Year: 1888

page_text: :-1
Date of Application, 27th July, 1888
Complete Specification Left, 25th Apr., 1889
Complete Specification Accepted, 1st June, 1889
I, WILLIAM WYNNE, Patent Agent, of 142 Fleet Street, in the County of Middlesex,
do hereby declare the nature of this invention, a communication to me from abroad by
Joseph Beduwé, of Liège in the Kingdom of Belgium, Engineer, to be as follows:-
The object of this invention is a new or improved steam- or water-motor in which
the sliding valve for the distribution of the steam is actuated direct by the piston.
The improved motor essentially consists of two cylinders joined to one another.
Each of the piston rods actuates the sliding valve effecting the distribution in the
other cylinder.
The water or steam fed through the inlet pipe into the space comprised between the
four pistons enters through a suitable orifice in one piston and flows behind the piston
on the same side of the other cylinder. The front of the other piston of the latter
being at discharge, these two pistons are actuated. About the end of the stroke
their rod takes along one of the sliding valves which places itself so as to open a
suitably provided orifice and to set the other valve in communication with the discharge
through another orifice. Thereby the pistons of the other cylinder are actuated and
perform the same process as the former and so on.
When the motor is driven by steam the canals have a particular arrangement.
Instead of abutting against the bottom of the cylinder, they open at some distance
from the same; thereby the piston opens in its stroke the steam-outlet and closes the
discharge. Consequently a certain amount of steam is compressed behind the piston.
Thus the shock of the latter against the cover is obviated and steam is economised
through the compression.
To allow the starting of a piston, which thus covers the steam-inlet-port a small
valve is provided at the bottom of each cylinder opening internally and communicating
on the other side with the distributing canal.
The steam when admitted into the latter flows through the valve into the cylinder
till the piston has opened the steam inlet. The piston initiates therefore its stroke
slowly and without a shock and assumes the normal velocity only after having per-
formed part of the stroke.

page_text: I, WILLIAM WYNNE, Patent Agent, of 142 Fleet Street, in the City of London, do
hereby declare the nature of this invention, a communication to me from abroad by
Joseph Beduwé of Liège, in the Kingdom of Belgium, Engineer, 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 or improved steam- or fluid pressure-motor, in which
the sliding valve is actuated direct by the piston rod, and the stroke of the piston com-
mences slowly and without shock.
Referring to the accompanying drawings, Sheets I to IV,
Fig. 1 is a longitudinal vertical section of the improved motor along line Y Z
Fig. 2.
Fig. 2 a longitudinal horizontal section of the steam cylinder and a plan of the
pump.
Fig. 3 a cross section of the pump.
Fig. a cross section of the steam cylinder.
Fig. a longitudinal vertical section, of a modification, along line Y Z, Fig. 6.
Fig. 6 a plan of said modification.
Fig. 7 a cross section of the pump, Fig. 6.
Fig. 8 a cross section along line W X Fig. 5.
The improved motor has two laterally joined cylinders, and each of the piston rods
actuates the sliding valve effecting the distribution in the other cylinder.
In the motor represented by Figs. 1 to 4, the steam enters through the port A into
the chamber formed in the two cylinders D D1 by the four pistons B, B, and C³.
Said chamber contains the two slide valves E E¹, supplying steam to the pistons()
and (, through the canals H, H¹, J and J¹. The slides therefore place alternately
the rear part of the pistons in communication with the steam chamber and with the
discharge K K¹.
The motor works as follows: In the position indicated in the drawing, the pistons ()()
have nearly reached the end of their stroke, while the pistons B B are about
the middle of their stroke. The latter, in advancing, take along the slide E which
opens the steam inlet port F and places the port G in communication with the
discharge K thereby the piston receives the steam, while C is in communication
with the discharge pipe, and both proceed from the right to the left. During this
time, the pistons B B continue their course from the left to the right and arrive at
the end of their stroke when the pistons CC have arrived about the middle of their
stroke. The slide El joining the pistons (opens the inlet port J and places H in
communication with the discharge pipe K'. Thereby the pistons B B' proceed from
the right to the left. and the engine continues to work as described above.
Before arriving at the end of their stroke, the four pistons close their inlet ports H'
GJ and E and. while continuing their stroke, thus compress part of the steam
enclosed, between their outer surfaces and the covers. Owing to this compression
retarding their progress at the end of the stroke, any shock is absolutely avoided.

page_text: To allow of the return of the pistons, which thus cover the steam inlet, each cylinder
has at the bottom a small valve I opening inwardly and communicating on the other
side with the distribution canal. Through this arrangement, the steam, when admitted
in the canal, passes through the valve into the cylinder, till the piston has opened the
steam inlet port.
The pistons therefore commence their stroke slowly and without shock and assume
their normal speed only after having performed a certain part of the stroke.
In the motor represented by Figs. 5 to 8, the steam enters through the port A into
the steam chamber situated above the two cylinders D D¹. In this chamber, the two
slide valves E E¹ are actuated, E supplying steam to the piston of the cylinder D¹
through the canals F, F, G and G, and E₁ to the piston of the cylinder D through the
canals H, H', J, and J. While the engine is working, said valves place alternately
the pistons of the cylinders D and D' in communication with the steam chamber.
The engine works as follows: As indicated in the drawing, the piston of the
cylinder D¹ is nearly at the end of its right hand stroke, while that of the cylinder D
has arrived at the end of its left hand stroke. While proceeding to the right, the
piston D¹ takes along the slide E by means of the muff B, lever C and double joint, as
shewn. The slide E¹ opens the steam inlet port H and places the port J at discharge
through K. The steain enters now through the port H into the canal H H¹ and
causes the piston of the cylinder D to move from the right to the left, while the piston
of the cylinder D' terminates its stroke. During its stroke, the piston of the cylinder D
actuates the slide E by the muff M and a similar lever device as that of the piston of
the cylinder D. The slide E opens the port F of the canal T T' and places the port G
at discharge through K. The steam entering through the canal F F' drives the
piston of the cylinder D' from the right to the left, and the above operation is repeated.
The levers C and N are pivoted on the same shaft, fixed in the two supports of the
stays connecting the engine with the pump.
Before arriving at the end of their stroke, the two pistons open their inlet- and
outlet-ports F, G, H' and J' and, while proceeding, compress a certain amount of
steam between their surfaces and the bottoms of the cylinders. This compression
retarding their progress, any shock at the end of the stroke is thus obviated. To
admit of the return of the pistons covering their inlet ports, each cylinder has at the
bottom a small valve I opening inwardly and communicating on the other side with
the distribution canal. By this arrangement, the steam, when admitted in the canal,
passes through said valve into the cylinder, until the piston has opened the steam inlet
port. The pistons therefore commence their stroke slowly and without shock and
assume their normal speed not before having performed part of the stroke.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed, I declare that what I claim is :
A steam- or fluid pressure-motor, in which the sliding valve is actuated direct by
the piston rod, said motor having two laterally joined cylinders and each piston-rod
actuating the sliding valve of the contiguous cylinder substantially as and for the
purpose set forth.