Three-knife trimmer

Details Three-knife trimmer Three-knife trimmer

1979-11-29

1981-11-17

Schran, Donald R.

Cutting

Two tool pairs, driver for one pair moves relative to driver...

Successively acting

83327, 83646, 83925A, 83215, 74660, B26D 109, B26D 111

Patent

active

043004270

ABSTRACT:
Cutting apparatus with three blades, for trimming three sides of an inner book or the like, having a drive system which permits the simultaneous trimming of two opposed sides of the work closely followed by the trimming of the third side. Operation of the third cutting blade while the other two are still in motion is permitted by driving the simultaneously operated blades along a multi-directional orbital path.

REFERENCES:
patent: 1980220 (1934-11-01), Morton
patent: 3057241 (1962-10-01), Chambon
patent: 3528332 (1970-09-01), Thumim
patent: 4202232 (1980-05-01), Muller
patent: 4223568 (1980-09-01), Brems

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