US1990717A - Boring apparatus - Google Patents

Description

Feb. 12, 1935. T. F. SULLIVAN BORING APPARATUS Filed Oct. 6, 1953 INVENTOR J 44m, ATTORNEY -BORING APPARATUS Iimothy F. Sullivan, San Francisco, Calif.

Application October 6, 1933, Serial'No. 692,406

, I v scams;- {(1255- 4) v V Thisinvention relatestoimprovements in bor drilled by the boring tool. Suitably'secured, as .ingq-apparatus of; the kind adapted for use'in bywelding, to the inside of the", casing atits drilling-wells or holesintheearth; lower end is an inwardly projecting annular The primary object of my inventionis to pro member 5, the purpose or which will be herein- 5' videimproved boring apparatus of the kindcharafter described. 7 1' acterized, embodying a novelly constructed bor- Suspended by a cable 6 within the casing 1' ing tool; an air motor for rotatingthe tool and-a from a Windlass or other suitable hoisting means, dirt receiving bucket positioned directly above is ajmotor 7, of the type operated preferablyby th'e-to'oli 1: 7 compressed air. Compressed airfromasultable. Another object or my inventiorr islto provide source isordinarily supplied tofth'e" motor bye; 1 improved boring apparatus of the kind charac fiexible' conduit 8 and a -'similarly constructed terized which embodies novel means associated conduit 9 carriesthe discharged air from the with an ainmotor forcentering the boring tool motor to the outer atmosphere. Shouldjt'he and tor -preventing the rotation of the motor desired to operate thernotor'in a reverse direc casing during the boring operation. tion the conduit 9 may be employed to supply the 15 i A further object of my invention is to provide compressed air to the motor, and the conduit 8 improved boring apparatus for use in drilling to carry it therefrom. wells, having a novel dirt receiving bucket which The motor casing is considerably smaller in is provided with detachable means permitting circumference than the casing 1, thereby perthe convenient emptying thereof. mitting the rapid and convenient lowering and 20 A still further object of my invention is to raising thereof. Extending outwardly from opprovide improved boringapparatus of the kind posite sides ofthe motor casing are members 10 characterized which is simple and sturdy in conwhich preferably have adjustable end pieces 11 struction, easy to assemble and repair, reliable screwed onto their outer ends. The end pieces under conditions of hard service, and mechaniare adapted to engage with the vertical ribs 2 25 cally efiicient in operation. I of the casing and thereby prevent the motor from Other objects more or less apparent will prerotating. during the boring or drilling operation. sentthemselves or will be specifically pointed ou In the event either smaller or larger size casings in the description to follow. f are employed, the end pieces 11 may be screwed 39 In the accompanying drawing: inwardly or. outwardly so the members 10. are

Fig. 1 is a side elevation of boring .apparatus shortened or lengthened, therebypermitting the I constructed in accordance with my invention, use of the same motor with different size casshowing the associated tubular casing in vertical ings.- The projecting members 10 not only serve section; to prevent the turning of the motor but they Fig. 2 is a section taken on'line 2-2 of Fig. 1; also function to center the boring tool with rei- 35 Fig. 3 is a section taken on line 33 of Fig. 1; erence to opening through the casing and to Fig. 4 is a section taken on the line 44 of cause the motor and the said tool to move down Fig. 1 and; v v wardly in a straight path.

; Fig. 5 is a section taken on the line 55 of ,Suitably connected to the operating mecha- Fig. 2. nismof the motor 7 is a'shaft 12, preferably 40 Referring to the drawing the numeral 1 in square in cross-section, and provided at its lower dicates a tubular, metallic casing, the sections of end with a detachable boring tool generally which are ordinarily lowered step by step as the designated by the numeral 13,. The boring tool drilling or boring operation progresses olownis made up of a cone-shaped auger 14, outwardwardly into the earth. The inside surface of the ly extending inclined cutters 15 which are bolted casing is provided with inwardly projecting verto radially disposed inclined supports 16, and tical ribs 2 at opposite sides, while its outside curved deflector plates 17 also bolted to the supsurface at certain intervals is provided with outports. I wardly disposed projections or fins 3, which or- .Adjustably secured to the shaft 12 as by set y dinarily extend'into the earth and prevent the screws, are two spaced collars 18, between which casing fromturning during the drilling opera 1 is mounted the hub of a spider 19. The outtion. Welded'or otherwisesecured to the beveled wardly disposed arms of the spider are aflixed lower end of the casing is an annular cutter 4 to the top edge of a bucket 20, the bottom edge having a sharp lower edge which permits the of the said bucket being disposed adjacent and casing to be driven downwardly into the hole around the lateral edge of the deflector plates n of the boring tool 13. The deflector plates and the cutters 15 of the boring tool form a bottom for the bucket and serve as supporting means for the dirt which is actuated in an upward direction into the bucket by the said boring tool. The bucket 20 and the spider 19 are made in two sections which are hinged together by hinges 21. Suitable fastening means 22 serves to detachably maintain the disconnected edges of the said sections in close proximity with one another, thereby holding the two parts of the spider 19 in such a position that its hub normally extends around the shaft 12 with its underneath surface resting on the lower of the two collars 18. After the bucket has been filled with dirt which has resulted from the operation of the boring tool rotating in the earth, and the apparatus has been raised above the surface of the ground by reeling in the cable 6, the bucket can be easily emptied by unfastening the fastening means 22 and opening the two sections.

The combined weights of. the motor 7 and the bucket 20 ordinarily produce suflicient downward pressure against the boring tool 13to make the drilling operation successful in most kinds of earth formations. When the bore has reached such a depth that the projecting members 10 of the motor 7 encounter the annular member of the casing, the ordinary practice is then to raise'and empty the bucket and to drive the casing down to a point where the cutter 4 encounters the bottom of the said bore.

It is apparent to those skilled in the art that my invention is susceptible of numerous modiflcations in regard to form, shape and minor details of construction. It is therefore to be understood that the appended claims are to determine the scope of my invention rather than the exact disclosures made herein.

Having described my invention what I claim is:

1. In boring apparatus, a motor provided with a rotatable shaft, a boring tool secured to the shaft, and a bucket secured to the shaft and located above the tool, the said bucket being formed in two sections which are hinged together, each of the said sections having a spider construction, the hubs of which extend around the shaft.

2. In boring apparatus, the combination of a boring tool, a rotatable shaft to which the tool is secured, and a tubular bucket supported by the shaft and positioned to receive material forced upwardly by thetool, the said bucket being comprised of a plurality of sections pivotally joined together each of the said sections having rigid spider members secured thereto, the said spider members having hubforming parts thereon which rest on supporting means carried by the shaft.

3. In boring apparatus, the combination of a motor having a shaft, a boring tool secured to the shaft, a bucket mounted on and extending around the shaft, the bottom edges of the bucket being positioned. around and adjacent the tool and the top end of the said bucket being formed with a spider construction, the, hub of which spider construction detachably embraces the shaft. v

TIMOTHY F. SULLIVAN.

Images