US510880A - Drilling machinery - Google Patents

Description

` (No Model.) 3 Shets-Sheet 1.

l M BBMV DRILLING MACHINERY.

atented Deo. 19, 1893.

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' 3 Sheets-Sheet 2. M. BML.v DRILLING MAGHINERY.

Patented' Dec. 19, 1893.

W ff 3 Sheets-Sheet 3,

MQBBAL. DRILLING MACHINERY.

Patented Dec. 19, 1893.

Hill:

(NovModel.)

Nr'ru STATES ATENT Fries.

DRILLING MACHINERY.

SPECIFICATION forming part of Letters Patent N 0. 510,880, dated December 19, 1893. Application filed July 26, 1892. Serial No. 441.308. (No model.)

of the earth in the form of cores which may be extracted, inspected, and preserved, as deslred, and my invention consists in certain features of construction and in combination .of parts hereinafter described and pointed holder against rotation with the drill.

out in the claims.

In the accompanying drawings, Figure lis a central longitudinal section, with the stem of the core-holder in elevation, showing the means employed for positively holding the core-holder against rotation with the drill and the means employed for preventing leakage of water at the drill-stem and` stem of the core-holder. Fig. 2 is a View in perspective of the means employed for locking the core- Fig. 3 is a central longitudinal section of the coreholder in position within the drill. Fig. 4 is an elevation of the core-holder. Portions are broken away in the foregoing figures to reduce the size of the same and to illustrate more clearly certain features in the construction. Fig. 5 is a central longitudinal section of a portion of the core-holder, partly in elevation, exhibiting a Weight to hold the core compact. Fig. 6 is a transverse section on line 6-6, Fig. 3, looking downward. Fig. 7 is a perspective of one of the bits or cutters. Fig. 8 is a side elevation of the driving-mech'- anism. Fig. 9 is a top plan of rotating wheel E of the driving-mechanism, showing the stems of the drill and core-holder in trans- Verse section. Fig. 10 is a vertical section of Fig. 9, without the stems of the drill and core-holder. Fig. 1l is a side elevation-in longitudinal section of the lower portion of a core-extractor suitable for extracting hard minerals or substances Figs. 9 and lO are .somewhat enlarged relative to Fig. 8, and the remaining figures are considerably more enlarged. l

Referring to the accompanying drawings, A represents the drill-barrel that, at its upper end, is reduced in diameter, as at A', and screw-threaded externally for screwing the same into the corresponding internally screwthreaded lower end of the drill-stem B.

The driving-mechanism may be of any suitable construction and is preferably as follows:

C represents the supporting-frame; D the driving-shaft journaled in boxes d d and D' the driving pulley mounted on said shaft.

E represents a rotating-Wheel provided with bevel-gear e in mesh with bevel-gear D2 operatively mounted on the driving-shaft. The lower end of this wheel is provided with an arbor e', which rotates in a thimble or casing F supported by frame O.

Wheel E is centrally perforated with the perforation enlarged at its upper end, to form a seat e2 for half-rings G, that have one or more laterally-projecting arms or members g engaging corresponding recesses in the drill- Wheel and provided with one or more inwardly-projecting lugs, tongues or keys g engaging corresponding grooves or recesses in the drill-stem, by which construction the drillstem is operatively connected with the drillwheel, and by removing ring-sections G, the

drill-stem and attached drill-barrel and contents rnay be lifted with the core made by the drill up through the drill wheel.

Drill-stem B, at its upper end, is connected by means of a coupling, B', with a pipe or tubular section B2, that at itsupper end is externally screw-threaded to screw into the correspondingly internally threaded coupling or member, b, the longitudinal opening whereof yis enlarged at its upper end, as at b', forming a seat b2 for an external annular flange, I', at the lower end of tubular or pipe-section I, the enlarged portion h of the longitudinal opening of member b being internally screwthreaded at its upper end to receive the correspondingly externally screw-threaded portion of gland b3 that [its tightly around pipesection I and adapted to compress packing, b4, interposed between said gland and flange I', therebyv preventing leakage at this point and securely locking pipe-section I to member h, but member I being irrevoltible with the drill-stem.

