US1427724A - Sling for handling cargo and other goods - Google Patents

Description

J. R. CLAY.

SLING FOR HANDLING CARGO AND OTHER GOODS.

APPLICATION [ILED FEB.18, 1921.

2 ETS-SHEET I.

1327,7241. Patgnted .29,1922.

FIG. I.

J. R. CLAY. SLING FOR HANDLING CARGO AND OTHER GOODS.

APPLICATION FILED FEB. 18, I921.

Patented; Aug. 29 2.

2 5HEETS-$HEE I I n UNITED STATES'PATENT OFFICE.

JAMES RICHARD CLAY, or ZBLQNDELLSANDS, ENGLAND.

SLING FOR HANDLING CARGO AND OTHER GOODS.

To, all whom it may concern:

Be 1t known that I,JAMEs RICHARD CLAY.

.a subject of the King of England, and re siding at Blundellsands, in the county of Lancaster, England, have invented Improve.- ments in Slings for Handling Cargo and Other Goods, of which the following is a specification.

This invention has reference to slings used on cranes, hoists, and like machinery, for raising and lowering packages and goods, the slings being of the type consisting of a rope of hemp or wire (or chain), generally in endless form, the loop of the endless sling at one end being passed through the loop at the other end after the goods have been. placed in position in the sling, and are to be lifted, lowered or moved.

Under present practice of lifting and lowering of goods or articles by slings, especially in cases where a number of packages or articles are bundled together, and bound and slung by a single sling, it is a common practice, after the loop forming one end of the sling is passed through the other, to knockdown the outer loop over the part of the sling to the end of which the crane or hoist tackle will be slung, with the object of preventing any of the goods or packages slipping out, so that they will be firmly bound and can be safely lifted and moved from one point to another without the fear of any slipping out, resulting in breakage, and endangering the life of those manipulating the goods or articles, and others in the vicinity of the operations; but in spite of this precaution of closing of the sling in the manner referred to, and binding the goods, packages or articles frequently do slip out of the slings, resulting in breakage and damage, and sometimes accidents to the operators or others; and it is the primary object of this invention to obviate this drawback; while a further object and effect is to render feasible the use of wire rope in slings. T 0 this end, the sling is fitted with a roller or pulley device or devices through the core of which the supporting means passes, while the other end of the sling which is to be slung from the raising and lowering tackle of the crane, hoist or the like, is, when the sling is bound round the goods or packages, passed through the roller or pulley device or devices, andso through the other end of the sling; and the roller or rollers or pulley or pulleys being loose, they will, when the specification of Letters t- Patented Aug. 29,; "1922'. Application filed February 18, 1921. Serial No. 446,012.

sling is used, revolve on their support. -with the effect that the part of the sling being hauled upon will run freely on the roller or rollers or pulley or pulleys, and the sling will automatically tighten itself up, and bind closely over and on the upper parts of the packages or goods as well as other parts. so that none of the goods or articles of the bundle can slip out, the whole lot or bundle or packages or articles being held firmly together at all points. i

By the use and application in a sling ofthe device or means described, the objects aimed at under this invention are accomplished.

The sling is illustrated in the annexed drawing in which Figure 1 shows it applied and supporting a bundle of goods; and Figure 2 is a detail partly in section showing the roller or pulley device; and Figure 3 shows a modification.

Referring to the drawings. 1 is the sling, which consists of two lengths of rope, say wire rope, the upper end of which is in the form of a loop, with which the hook of the raising and lowering machinery would be connected; whilst the other ends carry the roller or pulley device through which the two lengths or runs of the rope pass.

In the arrangement of roller or pulley device in Figure 2, two pulleys or rollers 2 are supported upon a hollow spindle 3, connected at its ends to the ends of the sling ropes 1 by metal links 4, through one end of which the pulley supporting spindle 3 passes, and to which it may be fixed by keys or the like, and by which it is secured; the opposite ends of the links having eyes 6 to which the ends of the sling ropes are attached. The rollers or pulleys 2 are grooved as shown, and their bosses at the outside project and work against the inner faces of the links 4-; but play may be provided between the two rollers and links, so that they are free to revolve and move, and will not bind.

Holes as 7 may be provided in therollers 2- for introducing lubricant to the supporting shaft 3, and the roller interior bearing surface, which is recessed out as shown.

In the modification shown in Figure 3, the roller or pulley device has only a single pulley, and the two runs of the sling ropes 1 run in the groove of the pulley together, as shown; whilst the links 4 are connected together between the eyes 6 and the spindle by a strut 8, the ends of which are threaded and screw into threaded holes in the links. Otherwise than in these respects the construction of the pulley -or roller device is similar to that shown in Figure 2.

In both cases the links are of such a shape as to extend beyond the periphery of the rollers or pulleys and so protect them against damage by falling on the ground or floor.

A sling of this kind renders the desirable use of wire ropes for slings, feasible, as it provides a free running action desired in such appliances, and therefore is advantageous in this respect; while at the same time the sling is also advantageous in the case of hemp and like ropes being used.

What is claimed is 1. A sling, comprising a pair of cables, a plate secured to the end portion of each cable, a spindle for securing the plates in spaced relation and a grooved wheel rotatably' mounted on the spindle for each end portion of the cable, each cable being adapted to encircle the article to be slung and pass overthe respective grooved wheel so that the'cables will be drawn toward each other as they pass under the rotatable member.

' 2. A sling, comprising a. cable formed with a bite in the central portion, a plate secured to each end of the cable, a spindle connecting the plates together in spaced relation and a roller for each cable portion mounted on the spindle so that each end portion of the cable will extend around an article to be slung andbetween the plates under the-roller, the bite in the central por tion being adapted to be engaged by a lifting means,and the end portions drawn toward each other as they pass over the roller.

In testimony whereof I havesigned my name to this specification in the presence of two subscribing witnesses. 1

JAMES RICHARD CLAY.

Vitnesses Anion MABEL WATKINS,

CLIFFORD F. RoYs'roN.

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