Machine for erecting strawberry lug

Details Machine for erecting strawberry lug Machine for erecting strawberry lug

1978-10-23

1980-08-19

Spruill, Robert Louis

93 49R, 93 49M, B31B 126

Patent

active

042178150

ABSTRACT:
Method and apparatus for forming a tray are disclosed. The tray has at least one transverse hollow wall formed by a pair of substantially parallel, spaced flaps that are folded down from a transverse bridge. Each flap is secured to a tab folded upwards from the bottom of the tray. A pair of pivotally-mounted folding arms located above the tray rotate the two flaps downwardly while a mandrel located beneath the tray forces the two tabs upwardly into a substantially parallel, spaced relationship, whereby each tab contacts and becomes secured to its respective flap.

REFERENCES:
patent: 2863369 (1958-12-01), Crane
patent: 3318204 (1967-05-01), Crane
patent: 3478653 (1969-11-01), Byrne
patent: 3797370 (1974-03-01), Sawada
patent: 3965804 (1976-06-01), Elford
patent: 3978774 (1976-09-01), Royal
patent: 4034656 (1977-07-01), Raudat
patent: 4159797 (1979-07-01), Roozee

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