Sign opening, closing and locking device

Details Sign opening, closing and locking device Sign opening, closing and locking device

1977-02-22

1978-08-22

Mancene, Louis G.

Card, picture, or sign exhibiting

Signs

With raising or lowering means

40624, G09F 700

Patent

active

041078640

ABSTRACT:
A sign opening, closing and locking device for use on a conventional rectangular, box-like sign having one or more advertising panels hingably attached to the frame. The device comprises gear racks and pinion, a raceway for containing the racks, linkage from the racks to the front panel, and a crank for rotating the pinion. In operation the crank is mated with a shaft to rotate the pinion. Rotation of the crank and the engaged pinion cause linear movement of the racks and the attached linkage resulting in an initial disengagement of the linkage from a stationary lock pin. Further rotation results in an outward movement of the front panel as it is rotated on its hinges. Opposite rotation of the pinion results in closure and locking of the sign.

REFERENCES:
patent: 817907 (1906-04-01), Feist
patent: 979138 (1910-12-01), Ericson
patent: 2164341 (1939-07-01), Morrison
patent: 3013475 (1961-12-01), Spangler

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