US1779702A - Grapple - Google Patents

Description

Oct. 28,1930. E. L. HARRINGTON 1,779,702

GRAPPLES Filed Oct. 29, 1,926

ATTORNEYS.

INVENTORJ Patented Oct. 28, 1930 COMPANY, OF ERIE, PENNSYLVANIA, A COB-PORATION- OF PENNSYLVANIA GRAPPLIEE Application filed. October 29, 926; Serial N 144%, ;i2

' Grappl'es for handling such material as sugar cane require an extended series of grappling teeth and difficulty has been experienced in making such structures rigid enough to sustain the strains incident to the operation of the tool to prevent over-weight of'the implement. The present invention is designed to simplify such a device as toitsside elevation of the grapple. V 11 end view of the grapple open. Fig". 4 a diagram of the threading oi' the v closing cable through the closing sheavesj 5 a section on the line 55 in ,Fig. 2. 1 marks a pivot rod for the grappling jaws and 2 and 3 grappling teeth, or jaws arranged at intervals along the rod and alternoting with each other as clearly shown in Fig. 2: 2 Bars .4 and 5 extend through the j aws 2- and 3' at the bends of the jaws. Links 6 extend from the rods 4 and 5 to a rod 7 which forms the head of the grapple.

Bifurcated closing arms 8 extend from the teeth 2 and sheaves 9 are mounted on the ends of these arms by means of pins 10. A hoisting cable 11 extends from a mounting 12 around a sheave 13. The sheave 13 is mount ed on a pin 14 carried by a plate 15 which is bent upon itself and aroundthe rod 7. The end of the cable 11 is carried over a drum 16 by means of which the hoisting cable is operated.

A. closing cable 17 extends from the mounting 12 past a guide sheave 18 mounted on the rod '7, over a sheave 19, over a sheave 20 carried by a block 21. The block 21 is in the form of a plate folded upon itself around a bolt 21 which in turn is secured to a hanger 22 carried by the rod 7. The cable 17 extends from the sheave 20 under and around the sheave 9 and is returned over a' sheave 23 carried 1n a block 24 formed of a. pia e mounted on a rod 25 which in turn 1s mountedon the hanger The line 17 then I passes over the sheave 26 carried in ablock 26, the block being mounted on'the hanger 22bymeans of tliQIQClQii. The'line 17 then passes under and around a pulley 29," which having the sheave 19 and back past the guide pulley 30 on the shaft 7, and thence over an operating drum 51. V

The-device operates in a manner common to such devices in a general way, that is to say,

by slacking the closing line the grappling hooks, or teeth are opened and by drawing on the closing line pressure is putupon the arms 8 and this operating as a lever not only tends EDWARD L. HARRINGTON, 0F ERIE, PENNSYLVANIA; ASSIGNOR TO: G. H. WILLIAMS to close the teeth 2 but to draw the pivot bar 1 upwardly within the links 6 and thus draw the teeth together. The sheaves extending lengthwise 0f the device are swingingly' mounted so that they readily maintain their alinement with the sheaves on the closing arms.

By thus applying the power to each of the closing arms a rigid frame construction uniting the several arms is avoided and thusa comparatively, light structure may be used as described. The hoistlng and closing lines on both series operate on the drums 1 6 and I 31 respectively. v

What I claim as new is 1. In agrapple, the combination of a series of connected pairs of pivoted jawsarranged side by side; sheaves on a plurality of the aws at one side of the series, said sheaves having their axes parallel with the axes of the aw pivots; sheaves having their axes in a plane at right angles to the axis of the jaws;

and a closing line operating on said sheaves,

said line being carriedirom a sheave on one jaw to a sheave on anothe jaw by the sheaves having their axes at an angle to'the axis of the jaws. V

2. In a grapple, the combination of two series of connected pairs of pivoted jaws arranged side by side; sheaves on a plurality of the jaws at one side of each series, said j j 55 j is at-ithe'end of the tooth ad acent to the arm sheaves having their axes parallel with the axes of the jaw pivots; sheaves having their axes in a plane at right angles to the axis of the aws; and closing llnes for each series operating on said sheaves,-said line being carrled from a sheave on one aw to a sheave on another aw by the sheaves havmg their axes at an angle to the axis of the jaws.

3. In a grapple, the combination of a series of threelpairs 'of-Ipivoted connected jaws ar-v ranged side by side; sheaves on each of the jaws atone side of a series, the axes of the sheaves being in alinement with the axes of the p1V0tS- of the aws; a head; sheaves mounted on the head; and a closing hne extending around the sheave of the middle j aw,

over a sheave on the head, under a sheave on an end aw, over sheaves on the head and under the sheave on the opposite end jaw.

In testimony whereof I have hereunto set my hand. a

j EDWARD L. HARRINGTON.

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