US1500374A - Guy-line clamp - Google Patents

Description

July 8 1924. 1.500,s74

H. P. cox ET AL GUY "LIINE CLAMP Filed Nov. 12. 1923 a Muentors,

HENRY A Cox, 4 HENRY 0. DAN/5L5.

4 fro/776v Patented July 8, 1924.

UNITED STATES 1,500,324 PATENT OFFICE.

HENRY r. cox AND HENRY D. DANIELS, or PORTLAND, OREGON.

GUY-LINE CLAMP.

Application filed November 12, 1923. Serial No. 674,355.

To all whom it may concern:

Be it known that we, HENRY P. COX and HENRY D. DANIELS, citizens of the United States, residing at Portland in the county of Multnomah and State of Oregon, have invented a new and useful Improvement in Guy-Line Clamps, of which the following is a specification, reference being had to the accompanying drawings.

Our invention relates to clamps as a class.

The object of our invention is to provide a. device of this class particularly adapted to guy lines to secure the same, when drawn taut, in a desired position. This we accomplish by providing two sets of plates having longitudinal grooves with helically formed tranverse grooves therein and the illustrated connecting means between the plates, which plates have means to secure them about a guy line in rigid position. These objects, as well as other advantages, we attain by the construction, combination and arrangement of parts illustrated in the accompanying drawings which form a part hereof.

Fig. I is a plan view of the device arranged upon a cable drawn about a holding or guy stump as shown in Fig. II.

Fig. II is a side elevation of the same as shown in Fig. I.

Fig. III is a side elevation of the top of a. spar tree showing guy lines extending therefrom.

Fig. IV is a side elevation of clamping plates as opposed to each other.

Fig. V is an end elevation of the plates as shown in Fig. IV.

Fig. VI is a bottom plan view of the lower clamping plate shown in Fig. IV.

Like characters refer to like parts in the views.

A holding object such as the stump 1 is provided. About this a guy cable 2 extends. Opposing plates 3-4 have longitudinal grooves 5 along their inner surfaces. Within the grooves 5 the surface also has transverse helical grooves 6. The plate 3 has an integral eye lug 7 near one end. Each plate has openings 8 therein. Headed bolts 9 extend through the opposing openings 8 in the plates which are then adjusted to clamping position and there secured by the nuts 10. A clevis 11 is pivotally mounted in the eye lug 7. There are two pairs of like plates. A cable link 12 of convenient length has a closed socket 13 rigidly secured on each of its ends. The clevis 11 is attached within the opposing socket 13 to connect the two sets of plates with each other. In logging operations it is usual to select a so-called spar tree of convenient height. Near the top of this tree a. pulley is secured, through which a line' is passed, extending from a drum of'a cable engine to a log. or other object to be drawn by power means. It is necessary to secure guy lines to the spar tree in opposing directions to that of the hauling direction, in order to retain the tree in rigid vertical po sition. The top of such a. tree 14 is shown in Fig. III'with guy lines extending therefrom, the illustration. showing them of less diameter than in the: other figures, but intended to be the same: kind ofilines. The line 15, for example, may be considered as beingthe same line as the line 2. Our device is especiallywell adapted for guy lines of the character referred to but we do not limit ourselves to its use in connection with spar trees only.

The operation will now be described. The plate bolts are loosened and those on one side may be removed to allow the opposing plates to he slipped about a part of. the.

cable 2 after it has been drawn around the holding object 1. The plates are then rigidly. secured about the cable by means of the bolts. The. cable passes through the groove 5 and its helical strands engage the opposing helical grooves 6. The other plates are secured upon the opposing part of the cable which has been drawn about the holding object. In this operation the cable is first drawn taut by power means and held there until the plates are secured as illustrated in Fig. 1, whereupon the power is released and the link forms part of a loop in the cable which passes about the stump 1 and thus theguy line is drawn to a desired tension and secured in such position, allowing the guy line to be taut between the stump and the top of the spar tree.

It has been found heretofore that securing devices for guy lines, which must sustain a heavy strain, cannot be satisfactorily and efficiently secured in a desired position and retained there without allowing con- I siderable slipping and consequent necessity for frequent adjustment in the tension of the guy lines. .These difliculties have been overcome in our device. Our clamping means is so reliablethat there is practically no chance for a line slipping through it and the necessity for tightening the guy line is limited to a stretching of the line material itself or a giving way by the object being held to position. The helical groove 6 allows the plates to fit very closely about the helical strands of the guy lines and thus the plates may engage the lines in close contact without injuring the material in them and with a most effective clamping hold on the cable. Our device can be secured in clamping position after the guy line has been drawn taut by power means. The helical grooves we believe to be preferable and of great advantage but the device may also be operative with the longitudinal'groove only.

Ne claim 1. In a guy line clamp, the combination of illustrated parts as follows; the two pairs of opposing plates having opposing longitudinal grooves therein, an integral eye lug on one plate, also means to secure said plates to each other about a line extending between them within the grooves, the clevis pivotally mounted in the lug eyes, and the-link having closed'sockets at each end connected with the clevis on the opposing plate, said apparatus being adapted to allow the plates to be adjusted about opposing parts of a guy line when the same has been extended about a holding object to form a loop.

2. In a guy line clamp, the combination of illustrated parts as follows; the two pairs of opposing plates having opposinglongitudinal grooves therein with transverse helical grooves along the same, an integral eye lug on one plate, also means to secure said plates to each other about a line extending between them within the grooves, the clevis pivotally mounted in the lug eyes, and the link having closed sockets at eachend connected with the clevis on the opposing plate, said apparatus being adapted to allow the plates to be adjusted about opposing parts of a guy line when the same has been extended about a holding object to form a loop.

HENRY P. COX. 7 HENRY D. DANIELS. Witnesses:

JACOB LESSER, DELIA SMITH WRIGfiT.

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