IMPROVEMENTS IN PUMPS
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by Hermann Fauler at the Office of
the Commissioners of Patents on the 5th December 1881.
HERMANN FAULER, of the Firm of Philipp Anton Fauler, at the City of Freiburg,
Baden, Gerinan Empire. "IMPROVEMENTS IN PUMPS."
This Invention relates to a plunger or solid piston pump, principally intended
for domestic use, which pump may however be used for various trade purposes if
its shape is adapted to the requirements of each case. The object of my said
Invention is to provide a pump which, whilst consisting of but few easily fitted
parts and consequently capable of being manufactured (especially in large numbers)
at a very low price, will yield the fullest effect, as there are no dead spaces in the
same,
The said Invention consists in the peculiar arrangement of the pumpbarrel and
of the tube or casing in which the water or other liquid rises, the foriner being placed
within the latter; in the use of a plunger piston which when rising effects the
suction and the ejection of the liquid simultaneously, and in the arrangement of
an annular pressure valve which surrounds the pump barrel; this valve may
however be replaced by any other suitable valve arrangement.
I will now proceed to describe a suction pump and a force pump embodying my
Invention, both for use in raising water, the modifications which may be required
for adapting these pumps for raising other liquids will not require to be hero
described as they will be readily seen by any competent person.
A suction pump I construct as follows, viz.:-
The outer casing of the pump serves as the tube or reservoir in which the water
rises, and has a spout through which the water is delivered; in the bottom of this
casing there is a valve which opens inward; above the said valve is placed the
pump barrel; this is a plain tube having flanges at its lower end; the outer rim of
this flange is inserted between the flanges of the upper and lower part of the pump,
and the three flanges are fastened together. In the Hange of the pump-barrel and
between the latter and the pump casing I provide apertures for the water to pass
through. The lower end of the pump barrel is somewhat enlarged and is
surrounded by the annular valve hereinabove mentioned, which valve may either
be flat or conical. In the pumpbarrel works a solid plunger piston whose length

page_text: varies according to whether it is desired to throw out water from the pump
continuously, or at the upstroke only, or at the downstroke only. For working the
piston I may provide any suitable means, but I prefer to actuate the same by
means of a band of steel or other suitable pliable material, attached by one end to
the top of said piston, passing through the top or cover of the pump, and
fastened by its other end to the upper end of the segment shaped short arm of a
lever or handle suitably mounted on the outside of the pump-body or casing. The
plunger or piston is turned smooth and inserted into the pumpbarrel without
requiring any packing, as its length will render the same sufficiently tight for all
ordinary purposes. The said piston is ruised by the means above indicated, whilst
it descends by its own weight."
A force pump I construct according to this Invention on the same principles as
the above described suction pump.
The casing is enlarged at the top and thus serves as an airchamber. The pump
is preferably made so as to throw out water at the upstroke only, as this allows
the casing, upon which there is tensile strain only, to be made very thin. The
piston in this case has a rod which passes through a stuffing box in the top of the
airchamber. The piston works in a barrel constructed like that hereinabove
described, and in substantially the same manner as the piston of the suction pump.
To prevent however the compressed air from escaping through the stuffing box in
the roof of the air chamber, this stuffing box is surrounded by a tube extending
below the water level in the pump. Now when the pump becomes filled with
water this tube is hermetically sealed by the latter, and as there is no difficulty in
making a joint watertight, the airchamber is effectually closed.