Machine for stiffening sheet material

Details Machine for stiffening sheet material Machine for stiffening sheet material

1980-06-26

1982-08-17

Lawson, Patrick D.

Boot and shoe making

Upper machines

Loose upper shaping

118315, 425521, A43D 1100, B05B 706, B28B 300

Patent

active

043441998

ABSTRACT:
A device for stiffening portions of sheets of flexible material including a reciprocable and rotatable nozzle disposed upon an extruder, the nozzle having a generally V-shaped nose section and a pair of wings disposed therebehind.

REFERENCES:
patent: 3138810 (1964-06-01), Becker
patent: 3245100 (1966-04-01), Choice et al.
patent: 3360815 (1968-01-01), Forma
patent: 3464073 (1969-09-01), Boddy

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