B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
294/19, 214/70
B66C 3/02 (2006.01) B66C 3/00 (2006.01) B66F 9/12 (2006.01)
Patent
CA 1173473
GRAPPLE PIVOT SNUBBER Abstract of the Disclosure A grapple assembly includes a grapple suspended from an outer end of the grapple boom by means including a double clevis permit- ting the grapple to swing about a pair of crosswise disposed pivot axes. A double clevis is pivotally connected to the lower end of an upright output shaft which is rotatably mounted in the grapple boom. A fluid supply passage is provided in the shaft and has a first pair of outlets disposed diametrically from each other and in a vertical plane containing one of the pivot axes and a first pair of snubber hoses are connected between these outlets and the grapple frame. Similarly, a second pair of out- lets of the passage are located diametrically from each other and in a vertical plane containing the other pivot axis and a second pair of snubber hoses are connected between these outlets and the frame. A hydraulic circuit is provided for selectively pressurizing the snubber hoses to thereby stiffen them and in- hibit swinging movement of the frame about the pair of axes. In a second embodiment of the invention, the fluid supply passage in the output shaft has only a single outlet and it is located on the axis of the shaft and connected between this outlet and a blind bore on the frame is a single snubber hose which inter- sects the pivot axes of the frame.
390645
Borden Ladner Gervais Llp
Deere & Company
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