IMPROVEMENTS IN STEAM PUMPING ENGINES
Year: 1884

page_text: I GEORGE THORNLEY, Rangemore Street, Burton-on-Trent, Engineer, do hereby
declare the nature of my said invention for IMPROVEMENTS IN STEAM PUMPING
ENGINES, to be as follows:-
.
This invention has for its object the improvement in the connection between the
steam-cylinder and water-cylinder of steam pumping engines, having a rotary
motion; the link connecting the piston rod of the steam cylinder, & the bucket rod
of the water-cylinder, being made in such a way that the connecting rod and
crank shall work inside it. One mode of carrying out this invention' is to make
the aforesaid connecting link with suitable provision at one end, to receive tho
piston rod of the steam cylinder, and also a joint and pin for the end of connecting
rod, and at the other end to receive the bucket rod of water-cylinder; the sides of.
the connecting link are made sufficiently wide apart to allow the crank to work.
between them, and each side is also made with a slot or opening, of sufficient
length, to allow a lateral motion, without coming in contact with the crank shaft.
Another mode of carrying out this invention is to make the aforesaid connecting
link with the ends as described above, but with one side to work above and the
other side, below the crank shaft.

page_text: I GEORGE THORNLEY of Rangemore Street Burton on Trent do hereby declare
the nature of my invention for "IMPROVEMENTS IN STEAM PUMPING ENGINES"
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This Invention has for its object to provide an improved connection between the
piston of the steam.cylinder and the pump piston or bucket rod of steam pumping
engines, having a rotary crank shaft, whereby great compactness is obtained.
According to my Invention I provide a link or loop for connecting the piston' rod
of the steam cylinder to the bucket rod of the pump, made in such a way that the
connecting rod and crank can work inside the loop. This connecting link or loop
is provided with suitable means at one end to receive the piston rod of the steam
cylinder and also a joint pin for the end of the connecting rod, and at the other end
to receive the bucket rod of the pump. The sides of this connecting link are
made sufficiently wide apart to allow the crank and connecting rod to work between
them and each side or arm of the link or loop may be.made with a slot or opening
of sufficient length to allow of the longitudinal motion thereof without coming in
contact with the crank shaft. Or the link may be arranged to work with one of
its sides or arms above and the other side or arm below the crank shaft.
Figures 1 and 2 of the accompanying drawings represent respectively a side
elevation and a plan of a steam pumping engine provided with an improved
.connection or coupling link constructed and arranged according to my invention.
Figure 3 is a detached view of the coupling shewing the mode of connecting
thereto the steam piston rod, the pump rod, and the.connecting rod for working
the crank shaft.
Figures 4 and 5 are respectively an end view of the steam engine, and a
transverse section through the bearings of the crank shaft.
The steam cylinder A and the pump cylinder' B aro carried respectively on the
opposite ends of the bed C in axial line with each other, the steam cylinder being
provided with the ordinary steam chest containing a slide valve operated from the
crank shaft D by the rod E in the usual manner.
The piston rod F and the pump rod G are connected together at their outer ends
by the coupling link H which is made according to my Invention with two sides
or arms hh arranged at suitable distance apart to admit of the crank I and
connecting rod K working between them. These sides or arms h h¹ together with
the ends which connect them together form a loop or coupling link one end i of
which is connected to the piston rod F and the opposite end ¹ is connected to the
pump rod E so as to form therewith substantially one continuous rigid rod with an
opening in the middle. Within this loop one end of the connecting rod K is
hinged as shewn at k its other end being connected to the crank K in the usual
way and in order to admit of the longitudinal motion of the coupling when the
pump is at work one of the sides or arms k of the coupling is placed on top or on
one side of the crank shaft and the other arm h¹ of the coupling is placed beneath
or on the oppsite side of the crank shaft.

page_text: Or the coupling may be provided with four arms arranged two on each side of
the crank one below and one above the crank shaft. Or the sides of the coupling
may be each provided with a slot or opening therein for the crank shaft, to work
in, such openings being of sufficient length to admit of the coupling passing along
the crank shaft when the pump is at work. By connecting the piston rod and the
pump rods together by means of a coupling constructed as herein before describod
increased strength and compactness are obtained.
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
First. In steam pumping engines having a rotary crank shaft, coupling the
steam piston rod to the pump rod by means of a link or loop inside which the
connecting rod and crank, is arranged to work substantially as hereinbefore
described and illustrated by my drawings.
-
Second. In steam pumping engines having a rotating crank shaft connecting
the steam piston rod to the pump rod by means of a coupling consisting of a loop
or link the arms or sides of which are arranged on opposite sides of the crank shaft
substantially as and for the purpose herein before described and illustrated by my
drawings.
Third. The general construction and arrangement of steam pumping ongines
as hereinbefore described and illustrated by my drawings.