Year: 1887

page_text: Date of Application, 7th Sept.,
Complete Left, 16th May, 1888
Complete Accepted, 22nd June,
188%
1888
I, WILLIAM ANTON GOTTLIEB SCHÖNHEYDER of No. 81 St. Stephens Avenue,
Shepherds Bush in the County of Middlesex, Engineer do hereby declare the nature
of this invention to be as follows:-
My invention relates to a fluid pressure engine applicable as a meter for water or
other liquid, which I construct in the following manner. Within a casing that is
tightly closed I fit three cylinders each capable of sliding to and fro on guides in a
line transverse to its axis. Each cylinder which is open in front is fitted with a piston,
and all three of the pistons are rigidly attached by their rods to a plate which is free
to slide longitudinally and transversely on a facing fixed in the centre of the casing.
Through this facing there are ports or passages one in the centre acting as an eduction
port and three arranged around it acting as induction ports. Each piston rod is
tubular having in it a passage which has a lateral opening or port on the face of the
central plate to which the pistons are attached. This central plate engages with a
crank pin on a shaft or spindle passing through the side of the casing and it may also
have a circular hollow receiving a roller projecting down into it from the side of the
casing. Fluid under pressure being admitted into the casing presses each piston
inwards when its port coincides with the eduction port, but the pressure on each side
of each piston becomes balanced when its port coincides with one of the induction
ports. By this alternation of pressure the three pistons are caused to reciprocate in
their respective cylinders while the cylinders themselves reciprocate laterally, and the
plate to which the pistons are attached works the crank and by moving over the ports
alternates the induction and eduction to each cylinder successively. The crank shaft
or spindle may work machinery or a counter.
D
ր
1007
ABEL & IMRAY,
Agents for the Applicant.

page_text: 1, WILLIAM ANTON GOTTLIEB SCHÖNHEYDER of No. 81 St. Stephens Avenue,
Shepherds Bush, in the County of Middlesex, 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:-
My invention relates to a fluid pressure engine, applicable as a meter for water
or other liquid, which I construct as I will describe referring to the accompanying
drawings.
Fig. 1 is a plan with the cover of the casing removed, part being shewn in section.
Fig. 2 is a section on the line X X and partly on Y Y of Fig. 1, shewing the
apparatus arranged to operate as a meter of water or other liquid.
Fig. 3 is a section of the upper part of the casing shewing the modification to adapt
the apparatus as a fluid pressure engine.
Fig. 4 is a transverse section of one of the cylinders. A is a casing made in two
parts bolted together so as to be tightly closed. The liquid that is to be measured or
that is to operate as the working fluid of the engine enters the casing by a pipe a.
The liquid after working the meter or engine is discharged by the pipe a. When the
apparatus is used as a meter, a space a³ is provided in the cover of the casing to hold
counter mechanism of any suitable kind, with its dials visible through a glass a*.
When the apparatus is used as an engine the shaft e¹ passes through a stuffing box in
the cover as shewn in Fig. 3.
Within the casing there are three cylinders (one of them not shewn in Fig. 1)
each made with two side wings e which are fixed so as to slide along the flat faces of
guides, each cylinder being thus free to move to and fro transversely to its axis.
If desired, antifriction rollers may be substituted for the flat guides c¹ or may be
interposed between the faces of the wings c and the guides c¹.
Each of the cylinders C is fitted with a packed piston P through the stem of which
there is a passage p opening at one end into the cylinder and having at the other end
a lateral mouth or port p'.
The piston has a stem p² extending from it into a bore at the bottom of the
cylinder, to serve as a guide for the piston, and through this stem is bored a hole p²
with a lateral mouth to let liquid freely enter and leave the space in the bore beyond
the end of the stem p³. In the middle of the casing is fixed a facing F having through
its centre a triangularly shaped hole or port of communicating with the discharge
pipe a'.
There are three recesses f¹ formed in the edge of the facing F, each with a mouth
or port f, nearly rectangular, presenting itself at the upper surface of the facing.
The three pistons P are rigidly connected to a central boss D which bears upon and
is free to slide along the upper surface of the facing F.
When the apparatus is to be used as a meter, as shewn in
is formed in the upper side of the boss D, and within this
Fig. 2, a circular cavity
cavity a roller E of less

page_text: diameter than the cavity is fitted to revolve on a pin e projecting down from the cover
of the casing. A spindle e¹ having at its lower end a crank pin e engaged in a hole
of the boss D, extends centrally up the pin e into the space as to work the counter.
When the apparatus is to be used as an engine, the cavity in the boss D and the
roller E are dispensed with, and a spindle e¹ having a crank e engaged in a hole of
the boss D extends through a stuffing box to the outside of the casing, to operate as a
driving shaft.
Whether the apparatus be used as a meter or as an engine, the action of the parts
is the same, that is to say :-
Fluid under pressure being supplied by the pipe a, to the interior of the casing A,
while there is escape for fluid by the pipe a², the fluid in the casing presses on all the
pistons P tending to force them into their respective cylinders, while it also presses
all the wings c of the cylinders up against the guides c¹ and presses the central boss D
down on the facing F. The boss D can move to and fro over the face F to a certain
extent limited by the throw of the crank e or by the excess of the diameter of the
cavity in D above that of the roller E, and it can also move to and fro transversely
to the same extent. In this compound movement of the boss D, each of the piston
ports p¹ presents itself alternately to one of the ingress ports of the facing and to
the central egress port f, and this alternation occurs in respect of each of the pistons
in regular succession, and these are consoquently made to reciprocate in such order
as to give the boss D its required movement. The crank e being thus caused to revolve
its spindle e gives motion to the gearing of the counter or to such external machinery
as may be connected to it. From the construction described it will be seen that the
parts require very little labour in fitting, and that by removing the cover of the casing
they can all be readily lifted out for cleansing or repairs, and can at once be dropped
again into their respective places.
Obviously by a slight modification of forin the relative position of each cylinder C
and piston P might be inverted, that is to say the three pistons might be made with
side wings to bear against guides such as c¹ while the cylinders might be attached to
the central boss D.
Obviously also if the shaft e¹ were caused to revolve by extraneous power applied
to it, the apparatus would operate as a pump drawing in fluid by the pipe a and
expelling it by the pipe a².
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A fluid pressure engine applicable as a liquid meter, having within a tight casing
three cylinders free to slide to and fro transversely, and their three pistons rigidly
connected to a central boss sliding to an extent determined by a crank or its equivalent
over a fixed facing, the said pistons, boss and facing having passages and ports whereby
the interior of the cylinders are successively and alternately put in communication
with supply ports and with a discharge port, substantially as herein described.
11
1
CA 1000
ABEL & IMRAY,
Agents for the Applicant.