US2367252A - Grapple - Google Patents

Description

Jan-.16, 1945. v R. J. WILLIAMS 2,367,252

GRAPPLE Filed Dec. 3o, 1945- 2 sheets-sheet 1 Jan-16,1945 R. J. WILLIAMS 2,367,252

GRAPPLE Filed Dec. so', 1945 2 sheets-sheet 2 1 voc-nto@ altar/M441,

l scale of la jaw bar.

n Patented Jan. 16, 1945 UNITEDl STATES PATENT OFFICE GRAPPLE l Raleigh J. Williams, New Orleans, La. Application December 30, 1943, Serial No. 516,298

2 Claims.

This invention relates generally to the class of grappling devices and pertains particularly to an improved hook or grapple designed for thehalldling of commodities loaded in cotton, burlap or sisal sacks. Y

Aprincipal object of the present invention is to provide a grapple which can be employed for small pointed pins carriedby relatively movable opposing bars in such a manner that the pins are capable of hooking into the lled sacks at opposite sides thereof and in the top belly in such a manner as to readily lift the sack without damaging it, from a stack of other lled sacks ork lower the sack onto a pile and readily release the same.

Another object of the invention is to provide a grapple for the purpose set forth which isv of which arms is designated lil. The arms` are in crossed relation adjacent their upper ends and are pivotally coupled togetherby the nut and bolt pivot coupling Il. The major length of each of the arms is below the pivot member Il for the pair and one pairof arms is disposed in spaced 'side by side relation with thearms of the other pa1r.

Above the pivot couplings Il the ends of the arms of one pair are joined to the ends of the arms of rthe opposite pair by the transverse bars l2 and at the point of connection of each arm with a bar I2 'there is secured an end of a short chain 'I section I3 and these short chain sections are simple in construction and may be inexpensively manufactured.

Still another object of the invention is to pro'- vide a grapple of the character stated in which the bag penetrating pins are mounted in a supporting body in a novel manner whereby they may be readily replaced when and'if necessary and in a manner to avoid damaging the bag material in which the pin points enter.

The invention will be best understood from a consideration of the following vdetailed description taken in connection withthe accompanying drawings with the understanding that minor changes may be made in the structure rso longas such changes do not depart from the invention as claimed.

In the drawings:

Figure 1 is a View in side. elevation of the grapple of the present invention. l

Figure 2 is a view in topplan of the same.

Figure 3 is a view in lside elevation of the grapple, the lifting chains being omitted.

Figure 4 is a fragmentary `View on an enlarged Figure 5 is a section on the line 5--5 'of Figure 4. l

eol

coupled together to a center ring lll which is at the vertical center oi the grapple.

At the outer ends of the lower longer portions of the arms l0 each arm is turned slightly downwardly away from the top of the grapple to form permanently secured as by welding or in any other suitable manner, to a jaw bar I6 which is of a length materially greater than the width of the grapple so that a portion of such bar extends at each end outwardly beyond the plane of the arm to which it is attached.

Each of the jaw bars has formed transversely therethrough a series of apertures Il each of which is enlarged Aslightly at its inner end as indicated at Il and extending through each aperture is the threaded shank portion I8 of a pin i9. The outer end of each pin shank i8 has a head 26 rwhich engages the outer side or back of the jaw bar through lwhich it extends and there is threadedy upon the pin Shank from the inner or pointed end, a nut 2| which is set back into the enlarged inner end portion I'I' of the aperturek nut 2l, is covered so that it cannot form a hole Figure 6 is a view of the top part of a grapple, I

a portion being in section, showing a modied lift means connected with the upper ends of the arms. y

Referring now more particularly to the drawin the body of a sack which might permit some of the contents of the sack to leak out.

The points of the pins of one jaw bar are, of course, directed inwardly toward the points of the pins of the opposite bar and the extent to which the jaws of the grapple maybe separated i or opened depends upon the length of the short chains I3. It will be readily seen, however, that with a grapple constructed in accordance with the present invention a filled sack of material may be readily grasped in the top belly between the pins of the opposing jaws so that the sack can be raised and lowered as desired and at the same time the pins because of the guarded manner in which they are secured in the jaws and because of the fact that they are relatively small, will not tear the sack material or form a hole in the saine of suicient size to allow any of the contents to be lost.

The grapple of the present invention is designed particularly to be used with a hoist of a suitable character to facilitate the loading or unloading of Various vehicles such as trucks or cars and the like.

If desired the short chain section may be replaced by or there may be used instead of such chain section, the links 22 which as shown in Figure 6, has connected to its center a common ring 23.

I claim:

1. A grapple designed for the handling of lled sacks comprising pivotally coupled arms, jaw bars supported in spaced parallel relation by said arms for relative movement, a plurality of pin members extending through each of said jaw bars and each having a pointed end, the pointed ends of the pin members of one jaw bar being opposed to those of the other jaw bar, said pins having heads upon their other ends engaging the jaw bars, and a nut threaded on each pin and counter-sunk in the adjacent jaw bar adjacent the pointed end of the pins.

2. A grapple for handling lled sacks compris ing two pairs of crossed arms, the arms of each pair being pivotally joined, bars connecting the upper ends of the arms of one pair with the upper ends of the arms of the adjacent pair to maintain the two pairs of 4arms in position for oscillation on a common axisyeach of said arms at its other end being turned downwardly away from the said bars, a jaw bar connecting the turned end of each arm of one pair with the corresponding adjacent endof the opposite arm of the other pair, said jaw bars extending at their ends beyond the outer sides of the pivoted arms, a plurality of pointed pin members carried by each jaw bar and directed in opposed relation with the pointed ends of the pin members of the other jaw bar, and connecting means between the four upper ends of the two pairs of arms by which the handling of the grapple is eiected.

RALEIGH J. WILLIAMS.

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