Improvements in the Manufacture of Force Pumps.
Year: 1890

page_text: Date of Application, 6th May, 1890
Complete Specification Left, 30th Jan., 1891-Accepted, 11th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Force Pumps.
I, ROBERT TOLLADAY, of 8, Chandos Road, Highgate Park, Birmingham, in
the County of Warwick, Foreman Brass Finisher, do hereby declare the nature of
this invention to be as follows :-
These force pumps consist of a tube capped at both ends; these caps are
pierced with a ring of holes to allow of the liquid or fluid matter to pass through
In the centre of
them. The one cap carries a nozzle and valve arrangements.
this cap is a small tube, which works in an accurately fitting small tube which
forms the piston, and has a ring of holes at the farthest end of the tube. From
the cap the inner tube has a similar ring of holes, but these holes are up against
the cap at the other end of the large tube; this with the valve arrangements,
causing a double action in the pump.
This pump can be either worked by hand or other power.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Force Pumps.
I, ROBERT TOLLADAY, Foreman Brassfounder, late of 8, Chandos Road,
removed to 160, Moseley Street, Highgate, Birmingham, in the County of
Warwick, 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 :-
These force pumps consist of three separate air-tight chambers (No. 1. 2 and 3)
formed by tubes, or castings, sliding one inside the other; (made air-tight by three
stuffing-boxes packed with leather-"E" stuffing-box makes No. "1" chamber
air-tight; stuffing-box makes No. 2 chamber air-tight, and "G"
stuffing-box makes No. "3" chamber air-tight :) and an arrangement of two pairs
of valves working in a reverse direction to one another, so that when the
plunge No. "2" is drawn outwards, the water, or air, enters at tube "H," into
water-box I, opens valve "A," and closes "C" filling the front part (that is the
nearest to the nozzle) of chamber No. "3" with air, or water, until the
plunge No. 2" is drawn back as far as it can go. When the plunge is forced
inwards, it closes valve "A," opens valve "B," and forces the water, or air, out
through nozzle, to where it is required, and at the same time opens valve "C,"
closes valve "D," and draws water, or air, through chamber No. "1," which in
turn goes through chamber No. "2," and then through ring of small holes "J,"
into chamber No. "3;" and with the outward stroke of the plunge again, forces
the water, or air, in turn back through chamber No. "1," closing valve "C," and
opening valve D," so that this pump is constantly filling, and ejecting water, or
air, at the same time, at both the outward and the inward stroke of the plunge.
#
These pumps can be used for either water, or air, or for any other purpose to
which pumps are applied; also can be used as injectors for boilers, and for
pumping water from mines by steam, or other power, when made in larger sizes.

page_text: 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 :-
1. The novelty in the arrangement of three air-tight chambers working one
inside the other.
2. The arrangement of two pairs of twin valves working in a reverse direction
one to the other.
Dated this 29th day of January 1891.
ROBERT TOLLADAY.