Telescopic drill-shaft.



N0. 656,5l5. Patented Aug. 2|, |900. N. &.w. J; cAsslTY. .TEL-ESCPIC DRILL SHAFT. (Application filed Sept. 26, 1899.) (No modem 2 sheets-het mus Pneus co. wom-umn.. wAsNmcaN. n. c. 4 Patented Aug. 2|, |900. N; W. J. CASSITY. TELESCOPIC DRILL SHAFT. 2 Sheets-Sheet 2. (Application filed Sept. 26. 1899J (No Model.) me ohms Farias so. Pnoroumo., wAsHmsYoN. n` c. UNITED STATES ,PATENT OFFICE. ISAAC N. CASSITY AND WILLIAM J. CASSITY, OF IIOLTON, KANSAS. TI-:LEscoPlc nmLL-SHAFT. i SPECIFICATION forming part of Lettersatent No. 656,515, dated August 21, 1900. ` lApplicata@ filed sepiemberz, 1899. serial No. 731.767. oto man.) To @ZZ whom t may concern: Beit known that we, ISAAC N. CAssITY and WILLIAM J. CAssITY, citizens of the United? States, residing at Holton, in the county of Jackson and State of Kansas, have invented a new and useful Telescopic Drill-Shaft, of which the following is a specification. This invention relates to well-boring Inachinery in general, and more particularly to the boring-shaft thereof; and it has for its object to provide a shaft which involves less labor in its operation than is ordinarily the case and one which isf-.veli adapted for operation either by hand or machinery. With the present invention the sections are made telescopic and the drill-rope is attached to the lowermost section, so that the act of drawing the shaft from the well will pass one section into another, while by releasing the rope the sections will slide outwardly to the proper distance. In the drawings forming a portion of this specification, and in which similar numerals of reference designate corresponding parts in the several views, Figure 1 is a perspective view showing the boring-shaft in its position with respect to the derrick. Fig. 2 is an ele-A vation of the shaft with the bit in place and with the sections extended. Fig. 3 is a ver` tical central section of Fig. 2, the rope-clutch being shown in elevation, as also the rope, the bit being omitted and the turning-yoke being shown in dotted lines. Fig. 4 is a section on line 4 4 of Fig. 2. Fig. 5 is a detail section of the rope clamp or clutch, the clutching-lever being shown in elevation. Fig. 6 isa detail perspective of a portion of one of the telescopic sections. Referring now to the drawings, and more particularly to Figs. 2 to 6, inclusive, the shaft is shown as comprising three telescopic sections 410, 11, and 12, of which the lowermost section 12 is perforated transversely at 13 for the attachment of a bit 14 of the usual construction. At the lower'end of each of the sections 10 and 11 is formed an inwardly directed ange 15, having radial slots 16, as shown in Fig. 6. These slots areadapted to receive the longitudinal ribs 17 of the next smaller section, the upper end of each section 11- and 12 having a head 18 to prevent total downward displacement. A stirrup 19 `is swiveled to the head of the section 12, and to this stirrup is fixed one end of the drillrope 20, which passes upwardly and through the remaining sections and is supported by a derrick 21, of usual construction and shown i in Fig. 1 of the drawings. In order to hold the sections at dierent points of their adjustment to lengthen or shorten the boring-shaft, a clutch is formed for the rope 20. This clutch is carried by a cap 25, fitted in the uppermost end of the section 10, and which cap has a central tubular extension 26, through which the drill-rope is passed. A ange 27 is formed upon the upper end of the tube 26 and is slotted radially to aline with a longitudinal slot 28 in the eX- tension 26. Pivoted in the slot of the flange 27 is a clutch-lever 30, having a cam-face 3l, adapted to engage the drill-rope 2O and to clamp it tightly when the lever is operated. 'The uppermost section 10/ has also the longimounted upon the derrick-frame 38, and adapted for rotation through the medium of suitable gearing, as shown. seen that when it is desired to bore with this shaft the bit 14 is put in place, and the lower end of the shaft having been entered into the hole that is to be deepened the rope 20 is paid out until the bit strikes the earth. The clutch-lever 30 is then operated to hold the shaft against further downward movement, and the arms 34 having been engaged with the pins 36 the gear 37 may be rotated to cor-` respondingly move the drill-shaft and to op-, crate the drill. may be paid out, and when it is desired to withdraw the drill the rope is Wound in and the sections are moved one into another and the top section is finally lifted from the hole. If desired, the arms 34 Inay be raised to permit the shaft being rotated by hand, and if desired the facegear and its mechanism may be omitted. It will thus be4 As the Ahole deepens the rope the invention. It willof co urse be understood that in practice the several sections may be made of any desired length and material, they may be ofv any number, and other modifications maybe made without departing from the spirit of Also the boringshaft may be employed with any style of derrick or other mechanism to which it is adapted. 1. A boring-shaft comprising hollow telescopic sections and a drill-rope passed through the sections and connected with the lowermost section, to support the shaft, to adjust the sections with respect to each other and to raise and lower the shaft bodily. 2. A boring-shaft comprising hollow sections telescopically connected, means for preventing rotation of the sections with respect to each other throughout their mutual ad-Y` justments, and a single rope passed throughthe sections and connected with the lowermost section and means for clamping the rope to the uppermostsection, whereby the several sections may be adj usted with respect to each other, the shaft may be supported and the shaft may be bodily adjusted. 3. A boring-shaft comprising telescopic sections all of which are hollow, means for pre'- venting rotation of the sections with respect to each other at all points of their telescopic adjustment, a single rope passed through all the sections and connected with the lowermost section, and a clamp carried by the uppermost section and adapted to clamp the rope thereto, whereby said rope may be employed for raising and lowering the shaft, for adjusting the sections with respect to each other and for supporting the entire shaft. 4. A boring-shaft comprising hollow telescopic sections, means for the attachment of a bit to the lowermost section, means for the attachment of a rope to the lowermost section a single rope passed through the sections and connected with the lowermostsection through the medium of the attaching means, means for holding the sections against rotation with respect to each other through their telescopic movements, a rope-clamp carried by the uppermost section for engaging the rope to permit adjustment of thev sections, to permitv bodily movement of the shaft upwardly and downwardly and to support the shaft, and means slidably connected with theuppermost section for rotating the shaft. In testimony thatwe claim the foregoing as our own we have heretoaffixed our signatures in the presence of two witnesses. ISAAC N. CASSITY. Y WXLLAM J. CASSITY. Vtfitnesses: i `J. S. KENOYER, SAML. H. NEWELL, Jr.



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    US-3073134-AJanuary 15, 1963William L MannVariable length pipe
    US-3517760-AJune 30, 1970Delmag MaschinenfabrikTelescopic drill rods for soil drilling equipments
    US-3792741-AFebruary 19, 1974Hercules IncJet spalling assembly and drill-spalling rig