US1367762A - Rope-grip - Google Patents

Description

J. G. ANDERSGN.

ROPE GRIP.

APPLICATION FILED oc. 2. 1920.

1,367,762. Patented Feb. 8,1921.

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ATTORNEY UNITED STATES JOHN G. ANDERSON, OF PYSI-IT, WASHINGTON.

.ROPE-GRIP.

Lacasse.

Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed October 2, 1920. Serial No. 414,303.

To all 'whom it may concern Be it known that l, JOHN Gr. ANDERSON, a citizen of the United States, residing' at l'ysht, in the county ot (Hallam and State of lWashington, have invented a new and useful Rope-Grip, of which the following is a specification.

illy invention relates to improvements in devices for holdingI ropes in fixed positions, especially wire ropes; and the objects of improvement are to provide a rope fastener particularly suitable for use in 'logging operations, wherein a high lead for donkey engines is established on a tree, a pole or the like, by means of blocks and tackle, and guy ropes, for the purpose of steadying the apparatus, are extended therefrom. The chief function of this fastener is to hold said guy ropes in operative position.

l attain these objects by the mechanism illustrated in the accom panyingl drawing, in which- Figure l is a view of the device in elevation and partly in plan, showing sections of rope in gripping engagement therewith; Fig. 2 illustrates the inner portion of one of a pair of movable clamping shoes with which the device is provided, having recesses conforming` substantially to the strands of a rope; is a longitudinal sectional View, partly cut away, of a portion of the fastener, showing the rope seated between a clamping shoe and one of the rope casings, the eccentric links being released from engagement with the slice; Fig. l is an elevation of one of said slices. showing its inner surface provided with recesses designed to conform to the strands of a rope; Fig. 5 is a cross-section drawn on the line 5--5` of Fig. l; Fig. 6 is a cross-section of a modified form of the device, wherein said shoes are dispensed with, and in lieu thereof the links are provided with concave end faces adapted to grip a rope. u

The device comprises a pair of casings l, substantially U shaped in cross-Section and adapted to receive and hold sections of rope, 2. The inner curved surfaces of these cas ings carry a number of recesses, 3 in Fig. 3, practically conforming to the strands of a rope, to afford a better grip or clutch on said rope. These complementary casings, necessarily of rigid construction, are connected by plurality of links 4. The drawings indicate but three links, but any number can be utilized to meet the size and requirements of the device. The ends of each link, while deiininggl in outline the segmentof a circle, are, in the preferred form of construction, right angular in relation to the body of the link. rThese links are pivotally and eccentrically mounted as shown at 5 between lugs 6 which extend in pairs from the casings l, the ends of the links presenting 'cam faces. Loosely mounted within each casing is a clamping shoe 7, which is retained in the casing,` by its ends projecting over the edges thereof, as indicated at 8. The inner curved surface of each shoe is provided, as shown 9, with a plurality of recesses adapted to conform to the strands .of a rope and are complementary to the recesses inthe curved portions of the casings.' The outer surface of each shoe is operatively associated with the camV faces of the links, as is best illustrated by l0, Fig. 5. The pivotal connections of the links are designated by ll.

Particularly referring to the logging industry, in which this device is especially useful, this rope grip is utilized in the following manner. ln skidding logs through the woods by means of a donkey engine and blocks and tackle, it is necessary to establish what is termed in the industry a high lead for donkies, z'. e., blocks andu tackle are mounted on a high tree or pole to facilitate the movement of the ropes and the logging operations. ln order to steady the tree or pole thus used, it is braced by guy ropes ex tending' to other trees or suitable objects. In fastening these guy ropes heretofore the practife has been to make a turn of the rope around a supporting tree or object and spike the rope thereto. to make additional turns of the rope, secured by more spikes, and then to fasten the free end of the rope to the main portion of the rope-by means of one or more U bolts. This method is wasteful of time, and the spikes. which are expensive, are in most cases a total loss. In utilizing my invention. the free end of the rope is inserted through a casing l, and one-or more turns Y of the rope made around a tree or other supporting object` the free end of the rope then being inserted through the other casing of the device. A forward movement of one casing simultaneous with a backward movement of the other casing, causes the cam faces of the links to engage the shoes in the casings, and these in connection with the recessed faces of the shoes and the casings, make the device effectually grip and retain the sections of rope Within it; in fact, the harder the puil on the rope, the tighter i' is held. F ig. 1 illustrates the device as gripping the rope. To release thev grip, tension rope.

'F 6 illustrates in cross-section a modified form of 'this invention. in it the construction is the saine es heretofore described, except that the slices are dispensed with, and instead of the links having right angular cam faces, the links are provided with cam faces that are concave, as shown at l2, and strieted, if desired, so as to 1netter grip the rope. It is used in the saine manner as the preferred form.

Changes in and modifications of the construction described may be made Without departing from the spirit of my invention or sacrificing its advantages.

l claim:

l. in' rope grip, the combination of a pair of elongated rope casings adapted to afford an e ual and a substantial lonoitndi* nal purchase on oppositely disposed sections vof a rope, and sunstantial hand-hold portions in adjustment of said grip, the inner portions of the casings provided with recesses adapted to conform to tlie strands of a rope, connecting said casings, a plurality of links circular in outline at eacli end and eccentrically and pivotally mounted, said ends defining in operation cam faces Within the cesings.

2. device of the class described, compri a pair of complementary members. the bodies of which are substanialiy li shaped in cross-section, their curved inner portions previdedwvitli recesses adapted to conform to the strands of a rope, plurality of iiniis pivote-ily and eccentrically mounted, operating Within and connecting said mem right angular cern feces, operatively associated with said cem Vfaces and mounted Within each member, a movable slice provided with t surface on the portion adje cent the cain faces, the opposite side 'of the sli-oe, adjacent tlfieiinner curved portion of seid member, being curved and having, complementary to the recesses in said mem loer, recesses adapted to conform to the strands of a rope.

JOHN Gr. NDERSUN,

ners, the ends of said iinirs provided with

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