US1117424A - Plunge-bucket well-digger. - Google Patents

Description

G. L. MURRAY & A. W. GREELMAN.

PLUNGE BUCKET WELL BIGGER.

APPLICATION FILED MAR.. 3, 1911.

Patented Nov. 17, 1914.

W ,y mw W m u UNITED vSTATES P ATENT OFFICE.

GEORGE L. MURRAY V.AND ASHMORE W. CREELMAN, F BIG SANDY, MONTANA.

PLUNGE-BUCKET WELL-BIGGER.

`Specication of Letters Patent.

Patented Nov. 17, 1914.

Application led March 3, 1911. SeriaI No. 612,132.

k have invented certain new and useful Improvements in Plunge-Bucket WellDiggers, of which the following is a specification.

This invention relates to plunge bucket well diggers.

Our object is the provision of a simple, strong and durable well digging tool which may be easily operated by hand and will rapidly work its way downward even in stiiil clays.

The invention consists of a cylindrical,

. tubular member provided at its lower end with a circular cleaving edge, a wooden bushing secured within the tubular member abovelthe=cleaving edge, and a iap valve, combined in the manner hereinafter set forth.

In the accompanying drawings :-Figure 1 is a vertical section, the same being broken away; and Fig. 2 is a cross section on line 2-2, Fig. 1.

The body of the tool 1 is tubular and of suitable length and diameter, having its lower endsharpened to provide the annular edge or knife 2, above which is an internal fillei, preferably ablock of wood, 3 having a conical interior 4, the lower end 5 of the filler terminating a short distance, preferf ably less than an inch, short of the lower or cutting edge 2. The body 1 constitutes a bucket or chamber 6 above the filler 3 and f there is provided a suitable valve 7 adapted to open upwardly into said bhamber and to close the upper open end 8l of the conical bore of the filler 3. In thelupper part of the body 1 is a coupling 9which has external screw-threads by which it'. is connected 'at 10 to the said body, and has internalscrew-threads 11 with which engage screw- Ythreads on 4'a pipe 12 of suitable length The Ahole having been started in the ground, water is run into the said hole and finds its Way to the cutting edge 2 at the bottom. The digger is then raised a suitable distance, say a foot or so, and dropped;y

whereupon the cutting edge 2 sinks into the soil which has been softened by the water and a core of soil, gravel, sand or Clav which is cut by the edge 2 passes up into the conical interior 4. Upon raising the digger, the previously cut core loosens and f-alls, chieiiy by suction. Upon again dropping the dig' ger, the previously cut core, mingled with, and more or less softened and disintegrated by the water, is forced up through the end 8 past the valve 7 which opens to permit the assage thereof, and flows into the containlug chamber or bucket 6. Upon again lifting the digger, the weight of the material in the bucket 6 causes the valve 7 to close. Successive reciprocations continue to cause cores to be cut and disintegrated and forced up into the'bucket 6 and pipe 12 until the latter is suitably filled to its to whereupon the tool is hoisted to the surface and emptied. Any overflowing water passes up through the tubular stem 12 and out over the outer end thereof and back into the well.

We have found in practice that with a body or barrel 1 of say four inches in diameter and about a foot in length and a stem 12 of about eight feet in length and two inches in diameter, an able-bodied man working the n device by hand, can cut down through stiff clay at the rate of aboutl ten feet an hour.

Having thus described our invention, what we claim as new and desire to secure by Letr ters Patent, is

GEORGE L. MURRAY. ASHMORE W. CREELMAN.

Witnesses: l ALEX. S. CHRISTIE, ANDREW ELDEPHAN.

Images