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Publication numberUS2071694 A
Publication typeGrant
Publication dateFeb 23, 1937
Filing dateNov 14, 1932
Priority dateNov 14, 1932
Publication numberUS 2071694 A, US 2071694A, US-A-2071694, US2071694 A, US2071694A
InventorsForrest Howe James
Original AssigneeAmerican Steel & Wire Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tension cable and method of applying same
US 2071694 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Feb. 23, 1937. J HOWE 207L694;

' TENS-ION CABLE AND METHOD OF APPLYING SAME Filed Nov. 14, 1932 F 1 g"- I 1 a 5 Z 55 ,5, g

' 12206 0507: Jame-5 Fae/e557 Hon Ls,

Patented Feb. 23,. 1937 I 2,011,094 y TENSION canes AND METHOD OF APPLY- ma SAME James Forrest Howe, Worcester, Mass assignor to The American Steel and Wire Company of New Jersey, a corporation of New Jersey Application November 14,1932, Serial No. 642,845.

' 4 Claims; (c1. 18931.5)

This invention relates to an improved guy or tension cableand method of applying the same to insure the proper degree of tensioning while supporting loads, any other. use-to ,which atension cable is susceptible.

In the manufacture of w ire cable or rope it is 4 the practice to stretch thesame under a determined tension for a length of time in order that there willbe no structural yield, and very little elastic stretch, remaining in the cable. If this is not done, the cable, after it has been installed under tension for a short length of time, will stretch,

and the rigidity of the guy of which the cable is part will be impaired. Howev r, after the cable has been stretched and delivered to the field of its use there is no satisfactory means available for subjecting the same to the exact amountof tension, or elastic stretch, for which it is intended. By the practice of my invention this difiiculty is obviated.

One object of my invention is to provide a cable having incorporated therewith means for exactly determining its tension both during. and after its installation. These and other objects will be apparent from a consideration of the drawing and specification Inthe drawing: Figure 1 is a side elevation of a guy rigging applied to a vertical structure, such as a stack. Figure 2 is a plan view of my improved cable, together with its tension determining means.

Referring more particularly to the drawing, the cable is indicated by the numeral 2. manufacture the cable is subjected to ing in a tensioning' machine of any con entional design for a considerablelength of tinie in order to assure that there will be no appreciable stretch left in the cable. After the stretching operation 4 to remove the structural yield,the cable 2 is subjected to a further and determined tension, or elastic stretch to which it will, or should be, subjected while in use. During this further tensioning one or more markers I are rigidly fixed to the These markers 1 45 cable 2 at determined points.

comprise annular rings .of zinc material and have lines surfaces. Theuposition of the'markers is determined by the use of a measure 4 having lines 4' 50 inscribed thereon. i

One use of my improved cable is illustrated in Figure l of the drawing, in which a vertical stack is indicated at Ii and is intended to be braced or guyed. An annular ring 6 is clamped on the 55 stack and has associated therewith fixed elements or other suitable to which are secured the terminals 1 of one end i of the guy cable 2. The other end of the guy guying vertical structures or After its retchleasing the tension on said cable.

3 inscribed on their ment thereon.

cable is showmas' provided with terminals 8 which are in turn secured to fastening members 8* of ground anchors 9 which are positioned at aplurality of points around the base of the stack.

In order to assure the exact degree of tautness the cables are gradually tensioned until the lines l on the markers 3 are made to coincide exactly with the lines 4* on the measure 4.

. A modified method can be provided by originally manufacturing the cable with the markers fixed thereto and in making the lines 4* on the 'measure 4 to coincide with the lines of the markers 3.

A still further modification is to provide but one marker] and to measure the degree of tension, or elastic stretch, ofthe cable in use from one or both of its ends. 7

1 ,While I have shown and described one specific embodiment of my invention it will be understood that I do not-wish to be limited exactly thereto,

since various modifications may be made without departing from the scope of my invention as defined by the following claims. I claim:

stretched tension cable and a marking element or elements fixed to said cableat at, least one determined point from the ends thereof while the same isunder a further and determined tension.

2.. As a new article of manufacture, a prestretched tension cable and a plurality of marking elements fixed to said cable in determined I .25 a has a new article of manufacture, a pre-' relationship with respect to each other and while said cable isunder a further and determined tension. a i i 3. The method of applying'tension cables which consists in subjecting a preformed cable toa tension sufilcient to take up approximately the major portion of its structural yield, marking said cable along its length while his under said tension, re-

installing said cable. in the field of use, and subjecting the same to a tensiondetermined by the position of the marking thereon. I

4. The method of applying tension cables which consists in subjectin a preformed cable to a tension sufllcient to take up approximately the major portion of its structural yield, subjecting the I same to a further tension, afiixing to said cable along its length at least one marking element while it is under said tension. releasing the tension on said cable,'installing said cable in the field of use, and subjectingthe same to a tension determined by-the position of the marking ele- JAurss roaans'r news.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2861332 *May 11, 1955Nov 25, 1958United States Steel CorpMethod of tensioning guys
US3033526 *Oct 24, 1955May 8, 1962Priest Reid GPortable logging tower
US3455081 *Feb 8, 1967Jul 15, 1969Postmaster General UkMethods of staying vertical poles,masts and like structures and apparatus for use therewith
US3791210 *May 17, 1972Feb 12, 1974Velcon FiltersCable tension measuring device
US4348907 *Mar 3, 1980Sep 14, 1982Giese Gene ERetirement elongation indicator for mast raising lines
US4815408 *Aug 31, 1987Mar 28, 1989Raanan BurdRigging clamp and guage
US5003913 *Jun 12, 1989Apr 2, 1991Jensen David GChain elongation indicator and method
US5333509 *Nov 12, 1992Aug 2, 1994Michael DimenTension gauge
US7422256Mar 3, 2006Sep 9, 2008Mueller DewayneLifting sling with excessive elongation warning indicator
US7938468Sep 8, 2008May 10, 2011Mueller DewayneLifting sling with excessive elongation warning indicator
US8256810May 6, 2011Sep 4, 2012Mueller DewayneLifting sling with excessive elongation warning indictor
Classifications
U.S. Classification52/741.1, 73/828, 73/785, 52/105
International ClassificationF16G11/00, F16G11/12
Cooperative ClassificationF16G11/12
European ClassificationF16G11/12