US1352172A - Drill-retriever - Google Patents

Description

J. D. BRANDON.

DRILL RETBIEVER.

ATION FILED 1mm Patented Sept; 7,1920.

UNIT

Fries.

JARVIES DANIEL BRANDON, 0F LANCASTER, OHIO.

DRILL-REFIBIEVEB.

Application filed January 15, 1920. Serial No. 351,734.

To aid 207201722? may concern:

Be it known that I, JARVIES DANIEL BRAN- DON, a citizen of the United States, residing at Lancaste in the county of Fairfield and State of tain new and useful Improvements in Drill- Retrievers, of which the following is a specification.

This invention relates to an improved drill retrieving tool, and has for its primary object to provide a substantial, reliable and effective tool for the purpose of facilitating the removal of adrill from a boring or well sliaftin a substantially automatic and positive manner.

In the art of well drilling, it frequently occurs that a drill will become accidentally released from engagement with its actuating and supporting cable, in which event the drill drops to the bottom of the well and if the latter is of a relatively con siderable' depth, it is a matter of considerable inconvenience and difliculty to successfully and easily retrieve the lost drill, in asrnuch as thelatter is frequently embedded in the bottom of the well or shaft and its elevation is accordingly rendered extremely difficult.

The present invention provides a tool which is of such construction as to be capable of being lowered into a well or shaft, and embodies features of grip upon the shank of a drill situated in the bottom of the shaft, whereby upon the elevation of the tool, saic in a tool or drill retriever of the aforesaid character which consists essentially of a' drill may be readily positioned within said bore. and the openings of said ring members upon downward movement on part of the tool, however, upon the elevation of the tool said ring members will be anguhio, have invented cerconstruction which enables the tool to obtain a positive drill will be automatically and firmly'locked thereto and its elevation quickly and easily performed,"

Another object of the invention resides larl-y disposed by engaging with the in- ;clined walls of said sockets, thereby caus ingthe walls of said ring openings to frictionally engage with said drill in such manner that the latter will be securely, automatically and positively held within the tool during theelevation of the latter.

A further object ofthe invention resides in positioning said ring members so that the latter will assume angular positions with respect to each other, thereby causing said drillto be centered within the body of the retriever and to relieve the latter of extensive stress upon any one partthereof. Other ob eots of the invention reside in constructing the body of said retriever in two parts'so that the internal members of the 'tool' may berendere'd readily accessible and their OPGIMJIVQ positions securely maintained, in providing means forreadily connecting the tool to raising and lowering -mechanism, in securely connecting thetwo parts of the tool body together, and in zrorming said ring 'members so that the walls defining the openings thereof may be caused to exert amaximum gripping action upon an associated drill.

With these and otherobjects in View, as will appear as the description proceeds, the invention accordingly consists in the novel features of construction, combination of elements and arrangements of parts, hereinafter to be fully described andto have the scope thereof pointed out in the appended claims.

In the accompanying drawing, forrning a part of this specification, and in which simicorresponding parts:

Figure 1 is a sideelevation of the improved la-r characters of reference denote like and drill retrieving tool comprising the'present invention. V

Fig. 2 is an enlarged elevation of half of the tool, the other half being removed for the purpose of more clearly disclosing the interior construction.

Fig; 3 is a similar view of the opposite or I removed half. a

Fig. tisa sectional View taken along the plane disclosed by the line 4 l of 2,

both halvesof the tool body, however,be- 'ing shown in assembled relationship.

Fig. 5 is a similar view taken'along the plane disclosed by the line 55 of Fig 2,

and,

Fig, 6 ma fragmentarysectional View taken through one of the ring or washer members. 7 s

Referring more particularly to the details of construction of the preferred formof the improved drill retrieving tool comprising the present invention, the numeral 1 designates the tool in its entirety. As shown, this tool consists of a body portion of elongated cylindrical formation which maybe formed from any suitable material. Preferably,

, the body of said tool is formed to include a pair of separable sections, which are indi- V cated by the numerals 2 and 3. Each of the sections is provided with an elongated semi circular groove 1, whereby when the sections are assembled, said grooves will register to provide a longitudinally extending here within the tube, which bore is adapted to receive the shank end 5 of a drill or other similar device which a-tool 1 is adapted to' retrieve. V V

' To hold the sections together in a positive and rigid manner, the main section 2 is provided with a plurality of offset ribs 6, be-

tween which grooves are provided for the recept on of t n ues 7 provided upon the auxiliary section 3. By this construction it will be obvious that relative longitudinal movement between the sections will be effectively precluded. Further, the upper and lower ends of the sections 2 and 8 are provided with registering transversely extending openings 8 which are adapted to receive holding screws orthe like 9, which act to retain said sections in their assembled con: dition and preserve the holding arrangement of theriband tongue construction 6 and 7.

