US1551886A - Sling - Google Patents

Description

Sept. 1, 1925.

"r. w. JENSEN SLING Filed March 19, 1925 INVENTOR ATTORNEYS.

I THoRwALDwJnnszu.

Patented Sept. 1, 1925.

UNITED STATES Par THORWALD w. JENSEN, on BERKELEY, CALIFORNIA. f

SLING.

Application filed. March 19, 1925.

T 0 aZZ 207mm it may concern.

Be it known that I, THORWALD IV. JEN- SEN, a citizen of the United States, and a resident of Berkeley, in the county of Ala.- meda and State of California, have invented a new and useful Sling, of which the following is a specification.

This invention relates to slings for use in the art of loading and unloading, and its primary object is the provision of means for balancing the load as the latter is handled and for establishing such equilibrium as to cause the load to hang perpendicularly when descending so that it will alight firmly flatwise at its base when the load is brougl'it in contact with the ground or other surface.

I do not propose to confine myself to any particular use to which the invention is put, but it will serve to illustrate functionally, structurally and from a standpoint of prac tical utility, that, in handling heavy and bulky paper rolls, it has been very diflicult to establish equilibrium or balance of the load during the conveying or lowering operation, and as a result, the load dangles at an angle in its descent and the corners at the base of the rolls constituting the load generally strike the ground, with disastrous results to the paper; and I have, to a very large extent, devised my invention so as to overcome just such difficulties.

lVhen these rolls. are handled by steamship or freight handling lines, considerable pecuniary damage results incident to injury of the goods in transit and handling, and I am able to satisfactorily avoid, or

at least materially reduce this liability incident to the novel construction of my device and the manner in which it can be skillfully used.

A very important object of the invention is to provide a sling consisting of a circumferentially adjustable load embracing ele ment, and a load suspending means associated therewith so as to distribute force against the element to cause it to snugly and securely embrace the load to hold the latter immovable with respect to the element when the load is handled, while connecting the element with respect to the member so as to equalize the balancing action and permit the load to assume and maintain a true perpendicular position at all times.

Another important object of the invention is to provide a sling having a load em- Serial No. 16,828.

bracing element which can not be accidentally disconnected from the latter is handled. V

A further object of the invention is to provide a sling which will firmly embrace the load and at the same time in no way injure the same.

With the above and other objects in view which will appear as the nature of the in: vention is better understood, the same consists in the improved construction and novel arrangements of parts which will. hereinafter be fully described and pointed out in the claims.

In the accompanying drawings has been illustrated a single and preferred form of the invention, it being, however, understood that no limitations are necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of. the claims may be resorted to when desired.

Figure 1 is a conventional perspective view showing an application of the slingto two paper rolls;

Figure 2 is a view in sideelevation of the draft connection between correlated ends of the adjacent sections of the load embracing element; and

Figure 3 is a perspective view of a portion of one section of the load embracing element.

In carrying the invention into practice, I employ a sling consisting of a load embracing element 5 and a force distributing and load carrying member 6.

The element 5 includes two identical semicircular sections 7 -7, each formed of hempen rope folded on itself to provide end loops 8, and two or more strands or together at 10. In'each eye 8 is supported a frame 11 carrying a sheave 12.

The load sustaining and force distributing element 6 is formed preferably of flexible wire cable, and I preferably use two strands 13 and it connected together by a ring 15 and swivels 16. This produces an upper loop 17, and as illustrated, these strands extend respectively to the respective sides of the load embracing element 5. As shown in Figure 1, one strand extends downward and under the sheave 12 at one end of one section 7, and from this point it is extended longitudinally at 18 and over the sheave 12 at one end of the companion section 7, and thence it returns in an opposite direction at the load when particularly.

leads 9 spliced ioo i 19 where it is joined permanently at 20 to the frame 11 of the first said sheave. The ends of the sections 7-7 at the other side are joined together in a like manner by the other one of the strands of said load sustaining and force distributing member 6. At the said opposite side, the other said strand of the load sustaining and force distributing member first extends under the sheave at the left of Figure l at the point in dotted lines so that it is diagonally opposite the corresponding arrangement of the other strand which connects to the right in the full line position shown in Figure 1.

It now follows, the structure having been described, that when the two members 77 are placed around two rolls of paper A-A, said rolls being side by side or in vertical parallelism, and the load of the two rolls hung from the member 6, the strands constituting said member provide draft connections between the respective sheaves 12-12 at the respective ends of said sections 7 so as to draw said sections tightly against the rolls and with suflicient force to effectively sustain the weight thereof when the rolls are hung in, or moved through space.

Incident to the fact that the strands constituting the member 6 are diagonally opposite each other where they pass freely over their respective sheaves 12, the weight of the rolls AA is distributed to induce and maintain equilibrium of balance. In consequence thereof, the rolls when lowered or hoisted in the air, occupy true vertical positions and when the rolls are thrust against the ground, their flat lower faces BB are inparallelism with the ground so as to come fiatwise thereagainst. In this manner, I am able to prevent side sway of the rolls or canting thereof and am able to avoid any sudden thrust of the corners of the rolls against the ground that might result in serious injury to the paper.

Each of the sections 7 is covered with can'- vas tubing 21 whose ends are formed into cars 22. These cars come inside of the sheave frames 11. In this manner, no metal parts are permitted to touch the paper rolls A -A. Incident to the fact that the sections 7 are formed of hempen rope and same are covered with canvas tubing, these sections are semi-pliable and form a cushion against the supported load; i

I claim:

1. A sling comprising a pair of identical load gripping sections, sheaves at the ends of said sections, and a load sustaining and force applying member having two ends respectively connected to the sections and trained over all of said sheaves so as to draw the sections together under the action of the supported load.

2. A sling comprising two identical sections, each formed of flexible material provided at its ends with sheaves and frames supporting the sheaves, pliable tubing extending over each section and against the inner surfaces of the sheave frames, and a load sustaining and force distributing means connected with said sections and trained over the sheaves so as to move the sections together under the action of the supported load when the latter is sustained in flight.

3. A sling comprising two flexible sections provided at their ends with sheave frames, the said sections having non metallic protective surfaces terminating at the inner faces of the sheave frames, and means trained over the sheaves of said frames for drawing said sections together in gripping contact with a sustained load THORVVALD XV. JENSEN.

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