india-rubber, leather or other suitable flexible material, into the interior of
which tube steam, compressed air, or other motive fluid can be admitted. I also
provide a pressure roller or its equivalent arranged in connection with the said
wheel so as to roll upon and compress the said flexible tube at one part. By
this arrangement the pressure of the motive fluid will be exerted against the
portion of the tube compressed by the roller, the resistance of which will cause the
wheel to revolve.
The pressure-roller may be free or arranged to turn upon a centre located
vertically beneath the centre of the wheel. In the former case the pressure of the
motive fluid will force the roller to a point in advance of the centre of the wheel, so
that the weight of the roller will also tend to assist the rotary motion of the said
wheel, producing thereby the double advantage of pressure and weight combined in
rotating the wheel.
:-
To enable my invention to be fully understood I will describe how it can be
carried into practice by reference to the accompanying drawing, in which:
Figure 1 is an end elevation, partly in section, of a rotary motor constructed
according to my invention:
Figure 2 is a section on the line a x of Figure 1; and,
Figure 3 is a section on the line
of Figure 1.
Similar reference letters indicate similar parts throughout the drawing.
a is the wheel, hereinbefore described which is attached to and serves to revolve a
shaft journaled in bearings, one of which is shewn at c,. Figure 2. d is the
flexible tube, which, as shewn in the drawing, is arranged inside the rim e of the

page_text: wheel, a ring of india-rubber or other flexible material being advantageously
employed between the tube d and the inside of the rim e to serve as a cushion or
bed and for the attachment of the tube d. fis the pressure-roller which bears upon
and compresses a part of the tube d.
a is a plate which is bolted on one side of the wheel a so as to enclose the
roller f.
The ends g, g¹ of the tube d communicate with passages h, h¹ containing valves i, i
respectively, a cock j being provided, the plug of which can be operated by a
hand-lever k so as to allow the motive fluid to pass from a stationary supply-pipel
through an opening 2 in the plug to either of the passages h, h¹ and consequently to
the tube & through either of its ends so as to drive the wheel in either direction, as
desired. The valves i, are normally closed on seatings m, m by springs but,
when the motive fluid is admitted to either of the passages h, h', its pressure will
cause the valve in connection with such passage to be pressed against another
'seating a so as to shut off communication with the atmosphere through an exhaust
opening o which I provide in connection with each valve."
The plug of the cock j has a projection j³ which comes against stops *, * on
the casing of the cock, so as to prevent the said plug from being moved beyond
either of its two positions. The plug j¹ of the cock j revolves with the wheel a
in a bearing attached to the pipe 1, the said bearing being formed with a cavity (2
surrounding the plug j' so that the motive fluid has access to the opening in the
said plug whatever the position of the said opening may be.
The operation of the motor is as follows, that is to say, assume the parts to be in
the position shewn in the drawing, the motive fluid will then pass from the supply-
pipe, through the cock j and the passage h, past the valve i (which will be pressed
against its seat n) into that portion of the tubed between its end g and the portion p
compressed by the roller f. As, however, the position of the roller is practically
unalterable it follows that, as the motive fluid continues to flow through the
passage h, the wheel will move in the direction of the arrow 1, Figure 1, the fluid
in the other portion of the tube being pressed out through the exhaust opening o past
the valve i¹.
By moving the handle of the cock j so as to allow the motive fluid to pass
through the passage ', valve i¹ and into that portion of the tube d between its end y¹
and the portion p the operation of the motor will be in the opposite direction to
that hereinbefore described.
Instead of the roller f being arranged to run freely in the wheel a as hereinbefore
described, it can be arranged to revolve on a pin or centre sliding in a vertical
groove in the bracket of the bearing c; but in this case the weight of the roller
would not assist in the actuation of the wheel a.
Although I have shewn my invention applied as a stationary motor it will be
understood that it can be applied for the purposes of locomotion. For example,
I can apply it to the wheels of tram-cars and other vehicles, one or more of the
wheels of the said tram-car or other vehicle being arranged as the wheel a.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is
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1. A rotary motor comprising a wheel carrying a flexible tube upon which runs
a roller, the ends of the said tube being connected with suitable inlet and exhaust
valves, substantially as described.
2. The manufacture and use of the improved rotary motor herein before described
and illustrated in the accompanying drawing.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.