The upper end of the tool is provided with af reduced threaded stud 10, which may be threaded into a socketformedin acable carryingmember 11, the latter being indicated by dottedlines in Fig. 1.' I By attaching the tool to the member 11, the operation ofthe former may be conveniently controlled, as it will be apparent that the tool may be raised or lowered within a well or shaft. Wrench receiving surfaces 12 are also provided upon the'upper end of the tool for the purpose of 1 facilitating theinsertion of the stud. 10 into i. 50

the socket of the holding member.

Rererring now to the more essential features of the invention, it will be observed upon reference to Figs. 2 and 3, that each of the sections 2 and 3 is provided with a plu ralityofring receiving sockets 13, which are j adapted to register when the sections are in their assembled form." These sockets are adapted to transversely intersectthe drill receiving bore and the'axis of said bore is common to the sockets 13. It will be ob-,

served that said sockets are formed with fiat horizontalv walls 14 which are disposed on the plane at right angles to the axis ofthe drillbore, and that the oppositewalls of said 7 sockets are relatively inclined as shown at ing of the tool other,

15. These sockets are adapted to receive a plurality of ring or washer members 16, which are provided with central drill receiving openings 17, said openings being disposed to aline or register with the drill bore. In operation, a drill which becomes broken or disengaged from its actuating cable and falls to the bottom of a well or shaft, may

be retrieved by thelowering of the tool 1 into said shaft. It will be observed that the lower end of the bore iswidenedor flared as at 18 in order that the shank end 5 0f the drill will be caused to pass into said bore upon the lowering of the tool 1. It has been found that by so flaring the'open end of the bore, very little difficulty is encountered in the positioning of the drill within said bore, and this proper positioning of'the drill may be determined by the arresting of the downward movement on the part of'the tool 1. The openings 17 are also of suchdiameter as to'permit the drill 5 to readily pass therethrough, and furthermore upon the lowering of the tool '1, said washers will be forced against the flat walls 1 1 of'the sockets 13, thereby permittingthe drill to pass therethrough without encountering undue friction. Now, upon the raisit will be manifest that said drill will tend 1 so as to elevate the drill 5,

to escape or pass out of the tool bore. 'QThis action, however, is prevented by the washers or ring members 16, which assume the relatively, angularpositionsshown on account of the inclined walls 15 of the sockets'lfj. This inclination of the washers causesthe opening walls of the latter to frictionally engage with the sides of the drill 5 so that the release of the latter from; engagement with the tool is positively prevented during the upwardmovement of said tool. The arrangement of the washers is such that their gripping pressure will increase in direct ratio to the weight or resistance offered by the drill duringelevation of the tool 1. 7 It will thus be manifest that'the mere, lowering of the tool 1 will cause the drill 5 to enter the reception bore formed inthe' tool, 7 and that said drill will be firmly locked in; r

position for upward movement by the peculiarv arrangement and constructlon of'the members 16; Furthermore, by causing the washer members to assume the relatively rib and tongue construction, security is ob tainedlin assembling of the sections; The

tool is substantially automatic in operation and therefore requires but a minimum amount of manual attention in eifecting its functions.

What is claimed is:

l. A drill retriever comprising a: body portion having a longitudinally extending open ended bore formed therein, said bore being longitudinally intersected by a plurality of ring sockets, and a plurality of angularly disposed clamping rings loosely positioned in said sockets and situated substantially in alinernent with said bore, whereby said rings will be enabled to frictionally grip and retain the shank of a tool positioned within said bore.

2. A drill retriever comprising a body portion having a longitudinally extending open ended bore formed therein, said bore being longitudinally intersected by a plurality of ring sockets, each of said sockets comprising a substantially flat upper wall and an angularly disposed lower wall, and a plurality of relatively angularly disposed clamping rings loosely positioned within said sockets and situated substantially in alinement with said bore, whereby when a drill is forced into said bore, said rings will be pressed toward the upper flat walls of said sockets, and upon upward movement on the part of said retriever, said rings will lie contiguous to the lower inclined walls, thereby obtaining a frictional grip upon said drill.

3. A drill retriever comprising a body portion formed to include a plurality of separable complemental sections, said sections being provided with registering grooves constituting a drill receiving bore, said bore being longitudinally intersected by a plurality of registering ring sockets formed in said sections, and a plurality of relatively angularly disposed clamping rings loosely positioned within said sockets and operative upon the raising of said retriever to fric tionally grip a drill positioned within said bore.

In testimony whereof I aliiX my signature.

JARVIES DANIEL BRANDON.

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