Implements or apparatus for applying pushing or pulling force – Step-by-step traveling bar – Pawl actuated
Patent
1978-02-21
1979-10-09
Spar, Robert J.
Implements or apparatus for applying pushing or pulling force
Step-by-step traveling bar
Pawl actuated
244137R, B66D 148
Patent
active
041703413
ABSTRACT:
This aircraft parcel-pickup device provides for the pickup of a parcel on the ground by an aircraft in flight. A power unit is provided to pay out parcel-pickup cords from a first sheave and to tension a first spring cord reeving onto a second sheave, the two sheaves being connected together and one reeving on spring cord while the other is reeving off parcel-pickup cord. A manually operable pawl and ratchet is provided to prevent the parcel-pickup cords from reeving in, after being selectively extended, to facilitate engaging the parcel by a hook carried by parcel-pickup cords. After such engagement, the resilient first spring cord compensates for the shock of contact between moving and nonmoving members and thereafter draws the parcel-pickup cord and the parcel to the aircraft. The spring cord is provided with a governor to limit the speed of travel of the parcel as it nears the aircraft. The governor is powered in one direction of travel by connections with the returning parcel-pickup cord and during such travel a second spring cord is being tensioned and powers the governor in its travel in the opposite direction. The parcel-pickup cord is constructed to bend forward and to resist bending in the opposite direction.
REFERENCES:
patent: 3176940 (1965-04-01), Echeverria, Jr.
patent: 3379096 (1968-04-01), Gillham et al.
patent: 4017042 (1977-04-01), Jacobson
Noland Kenneth W.
Spar Robert J.
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