Year: 1886

page_text: I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of 53,
Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent Agents,
do hereby declare the nature of this Invention to be as follows:-
This Invention relates to an improved pump or rotary engine, and consists
essentially in the combination with a rotary cylindrical piston body and with the
cylinder or shell within which it rotates, of spring pistons as hereafter described.
Reference is to be had to the accompanying drawing forming part of this
specification, which represents two examples of the Invention, both being sections
taken through the spring pistons.
The same letters indicate similar parts in both figures.
The cylindrical shell or casing a is furnished with suction and delivery pipes e f.
The casing is also formed with a chamber d in which the piston b is fitted to slide,
said piston being constantly pressed inwards against the cylindrical boss g by a spiral
spring c behind it. The rotating boss g is also furnished with two similar pistons 662
at diametrically opposite points, said pistons being forced outwards by springs c¹ e²
against the periphery of the cylindrical casing or shell. As shown in Figure 2, the
two springs may be combined in one which traverses the boss g and is wound
around a groove in the shaft y, this latter being the preferred arrangement. The
pistons are free, on meeting with resistance, to withdraw within their respective
chambers d d d², this movement being produced by the bevelled form of the outer
faces of the pistons. It will be readily understood that the boss g rotating around or
with the shaft y, carries with it the two pistons b¹ 62, thereby producing a suction in
LD
071

page_text: the pipe e and at same time delivering the liquid (previously drawn in) through the
pipe f. The piston 6 forms a movable abutment and permits of the passage of the
pistons, the pistons on meeting one another retracting in opposite directions.
I would have it understood that I do not limit myself to the described arrangement,
but may modify the pump as regards the number of the pistons used and also in other
respects as may be necessary.
In applying the pump as a rotary engine working with compressed air, water under
pressure, or steam, the action of the pistons is similar, e being the induction, and f the
eduction pipe.
A. MELVILLE CLARK.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of 53,
Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent Agents,
do hereby declare the nature of this Invention (a communication to me from abroad
by Louis Neubur of 36 Boulevard St. Marcel, Paris, France 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 an improved pump or rotary engine, and consists
essentially in the combination with a rotary cylindrical piston body and with the
cylinder or shell within which it rotates, of spring pistons as hereafter described.
Reference is to be had to the drawing accompanying my provisional specification
which represents two examples of the invention, both being sections taken through the
spring pistons.
The same letters of reference indicate similar parts in both figures.
The cylindrical shell or casing a is furnished with suction and delivery pipes e f.
The casing is also formed with a chamber d in which the piston 6 is fitted to slide,
said piston being constantly pressed inwards against the cylindrical rotating boss g by
a spiral spring c behind it. The boss g is also furnished with two similar pistons 6' f²
at diametrically opposite points, said pistons being forced outwards by springs c¹ c
against the periphery of the cylindrical casing or shell. As shown in figure 2, the
two springs ec may be combined in one, which traverses the boss g and is wound
around a groove in the shaft y, this latte being the preferred arrangement. The
pistons 6 6 62 are free, on meeting with resistance, to withdraw within their respective
chambers d d d2, this movement being produced by the bevelled form of the outer
faces of the pistons. It will be readily understood that the boss g rotating around or
with the shaft y, carries with it the two pistons 62, thereby producing a suction in
the pipe e and at same time delivering the liquid (previously drawn in) through the
pipe f. The piston b forms a movable abutment and permits of the passage of the
pistons 62, the pistons on meeting one another retracting in opposite directions.
I would have it understood that I do not limit myself to the described arrangement
but may modify the pump as regards the number of the pistons used and also in other
respects as may be necessary.
In applying the pump as a rotary engine working with compressed air, water under
pressure, or steam, the action of the pistons is similar, e being the induction, and f
the eduction dide.

page_text: Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed, we declare that what we claim is-
A rotary pump or engine consisting essentially in the combination with a rotary
cylindrical piston body and with the cylinder or shell within which it rotates of spring
pistons and abutment having inclined outer faces, all substantially as herein before
described and illustrated in the accompanying drawings.