Method and apparatus for introducing water-proof sheeting into t

Details Method and apparatus for introducing water-proof sheeting into t Method and apparatus for introducing water-proof sheeting into t

1974-09-04

1976-07-13

Shapiro, Jacob

61 35, E02F 522

Patent

active

039686582

ABSTRACT:
Method and apparatus for placing a horizontally elongated flexible material in vertical position in a trench are provided in which a portion of the trench is cut and the material placed therein. The open trench is then filled and the next section of the trench is cut and material placed therein. The process is separated until the desired length of the trench has been cut and the material has been placed therein. A cassette is provided which contains the material. The cassette has a slot to permit the material to pay-out as each section of trench is cut.

REFERENCES:
patent: 1787902 (1931-01-01), Herfort
patent: 3298183 (1967-01-01), Grether et al.
patent: 3309875 (1967-03-01), Niederwemmer
patent: 3313115 (1967-04-01), Kniefel
patent: 3564855 (1971-02-01), Morner
patent: 3590588 (1971-07-01), Draper
patent: 3603099 (1971-09-01), Zakiewitz
patent: 3618329 (1971-11-01), Hanson
patent: 3759044 (1973-09-01), Caron

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