AN IM- PROVED DOUBLE ACTING PUMP APPLICABLE TO HYDRONETTES OPERATED BY HAND OR FOOT-POWER, AND FOR GENERAL PURPOSES
Year: 1878

page_text: LETTERS PATENT to Carl Pieper, Civil Engineer and Patent Agent, of 74,
Belle-Alliancestrasse, Berlin, S.W., Prussia, for the Invention of "AN IM-
PROVED DOUBLE ACTING PUMP APPLICABLE TO HYDRONETTES OPERATED BY
HAND OR FOOT-POWER, AND FOR GENERAL PURPOSES." A communication
from Charles Gustave Mueller. of Hannover, Prussia.
COMPLETE SPECIFICATION filed by the said Carl Pieper at the Office of the
Commissioners of Patents on the 27th November 1878.
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CARL PIEPER, Civil Engineer and Patent Agent, of 74, Belle-Alliance strasse,
Berlin, S.W., Prussia. AN IMPROVED DOUBLE ACTING PUMP APPLICABLE TO
HYDRONETTES OPERATED BY HAND OR FOOT-POWER, AND FOR GENERAL PURPOSES."
A communication from Charles Gustave Mueller, of Hannover, Prussia.
The subject-matter of this Invention consists in an improved double-acting pump
especially applicable to hydronettes to be worked by hand or by the feet of the
operator, but which may also be used for other purposes.
On the accompanying Sheets of Drawings, Fig. 1 represents the improved pump
in longitudinal section; Fig. 2 shows the same applied to a hydronette to be
worked by hand; Fig. 3 is a section and Figs. 4 and 4a are end views of the nozzle-
attachment; Figs. 5 and 6 represent a modification of the same; Figs. 7 and 8 show
a hydronette to which the improved pump is applied, arranged to be worked by
foot-power; and Fig. 9 finally is a modification of the latter.
•
The water is distributed in the pump-barrel A by a slide-valve B, Fig. I, com-
bined with the piston F, while the suction-pipe C and the discharge-pipe D con-
stitute two piston-rods; E', E2, is a cylindrical piece brazed to the two pipes C and D,
and containing an angulated or otherwise suitably shaped partition-wall e, which
divides it into two chambers, the one, E¹, communicating with pipe C, the other, E²,
with pipe D. This arrangement may be altered by making the pipes or hollow

page_text: '
rods C and D out of one piece, having a plug in the middle and two openings, one
of which communicates with chamber E¹, the other with E2. On the accurately
turned outside of the piece E¹, E2, the cylindrical slide B works, alternately closing
and opening the ports 1, 2, 3, 4. This slide is prevented from slipping off from the
piece E, E, and its stroke is limited by the shoulder a and a ring b fastened by
screws. Moreover, it is prevented from turning on E', F2, by a small projection or
guide working in a notch of the shoulder a, or by any other equivalent means.
The action of the described parts is as follows:-The pipe C being held in one
hand, or both pipes C and D being fixed, the pump-barrel is moved by the other
hand or by any suitable power. When the barrel is pushed in the direction of the
arrows x, x, the friction between the same and the piston F causes the slide B con-
stituting with the piston a single piece to be shifted in the direction of the motion
of A, so as to open the ports 1 and 3, while 2 and 4 are closed. (This position is
shown by Fig. 1.) In consequence water will be sucked in below the piston through
pipe C and port 1, while the water contained in the barrel above the piston is dis-
charged by port 3 and pipe D into the air-vessel G. When the motion of A is
reversed, ports 2 and 4 are opened, and 1 and 3 closed, whereby the water is caused
to pass from C through port 2 above the piston into the barrel, while the discharge
takes place from below the piston through port 4 into pipe D.
It will be observed from what has been said,-Firstly, that this pump is double-
acting; secondly, that in consequence of the substitution of a slide-valve for ball
or other beat-valves, the pump will work equally well in horizontal or vertical
position or inclined at an angle; thirdly, that the shifting of the slide-valve, and
consequently the opening and the closing of the ports takes place automatically at
the very moment when the stroke of the barrel is changed; and fourthly, that the
passage for the water through the ports is not obstructed by any valve as in the
ordinary arrangement.
It is evident that the described pump, when combined with a suitable mechanism
for moving the barrel, such as a lever or crank, may be used for raising and forcing
water or other liquids in all cases in which reciprocating pumps are ordinarily
employed. The barrel may also be directly connected with the piston-rod of a
steam-engine, as in the case of steam-pumps or fire-engines.
When the pump is executed in small dimensions it is especially adapted for being
used as hydronette to be worked by hand without any mechanism at all, see Fig. 2.
In this case the inventor prefers to combine with the pump an air-vessel, which is
either divided by an india-rubber diaphragm into an air-chamber and a chamber for
the passage of the water, or which contains a closed bag or pouch filled with air.
An air-vessel of this description has the advantage in common with the pump of
acting equally well in any position whatever, but the same does not constitute any
part of the present Invention.
In Figures 7 and 8 a combination of the described pump, with a mechanism for
operating it by foot-power, is shown. The pipes C and D are fixed in the stan-
dards L, L, attached to the bed-plate M. To lugs on this plate the shaft N is
pivoted carrying the two three-branched levers O, P, Q, and O¹, P¹, Q. The two
center-branches P and P¹ of these levers are jointed by short connecting-rods R to
the barrel A, while the other two pairs of branches O, O', and Q, Q¹, together with
the foot-plates S and S¹ form treadles. The branches P, P¹, may however operate
directly on studs fixed to the barrel A provided the holes at the ends of the said
branches be oval. The person who works this pump or hydronette stands with his
heels on the parts T, T¹, of the bed-plate, and alternately presses down the two
treadles by the motion of his feet, thereby moving the barrel A to and fro. G is
the air-vessel, which may be either of the kind inentioned above or of any other
description.
Fig. 9 represents a modification of the latter arrangement, the pump-barrel being
made to work up and down. The air-vessel G in this case serves as a standard to
which the suction pipe C and the discharge pipe D are fixed, and which, carries the
pivots for the levers P².

