US2603523A - Nonslip load hoisting saddle sling assembly - Google Patents

Description

y 1952 G. CAMERON ,6

NONSLIP LOAD HOISTING SADDLE SLING ASSEMBLY Filed Feb. 23, 1950 INVENTOR. Gordon Camera/2 Patented July 15, 1952 This invention relates to load hoisting slings for cranes, and more particularly an improved non-slip load hoisting saddle sling assembly for handling single as well as multiple pieces of relatively long, and heavy metal stock.

In the past elongated metal stock of this nature has been handled by wire cable or rope slings which are difficult to attach and detach, require daily inspection, become kinkedgare unsafe, and have a relatively shortlife due'to rapid wearand tear. 3 1- I.

= The main object of this invention is to .provide a novel load hoisting sling assembly which evercomes such difliculties, is adjustable, easyato attach and detach, and capable of handling all kinds of long stock including iron and steel bars, angles, pipes, flats, and rounds in bound as well as unbound condition. Another object is to provide an opensaddle sling which can support a load of relatively heavy and elongated stock without slippage.

A further object is to provide ahoisting sling which is simple and economical to manufacture and maintain in satisfactory operating condition. These and other objects are accomplished by my invention which is described below.

According to the invention there is provided a non-slip load hoisting saddle sling assembly consisting of a beam, means for suspending such beam from a crane hook in a substantially horizontal position, and a plurality of open (nonclamp) saddle slings suspended from such beam for supporting a load of elongated stock horizontally under the beam. The slings are unique in that each is composed of a plurality of roller chains of equal length connected at their corresponding opposite ends by hinge-pins to a plate and to a buckle. The plate is permanently connected to one leg, while the buckle is detachably connected to the other leg of a divergent suspension chain having a common link which is detachably connected to a hook depending from the beam. The arrangement is such that as many slings as necessary can be hung on the beam, the

resulting saddles being positioned under the load at suitably spaced intervals so that, when the beam is lifted, the open roller-chain saddles allOW the load freely to adjust itself, due to gravity, in a non-slip, horizontal position which is maintained during the hoisting operation. Long as well as short loads can be handled by the same device.

In the drawing:

Fig. l is a perspective view of an assembly illustrating the invention;

I 2,603,523 e I NONSLIP LOAD HoIsTING SADDLE sLiNG P 1 ASSEMBLY e raoacam rtn, BattlelfCreek, Mich. I f I "A plicationl ebruary'23, 1950, Serial 1261145365 7 3 i Y V Fig. 2 isan enlarged fragmentary planyiew of an open saddle;

Fig. 3 is a fragmentary viewih side elevation of the saddle; and

Figs. 4, 5 an care detailsectional views. taken; on lines 45- 5, 5 5 and t 'firespectively, of Fig.11

As shown in the drawing, the illustrated device comprises a pluralityo'f slings lllsuspended from a beam l2 suspended, in turn,"froml a,.crane hook M. Thebeam I2 consists'of a pair of steelch'a'nnels [6 arranged in spaced back-to-back relation and secured together by bolts l8 which extend.

through suitable spacers 19.} Pins 25, Iinthe, form of ,bo1ts,.are also provided on the b eam"l2' for connection With'divergent crane-hook suspension cables 2|, the pins extending across the space between the webs 23 of the channels, and being located above the longitudinal axis of the beam, equally spaced from and on opposite sides of the vertical axis of the, beam, so that normally the beam hangs in a substantially horizontal position from the crane hook l4.

As many sling supporting hooks 22 as desired are mounted on the beam I2 in substantially equally spaced relation longitudinally of the beam, each hook 22 being pivoted to a pin 24, in the form of a bolt, mounted below the longitudinal axis of the beam and extending across the space between the Webs 23 of the channels [6. The hooks 22 depend below the bottom of the beam for ease in hanging a common section or link 26 of a sling-suspension chain 28 having divergent legs 30 and 32 thereon, the chain 28 constituting a part of the sling Ill.

The sling [0 also includes a multiple rollerchain saddle 34 having a plate 36 on one end and a buckle 38 on the other end. The plate and buckle are similar, except that the plate 36 is permanently linked to leg 32 of chain 28, while the buckle 38 is provided with a slot 40 for detachable connection witha hook 42 on the other leg 30 of chain 28. A plurality of roller chains 44 of equal length are connected at their corresponding ends to the buckle and plate by hingepins 48 which extend through holes provided therefor in spaced projections 48 on the buckle and plate. Thus, the roller chains are held in uniformly spaced relation and are hinged at their ends to the buckle and plate, respectively.

For handling 12'-0 to 25'-0" long metal bar stock of about 5-tons per load, a beam about 14'-0" long, as shown, has proved very'satisfactory. The same slings [0 are used for both long and short bar stock by merely shifting the outer slings to the proper hooks 22 to accommodate the length of the bar stock being hoisted, the weight of the load being about the same in either case. Thousands of tons of material have been moved with the device without any maintenance, except an occasional dipping in light engine oil which, when drained ofi, washes away scale that adheres when raw stock has been handled. This oil also lubricates the parts. 7

The invention is readily adjustable and suitable for moving all kinds of long iron or steel bar stock, angles, pipes, flats and rounds. The load is self-adjusting in the open slings, and ma be attached and released with ease. I

I claim:

1. In a non-slip load hoisting saddle sling-assembly consisting of a plurality of 'roller chains of equal length, a plate connectedbya common hinge-pin to one end of said roller chains, a

buckle connected by a common hinge-pin to the other end of said roller chains, a suspension chain having divergent legs connected to a common section, means permanently connecting one leg to said plate, and means detachably connecting the other leg. to said. buckle, whereby an elongated loadis'free 'jto cradle itself uniformly in said rollerechain'sling in a substantially horizontal position when the assembly is .elevated.

2. A. non-clamphoisting. sling consisting of .a flexible suspension member having a common verticaLportion connected to divergent legs a plate linked to the lower end of one of said legs,-a bucklehooked on the lower :end of the other'.leg,,.and a multiple roller-chain saddle connected atone end to the'lower edgeof said plate and at the other end to the lower edge of said buckle, said saddle consisting of a plurality of roller chains of equal length extending from the plate to the buckle, so that a load is free to adjust itself therein by gravity when hoisted in the roller chain saddle.

3. In a non-clamp hoisting sling, the combination comprising a plate and a buckle, each having uniformly spaced projections extending from an edge thereof, a hinge-pin extending through such projections, and a multiple roller-chain saddle extending between said plate and buckle, said :saddle consisting of a plurality of roller chains 7 vo'fvequal length pivotally connected at their opposite ends to such hinge-pins, the ends of said chains being uniformly spaced from one another-by said projections, so that a load is free to adjust itself therein by gravity when hoisted in'th'e' roller chain saddle.

GORDON CAMERON.

. REFERENCES CITED The following referencesare of record in'the file of'this patent:

UNITED STATES PATENTS Number Name Date 386,337 'Miller July 1'7, 1888 949,595 :Osterhaus. Feb. 15, 1910 967,275 Walker' Au-g..l6, 1910 1,230,515 Poteet June 19, 19.17

2,213,718 Reedet'al. Sept. 3, 19.40

2,290,565 'Lagana lJu1y'21, .1942

2,364,170 'Sonntag IDec. 5, .1944

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