Textiles: manufacturing
Patent
1977-12-23
1979-09-04
McGehee, Travis S.
Textiles: manufacturing
B41L 132
Patent
active
041666437
ABSTRACT:
A train of carbon copy duplicating form sets for use in office machines, comprises a plurality of sets of vertical stacks of sheets. At least some of the sheets comprise sheets having imprinted forms thereon. Carbon transfer means are associated with at least some of said sheets for transferring typed information from one sheet to the other. The sheets are arranged in a vertical stack, and at least one has a trailing end with a severable trailing head marginal portion which extends across the width of the sheet and is demarcated from the remainder of the sheet by a first weakened line which extends across the sheet. A second weakened line extends across the sheet at the opposite end, and a portion extends from the opposite end of the sheet forwardly into a position at which it overlies at least one of the sheets of the next adjacent set and is, for example, secured to this sheet by adhesive or other means. In one embodiment, the lowermost sheet of one set has a forward head portion which extends forwardly of the lowermost sheet and is demarcated from this sheet by the second weakened line. This forward head portion is folded upwardly and then rearwardly and upon iself so that, the last folded portion is secured to the head of the uppermost sheet of the next adjacent set. The lowermost sheet advantageously also includes side marginal portions which are wider than some of the other sheets and which are provided with perforations for facilitating their feed or interengagement. Instead of the sets being interconnected by sheets which are folded upwardly from the lowermost sheet to overlay the top sheet of the trailing head portion of the next adjacent set, the interconnection may be made between all of the lowermost sheets and, additionally, by forming an uppermost sheet of each set with a portion extending outwardly on the normal sheet end and beyond a weakened line thereacross which is folded to overlay the trailing head portion of the uppermost sheet of the next adjacent set. Various other arrangements are possible for effecting the interconnection and the easy demarcation and separation of the sheets and sets.
REFERENCES:
patent: 2172870 (1939-09-01), Fulk
patent: 2319165 (1943-05-01), Sornberger
patent: 2931666 (1960-04-01), Burgmer
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