US1056295A - Drill-rope coupling. - Google Patents

Description

Patented Mar. 18, 1913.

` 2 SHEETS-SHEET z.

W. W. PARMETER.

DRILL ROPE GOUPLING.

/ .f 'SSES "UNTFSD STATES BRILL-ROE COUPLING.

Specification of Letters Patent.

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Application filed August l5, 1910. Serial lmi''ti'.

To alt whom 'it may concern Be it known that l, lVALLAon lV. Pan- Mnrnn, a citizen of the United States, residing at. Eldred, in the cuinty of lliclean and State oi Pennsylvania, have invented new and useful Improvements in Drill-Rope Couplings, of which the following is a speci tication.

This invention relates to couplings designed 'to secure cables to tools, and especially to secure the Wire or other cables to drills and the like used in boring Wells, and is in the nature of an improvement upon the construction described and claimed in Tnited States Letters Patent No. 890001 granted to Ine June 9, 1908. p

The general object otl the present invention is to simplify, cheapen and improve the operation oi the construction shown in the patent referred to.

In the construction described and claimed in iny priorl patent, the cable was prevented from slipping too :tar lthrough the drill end of the coupling by the 'tool itself and lthere Was some liability of the occurrence ot this slipping when the tool was' detached.

A special obj ectof the present invention is to avoid this diliculty and to secure the coupling to the cable that they Will be held together just as rigidly when the tool is detached as when it is attached to the coupling.

lll/lith these objects in view the invention consists in the improved construction, arrangement and combination of parts hereinafter fully described and afterward spe'ciiically pointed out` in the appended claini.

l have illustrated one embodiment ot my invention in the accompanying drawings, in which:

Figure 1 represents a view in side elevation, the cable being' shown secured in the coupling. Fig. 2 represents a sectional view taken on a dianieti'ic pla-ne passing through the device of Fig. 1. Fig. 25 represents in perspective. onesection otl the core, looking at the interior thereof. Fig. 4 represents a .similar view of one of the clamping ineinbers. Fig. 5 representsl a transverse sectional vieiv on an enlarged scale, taken on the plane indicated by the broken line 5 in Figs. 1 and 2.

Like reference characters marl: the saine parts in all of the figures of the drawings. Referring specifically to the drawings, 13 indicates thc' tubular body portion creasing of my coupling preferably partially of angular outward form, as at 7, to facilitate the application of a Wrench or holding tool, and

having a central longitudinal bore or open# 1ng8 extending through it- Which increases i in diameter gradually from the op to point indicated at `9 and from-this point to the bottom more' abruptly, the pitch increasing materially atsaid point 9. That part of the bore from the top to the point 9 is smooth but that portion beloa7 that point may be threaded `or otherwise prepared to receive a suitable boring crl other tool to be suspended from the cable (not shown).

At 10 is indicated a tubular core conically tapered, increasin in diameter' tromthe top tothe bot-torn with preferably about the same pitch as thatportion of the bore or opening 8 above the point 9 and of a gpreater length than that part of said bore, the f- ,greater portion of its length being preferably sinooth on the outside, While 'the upper portion is threaded as at 1.1.

"The core 10 is preferably composed of two identical halves o rsections 100, oneof which the chambers 12 and-bores 13 register accu A rately and form in the corea central longitudinally extending conically tapered chainber 14%, F ig. :2, and two central, longitudinal, cylindrical openings 15 and 16., the one lcading from the top of the .chamberl 11,1v out through the top of the core 10 and the other from ythe bottoni of the chamber through the bottom of the core. all as lshown in said it 17 in Fig. e., is shown in detail one section of two identical clamping members adapted to tit ivithinthe chamber 14 ot the core l0, as shown in Fig. 2, the said'.

clamping members being increasingly tafra pered on their outer surfaces from the top zzto the bottoni to correspond with the taper l of the Walls oi the chamber in which they lit, and provided with interior longitudi nally extending grooves, as at 18 in Fig. 4, forming, when the sections are brought together, as in Fig. a longitudinal bore, preferably formed with spiral grooves, as

at 19in Fig. 4, to correspond; in pitch with and receive and hold the Lviist d strands of a", cable 20, (Fig. 2). The spiral grooves may be omitted if desired.

