| 摘要 |
812,753. Reconditioning business machine cards. CUMMINS-CHICAGO CORPORATION. Jan. 24, 1954 [Jan. 25, 1955], No. 2339/56. Class 96. Cards which have become unsuitable for use in sorting and tabulating machines &c. by reason of creasing are restored to a crisp, flat state by deforming at least a portion of each card at closely spaced points and then compressing to bring it substantially to its original dimensions when new. As illustrated, Fig. 1, the cards are stacked at 25 for automatic feeding by mechanism 40 which includes a rubber feed roller 41, at the end of a rocking lever 42 spring- biased at 43, and driven by a motor 50 and speed-reduction gearing &c., the cards being fed e.g. at 300 per minute to rollers 71, 72 which pass them between gauging rollers 73, 74 for actuating mechanism to divert cards which are too thick by reason of staples, or gummed tape &c. secured to them. Rollers 91 . . . 96 then pass the cards to knurling rollers 101, 102 and flattening rollers 103, 104, the reconditioned cards being delivered at 26. The knurling points of one roller of each pair come between those of the other so that minute closely spaced areas of indentation are formed which are not completely eliminated by the flattening rollers. Fig. 13 shows the indentations, which are barely visible in the finished card, to a greatly enlarged scale.
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