Wireworking – Article making or forming – Electric lamp or electric space discharge device electrode
Patent
1979-11-05
1981-08-04
Weidenfeld, Gil
Wireworking
Article making or forming
Electric lamp or electric space discharge device electrode
11 1A, 72187, 140105, B21F 4500
Patent
active
042816904
ABSTRACT:
A web of undulate wire is converted into a series of coherent C-shaped binders of the type known by the trademark Wire-O and used to bind stacks of paper sheets or the like in the making of steno pads, brochures, calendars and similar stationery products by continuously moving the web lengthwise at a constant or variable speed, by imparting to successive increments of one marginal portion of the moving web a concavo-convex shape in stepwise fashion so that the one marginal portion resembles (in cross-section) one-half of the letter C, and by thereupon imparting to successive increments of the other marginal portion of the moving web a concavo-convex shape in stepwise fashion so that the thus converted other marginal portion becomes a mirror image of the converted one marginal portion. The imparting steps include deforming the respective marginal portions from the inner toward the outer edges thereof.
REFERENCES:
patent: 2130318 (1938-09-01), Cruzan
patent: 2832392 (1958-04-01), Spitz
patent: 3566927 (1971-03-01), Adams
patent: 4047544 (1977-09-01), Seaborn et al.
E. C. H. Will (GmbH & Co.)
Kontler Peter K.
Ramsey K. J.
Weidenfeld Gil
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