Device for tensioning a strapping band positioned around a packa

Details Device for tensioning a strapping band positioned around a packa Device for tensioning a strapping band positioned around a packa

1983-08-03

1986-03-11

Larson, Lowell A.

Wireworking

Applying wire

Binder tightening and joining implements

1401235, B21F 902

Patent

active

045748489

ABSTRACT:
A device for tensioning a strapping band obtained from a supply reel and positioned around a package, and for fastening the overlapping ends of the band together with a sleeveless connection, as well as for cutting off the length of strap not untilized in wrapping the package and leading from the supply reel. A motorized drive mechanism for the upper half of a band-fastening tool and that for the tensioning wheel consists of a single motor that first, while it rotates in one sense, powers a tensioning wheel which tensions the strapping band, and then, subsequent to a shift in gear that depends on the tension in the band, reverses its rotation and powers the shaft of the upper half of the band-fastening tool. The gearshift consists of a pivoting lever that can be shifted against the force of a spring out of its initial position. The pivoting lever engages a spring-loaded gearshift lever through a set screw. The pivot lever is activated by the reaction force of the drive mechanism.

REFERENCES:
patent: 1815345 (1931-07-01), Colman
patent: 2593933 (1952-04-01), Strawn
patent: 3308686 (1967-03-01), Magg et al.
patent: 3506041 (1970-04-01), Angarola
patent: 4137788 (1979-02-01), Fischer
patent: 4218969 (1980-08-01), Kasuga

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