Improvements in Pumps.
Year: 1888

page_text: Date of Application, 18th Dec., 1888
Complete Specification Left, 14th Sept., 1889-Accepted, 19th Oct.; 1889
PROVISIONAL SPECIFICATION.
Improvements in Pumps.
I, JOHN WHITE, Manager to Messieurs James Bertram & Son, Leith Walk Foundry,
Edinburgh, in the County of Mid Lothian, North Britain, do hereby declare the
nature of this Invention to be as follows, that is to say :-
My said Invention has for its object to construct pumps in an improved manner, and
so as, whilst applicable for general purposes, to be very suitable for pumping paper
pulp, or half-stuff, or water or other liquid containing fibrous or other matters in
suspension.
In carrying out my Invention according to one modification I employ a fixed
box-like frame to the two opposite sides of which pulsating plates are attached by
means of impervious flexible material such as rubber cloth or leather. The pulsating
plates are fixed to or formed in the same pieces with levers centered on fixed framing
beyond one end of what may be termed the pump box. The other ends of the
pulsating-plate levers are connected to any suitable mechanism which will impart
to them opposite vibrating motions and thereby cause the pulsating plates to
alternately approach to and recede from each other. The levers may be acted on by
cams, eccentrics, or cranks, on a rotating shaft, either directly or through toggle or
other levers. A foot or inlet valve is provided at one end of the pump box and a
discharge valve is provided at the other end, these valves being by preference ball
valves of rubber or other suitable material, although any suitable known kind of pump
valves may be used. The pump box is constructed with one or more doors, in the
fixed part or pulsating plates to give easy access to the interior for cleaning out or
removing obstructions.
The pump box may be made with more than two pulsating plates such plates being
all moved towards and from the centre of the box alternately; and two or more pump
boxes may be combined in one machine their indrawing and expelling strokes being
arranged to take place at different times. The pump box is by preference arranged
with its pulsating plates vertical in their middle positions; but it may be arranged
otherwise if found desirable in any case.
Dated this Seventeenth day of December 1888.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Pumps.
I, JOHN WHITE, Manager to Messieurs James Bertram and Son, Leith Walk
Foundry, Edinburgh, in the County of Mid Lothian, North Britain, 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 pumps in an improved manner,
and so as, whilst applicable for general purposes, to be very suitable for pumping
paper pulp or half-stuff or water or other liquid containing fibrous or other matters in
suspension.
In my improved apparatus the pumping action is produced by means of pulsating
plates which form opposite sides of a box or chest provided with inlet and discharge
passages and valves.
And in order that my said Invention and the manner of performing the same may

page_text: be properly understood I hereunto append a sheet of explanatory drawings to he
hereinafter referred to and showing a simple modification of my improved pump.
Figure, 1, on the sheet of drawings is a vertical section and figure, 2, is a sectional
side elevation of my improved pump
In carrying out my Invention according to one modification I employ a fixed
box-like frame, 3, to the two opposite sides of which pulsating plates, 4, are attached
by means of impervious flexible material, 5, such as rubber cloth or leather fixed by
being placed between frames and plates bolted to the box, 3, and to the pulsating
plates, 4. The pulsating plates, 4, are fixed to or formed in the same pieces with
levers, 6, centered on pins, 7, in fixed framing, 8, beyond the upper end of what may
be termed the pump box, 3. The lower ends of the pulsating-plate levers, 6, are each
provided with a cod piece, 9, made with a spindle, 10, swivelling in bearings formed
for them in the levers, 6. These cod pieces, 9, work in the grooves of cams, 11, on a
shaft, 12, made to rotate by means of a pulley, 13, and driving belt. The cams, 11,
impart to the levers, 6, opposite vibrating motions and thereby cause the pulsating
plates, 4, to alternately approach to and recede from each other. The material is lod
through a pipe, 14, to the bottom of the pump box, 3, where a foot or inlet valve, 15,
is provided, a discharge valve, 16, being also provided at the other end; these
valves, 15, 16, being by preference ball valves of rubber or other suitable material,
although any suitable known kind of pump valves may be used. The material after
passing the discharge valve, 16, enters a passage, 17, formed in the framing, 8, from
which it is led away. The pump box, 3, and discharge passage, 17, are constructed
each with one or more doors, 18, to give easy access to the interior for cleaning out
or removing obstructions.
The
pump box, 3, may be made with more than two pulsating plates, 4, such plates
being all moved towards and from the centre of the box alternately; and two or more
pump boxes may be combined in one machine their indrawing and expelling strokes
being arranged to take place at different times. The pump box, 3, is by preference
arranged with its pulsating plates, 4, vertical in their middle positions as shown; but
it may be arranged otherwise if found desirable in practice. The levers, 6, may be
actuated by any suitable mechanism which will impart to them opposite vibrating
motions, such as cams, eccentrics, or cranks, on a rotating shaft either directly or
through toggle or other levers.
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 :-
1. The combination and arrangement of parts constituting my improved pump
substantially as hereinbefore described and as shown in the accompanying drawings.
2.-In combination for pumping, a box provided with inlet and outlet passages and
valves and with movable sides and mechanism for imparting pulsating motions to such
sides substantially as herein before described.
Dated this Thirteenth day of September 1889.
EDMUND HUNT,
Applicant's Agent.