Improvements in and connected with Pumps.
Year: 1892

page_text: Date of Application, 19th Feb., 1892
Complete Specification Left, 17th Nov., 1892-Accepted, 31st Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in and connected with Pumps.
1, JOHN BARR, of The Glenfield Company, Limited, of Kilmarnock, in the
County of Ayr, North Britain, Engineer, do hereby declare the nature of this
învention to be as follows, that is to say :-
My said invention has for its object to construct the parts of pumps and parts
arranged for working them by a rotating shaft, in an improved manner and so
that a shaft rotating at a high speed like that of an electro-motor may be directly,
conveniently, and satisfactorily employed.
In carrying out my invention I combine three pump barrels side by side, and
have them worked by "three-throw" (that is three equidistant) cranks on the
rotating shaft. Each crank has on it externally-square bearing blocks fitted to
slide in a transverse slot or opening in a block or frame fitted to slide longi-
tudinally in horn guides on one end cover of the pump barrel. Rods extend from
the longitudinally moving block to a crosshead beyond the other end of the pump
barrel, and a rod extends from the crosshead inwards through a stuffing box to
the piston which is of the bucket type being fitted with a valve controlled by a spring.
The bucket piston is by preference of an elongated form and has a number of
small grooves round its outer surface; whilst it works in a brass liner fixed in the
barrel. The sizes of the barrel and of the bucket valve are large as compared
with the stroke so that a very small opening of the valve will give free passage
to the liquid pumped; and the smallness of the stroke gives a comparatively slow
speed of piston with a high rotative speed of the shaft. The foot or inlet valve
for each pump barrel is by preference a double-beat valve of comparatively large
size.
The improved pumping apparatus whilst extremely compact in arrangement,
will produce a practically continuous flow, with little or no concussion, although
worked at a high speed.
Dated this Eighteenth day of February 1892.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in and connected with Pumps.
1, JOHN BARR, of The Glenfield Company, Limited, of Kilmarnock, in the
County of Ayr, North Britain, 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, that is to say :-
My said invention has for its object to construct the parts of pumps and parts
arranged for working them by a rotating shaft, in an improved manner and so
that a shaft rotating at a high speed like that of an electro-motor may be directly,
conveniently and satisfactorily employed.
In carrying out my invention I combine three pump barrels side by side, and
have them worked by "three-throw" (that is three equidistant) cranks on a
rotating shaft. The piston of each pump is of the bucket type being fitted with
a valve controlled by a spring, and being by preference of an elongated form
[Price d

page_text: and made with a number of small grooves round its outer surface; whilst it works
in a brass liner fixed in the barrel.
And in order that my said invention and the manner of performing the same
may be properly understood I hereunto append two sheets of explanatory drawings
to be hereinafter referred to and showing simple arrangements of my improved
apparatus.
Figure, 1, on Sheet, 1, of the drawings is a plan, and Figure, 2, a longitudinal
vertical section of one example of my improved pump.
Figure, 3, on Sheet, 2, is a plan, and Figure, 4, a partial longitudinal vertical
section of one pump barrel and accessory parts of an example, some parts of
which are modified.
Figure, 5, is a partial longitudinal vertical section showing a modification of the
inlet valves and valve box suitable for a set of pumps to be used in a mine or other
confined space.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
As shown in Figures, 1, and, 2, I combine on a suitable sole plate, A, three
pump barrels, B, side by side; and have them worked by three cranks, C, on a
rotating shaft, D. Each crank, C, has on it externally-square bearing blocks, E,
fitted to slide in a transverse slot or opening, F, in a block or frame, G, fitted to
slide longitudinally in horn guides, H, on one end cover, J, of each pump barrel, B.
Two rods, K, extend at diagonally opposite parts from each longitudinally moving
block, G, to a crosshead, L, beyond the other end cover, M, of the pump barrel, B,
and a rod, N, extends from the crosshead, L, inwards through a stuffing box, P,
to the piston, Q. The piston, Q, is of the bucket type being fitted with an annular
valve, R, controlled by a spring, S. The bucket piston, Q, is of an elongated form
and has a number of small grooves round its outer surface; whilst it works in a
brass liner, T, fixed in the barrel, B. The sizes of the barrel, B, and of the
bucket valve, R, are large as compared with the stroke so that a very small
opening of the valve will give free passage to the liquid pumped, and the smallness
of the stroke gives a comparatively slow speed of piston, Q, with a high rotative
speed of the shaft, D. The foot or inlet valve, U, for each pump barrel, B, is a
double-beat valve of comparatively large size; and it is carried in a valve box, V,
connected by flanges, W, to the barrel, the valve box extending down beneath the
level of the sole plate, A, in this example.
In the modification shown in Figures, 3, and, 4, the crank, C, is in each case
connected by ordinary side rods, K, to the crosshead, L. The foot or inlet
valves, Y, shown in this example consist of three concentric rubber rings held by
their inner edges, their outer edges turning up in opening.
In Figure, 5, instead of the over-hung inlet valve box (V) hereinbefore described,
a number of small rubber valves, Z, are fitted in a valve box formed in an
extension of the sole plate, A, in a manner to avoid any projection below the
bottom thereof.
My improved pumping apparatus herein before described whilst extremely compact
in arrangement will produce a practically continuous flow, with little or no con-
cussion, although worked at a high speed, the water always moving in the same
direction. The strain on the side rods, crank shaft, and bearings is always in one
direction; no heavy gearing is required and tear and wear and noise are very
small; and a large duty is obtainable from a comparatively small machine;
whilst all parts are easily accessible.
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 improved construction, combination, and arrangement of pumps and
parts for working them substantially as hereinbefore described, with reference to
Figures, 1, and, 2, of the accompanying drawings.

page_text: 2. The improved pumping apparatus forming the subject matter of Claim, 1,
modified as hereinbefore described with reference to Figures, 3, to, 5, of the
accompanying drawings.
Dated this Sixteenth day of November 1892.
EDMUND HUNT,
Applicant's Agent.