Improvements in Pumps.
Year: 1893

page_text: Date of Application, 16th Mar., 1893
Complete Specification Left, 6th Nov., 1893-Accepted, 16th Dec., 1893
ROYIDIONAL SITUATION,
Improvements in Pumps.
I, RICHARD THOMSON of Angle Cottage, Whifflet in the County of Lanark,
Colliery Manager, do hereby declare the nature of this invention to he as
follows:-
-
This invention which relates to pumps adapted especially for raising water from
mines has for its object the production of a pump having a minimum of working
parts and which are easy of access for removal or repair.
The improved pump is formed with the usual ram casing having a lack valve at
the bottom, but the ram or plunger in lieu of being solid is made hollow or of
cylindrical form and communicates directly with the actuating pump rod which is
also made tubular for the passage through it of the water forced upwards on the
descent of the ram a clack or other valve being fitted between the ram and hollow
rod, opening to let through the water on the downward stroke and closing to retain
the water raised at the upward stroke. The ram is made of greater diameter than
the tubular rod, the volume of water raised being dependent on the difference of
area of the ram and rod. Access to the valves may be obtained through orifices
covered by flanges at or near the upper and lower ends of the ram casing. The
tubular pump rods. may be guided by rollers or other means and at the upper end
the discharge of the water from the hollow rod may take place through a knee
piece into a stationary receiver at one side or surrounding the tubular punip rod
whose upper extremity is connected to the usual bell crank or other moving part of
the pumping engine.
Dated this 15th day of March 1893.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in Pumps.
I, RICHARD THомBON of Angle Cottage, Whifflet in the County of Lanark,
Colliery Manager 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 which relates to pumps adapted especially for raising water from
mines has for its object the production of a pump having a minimum of working
parts and which are easy of access for removal or repair.
As represented in the accompanying drawings in elevation at Figure 1 in plan at
Figure 2 and in vertical section on a larger scale at Figure 3 the improved pump
formed with the usual ram casing A having a clack valve B at the bottom but
the ram or plunger C in lieu of being solid is made hollow or of cylindrical form
and communicates directly with the actuating pump rod D which is also made
tubular for the passage through it of the water forced upwards on the descent of
the ram a clack or other valve E being fitted between the ram C and hollow rod D
opening to let through the water on the downward stroke and closing to retain the
water raised at the upward stroke. The ram C is made of greater diameter than
the tubular rod, the volume of water raised at each stroke being equal to what
would be discharged by a solid ram of same diameter. Access to the valves B
and E may be obtained through orifices covered by flanges F and G at or near the
upper and lower ends of the ram casing A and ram C. The tubular pump rod D
Price 8d.1

page_text: may be guided by rollers or other means and at the upper end the discharge of the
water from the hollow rod D may take place through a knee piece or brecclies
pipe H into a stationary receiver at one side or surrounding the tubular pump rod
whose upper extremity is connected to the usual bell-crank. I or other moving part
of the pumping engine the breeches pipe being preferably connected to the bell
crank as shewn so as to swing freely during the movement of the latter.
As represented in sectional elevation at Figure 4 the ram C may be directly
attached to the connecting rod of a steam engine to form a special steam pump, the
hollow pump rod. D.fitting in a casing J through which the water is discharged and
which also serves as a guide for the rod the parts of the pump being in other
respects similar to the mining pump hereinbefore described.
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 combination of parts constituting the improved pump hereinbefore
described with reference to the annexed drawings.
2. A pump composed of a casing fitted with a hollow ram or plunger attached to
or terminating in a hollow rod through which the water or other liquid is discharged
substantially as described.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow, Agents.