Patent GB-431353-A (GB)
Title: Improvements in or relating to paper equipment for calculating and the like machines
IPC: B41J11/48
Filed: 1934-01-05
Abstract: 431,353. Typewriters &c. BURROUGHS ADDING MACHINE CO., 6071, 2nd Boulevard, Detroit, Michigan, U.S.A. Jan. 5, 1934, No. 477. Convention date, Feb. 2, 1933. [Class 100 (iv)] Paper-guiding arrangements; ink-ribbon mechanism.-In calculating or like machines having a pair of ink ribbons arranged along the printing line, guides co-operate with the ends of two paper strips passing in contact around the platen to direct one paper strip between the ink ribbons, and the other paper strip between the rear ink ribbon and the platen. The arrangement, which may be applied also to machines equipped with a single ink-ribbon, may comprise guide-members which are normally positioned over the side-edges of the paper strips and are automatically moved out of the path of the type-members to permit of printing upon the full width of the paper strips. The guide C shown in Fig. 1 consists of a stamping having a base 30, guide-fingers 32, 33, 34, and a cross-bar 38, the base being secured to a plate 10 carrying spools and guides 20 .. 25 for an ink ribbon which is arranged in two plies A, B extending in part of the platen 12. The guide-fingers are inserted between the ribbon-plies, the guide-fingers 32, 33 being arranged over the side edges of the paper strips 35, 36, and the guide-finger 34 being arranged at one side of the paper strips. The guide-finger 34 is formed with a bend 37 for deflecting locally the ribbon-ply A and thereby separating the bottom edge thereof from ribbon-ply B and the guide-finger 33. To facilitate insertion, the paper strips 35, 36 are cut or bent to provide points 40, 41 at opposite sides. When the paper strip 35 is inserted, the point 40 is prevented by the bend 37 from striking the ribbon-ply A, and is deflected upwardly between the ribbon-plies by the guide-finger 33. When the paper strip 36 is inserted, the point 41 strikes the part of the ribbon-ply A behind the guide-finger 32, and is deflected upwardly between the platen and the ribbon-ply A. To permit of printing upon the full width of the paper strips, the guide-finger 32 may be arranged slightly to one side of the paper strips, and the guide-finger 34 may be formed as a short member which is not connected to the cross-bar 38. In the construction shown in Fig. 4, the guide-fingers are moved laterally at each operation of the machine to permit of printing on the full width of the paper strips. For this purpose, guide-fingers 50, 54, 55 corresponding to the guide-fingers 32, 33 34 are formed on slides 51, 57 which engage a forked slide 63 and a forked lever 64 connected thereto, a slide 63 being engaged by a bellcrank 68 connected to the line-spacing mechanism. At each operation, the slides and guidefingers are moved laterally out of the path of the printing-members. Specifications 263,097, [Class 100 (iv)], 265,140 and 265,152, [both Class 106 (i)], are referred to. Web-cutting arrangements.-The cross-bar 38, Fig. 1, of the guide C is formed as a tear-off blade 39 which is spaced from the platen 12 and, while being sufficiently rigid to resist the tearing action, can, when pulled away slowly, yield considerably to release the paper strips 35, 36 if jamming has occurred.