Handling: hand and hoist-line implements – Grapple – Expanding
Patent
1977-11-16
1979-05-15
Cherry, Johnny D.
Handling: hand and hoist-line implements
Grapple
Expanding
414626, 414684, 414911, B66C 154
Patent
active
041544706
ABSTRACT:
The disclosure is directed to apparatus adapted for attachment to an overhead crane which lifts and maneuvers material wound on rolls, coils, reels and spools. The apparatus comprises an elongated housing which is suspended in a generally vertical position at its upper end from the overhead crane. An elongated probe assembly constructed for insertion into one end of the roll core is pivotally mounted intermediate its ends to the lower end of the housing so that it is capable of swinging between vertical and horizontal positions. The probe itself includes means for expanding its effective diameter upon entry into the core, thus permitting it to be securely retained within the core and to lift the core from this single internal region of contact. The opposite end of the probe assembly is pivotally connected to the rod end of an hydraulic actuator which is pivotally mounted to the elongated housing. As connected, extension of the actuator rod swings the probe from the vertical to a horizontal position, and retraction of the rod returns the probe to the vertical position.
REFERENCES:
patent: 1868562 (1932-07-01), Chubb et al.
patent: 2770380 (1956-11-01), Anderson
patent: 2841300 (1958-07-01), Berquist
patent: 2932420 (1960-04-01), Mako et al.
patent: 3264029 (1966-08-01), Bellmann
patent: 3734328 (1973-05-01), Dalglish
patent: 3758144 (1973-09-01), Dalglish
patent: 3771666 (1973-11-01), Fournier
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