US1334244A - Rope-sling - Google Patents

Description

I. F. HOWE.

ROPE SLING.

APPLICATION FILED !MY 29. 1919.

1334344. Patented Mar. 16, 1920.

// 4////W// //4MII M//fl I NVENTOR JAMES F. HOWE, OF WORCESTER, MASSACHUSETTS.

ROPE-SLING.

Speciflcation of Letters Patent.

Patented Mar.16,1920.

Application filed May 29, 1919. serial No. 300,519.

To all whom it may cance n:

Be it known that I, JAMEs F. HOWE, a

citizen of the United States, residing in various loads and are graded to sustain defii nite loads or strains in practal use.

Experence has taught that the loops or eyes formed in cables by known methods do not hold when subjected to working stresses allowable for the gven sizes of rcpes or cables.

One of the objects of this invention is to construct a loop in a rope or cable which will not fail When the maximum stress allowable for said rope or cable is applied thereto. Another object is to construct the loop so that auXiliary strands may be woven therein to increase its strength. Other objects will be apparent from the following description and claims when read in connection with the accompanying drawings.

liigure l illustrates the end of a rope or cable in which portions thereof have been unlayed prior to forming a loop therein;

Figs. 2 and 3 illustrate difl'erent steps in iorming the eye or loop;

Figs. 4: and 5 show the finished loop or eye i'ormed in the cable;

Fig. 6 is illustrative of a loop or eye which is formed with a number of interwoven reinforcing strands.

In forming the eye or loop according to my invention I unlay two Component portions A and B from the rope C and place' a seizing or binding at the point D beyond which it is not desired to open up the rope, it being clear that the length of the portions A and B may be varied according to the size of the eye to be formed. The portions A and B are preferably, though not necessarily, formed of an equal number of strands, and said portions may be formed by unlaying either adjaeent or alternate strands from the rope proper.

4 In forming the loop the portions A and B are first bent around and overlapped as shown in Fig. 2 and fastened at the oint E. The portion B is now taken and fo lowing the direction of the lay of the rope is intertwned around the portion A and likewse the portion A is intertwined around the portion B thereby forming up the loop as shown in Fig. 3,'. The ends a and b are now fastened to the body of the rope either by splicing them into the strands thereof as ndicated in Fig. 4, below the seizing at the point D, or by bindin them at F b means of a seizing or a ferru e as indicated in Fig. 5. Or these ends may be both spliced and seized when it is desired In cases where extra strength at the loop s desired auxiliary strands 8 and t may be intertwned with the portions A and B when forming the loop as illustrated in Fig. 6. These extra strands will compensate for the loss of strength due to the wear on the loop When in use. It is clear however that the known forms of thimbles may be inserted in the loops to prevent wear thereon when desired.

Rope slings having loops or eyes as described herein are capable of withstanding the stresses allowable for the sizes of cable in which they are :tormed and are therefore more efficient and possess greater utility than those heretofore used.

Though I have described with great particularity the steps in making my improved rope 'sling and the Construction thereof, it is not to be construed that my nvention is to be limited to such a method or structure except as defined in the following claims.

What I claim is:

. l. The method of forming an-eye in a rope which consists in first unlayng a short length of 'the end of the rope and dividing said short length into two portions and then intertwining said portions with each other to form a loop and joining the ends of said portions to the rope proper.

2. The method of forming an eye in a rope which consists in first unlaying a short length of the end of the rope and dividing said short length into two portions and second forming a loop by first overlapping and securing the said portions at a point intermediate their free ends and the body of the rope, and then intertwining said portions with each other to form a loop and splicing the ends of said portions to the rope proper.

. 3. The method of forming an eye in a rope which consists in first seizing the rope at a point beyond which it is not desired 'to form the eye, then unlaying the end of the rope down to said seizing and dividing said short length into two portions, then forning a loop by first fastening the said portions at a point intermediate their free ends and `the body of the rope, and then laying each of said portions aboutthe other 'and joining the ends of said portions to the rope proper.

4. In a rope having` a seizng at a point spaced fron its end, a loop conposed of two eonponent integral portions of said rope above said seizing, said portions being overlapped on each other at the head of said loop and intertwined with each other, and having their free ends Secured to the rope prope` below said seizng.

In a rope having a seizing at a point spaced from its end, a loop conposed of two component integral portons of said rope above said seizing, said portions being over lapped on each other at the head of sad loop and ntertwned wth each other, and

having their free ends splieed into the rope proper below sad sezng, and a second sezng seenred over and around said rope proper and said splicod ends to firnly ho d them in position.

G. In a rope a loop eonposed of a conponent ntegral portion of said rope divided -to form two portions, said portions being my name.

JAMES F. HOWE.

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