Method and means for forming, inserting and closing zigzag wire

Details Method and means for forming, inserting and closing zigzag wire Method and means for forming, inserting and closing zigzag wire

1978-03-31

1979-05-22

Dost, Gerald A.

B42C 512

Patent

active

041551346

ABSTRACT:
A system for forming zigzag wire binder material in a continuous strip, storing the strip as it leaves the forming station, and severing lengths as needed at an adjacent station at which the binder lengths are inserted in books. The invention permits the binder strip forming mechanism and the binder cutting and inserting unit to be at a single location because the storage mechanism placed between these two units is responsive to speed differences between the strip forming and binder inserting units to temporarily stop one unit or the other until the length of binder strip in the storage unit is brought within a certain range. The inserting unit has novel means for forcing the opposite ends of the binder loops into the book holes, making the unit especially useful for heavy count books. This novel inserting means includes two series of pins which move in opposite directions to force the loops into the holes.

REFERENCES:
patent: 2555290 (1951-05-01), November

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