Patent GB-274673-A (GB)
Title: Improved manifold billing mechanism for typewriting machines
IPC: B41J15/02
Filed: 1926-09-20
Abstract: 274,673. James, R. W., (Remington Typewriter Co.). Sept. 20, 1926. Sheet-feeding arrangements; paper-shelves; ink-ribbon mechanism; platen rotation for blanking. - In manifold billing apparatus for typewriters of the kind in which a sheet consisting of a number of forms is wrapped round the platen a number of times together with carbon paper, the sheets are fed singly, by means of a pusher co-operating with a fold in the sheet, to the space between a carbon-paper web and tapes which are mounted on spring rollers and are attached to the platen, means being provided for operating the pusher and then rotating the platen a number of times; in a modification the pusher is omitted and the tapes are provided with means for feeding the sheets. Fig. 7 shows a suitable sheet 23 of the kind consisting of a number of forms 24 - - 27, the height of the form 24 being equal to the circumference of the platen, and the forms 25 - - 27 being of progressively increasing heights and having the lines arranged at increasing intervals. The sheet is now formed with a feeding- fold 24b, and an aperture 28<Y> for engaging a pin on a pile table described below. A doubled sheet may be employed instead of a single sheet 23, each half consisting of a number of forms and having a feeding-fold, and one half having a carbon backing. In the apparatus shown in Figs. 1 and 6, the platen carriage 13 is equipped at the rear with spring rollers 20, 21 carrying a carbon web 19 and tapes 22, the web and tapes being attached to the platen 16 by a removable or hinged rod 18. An inclined shelf or pile table 28, secured to a standard 28<a> on the table 11, is provided with a pusher 30 having depending fingers 32, the pusher running on guides 31 and being connected to a lever 44. The platen is geared by a small pinion 47 and an idler 48 to a large pinion 46 which is mounted on the end 14 of the carriage and is connected by a universal joint 46<b> to a telescopic shaft 49. The shaft is connected by gears 50, 51 and a ratchet-clutch to a pinion 53 co-operating with a sector 54 on a bell-crank 39 connected to a pedal 36. The bell-crank has a pivoted tappet 42 which co-operates with a pin 43<a> on a rod 43 connected to the lever 44. The sheets are stacked on the pile table upside down and with the folds 24<b> to the front, the apertures 28<I> engaging a knife-edged pin 28b secured in one of a number of holes in the table. The top sheet is held in the path of the fingers 32 by means of a block 90 which engages the bottom of the pole and is urged upwards by a coiled spring 92 attached to bell-cranks 93. When the pusher descends, rods 94 thereon engage the bell-cranks and the pressure of the spring on the block is relieved. On depressing the pedal, the fingers feed the top sheet into the bite of the carbon web and tapes, and the tappet 42 then releases the rod 43 and permits a spring 44<c> to return the pusher to normal position. On further depression of the pedal, the platen is rotated to wind the sheet and carbon web round the platen; for use with a sheet of four forms, the platen receives four revolutions. To ensure engagement of the sheet with the bite of the carbon web and tapes, the roller 21 is provided with an elliptical roller 35 of rubber &c. arranged so that when the platen starts to rotate, the part of the roller at the end of the major axis engages the sheet and propels it into the bite. The outer form is then typed, the typing being manifolded on the other three forms. Line-spacing is effected by the ordinary mechanism or by the platen knob 64, the platen being retained by a detent 65 co-operating with a ratchet-ring 66. When typing is complete, the detent is released and the spring rollers rapidly unwind the tapes and carbon web and eject the sheet. The sheet is guided during ejection by means of a flexible plate 77 which is pushed aside by the sheet when being fed to the platen. In the apparatus shown in Fig. 10, the pusher 30 and roller 35 are dispensed with, the tapes 22<x>, wound on the spring roller 21<x>, being provided with a curved blade 80 adapted to feed the sheets 23 to the platen 16<x> by engagement with folds 24b.