page_text: For the purpose of causing the pump to throw out the water in the form of spray,
a cone K, Figs. 3, 4, and 48, or other tapered body is used, which is directed with its
point towards the centre of the nozzle. This cone, &c., is fixed by a wire f to an
open case g provided with an eccentric socket h, which turns on a boss i attached
eccentrically to the nozzle. When this case is in the position of Figs. 3 and 4 the
cone is out of the way of the jet of water forced from the nozzle, but when the
case g is turned a quarter of a circle, as in Fig. 4ª, the cone K is opposite to the bore
of the nozzle and divides the jet of water into spray.
Figures 5 and 6 show another arrangement by which the cone may be put into
or out of use at will. The case g turns on two pivots j screwed into the square end
of the nozzle; k is a spring which bears on the corners of the two branches of g,
through which the pivots j pass, and thereby presses these branches against the pro-
jections m of the nozzle, so as to keep. the cone K in the center-line of the nozzle.
By a slight lateral pressure however g may be turned a quarter of a circle, and will
then be again retained in this second position by spring k in a similar manner as
the blade of a pocket-knife is secured in different positions by its spring.
The cone K may also be fixed to a slide, so as to be shifted aside in a straight
line.
I am aware that a conical plug has already been combined with the nozzle of a
hose-pipe for the purpose of dividing the stream of water, as shown in the American
Patent, No. 89,456, to A. F. Allen, but in this case the said plug always remains in
the center-line of the nozzle if it is not removed altogether. The substance of the
present Invention however, as far as the cone is concerned, consists in combining
this cone with an arrangement for turning or shifting it into the stream or out of
the way, as may be deemed suitable.
Having thus described the nature and object of this Invention, and the manner
in which it is to be or may be carried out in practice, as communicated to me by
my correspondent, I claim as new and essential features of the same,-
1. In combination with the pump-barrel A the two pipes or hollow piston-rods C
and D, the cylindrical chamber-piece E1, E2, with partition-wall e, and the cylindrical
slide-valve B having the piston F attached to it, substantially as and for the purpose
stated.
2. The above-described pump in combination with the treadles O, S, O¹, and
Q, S', Q', and with suitable levers and connecting-rods, substantially as and for 'the
purpose specified.
3. In combination with the nozzle I the cone or tapered body K, arranged in
such a manner that it may be turned or shifted into or out of the stream of water,
as specified and for the purpose described.
In witness whereof, I, the said Carl Pieper, have hereunto set my hand and
seal, this Twenty-first day of November, in the year of our Lord One
thousand eight hundred and seventy eight.
CARL PIEPER. (L.S.)