IMPROVEMENTS IN PUMPS
Year: 1877

page_text: PROVISIONAL SPECIFICATION left by George Pinnington at the Office of
the Commissioners of Patents on the 9th October 1877.
_GEORGE PINNINGTON, of Chester, in the County of Chester, Insurance Agent.
"IMPROVEMENTS IN PUMPS."
This Invention has for its object to produce a pump for raising and forcing liquids
having for its main object to work economically, and consists essentially in using in
place of the piston, plunger, or bucket at present in use, a coil or coils of flexible
tubing, the said coil or coils of flexible tubing being alternately coiled and uncoiled
on and off a drum barrel, or the like, fixed within a closed pump head or its
equivalent.
In carrying my Invention into practice I construct a single-action pump in
manner following:-To a tube or shaft provided with a valve opening upwards I
attach an air-tight head or box, within which is a drum or barrel caused to revolve
by means of a shaft or its equivalent passing through the pump head or box.
Around the said drum or barrel is coiled a length of flexible tubing, one end of
which, fitted with metal or other rigid tubular end, passes out through a stuffing box
in a line with the longitudinal axis of the drum or barrel, so that such end shall
rotate with the drum or barrel. The other end of the tube passes through a second
stuffing box placed at or nearly at right angles to the longitudinal axis of the said
drum or barrel, and is free to slide through the said stuffing box.
Instead of employing a stuffing box a head of water may be kept over the
opening through which the coil passes, and so form a water packing. Both ends of
the said tube are open to the atmosphere. A coil or coils of wire or like means are
employed to keep the flexible tubing distended. The head or box is fitted with an
outlet provided with a valve.
From the above description it will be evident that when the flexible tube is
caused to uncoil from off the drum or barrel that a vacuum will be formed within
the head or box, and that liquid will ascend through the pipe or shaft past the
valve into the head, and will fill the space before occupied by the flexible tube. .
When the tube is again coiled on the drum or barrel the liquid will be forced out
past the outlet valve.

page_text: In constructing a double-action pump under my Invention two heads or boxes
are employed, and the flexible tube is so coiled on the drum or barrel in each head
or box that when motion is given to the said drums or barrels one tube is being
coiled, whilst the other is being uncoiled. The two ends, which pass out of the heads
or boxes in a line with the axis of the drums or barrels may be connected together
when they are in the same straight line, as also may be the drum shafts.
To ensure that that portion of the flexible tube which enters and leaves the
head or box during coiling and uncoiling shall lay properly on the drum or barrel,
or occupy the desired position, so as freely to pass through the stuffing box or gland,
a longitudinal motion is given to the drum or barrel during its revolution, or a
sliding motion is given to the stuffing box or gland through which the flexible tube
passes.
Further means for causing the flexible tube to take the necessary position on the
drum or barrel consists of an endless band or bands of canvas or other material
placed at the required distance from the drum or barrel, and is caused to travel by
contact with the flexible tubing during coiling and uncoiling.