J represents a pipe or tubular section connected with pipe-section I by means of a T, J an elbow J2 being attached to lateral member J3 of T J', and a pipe or tubular section J, over which the water-supply hose (not shown) is slipped, being attached to elbow J2.

K represents the core-holder. The coreholder at its upper end is reduced in diameter, as at K', and the upper end of said reduced portion is externally screw-threaded for engaging the corresponding internally screwthreaded lower end of stem K2 that extends upwardly through the stufng-box L secured to the upper section of pipe J, and up through clamp-boxes M, and terminates at its upper end in a handle K2.

There are provided apair of clamp-boxes M that are clamped against stem K2 by means of bolts M that extend through boxes M at opposite sides of said stem. Boxes M are connected wit-h stuffing-box L by means of straps m. These clamp-boxes are adapted to clamp against stem K2 and prevent the latter and attached core-holder from turning or rotating with the drill-stem.

N represents the stock carrying the bits or cutters 'n of the drill and is screw-threaded externally at its upper end for screwing into the corresponding internally screw-threaded lower end of the drill-barrel. Stock N at its lower end is slotted at suitable intervals, as at N2, the slots heilig' open at the bottom and the side-walls thereof being undercut and adapted to receive between them the correspondingly shaped cutters or bits n, the cutters or bits being held to their seats preferably by means of wedges n' driven into slots N2 above the bits, as shown, and the sides of the cutters or bits, as shown in Figs. 3 and 7, are milled or roughened by means of which, in conjunction with wedges n', the cutters or bits are so iirmly held to their seats that there is no liability whatever of their displacement.

Drill-barrel A is provided with internal projections or shoulders, a a2 that serve to hold the core-holder centrally within the drillbarrel and prevent the core-holder from swaying laterally into contact with the body of the drill-barrel.

As already indicated, the water for the lower end of the drill is introduced at T J through the hose or water-supply pipe attached to pipe section J3 and thence passes down the drill-stem into the drill-barrel and through perforations or openings 7c in the upper end of the core-holder into and down the core-holder and drill-barrel into channels or grooves N3 on the inner side of stock N to the lower extremity of the drill, the water from between the core-holder and drill-barrel passing into stock N through openings or perforations 7s', arranged at suitable intervals at the lower end of the core-holder.

As indicated in the preamble of the specication the core-holder and drill are removed together `from the bore made by the drill, and my apparatus is more especially designed for obtaining complete cores or specimens of the entire vein or strata through which the drill is passed, the core-holder being sufficiently long to receive such a core or specimen.

The core-holder shown in Figs. 3 and 4 is more especially designed for ores or materials that are soft and that may be easily crushed or crumbled, such for instance, as coal, and a weight, as at O, (see Fig. 5) is preferably provided, the same being suspended within the core-holder by means of a cord or rope P attached to the upper end thereof, as at P', and extending up through the stem of the core-holder, said weight being adapted to rest on the top of the core and compact the core within the core-holder. Veight O has preferably a semi-spherical depression or cavity O', in its lower end adapted to accommodate any unevenness or irregularity of the upper end of the core, and has preferably a laterally-projecting lug O2, that proj ects into slot K4 in the side and extending lengthwise of the core-holder whereby the weight is prevented from turning within the core-holder and any twisting of the cord or rope to which it is attached is avoided.

To positively hold the core within the coreholder in removing the apparatus from the vein or strata of ore or material into or through which the same has been passed, I provide preferably two or more springs Q at suitable intervals about the core-holder, said springs being attached at their upper end to the barrel of the core-holder, as at Q, and being gradually increased in thickness, as at Q2, at and toward their lower end, the barrel of the core-holder adjacent said spring being slotted, as at K5, and the springs at their lower end being provided with one or more inwardly-projecting teeth, Q3. The enlarged or wedge-shaped portion Q2 of the springs in normal position of the core-holder, as shown in Fig. 3, extend below an internal annular flange or shoulder, a2, of the drill-barrel. The

IOO

drill having been passed through the vein or strata of which it is desired to obtain a complete core or specimen, upon lifting the coreholder more or less, by means of handle K8 at the upper extremity of the stem of the coreholder, the enlarged or wedge-shaped portions of springs Q are brought into engagement with internal shoulder or flange a2 of the drill-barrel, causing the springs to be pressed inward and causing the inwardly-projecting teeth Q3 thereof to engage and. out into the core and iirmly take hold of the latter.

