An Improved Moter or Prime-mover Actuated by Fluid Pressure.
Year: 1890

page_text: Date of Application, 22nd July, 1890
Complete Specification Left, 22nd Apr., 1891-Accepted, 23rd May, 1891
PROVISIONAL SPECIFICATION.
An Improved Moter or Prime-mover Actuated by Fluid Pressure.
I, WILLIAM JOHN MURGATROYD, of 263, Wakefield Road, Bradford in the
County of York, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to an improved moter or prime-mover particularly
applicable to be driven by hydraulic pressure and its object is to provide a moter
of simple construction comparatively free from working parts.
The said invention is based on the principle that a curved or coiled pipe or tube
when exposed to internal pressure tends to straighten out or uncoil and, if of
suitable material and the pressure is not excessive, to return to its original form
when the pressure is removed. The improvements consist in the application of this
motion as a motive power.
To carry out my invention in a simple manner I employ a curved or coiled pipe
or tube preferably of flattened section and rigidly fixed at one end. The other
end of said pipe is connected by a connecting rod to the crank of a crank shaft
and fly wheel and a valve on the said pipe is operated therefrom so as to admit
water under pressure to said pipe and cut it off alternately each time said crank
shaft is rotated. In operation the said pipe is filled with water, then to start the
moter the water pressure is turned on which expands the pipe and rotating the
crank shaft until the admission valve is closed and an exhaust valve or passage
simultaneously opened which allows the surcharge of water to escape and the pipe
assumes its original form.
Compound pipes may be employed or two or more pipes may be used in the
same moter connected to the same or separate cranks.
A flexible diaphragm may be introduced with one side in contact with the water
or other liquid in the said pipe so that steam or other fluid pressure may be
applied to the other side of said diaphragm to operate the moter.
Or said pipe
may be filled with mercury or other suitable liquid.
Dated this 21st day of July 1890.
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
An Improved Moter or Prime-mover Actuated by Fluid Pressure.
I, WILLIAM JOHN MURGATROYD, of 263, Wakefield Road, Bradford in the
County of York, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to an improved moter or prime-mover particularly
applicable to be driven by hydraulic pressure and its object is to provide a moter
of simple construction comparatively free from working parts.
The said invention is based on the principle that a curved or coiled pipe or tube
when exposed to internal pressure tends to straighten cut or uncoil and, if of
suitable material and the pressure is not excessive, to return to its original form
when the pressure is removed. The improvements consist in the application of
this motion as a motive power.

page_text: To carry out my invention in a simple manner I employ a curved or coiled pipe
or tube preferably of flattened section and rigidly fixed at one end. The other
end of said pipe is connected by a connecting rod to the crank of a crank shaft
and fly wheel and a valve on the said pipe is operated therefrom so as to admit
water under pressure to said pipe and cut it off alternately each time said crank
shaft is rotated. In operation the said pipe is filled with water, then to start the
moter the water pressure is turned on which expands the pipe and rotates the crank
shaft until the admission valve is closed and an exhaust valve or passage simul-
taneously opened which allows the surcharge of water to escape and the pipe
assumes its original form.
To fully describe my invention reference is made to the sheet of drawings
forming a part of this Specification in which similar letters of reference indicate
corresponding parts in cach of the figures.
Figure 1, is a side elevation of a moter constructed in accordance with my
invention.
Figure 2, is a back view of the same, and
Figure 3, is a vertical section at right angles to the crank shaft through the
centre of the crank.
The standards A, A, firmly support the cross piece B to which the curved pipe C,
flattened in section at the curved portion, is rigidly secured by one end in any
convenient manner so that the interior of the tube is permanently connected to the
passage D. The passage D communicates with the valve chest E mounted upon B
and is provided with a cylindrical valve F operated by the arm a mounted on the
valve spindle b and connected to the eccentric d on the crank shaft H by the
eccentric rode and eccentric strap g. The free end I of the pipe C is closed and
is provided with a tap or plug h to enable the whole of the air to be expelled from
the interior of the tube and be replaced by water or other liquid before the moter
The
is put into operation, as it would seriously interfere with the efficiency of the moter
if air or other elastic fluid were allowed to accumulate in the free end I.
free end of the tube I is provided with a lug J to which the connecting rod K is
pivoted and the other end of said rod is mounted on the crank i of the crank
shaft H.
o
The various parts of the above described mechanism are so relatively arranged
that when water under pressure is admitted by the passager and the valve Fis
in the position shown it passes such valve and meeting the water in the pipe C it
creates a pressure therein which tending to straighten such pipe causes its free
end to move away from the shaft H. Through the medium of the connecting
mechanism this motion turns the valve F until the communication between the
passage and the interior of the pipe C is closed and the exhaust passage
opened, this allows the surcharge of water in the pipe to escape and the pipe a
once springs back to its normal position thereby again opening the passage r, and
thus this motion is continuously repeated.
Steady links in mounted on the rocking shaft n and pivoted by their othe
ends to the lug are provided to steady the vibration of the end I of th
pipe.
An air vessel O may be provided into which the water under pressure is fe
before it reaches the passager so as to equalise the pressure.
By forming one or more complete coils in the pipe C the extent of the motio
of the free end may be increased and compound or two or more pipes may be use
in the same moter connected to the same or separate cranks.
A flexible diaphragm may be introduced close to the underside of the valve
with one side in contact with the water or other liquid in the said pipe so th
steam or other fluid pressure may be applied to the other side of said diaphrag
to operate the moter, but I prefer to employ water pressure. Or the said pi
may be filled with mercury or other suitable liquid up to the valve F and stea
or other fluid pressure applied thereto.

page_text: Having now particularly described and ascertained the nature of my sand
tion, and in what manner the same is to be performed, 1 declare what I
claim is:
A moter operated by fluid pressure acting upon the interior of a curved or coiled
nine or pipes, substantially as herein shown and described.
1001
DRACUP & NO
Bradford, Agents.
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