US727072A - Clay-cutting sand-pump. - Google Patents

Description

PATENTEDV MAY 5, 1903..

' AIJ. BRAMIIETTE. CLAY CUTTING SAND PUMP.

APPLICATION FILED D30. 20, 1898.

NO MODEL.

coy moroumon WASHINGTON n c UNITED STAT S Patented May 5, 1903.

ANDREW J. BRAMLETTE, OF DOYVNEY, CALIFORNIA.

CLAY-CUTTING SAN D-PUMP.

SPECIFICATION forming part of Letters Patent No. 727,072, dated May5, 1903.

Application filed December 20, 1898. Serial No. 699,84=8. (No model.)

To all whom it may concern;

Be it known that I, ANDREW J. BRAMLETTE, residing at Downey, in the county of Los 'Angeles and State of California, have invented a new and useful Clay-Cutting Sand-Pump, of which the following is a specification.

The object of my invention is to provide means whereby well-borers can make rapid progress in sinking through clay, soft shale, or in solid formation and also in packed sand.

My invention includes the improved sandpump and also the cutter with which to transform an ordinary sand-pump into a sandpump embodying my invention.

The accompanying drawings illustrate my invention.

Figure 1 is a view, partly in vertical midsection, of a sand-pump embodying my invention. Fig.2 is a view of the bottom of my newly invented clay cutting sand pump. Fig. 3 is a perspective view of one of the cutters detached.

A indicates the barrel of an ordinary sand pump, having the ring 13 at the bottom in the ordinary manner.

C C G 0 indicate a, plurality of cutters which are duplicates of each other. Any desired number of cutters may be used. In the drawings I have shown a sand-pum p provided with four cutters. These cutters project downward below the ring of the sand-pump.

and extend across beneath the ring. The lower portion 0 of each cutter is curved verticallythat is, in a vertical planeand the cutters are attached to the ring of the pump with all the cutters curving in the same direction, so that when the sand-pump is lowered to strike upon the bottom of the well the cutters will tend to cause a slight rotation of the pump as the cutters areinserted into the earth at the bottom of the well. Then when the sand-pump is drawn up the cutters pull up that portion of the earth at the bottom of the well which is above the edge of the cutters, and by repetitionof the vertical operation of the sand-pump the material becomes cutinto small pieces and passes on up through the valve and into the barrel of the sandpump. The cutters widen downwardly to ward their inner edges, the flaring being on the inner edge 0 of the cutter, the outer edge 0" of the cutter being in a plane which is praotically parallel with the axis of the pump.

1 indicates a shoulder above the bit 2 of the cutter at the base of the shank 3, by which the cutter is fastened to the ring. The shank 3 is preferably an angle-iron, being bent into an angle in cross-section, and the flange 3 thereof is provided with rivet-holes 4, through which are inserted the rivets 5, by which the shank is riveted to the-ring. The shoulder on the cutter is of such a depth that when the cutter is in place the edge of the ring will be in a vertical line above a point intermediate the ends of the cutting edge, thereby avoiding the strain upon the cutter that would be caused by having the force applied at either end of the blade. This permits of the cutters being formed from very thin material, as almost the entire strain upon the cutter comes in a vertical direction or endwise of the cutter. The upward taper of the inner edge of the cutter gives more room than would be the case if the cutter extended full width from the blade to the top, and yet does not weaken it to any perceptible extent.

If desired, the lower end of the flange of the cutter may be bent or curved outward to fit the beveled edge of the ring and prevent the earth from lodging therein. By bending the flange at substantially a right angle to the shank and securing it to the ring the blade of the cutter does not point directly toward the center or axis of the pump, but a littleto one side of it, thereby causing a greater rotation of the pump or drill at each stroke and also permitting of cutters being used that do not reach to the center of the pump, as the core or portion of earth between the ends of the cutters will be broken up by the action of the peculiarly-formed cutters.

The improved sand-pump is provided with the ordinary valve V and is used in the same way as an ordinary sand-pump.

The cutters are to be made of difierent sizes for different-sized sand-pumps and may be kept in stock by dealers and well-borers, and when the formation is such as to require their use the appropriate cutters will be riveted to the sand-pump to be used. By cutting the rivets they may be removed to be replaced by new cutters when desired.

New, having described my invention, what substantially flat sheet of material; the lower I claim as new, and desire to secure by Letters end or blade of which is tapered to an edge 15 Patent, is and curved vertically and the upper portion 1. A sand-pump comprising the barrel and or'shank is flanged or angular in cross-sec- 5 ring; and a cutter consisting of a sheet of mation, the outer edge of the cutter being shoulterial, the lower end of which is curved verdered and the inner edge being inclined from iically and the upper portion of the shank is the inner edge of the blade toward the upper 20 flanged 0r angular in cross-section and the end of the shank.

outer edge is shouldered toward the inner no edge, said shoulder being seated against the ANDREW BRAMLETTE' ring and the shank fastened to the inside of Witnesses: the ring and barrel. JAMES R. TOWNSEND,

2. A cutter for sand-pumps comprising a E. M. TOWNSEND.

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