Improvements in Automatic Starting and Stopping Arrangements for Pumps.
Year: 1899

page_text: Date of Application, 22nd Mar., 1899-Accepted, 13th May,
1899
COMPLETE SPECIFICATION.
Improvements in Automatic Starting and Stopping Arrangements
for Pumps.
I, CARL LANGE, of 22, Admiralitstrasse, Hamburg, in the Empire of Germany,
Civil Engineer, 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:--
My invention relates to improvements in automatic cut-off apparatus for pumps,
used in pumping gas, air or liquids, whereby the lowering of the pressure to
a certain point brings the pump into action, and the raising of the pressure to
a certain point stops the same.
The invention consists in the construction and novel combination and
arrangement of parts hereinafter described, and illustrated in the accompanying
drawing.
In the drawing 6 designates a pump whereby air or liquid is pumped into
the pipe k. The piston rod J of the piston a is connected with a slotted-link g.
One end of the said slotted-link g is connected with an eccentric & by means
of a rod e, the other end of the link being connected to the driving shaft e by
means of the rod f. The end of the rod connecting with the driving shaft being
concentric therewith consequently does not impart a reciprocating motion to the
rod and the end of the link connected therewith.
to
When the pressure in the pipe & is sufficient to raise the piston h, which is
connected with the slotted-link g by the rod i, the pump will consequently come
to a stop. When the pressure is reduced to a certain point or gradually reduces,
the piston gradually lowers as the pressure reduces and causes the link
lower accordingly and impart a reciprocating motion to the link g, and the pump
piston a. The length of the stroke of the pump piston depends upon the position
of the link g in relation to the pump piston rod as it is obvious that the stroke
is lengthened as the link is lowered by the increased leverage of the link; and
As the vertical movement of the link g
conversely when the link is raised.
is controlled by the piston h, which is in turn controlled by the pressure of the
air or liquid in the pipe k, it is obvious that the same can be continually retained
b at a certain pressure.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. The combination of a pump, a power shaft carrying an eccentric, an eccentric
5 rod connecting with one end of the slotted link; a rod having one end concentric
with said power shaft connecting said power shaft with the opposite end of the
link, a piston or plunger actuating rod connected with slotted links and means
for actuating the link to throw the pump plunger in and out of gear with the
eccentric, substantially as described.
10
2. The combination of a pump operated and controlled by an eccentric and link

page_text: motion, an automatic governor comprising a piston connected with said link and
actuated by the raising and lowering of the pressure in the pipe connecting pump
and governor cylinders, whereby the lowering of the governor piston increases
the effective reach of the link and consequently the stroke of the pump piston;
and conversely, substantially as described.
001 1 of ab 1800
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.