Pneumatic courier dispatch unit

Details Pneumatic courier dispatch unit Pneumatic courier dispatch unit

1975-02-20

1976-07-27

Love, John J.

Buckles, buttons, clasps, etc.

243 28, B65G 5128

Patent

active

039715310

ABSTRACT:
A dispatch unit for inserting pneumatically propelled couriers into a pneumatic courier system is disclosed. A pair of symmetric pivotable doors extend across the input aperture of the dispatch unit. The doors, linked together by a central sliding member, pivot upwardly in response to upward insertion of the courier to receive the courier and pivot downwardly to close the input aperture after the courier has passed therethrough by force of their own weight. For locations requiring downward insertion of the courier, the dispatch unit is turned upside down and an additional weighted member is operatively linked to each door. The doors pivot downwardly in response to insertion of the courier and pivot upwardly after the courier has been inserted in response to the force exerted by the weighted members.

REFERENCES:
patent: 451619 (1891-05-01), Leaycraft
patent: 681414 (1901-08-01), Fordyce
patent: 1660293 (1928-02-01), Cowley
patent: 1951367 (1934-03-01), Needham

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