Improvements in and pertaining to Pumps, and in Means of Actuating same.
Year: 1894

page_text: Date of Application, 22nd Feb., 1894
Complete Specification Left, 22nd Nov., 1894-Accepted, 12th Jan., 1895
PROVISIONAL SPECIFICATION.
Improvements in and pertaining to Pumps, and in Means of
Actuating same.
I. OSWALD HAMILTON, of the Undershore, Northfleet, Kent, Chemical
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improved means of actuating plunger and other pumps,
nore especially applicable where variable speeds and discharges are required, as
for instance in pumps for filter presses, or where several pumps are required to be
driven by one belt or shaft, and where it may be requisite to alter or vary
independently, the speeds or discharges of the various pumps.
The invention may be applied to any ordinary force pump, and consists in the
employment of a rocking shaft, which may be actuated or vibrated in any
convenient manner by cranks and rods, or otherwise from an intermediate or
independent source of motion.
Upon this rocking shaft is fitted or formed therewith, a slotted link piece or a
pair of coupled cranks for each pump operated from the same rocking shaft. Such
slotted link piece or pair of coupled cranks carries an adjustable crank pin, to
which is connected the driving end of the connecting rod of the pump, the other
end of which is connected as usual to the crosshead or plunger of the pump
according to the type employed.
The adjustable crank-pin can be moved to and from the centre of the rocking
shaft crank or cranks, by means of a hand-wheel and screw, so that while the pump
is in motion, the stroke can be readily adjusted as to alter the travel of the pump
rod or plunger to any desired extent or so as to stop the pump altogether.
Any number of pumps of similar or different stroke may thus be actuated from
the same rocking shaft by being connected therewith in a like manner.
Dated this 22nd day of February 1894.
COMPLETE SPECIFICATION.
Improvements in and pertaining to Pumps, and in Means of
Actuating same.
I, OSWALD HAMILTON, of the Undershore, Northfleet, Kent, Chemical
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 :-
This invention relates to improved means of actuating plunger and other pumps,
more especially applicable where variable speeds and discharges are required, as for
instance in pumps for filter presses, or where several pumps are required to be
driven by one belt or shaft, and where it may be requisite to alter or vary
independently, the speeds or discharges of the various pumps.
The invention (illustrated by the accompanying drawing wherein Fig. 1 is a
side elevation, Fig. 2 an end elevation, and Fig. 3 is a plan)-may be applied to

page_text: any ordinary force pump a, and consists in the employment of a rocking shaft b,
which may be actuated or vibrated in any convenient manner by cranks or rods or
otherwise from an intermediate or independent source of motion.
Upon this rocking shaft 6 is fitted or formed therewith, a slotted link piece, or
pair of coupled cranks c, for each pump operated from the same rocking shaft.
Such slotted link piece or pair of coupled cranks c, carries an adjustable crank-pin d,
fitted to or formed with, the slide block or blocks e, working in the slotted link
piece or between the coupled cranks c. The driving end of the connecting rod
of the pump a, is connected to the adjustable crank pin d; the other end of the
connecting rod g being connected as usual to the cross-head g' or plunger of the
pump according to the type employed.
9
The adjustable crank-pin d, with the slide block or blocks e, can be moved to
and from the centre of the rocking shaft crank or cranks e, by means of the hand
wheel and the screw i, so that whilst the pump is in motion, the stroke can be
readily adjusted as to alter the travel of the pump rod or plunger to any desired
extent, or so as to stop the pump altogether.
The rocking shaft 6 is shown as provided at either end with couplings k for
connecting up in line with other pumps and any number of pumps of similar or
different stroke may thus be actuated from the same rocking shaft by being
connected therewith in a like manner.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The improved means of actuating plunger and other pumps, separately or working
in series, where variable speeds and discharges are required or where several pumps
are required to be driven by one belt or shaft, and where it may be requisite to
alter or vary independently the speed or discharge of the pump or pumps ;
consisting of the rocking shaft b, the slotted link piece or pair of coupled cranks, c,
for each pump; the adjustable crank pin d, fitted or formed with the slide block or
blocks e, to which is coupled the driving end f of the connecting rod g, the hand
wheel h, and adjusting screw i, combined and operating as and for the purpose
herein described and shown by the drawing.
Dated this 21st day of November 1894.
OSWALD HAMILTON.