An Improved Pump.
Year: 1896

page_text: Date of Application, 30th May, 1896-Accepted, 22nd May, 1897
An Improved Pump.
!, CHRISTIAN SCHEY of Kaiserslautern in the Empire of Germany,
Mechanician, 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 pump, shown on Figs. 1, 2, and 3, is composed of the following parts:-
1) Two cylinders combined and connected by two distributing chambers E¹, E.
2) Pistons A and A' the first having two plugs made of hardened indin-
rubber B1 and B2.
3) Reversing levers C² and C².
4) Two conical distributing valves D1 and D2.
5) Chainbers E1, E2 for the distribution valves.
6) The outside connecting device composed of the lever F, the hand-lever F,
and the connecting-rod F
The object of this invention is to improve the distributing action of piston-pumps
of all kinds.
The most striking advantage of my piston-pump, over pumps provided with
flap-valves, or other such mechanism, is that these expedients are completely
abolished in my pump and are replaced by one or several inverted conical
distribution valves with forced flow.
The action of the said pump is perfectly smooth and easy as well as absolutely
reliable, for the reversing movement is effected in a purely mechanical manner.
without either eccentrics or spring. The pistons of the two cylinders are so
arranged that they simultaneously reach the dead point in their opposing position.
A little before reaching the top and bottom of its stroke, the piston A pushes
forward the reversing lever C or C2 by means of its hardened india-rubber
plug B or B2, the effect of which is to turn the two distribution valves into their
prescribed course through the box or chamber, by the help of the outside connecting
device F1, F2 and F3, so as to obtain the silent and regular opening and closing of
the forcing channels G G2 and the suction channels H', H2. The lengthened
hand-lever F causes the simultaneous closing of the two distribution valves, as
soon as the pump's action is stopped. The four lateral openings made in
the two cylinders and shut by bolts J, J, J, J, serve to remove the reversing
levers.
The discharging power of the pump herein described is still further increased by
the fact (1) that the entrance and the discharge or flow of the liquids or gases, etc..
are no longer checked by resistance of flap valves, or by their weight, seeing that
the whole of this troublesome mechanism is done away with, and (11) that the
limit of exhaustion or suction is much higher since the channels open and close
directly.
A noteworthy point with regard to the installation of this piston-pump, is that it
may be fixed in any position and that its regular and noiseless action is in no way
affected thereby.
The pump in question may be used to raise liquids of every kind, while its large
unobstructed openings and its perfect closing, specially adapt it for use with thick
liquids. Finally it can be successfully used for liquids at a very high temperature
and for which pumps with flap valves are generally useless.

page_text: The pump herein specified offers a suitable means for producing a vacuum.
The drawing referred to in the present specification, shows a piston-pump of
-single action.
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:-
A pump distinguished by rotary conical distribution valves D and D' with
forced flow, closing once or several times, and reversed mechanically by means
of the lever C or C through the reciprocating movement of the piston A
and by the outside connecting device F1, F2, F' which allows the suction and
forcing channels to shut and open in a suitable manner for thick, cold or very hot
liquids.
Dated this 20th don of Max 1908
L. DUVINAGE,
Agent for Applicant.