Low level cultivation tunnels

Details Low level cultivation tunnels Low level cultivation tunnels

1978-05-30

1980-02-05

Burr, Edgar S.

Plant husbandry

Algae culture

47 2, 47 19, 111 1, A01G 1302

Patent

active

041865200

ABSTRACT:
Apparatus for forming and mounting in position wire arch supports for low level cultivation tunnels comprising in combination: a support chassis provided with or adapted to be coupled to drive means for displacing the apparatus in a given direction and rate; arch forming means carried by the chassis for forming arch supports from arch wire blanks; and arch displacing means carried by the chassis for imparting to each arch a displacement having a first component of the given rate and being directed opposite to the given direction and substantially normally to the plane of the arch and a second component directed downwardly and in the plane of the arch.

REFERENCES:
patent: 3000139 (1961-09-01), Bezzerides
patent: 3353297 (1967-11-01), Gervais
patent: 3661481 (1972-05-01), Haviland et al.
patent: 3945330 (1976-03-01), Leavitt et al.

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