Improvements in Apparatus for Pumping Water from Mines.
Year: 1886

page_text: Date of Application, 6th Oct., 1886.
Complete Left, 6th July, 1887.
Complete Accepted, 16th Aug., 1887.
PROVIDIUNAL SPECIFICATION,
Improvements in Apparatus for Pumping Water from Mines.
I CHARLES BLAGBURN of 150 Leadenhall Street London E.C. do hereby declare the
nature of this invention to be as follows:-
The object of this invention is to render the pumping of water out of mines more
convenient and to keep the flow in the rising main steadier.
To effect this purpose I place on the bank or at any convenient situation, a duplex
pumping engine of the Worthington or other similar type; each end of each pump
being connected direct by pipes to the similar end of a pump of the same construction
and dimensions situate at the bottom or other convenient part of the mine.
The plungers or pistons of the last named pumps are connected, either directly or
by levers and links to the pistons or plungers of suitable mine pumps of the duplex
or other type.
By this means the flow of water in the rising main is rendered uniform and free
from shocks.
Proper valves are fitted to the hydraulic pipes to make up for leakage & pet cocks
are placed wherever there is danger of air lodging. Escape valves loaded either
with weights or by springs are provided to prevent any undue pressure occuring in
the pipes and to allow the pumps at top & bottom to keep together in exact time.
India rubber or spring stops are fitted on the pumps below to prevent damage should
the plungers strike the ends of the pump.
I am aware that the use of hydraulic pipes connecting two similar pumps so as to
cause their pistons to reciprocate together is not new, but believe the application and
use of duplex pumps of the Worthington or similar type for the purpose above
described is an original invention.
DAL CAL
1000

page_text: I CHARLES BLAGBURN of 150 Leadenhall Street, London E.C. 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 of this invention is to render the pumping of water out of mines more
convenient and to keep the flow and the rising main steadier.
To effect this purpose I place on the bank or at any convenient situation a duplex
pumping engine of the Worthington or other similar type, each end of each pump
being connected direct by pipes to the similar end of a pump of the same construction
and dimensions situated at the bottom or other convenient part of the mine. The
plungers or pistons of the last named pumps are connected, either directly or by levers
and links to the pistons or plungers of suitable mine pumps of the duplex or other
type.
By this means the flow of water in the rising main is rendered uniform and free
from shocks.
Proper valves are fitted to the hydraulic pipes to make up for leakage, and pet cocks
are placed wherever there is danger of air lodging. Escape valves loaded either with
weights or by springs are provided to prevent any undue pressure occurring in the
pipes and to allow the pumps at top and bottom to keep together in exact time. India
rubber or spring stops are fitted on the pumps below to prevent damage should the
plungers strike the ends of the pump.
I will now fully describe my invention referring in so doing to the accompanying
drawings in which Figure 1 is a side elevation of a steam or other motor connected
to the upper pair of double acting hydraulic pumps. Figure 2 is an end elevation of
the said pumps and fittings. Figure 3 is a side elevation corresponding to figure 1
of the lower pair of hydraulic pumps connected to an ordinary duplex pump.
Figure 4 is a plan of Figure 1. In all of these figures similar letters refer to similar
parts.

page_text: A A are the cylinders of a duplex steam or other motor of suitable type whose valves
and parts are so arranged that one piston is commencing its stroke as the other is
completing its stroke so that one or other of the pistons is always in motion. The
piston rods a a impart their reciprocating motion to the four rams bbbb of the duplex
double acting hydraulic pump B B, the said four rams being rigidly connected in pairs
by the side rods b¹¹ in the usual manner. The back ends of each of the rams bbbb
are in direct communication without any valves whatever with the back ends of the
four corresponding rams dddd of a duplex double acting hydraulic pump DD of
similar construction and capacity through the four hydraulic pressure pipes CCCC.
The pump D D may be situated at the bottom of the shaft or in any position con-
veniently adjacent to a duplex pump as shown or to other suitable pumping machinery,
and the rams dddd through any suitable connections impart reciprocating motion to
the pistons or plungers thereof. By this arrangement when all the hydraulic cylinders
and pipes are filled with liquid it is obvious that any motion of one pair of hydraulic
pumps will simultaneously produce motion in the other pair, and the reciprocating
motion of the steam or motor pistons is synchronously imparted to the pistons or
plungers of the ordinary duplex pump E or other working machinery, the adjustment
of the motor pistons before indicated and the steady discharge from the duplex pump
causing the flow through the rising main M to be constant steady and free from the
shocks which occur in pumps constructed in the usual manner.
To provide against inequality of or undue pressure occurring in the pipes or parts
when the rams of either pair of hydraulic pumps are not in the proper and corresponding
positions at starting or other times, and to admit of the proper position being
automatically ensured, escape or relief valves GG loaded with either weights or
springs are placed in suitable position as shown, through which surplus water or water
which may be at the time in the wrong place would be forced, and to replace such
water, or waste occurring through leakage or otherwise from the pump, pipes, or
connections suction valves gg are fixed upon the upper pair of pumps BB, and
connected with a supply cistern K, through which valves water is drawn to balance
any waste and automatically obtain and maintain equality of pressure in the various
parts.
To provide against liability of breakage or damage occurring through undue travel
of the rams d d at starting or adjusting their positions to correspond with the upper
rams bb, the side rods d'd' may be carried through bearings d² upon the cylinders DD,
and spring buffers ss provided thereupon, and upon the side rods screwed buffers s¹
are provided and adjusted to the exact stroke required so that should the rams tend
to travel too far the buffer s¹ taking against the spring s will bring them to rest; or
instead of this arrangement spring buffers may be provided either in the inner ends of
the rams or cylinders for the same purpose.
To prevent irregularity or inefficient working through the presence of air, pet
cocks hh are placed upon those parts of the pipes where accumulation of air would
take place.
I am aware that the use of hydraulic pipes connecting two similar pumps so as to
cause their pistons to reciprocate together is not new but I believe the application
and use of duplex pumps of the Worthington or similar type for the purpose is an
original invention and having now particularly described and ascertained the nature
of this invention and in what manner the same is to be performed, I declare that what
I claim is
1. The hereinbefore described improvements in hydraulic pumping apparatus
consisting of the interposition between a steam or other duplex motor and the pumping
machinery of a pair of duplex double acting hydraulic pumps in direct connection
with one another through pressure pipes and so connected and arranged as to transmit
and impart the reciprocating motion of the said motor synchronously to the said
pumping machinery as and for the purposes set forth.
2. The provision in combination with duplex double acting hydraulic pumps
actuated connected and operating as specified of escape and suction valves for

page_text: automatically controlling and balancing pressure, constructed and arranged substantially
as described and illustrated.
3. In hydraulic pumping apparatus arranged as described the combination with the
duplex double acting hydraulic pump DD of adjustable spring buffers constructed
and arranged substantially as and for the purposes setforth.
4. The combination of parts forming the hereinbefore described improvements in
hydraulic pumping apparatus all constructed and arranged and operating substantially
in the manner and for the purposes setforth.