Improvements in Gear or Apparatus for Stopping Pumps and Fluid Compressors.
Year: 1895

page_text: Date of Application, 3rd Dec., 1895-Accepted, 18th Jan.. 1996
COMPLETE SPECIFICATION.
Improvements in Gear or Apparatus for Stopping Pumps and Fluid
Compressors.
I SAMUEL VICKESS of 54 Falkner Street, Liverpool in the County of
Lancaster, 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:-
The object is to provide simple and efficient gear or apparatus for stopping
pumps and fluid compressors on the bursting of a main accumulator or like part on
the delivery side of the pump or compressor.
Apparatus under my invention consists essentially of a chamber in communication
with the delivery main, such chamber being closed by a valve acted on by a weight
or spring, and coupled to a shut off valve, a throttle valve, belt or clutch:
disengaging gear or like means for stopping the motor or disconnecting the pump or
compressor from the motor. In combination with the above appliance, I employ
& vessel through which the valve-rod passes and which serves as a guide therefor
and also as a collector for any fluid passing the valve. An opening for the discharge
of waste fluid from the said vessel is provided.
d is.
The accompanying drawing is a view part in elevation and part in section of
apparatus or gear under my invention. a is a chamber in communication through
the opening b and pipe c with the delivery main of the pump or compressor.
a valve closing against a seat e on the cover of the chamber a, such cover being in
this case formed by the vessel f. g is the valve rod which fits closely but freely
to the interior of the seating e especially when the vesself is not used, so as to
prevent as much as possible any fluid from flowing past the said seat, and also to.
serve as a guide. The said rod g passes through the top h of the vessel which it
fits closely but freely so that the top of the said vessel serves as a guide. When
the vesself is not used, a guide is provided at h. i is an opening in the vessel f
through which any fluid passing the seat e flows away or passes by a pipe to any.
convenient receptacle. is a weight suspended from the top of the valve rod, a
spring may be used instead of a weight as is well understood. The spring or
weight may act directly on the valve rod or through the intervention of a lever or
its equivalent. is a rod or other suitable agent coupled to the valve rod g at m
by means of a pin or other convenient joint and connected to a shut off valve or
belt or clutch disengaging gear or other suitable device for stopping the motor or
throwing the pump out of gear with the motor or the valve-rod itself may be.
coupled to such device.
The action is as follows:-When the pump or compressor is working properly,
the valve d is held against its seat e by the pressure of fluid in the chamber a but
should that pressure be unduly reduced by the bursting of a main or other cause
the valve rod g is moved longitudinally by the weight or spring which is no longer
effectively resisted by the pressure of the fluid on the valve d, and the rod or
connection acts on the device to which it is connected so as to stop the motor or
disengage the pump or compressor therefrom.
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 :-
First. The combination of a fluid pressure chamber. valve and seat. valve rod

page_text: and guides, weight or spring and connections substantially as and for the purpose
set forth.
Second. The combination of a fluid pressure chamber, valve and seat, valve rod
and guides, weight or spring and collecting vessel substantially as and for the
purpose set forth.
Third. Apparatus or gear for stopping pumps, or compressors, substantially in
the manner and for the purpose set forth.
Dated the 2nd day of December 1895.
J. JOHNSON,
4 Clayton Square, Liverpool, Agent.