US255928A - Mining-pump - Google Patents

Description

(No Model.)

D. W. BRUNTON.

MINING PUMP Patented Apr. 4.1882.

N. PETERS, Photo-Lithographe wumn mn. D4 0.

Urvrreo STATE DAVID W. BRUNTON, OF LEADVILLE, COLORADO.

PATENT OFFICE.

MINING-PUMP.

SPECIFICATION formingpart of Letters Patent No. 255,928, dated April 4, 1882.

Application filed October 31, 1881.

To all whom it may concern.

Be it known that 1, DAVID W. BRUNTON, of Leadville, Colorado, have invented certain new and useful Improvements in Mining- Pumps, of which the following is a specification.

My invention relates to improvements in mining-pumps used for the purpose of removing water from deep shafts; and the objects of my invention are, first, to pump steadily with a less depth of water in the shaft than has heretofore been possible; second, to provide a means of draining the shaft should the lower valve become broken or injured and covered with water; third, to obtain the advantages of a telescope-section without increasing the suction-lift to a height which would interfere with the perfect working of the pump at the highest altitudes; and, fourth, to obviate the use of the cumbrous and expensive water-tanks at the pump-stations. I attain these objects by the mechanism illustrated in the accompanying drawing, in whicha is the reciprocating rod ofa series of Cornish pumps.

m is the strainer to prevent chips and rocks from clogging the valve 1.

k is a taper valve-seat, slightly smaller than the working-barrel S.

n is an auxiliary valve, which, in case of injury to the lower valve, 1, can be dropped into the seat k, after the bucket-valve J has been drawn out of the working-barrel by removing the jack-head t.

P O is the delivery-pipe to the t'orce'pump above.

h is the foundation on which the workingbarrel b of the force-pump rests.

0 is the plunger, and e and d the valves, of the force-pump.

fis the compensator to receive the amount of water displaced by the downward stroke of the bucket-rod i.

In the mining-pumps heretofore in use the strainer has always been in the form of a hollow cylinder, and to obtain the required area ofstrainer-opening without weakening the cyl inder it has been necessary to have the height of the perforated strainer about three times the diameter of the suction-pipe, and, as the water can only be lowered by the pumps to the (No model.)

level of the upper holes in the strainer, the depth of water in which'men were compelled to work in the bottom of the shaft was, with a ten-inch pump, about thirty inches. Again, the strainer-openings in the side of the cylinder have been necessarily horizontal, and soon became clogged with chips and rocks, hence requiring constant cleaning and attention. With my improved form of strainer m the requisite area of strainer-opening can beobtained in a height for perforations of one and one-half diameter of the suction-pipe, and the strainer-openings incline downward at an angle of about forty-five degrees, and consequently free themselves from chips and small rocks each time the upward flow of water is stopped by the valve Z.

Heretofore the seat for the auxiliary valve n has been placed in a tapered section of pipe above the chamber of the valve 1, thereby raising the auxiliary valve n to a height above the water which rendered it useless at high altitudes. By placing the taper seat for the auxiliary valve n in the upper neck of the chamber containing the valve 1 the distance from the valve-seat k to the water-level is reduced to a minimum.

Heretofore the telescope-join thasbeen placed below the chamber of the valve 1, and as the shaft was deepened the strainer was lowered by sliding out the telescope-joint. This increased the distance between the valve Z and the water-level to a height which rendered the pump almost useless whenever the upper strainer-opening had admitted air. By my improved method of placing the telescope-slide a outside ofthe bucket-working barrel the distance between the working-barrel and the water-level is reduced to a minimum, and the distance between the lower valve, 1, and the water-level remains constant so far as affected by the extension of the telescope-slide.

Heretofore the water from the lift-pump has always been discharged into a tank on alevel with the force-pump, and from the water-tank the water is raised to the surface by force pumps. The amount of cutting necessary to receive the tanks discharge and suction pipes weakens the shaft-timbering in a place where the strength is most requiredviz., at the foundation of the force-pump. In the draw ing the pumps are represented on the downstroke. The force-pumpplunger cis forcing the water from the plunger-barrel I) through the valve dinto the discharge pipe 00. The weight of the column of water in the discharge-pipe 00 keeps the valve 6 firmly seated. As the force-pump plunger 0 and the bucket- IOdi of the lift-pump are both rigidly connected to the reciprocating rod a, it follows that when the plunger 0 is descending into the working-barrel b and displacing a volume of water equal to its cubic contents through the valve 61 the bucket-rod t of the litt-pump is also acting as a smaller plunger, and forces a volume ot' water equal to its cubic contents through the pipe 1? 0 into the compensatorf. By this my improved plan no cutting of the shaft-timbering is necessary, and the nunierous bends in the water-pipe are avoided.

What I claim, and desire to secure by Letters Patent, is-- 1. In a mining-pump, the telescopic extensible section a, in combination with and carrying at its lower end a conical strainer, m, of greater diameter than said pipe u, and provided with perforations opening downwardly, substantially as set forth.

2. In a mining-pump, the working-barrel S, provided with the reciprocating rod and bucket-valve J, in combination with the exterior telescopic slide,u, carrying valve land strainer m, substantially as specified.

3. In a mining-pump mechanism, the forcepump 1) e and a lift-pump below said forcepump, in combination with the connectingpipe 0 and compensating-pipef, allconstructed,arranged, and operated as set forth.

DAVID W. BRUNTON.

Witnesses:

S. D. SILVER, S. 0. BROWN.

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