An Improved Pump for Mining and other Purposes.
Year: 1897

page_text: Date of Application, 19th Oct., 1897-Accepted, 20th Nov., 1897
COMPLETE SPECIFICATION..
An Improved Pump for Mining and other Purposes.
I, GEORGE LANSELL of the Fortuna Crushing Works, Bendigo in the Colony
of Victoria, Quartz Miner, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tlined in and by the following statement:-
This invention has been devised in order to provide a pump which will be
capable of raising a larger quantity of water with a given expenditure of power
than is practicable with mining pumps at present in use. Incidentally it assists
in ventilating the mine.
In order that my invention may be readily understood I will describe it by
reference to the accompanying drawings, which illustrate its construction.
The essential feature of my improved pump consists in the use of a single
cylinder, such as A, fitted with a piston, such as B, so arranged that the upper
part of said cylinder serves as an air pump whilst the lower part serves as a water
pump both upper and lower parts being arranged to discharge into the main up-
take or delivery pipe C of the pump.
Drepresents the ordinary suction pipe fitted with a clack valve such as E to
prevent the return of the water on the down stroke of the piston B whilst F
represents a similar clack valve at the lower end of the uptake C to prevent the
return of water into the pump cylinder. In addition to this valve it is preferable
to use a retention valve of some kind for each hundred feet of lift in order to
support the strain of the column of water.
Grepresents an air inlet and H an air outlet valve which are provided at the
upper end of the cylinder A, the one to admit air into said upper part of said
cylinder and the other to allow air to pass therefrom into the uptake C. The
piston rod is passed through the stuffing box J at the head of the pump
cylinder and said piston rod is connected to the ordinary pump rods in the usual
way. In operation when the piston. B is forced down it draws air in through
the valve G into the upper part of the cylinder A and forces the water in the
lower part of said cylinder through the valve F into the uptake C. On the up
stroke of the piston B water is drawn through the suction pipe D into the lower
part of the cylinder A and the air previously contained in the upper part of said
cylinder is forced out through the valve H into the uptake pipe C where it
mingles with the water contained in it and assists it to rise.
If found desirable I may insert a valve or cock between the upper part of the
cylinder A and the uptake C as indicated at K, and I may connect the lever of
said valve K by a wire or rod L to the piston rod I as shewn so that the upward
and downward movement of this latter may be utilised for turning said valve on
or off and thus allow a certain amount of water from the uptake pipe C and a
certain amount of air from the upper part of the cylinder A to intermingle.

page_text: 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:-
The herein described pump for mining and other purposes consisting essentially
of a single cylinder (such as A) fitted with a piston (such as 13) the whole being
so arranged that the upper part of said cylinder serves as an air pump to force
air into the uptake or delivery pipe whilst the lower part serves as a water pump
to force water into said uptake or delivery pipe substantially as and for the pur-
poses herein described and explained and as illustrated in the accompanying
drawing.
Dated this Seventh day of September One thousand eight hundred and