US793384A - Grip for cable-lines. - Google Patents

Description

I PATIENTED JUNE 27, 1905.

H. LADEWIG.

)GRIP FOR CABLE LINES.

APPLICATION FILED OUT. 5,1904.

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l K W M PATENTED JUNE 27, 1905.

H. LADEWIG.

GRIP FOB. CABLE LINES.

APPLIOATION FILED 001:. 5,1904.

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PATENTED JUNE 2'7, 1905.

H. LADEWIG.

GRIP FOR CABLE LINES.

APPLICATION FILED OUT. @1904.

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NITED STATES Patented June 27, 1905.

PATENT OFFICE.

GRIP FOR CABLE-LINES.

SPECIFICATION forming part of Letters Patent No. 793,384, dated June 2'7, 1905.

Application filed October 5, 1904. Serial No. 227,208.

To all whom. it may concern.-

Be it known that I, HEINRICH LADEWIG, engineer, a subject of the King of Prussia, German Emperor, and a resident of 37 Burgwall, Dortmund, in the German Empire, have invented new and useful Improvements in Grips for Cable-Lines, of which the following is a specification.

This invention has for its object a tongs or shears grip for cable-tracks in mines and the like, which is intended to replace the forks or chains hitherto employed for this purpose.

The novel tongs or shears grip presents the advantage that it is easy to manipulate, while at the same time the prejudicial excessive pinching of the conveyer-cable which is effected by fork devices is obviated. By means of the novel device also the torsional effect upon the cable, which is so detrimental when chain devices are used and which frequently introduces insurmountable difliculties into the operation of the line, is rendered negligible. This form of grip also renders it possible to construct economically a cable-track or conveyer-line of any desired gradient or curvature.

In order that my invention may be readily understood and carried into effect, I will describe the same fully with reference to the accompanying drawings, in which- Figure 1 represents a cable-line in side elevation. Fig. 2 is an end elevation of the same. Fig. 3 shows the tongs-grip open. Fig. 4 represents a portion of the conveyor-cable with windings for retaining the grip. Figs. 5 to 13 show the novel tongs or shears grip in various constructional forms and drawn on a larger scale-that is to say, Figs. 5, 6, and 7 are respectively a side elevation, end elevation, and plan view of a shears form of grip. Figs. 8, 9, and 10 are respectively a side elevation, end elevation, and plan view of a tongs form of grip with upper pivot. In Figs. 9 and 10 the two tongs portions are shown separate one from the other. Figs. 11, 12, and 13 are respectively a side elevation, end'elevation, and plan view of a substantially similar grip, but with the difference that the lower extremitics of the arms of the tongs are formed as hooks instead of as eyes.

The form of grip represented in Figs 5 to 7 consists of two shears members a 7), connected by a pivotbolt 0, their lower extremities forming a hook (Z, while their upper extremities constitute a cylindrical sleeve 0 for surrounding the conveyer-cable f, Fig. 4E. The lower extremity of the shears-arm may also be formed as an eye. 'The form of grip illustrated in Figs. '8 to 13 likewise consists of two parts a b; but in this form of the device the pivOt-bolt c is situated above the cylindrical opening a. The pivotc is provided with a head 0, which fits into a recess 0 in the part 7). The two parts a and I) are thus held together and form tongs the arms of which are rotatable around the bolt 0 and which in their closed condition seize the cable f by means of their sleeve-shaped cylindrical opening 0. The lower end of the arms of the tongs may either be shaped so as to form an eye 9, as shown in Figs. 8 and 9, or so as to form a hook It, as represented in Figs. 11, 12. The cable-opening a of this grip is arranged upon the cable and the arms of the grip brought together. The grip is maintained in this closed condition by the tractive effort as the traction-ring or a traction-hook situated on the chain is engaged in the hook it or the eye of the grip.

The part a of the grip which surrounds the cable is made of such a length and its aperture of such a diameter that even when the traction exerted through the chain is very great it is possible for the cable to effect any torsional movement in the sleeve of the grip.

On passing through the fair-leads 71, carrying the cable, Fig. 2, the closed arms of the grip are automatically pressed laterally by the edge of the fair-leads in such a manner that the cable does not fall out of the disk. Behind the cable-disk the traction-chain causes the grip to resume its vertical position. The grip is held upon the cable f by means of small windings k of hemp or wire formed upon the cable, or, if preferred, by means of metal sleeves made fast upon the cable.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- 1. A grip for cable-lines in the form of prising a member with integral means to en- 1 tongs or shears, the two arms of which have gage the traction-chain and integral eye porformed integral therewith traction hooks or tions to receive the conveyer-cab'le.

eyes so that upon engaging the traction-chain In witness whereof I have hereunto set my 5 ring or hook in the said hooks or eyes the hand in the presence of two witnesses.

arms of the tongs or shears grip are main- HElNRICH LADEWIG. tained closed. Witnesses:

2. A grip for cable-lines consisting of two OTTO KoNIG,

like parts pivotally connected and each com- J. A. 'RITTERSHAUS.

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