Apparatus for cutting a slide fastener chain

Details Apparatus for cutting a slide fastener chain Apparatus for cutting a slide fastener chain

1984-11-14

1986-06-17

Meister, James M.

Cutting

Tool engages work during dwell of intermittent workfeed

Work-sensing means to control work-moving or work-stopping...

83364, 83371, 83921, B26D 528

Patent

active

045949255

ABSTRACT:
For severing a continuous slide fastener chain into individual slide fastener lengths, the chain having succesive coupling element portions and element-free gap sections on a stringer tape, a cutting station is preceded by a detecting unit. The detecting utilizes at least two sensors for sensing the leading end of each successive coupling element portion of the chain which is being conducted to the cutting station. The sensors are longitudinally spaced along the chain's path to the cutting station and produce respective command signals one after the other to a chain drive to reduce the moving rate of the chain in step fashion to a low speed as the gap section approaches the cutting station. This enables uniform and adequate quality fastener length cutting to be reliably achieved.

REFERENCES:
patent: 2581937 (1952-01-01), Secrest
patent: 2738007 (1956-03-01), Power et al.
patent: 2754908 (1956-07-01), Proud
patent: 3011375 (1961-12-01), Muller
patent: 3029675 (1962-04-01), Alexander
patent: 3599521 (1971-08-01), Lee
patent: 3776078 (1973-12-01), Perlman
patent: 4043232 (1977-08-01), Jovin

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