US1427114A - Lock-wire turnbuckle - Google Patents

Description

W. MARTIN.

LOCK WIRE TURNBUCKLE. APPLqcATloN FILED JuNEI. 191s.

Patented Aug. 29, 1922.

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VJYAJILL MARTIN, 0F CLEVELAND, OHIOLASSIGNOR OF ONE-HALF `TO CUMMNG COX..

LOCK-WIRE TURNB'UCKLE.

Application filed June 17,

T0 all vir/1.0m. t may concern.'

Be it known that l, llllra'rr MARTIN, a citizen of the United States, and a resident ot Cleveland, county ot Cuyahoga. State of @him have invented a new andvusetul lmprovement in Lock-lire Turnhuckles, of which the following is a specification, the principle of the invention being herein. explained and the best mode in which l have contemplated applying` that principle. so as to distinguish it from other inventions.

The present invention relates to lock-wire turn-buckles for holding the ends o'l' wire cables andthe like without soldering the same. It is particularly adapted ttor use in securing" cables. such as are used in aeroplanes. and the device is adapted to be formed as one end of the usual turn-lnickle employed in such constructions.

The device combines light weight with strength and holding power and is easy to install or replace. Then used cables may be changed readily and under conditions in which they could not he soldered.

Figure l is a side elevation of my improved turn-buckle; Fig. 2 is a central sec tion through the turn-buckle; Fig'. o is a side elevation partially in section ot a modified form of turn-buckle; Figs. 4L and 5 are sections taken on the lines lf-4land 5 5 ot Fig. 2, respectively; Figs. 6 and 7 are sections taken on the lines 6-6 and 7-7 of Fig. 3 respectively.

The present device consists of a. chuck portion l having a slotted end 2 provided with an aperture 3 adapted to receive a pin or other fastening` means to hold it to a bracket or clip. rlhe chuck is slotted centrally, the lower portion 4 ot the slot being' narrowed and provided with inclined concave grooves 5 terminating' in a double aperture 6 extending through the lower end ot the chuck. The faces 7 of the slotted portion are flat and are provided with apertures 8 to lessen the weight. The particular outer form of the chuck is not essential and when used under conditions where light wei ,eht is not essential, the chuck will preferably he lett with rounded taces and without the apertures to simplify the manufacture and to lower the cost.

Below the inclined grooves 5. the chuck terminates in a cylindrical portion 9 which has an upper eXteriorly threaded portion 10 and an extending split end ll which istapered toward the end. The double aperture specification of Lenersratent. regt-tenta@ au@ 29 3922;',

1918. Serial No. 240,442.

k6 extends through the split end and over this end is mounted a sleeve l2 which is in= teriorly threaded lat its upper end and is provided with faces 13 adapted to be engaged by a wrench or the like. The sleeve is provided with an inclined annular tace 14 at its lower portion terminatingin a centrally located aperture l5 of suilicient size to t the cable 16. The inclined annular face 14- is adapted to contact with the inclined outerv tace of the split portion of the chuck in order to securely grip the wires when the sleeve is threaded on to the threaded portion of the chuck.

The cable 16 is adapted to be inserted through the split sleeve and is mounted over a grooved hohbin 19. and is then threaded `downwardly again though the sleeve. The

bobhin 19 is heart shaped and conforms to vthe angle ot the grooves in the ychuck so that when the wires are clamped in the sleeveV tur-ther movement of the wire will wedge the bobbin and the cable firmly in the inclined grooves in the chuck and prevent further movement ot the same.

In the form shown in Fifi). 3 the threaded end 2O of the chuck is split and has two apertures 2l. 22 opening` together. one of them larger than the other. The cable 23 is threaded through the sleeve and over the bobbin as in the other form, and extends down through the short end of the chuck, the stub end 24T ot the cable being held in the smaller one 22 ot the two openings. This split threaded portion ot the chuck is cone shaped and threaded on its outer surtace. and is adapted to be engaged by a short sleeve 25 which will securely clamp the stub end ot the cable between the two halves of the chuck. Thus when any strain is put on the cable the stub end is firmly held and the cable will then move` slightly until the bobbin 26 has wedged the two portions of the cable firmly against the grooves in the chuck, holding' the same tightly against movement.

The form oit the present turn-buckle, as shown in Fig. 3, where the upper end of the chuck terminates in a threaded portion 27. is adapted to be engaged by one end of an interiorly threaded turn-buckle 28 carrying the usual outer end provided with the usual slotted end 29. Then in use it has been 'found that the long' sleeve shown in Figs. .l and 2 is not essential and the device will hold the cable securely even it the sleeve is not employed, the cable being wedged firmly against the two grooves in the chuck proper .All that is. neceal lbe made in various sizes for different types of work, the size shown in Fig. 3 being designed 'for aeroplane construction where light .weight is essential, vwhile the forms shown in Figs.' l and 2 will be used for heavier types of cable where the weight is not so essential.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being madeas regards the `mechanism herein disclosed, pro vided the means stated by any of the following claims or the equivalent of such stated means be employed.

l therefore particularly point out and distinctly claim as my invention v l. ln' a device of the character described, the combination of a chuck member having va lower split portion provided with two cable receiving apertures, and a slotted upper portion having inclined ygrooves in communication with such apertures, the exterior of .auch chuckL member being apertured, and being provided at its lower end with a "cone shaped portion, and a clamping sleeve havingan interiorly threaded portion adapted to be threaded on the chuck member, said sleeve having an inner inclined annular face adapted to contact with said cone shaped portion of said chunk member to clamp the cable in such apertures.

2. In a device of the character described, the combination of a chuck member having a lower split portion provided with two cable receiving apertures, and a slotted upper portion having inclined grooves in communication with such apertures, the exterior of such chuck member being apertured, a bobbin adapted to receive the cable .therearound and being pointed to wedge the cable in such igned by me, this 14th day of June, 1918.

WYATT MARTIN.

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