Handling: hand and hoist-line implements – Grapple – Expanding
Patent
1979-12-21
1981-09-29
Cherry, Johnny D.
Handling: hand and hoist-line implements
Grapple
Expanding
294 96, B66C 154
Patent
active
042919100
ABSTRACT:
Apparatus is described for grasping hollow bodies, such as bottles, from the inside. It is particularly useful in protecting grasping equipment used in conjunction with bottle coating equipment. On a movable rod inside a housing are mounted a structure adapted to engage the rim of the bottle and grasping arms which can be inserted into the neck of the bottle. The rod is spring-biased toward a position in which the structure and the grasping arms are retained within the housing. To grasp a bottle, a force is applied to the rod against this spring-bias so as to urge the rod, the structure and the grasping arms toward the bottle. At an intermediate point on the outward stroke, the structure is released from the rod. If the structure engages the rim of the bottle after its release and before the outward stroke ends, the structure is prevented by a slider from moving back into the housing and relative movement between the rod and the structure causes the grasping arms to engage the inside of the bottle. If, however, no bottle is present, the structure is resecured to the rod toward the end of its outward stroke and on the return stroke of the rod the structure is returned to within the housing. As a result, the grasping arms and rim engaging structure do not remain outside the housing and are not coated with the coating when a bottle is not present.
REFERENCES:
patent: 3722710 (1973-03-01), Ixer et al.
patent: 3863753 (1975-02-01), Shank
patent: 3944058 (1976-03-01), Strauss
patent: 4154350 (1979-05-01), Frohn
Cherry Johnny D.
Societe Generale pour l'Emballage
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