The drill-barrel is preferably recessed, as at as to accommodate the location of the enlarged or wedge-shaped portion of springs Q.

By the construction hereinbefore described upon the removal of the apparatus from the bore in the vein or strata of ore or other material, the core-holder containing the core may be readily detached, it being merely necessary to remove stock N from the lower end rel of the core-holder from the stem of the.

core-holder, ythe core-holder and contents are removed downward through the lower end of the drill-barrel.

By means of slot K4 in the side ot' the barrel of the core-holder the core or specimen may be examined without removing same from the core-holder.

The core-holder and extractor hereinbefore described as already indicated is more especially designed for soft or easily crushable ores and material, such, for instance, as coal and is not adapted for extracting hard minerals or substances, such, for instance, as marble or granite.

For extracting materials that will not easily crumble or be crushed I provide the core-extractor, exhibited in Fig. 11. This core-extractor is substantially the same as that already described excepting that instead of springs Q with inwardly-projecting teeth Q3, I provide springs, as at R, the same being secured to the outside of the core-holder and thence bent inwardly, as at r, into the interior of the barrel of the core-holder, and thence extending downwardly and laterally as at r', the barrel of the core-holder being slotted to accommodate the location of said spring or springs. This core-holder is adapted for use in removing the core after the drill has been removed. In lowering the same into the bore made by the drill member o" of the springs will be pressed outward by engagement with the sides of the core, whereupon the tension of said spring will cause the same to firmly take hold of the core and enable its extraction, the angle formed at r2, more or less cntting into the core.

What I claim isl. The combination with the hollow drillstem, a hollow section irrevolubly connected with the upper end of the drill-stem and having a lateral opening for the admission of' water, and the stem of the core-holder passing up through the drill-stem and said irrevoluble section, of clamp-boxes adapted to tightly tit or clamp against the stem of the core-holder and rigidly connect it with the aforesaid irrevoluble section, substantially as set forth.

2. The combination with the tubular or hollow drill-stem, a tubular or hollow section, as at I, irrevolubly connected withv the upper end of the drill-stem and having a lateral opening for the admission of water, core-holder-stem passing up through the drill-stem and said irrevoluble section, and a stuffing-box around the core-holder-stem and said irrevoluble section, of clamp-boxes,as at M, adapted to tightly lit or clamp against the stem of the core-holder, and straps, as at m, supporting said clampboxes and secured to the stuffing-box aforesaid, substantially as shown and described.

3. The combination with a core-holder, and extractor having openings in the side Walls of its lower end, and springs secured to the holder adjacent to the openings and projecting over the openings at their free ends, said springs having teeth on the inner face of their free ends and gradually thickened downward on their backs, of a drill barrel having an internal annular ange against which the thickened portions of the springs are adapted to be forced whereby to push the teeth inward, substantially as set forth.

4. The combination with thecore-holder, of a weight, as at O, located within the coreholder and adapted to rest on top of the core and compact the same, substantially as set forth.

5. The combination with the core-holder provided with a longitudinal slot in the side, of a weight, as at O, located within the coreholder and adapted to rest on the top of the core, said weight having a laterally-projecting lug or member, as at O2, and a concavity as at O in its lower end, substantially as and for the purpose set forth.

6. In a core drill, the combination with a holder having undercut'slots, of bitsor cutters the sides whereof are milled or roughened and wedges, substantially as set forth.

In testimony whereof I sign this specification, in the presence of two witnesses, this 24th day of May, 1892.

MOSES BEAL.

lVitnesses:

C. H. DORER, WARD HOOVER.

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