US2491767A - Two-legged braided sling - Google Patents

Description

Hume, 22w, M ME" n. s. ROBBHIN$ ZAMJFE? TWO-LEGGED BRAIDED S LING Original Filed May 5, 1945 INVENTOR. D4 W0 5. Roam/vs HIS ATTORNEY Patented Dec, 20, 1949 TWO-LEGGED I'oRAIDED SLING David S. Robbins, Hamden, Conn, assignor to The American Steel and Wire Company of New Jersey, a corporation of New Jersey Original application lt lay 5, 1945, Serial No. 592,241. Divided and this application May 11, 1948, Serial No. 26,442

4 Claims. (Cl. 87-8) This invention relates to a two-legged braided sling and is a division of my copending application, Serial No. 592,241, filed May 5, 1945, now Patent No. 2,448,463, dated August 31, 1948.

Two-legged braided slings are well known, but those made prior to my invention were not sumciently flexible and the maximum strength was not obtained from the ropes used therein. In addition to these characteristics, it is desirable that gether to form double splices 4. Before the braiding operation, the eight parts of rope are laid in parallel around the pin 2 and in braiding care is taken that both legs are braided from the same position. The eight parallel ropes around pin 2 are served together by means of a seven wire strand 8 and a thimble 30 is inserted in the eye 32 and strips of steel 34 are welded to the thimble to prevent it from falling out. It will be seen the sling should lay dead. that the completed sling consists of an eye por- It is therefore an object of my invention to protion 32 formed of four left and four right lay vide a two-legged sling having these desired charropes and a body portion having two legs 36, 38, acteristics. each of said legs being formed of two pairs of This and other objects will be more apparent substantially parallel right lay ropes and two pairs after referring to the following specification and 1 5 of substantially parallel left lay ropes braided toattached drawings, in which: gether, and an eye portion 40 at the end of each Figure 1 is a diagrammatic view illustrating the leg. Each eye portion 40 is formed of two left position of the strands prior to braiding the sling; and two right lay ropes which are spliced and Figure 2 shows a braided sling assembled with either served with wire 42 or provided with a the splice formed in the endless units; no thimble similar to thimble 30.

Figure 3 is a view of one of the eyes with a While one embodiment of my invention has thimble in place; and been shown and described it Will be apparent that Figure 4 is a sectional view taken on the line other adaptations and modifications may be made IV-IV of Figure 3. without departing from the scope of the following Referring more particularly to the drawings, 95 claims. the reference numeral 2 indicates a pin around I claim: which is arranged two groups of ropes each con- 1. A two-legged sling comprising an eye portion sisting of two right and two left lay ropes. The and a body portion extending from the eye porgroups are arranged around pin 2 in a substantial tion in two legs, the body portion in each leg be- V-shape as shown in Figure 1. Only one pin is ing formed of two pairs of substantially parallel actually used, but for the sake of clarity two are right lay ropes and two pairs of substantially shown. In braiding, one operator takes left lay parallel left lay ropes braided together, said ropes H and i2 in his left hand and right lay braiding being maintained in one direction ropes H and IS in his right hand and the other throughout, the eye portion being formed of four operator takes right lay ropes l5 and [5 in his left left and four right lay ropes. hand and left lay ropes l3 and M in his right 2. A sling according to claim 1 in which there hand. In the braiding operation, operator #1 is an eye portion at the end of each leg, each of passes his ropes back and forth in a horizontal said eye portions being formed of two left and plane keeping ropes H and i2 on top of ropes 17 two right lay ropes. and 18 for every reversal, or vice versa. At the 3. A sling comprising eight endless units formsame time, operator #2 passes his ropes back and ing an eye portion, two legs leading from said eye forth in a vertical plane keeping ropes l5 and i6 portion and an eye portion at the end of each leg, to the left of ropes l3 and M or vice versa for four of said units being made of left lay rope and every reversal. This operation is continued until four of right lay rope, the first eye portion being the braiding is completed in the one leg, after 45 formed of four left and four right lay ropes, which the ropes are all double spliced at 6 to make each of said legs being formed of two left lay and endless units. Wires 6 are arranged around the two right lay ropes braided together, said braiding ends of the double splice as shown in Figure 2. being maintained in one direction throughout, One operator then takes left lay ropes 2i and 22 each of said last named eye portions being in his left hand and right lay ropes 21 and 23 in formed of two left and two right lay ropes. his right hand and the other operator takes right 4- A sl n ac din t laim 3 in whi h th lay ropes 25 and 25 in his left h and left lay splices for the endless units are in the last named ropes 23 and 24 in his right hand and the ropes y portionsare braided together in the same manner as the DAVID S. ROBBINS. ropes in the other leg. After the braiding is completed, the ends of the ropes are spliced to- No references cited.

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