The clamping members are preferably of Slightly less length than the chamber let of the Core l() in order that they may be at'-, forded a slight longitudinal adjustment to cause them, by virtue of their conical form and the corresponding form of the chamber, to more closely clamp the cable when desired.

At 24 is indicated a nut, interiorly threaded to lit upon the thread il of the core 10 when the parts are assembled, said nut beingY locked against accidental turning of by any suitable means, lsuch for instance, as a set screw as at Q2, in Fig; l.

A proper fit ot the two sections of the core is assured when they are brought together 4by any suitable means, such, for instance, as small pins or lugs 2l Fig. which project transversely from one section and engage corresponding recesses in the other sectio-n (not shown).

At 23, Fig. 2, is indicated paclings of any suitable form and material, serving, when the parts are assembled, to keep all water and sediment from entering into the interior of the body of the device, thereby preventing damage by oxidation or otherwise, which would prevent the ,slidii'ig of the core in the body. to tighten the grip of the clamp on the cable. Apacking may be used at the lower endof the core but this is usually unnecessary as the tool screwed into the lower end of the body is generally sufficient to prevent the entrance of water between the body and core.

To assemble the parts of thev device, the cable is passed through the nut 2l and the bore of the body G, the end of the cable pro- 'ecting beyond the lower end of the body ing now wrapped with wire, or held in a temporary clamp to prevent untwisting. The lamping members 17 are now placed upon alle cable and a pin driven into it through a 'uitable hole, as for instance at 25 in Fig. 4 -and the two members 100 of the core l0 placed upon the cable ii'iclosing the clamping members in the Achamber 14, the two members being caused to fit together in their proper places by the lugs Qel iitting into their receiving recesses, (not shown).

. -fhe core, with the inclosed clamping :members and cable, is passed upward through bore of the body until it lits closely. inthe upper portion of the bore of the body, the threaded portion of the core projecting Losanna above the top of the body upon which the nut F21 1s now screwed squeezing the packing between the nut and the upper end of the body and drawing the core upward in the upwardly decreasing bore of the body and causing the clamping members to tightly grasp the cable. This grasp of the claniping members on the cable is also assisted and increased bythe longitudinal play allowed the clamping members in the chamber 14 of the core.

ln some instances the clamping members may be dispensed with and the interior of the core formed with spiral grooves or corrugations to directly clamp the cable.

lt will be obvious that by the present iiivention, I have simplified and cheapened the construction ot' my prior patent herein referred to, by dispensing with several of its parts, and this has been done without detractiiig from its eliiciency, and while I have specifically 'described Athe construction ot the several parts, I do not wish to be,

understood as limiting myself tothese exact constructions, many changes and variations probably being possible without departing from the spirit and scope of the invention as claimed.

Having described my invention, what I claim as new and desire to secure by Letters Patent, isj l rope coupling comprising a tubular body formed with a tapering longitudinal opening, the lower end of said opening being provided with tool engaging means, a longitudinally tapering core within said body, said core being formed of duplicate sections, each section having a tapering central recess and end grooves communicating therewith, said recesses and grooves forming when the sections are assembled a central'longitudinally tapering chamber and reduced longitudinally extending guiding grooves, the upper ends of said sections being externally threaded and projecting beyond the upper end of the body, clamping members Jformed of duplicate sections tted in and corresponding to the center of the core chamber and having a limited longitudinal movement therein, and a nut engaging the threaded end of the core to lock the same within the body. 1

In testimony whereof, I affix my signature in presence of two witnesses.

WALLACE w. PAEME'rEE.

' Witnesses:

W. H. CAREY, RUEUe STONE.

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