Patent GB-704959-A (GB)
Title: Improvements in appliance on typewriting, calculating or accounting machines for automatically setting a top sheet to a predetermined line
IPC: B41J11/46
Filed: 1950-10-25
Abstract: 704,959. Typewriters &c. BAUMER, P., [trading as BAUMER, P., [Firm of]]. Oct. 25, 1950 [Oct. 26, 1949], No. 26011/50. Class 100 (4) Feed-roller rotation for condensed-record work.-In a typewriting, calculating or accounting machine having an appliance to feed a sheet to a predetermined line where a characteristic formation is sensed by a feeler member, to control a stop device to arrest feeding, a knife blade is provided for making a further formation in the form of a slit when an entry is booked so that in a subsequent entry the feeler member engages the slit to arrest feeding. A continuous record or under-copy G, Fig. 2, is fed from behind a platen W to receive all the entries from the separate sheets. The appliance may be detachably connected to the platen W of the machine and comprises walls 1 at each side of the machine interconnected by parallel rods 2, 3, 4, Fig. 5, and carrying top-sheet guide plates 5, 6, the latter having transversely adjustable guides 7. Each plate has a pair of outwardly-projecting pins 11, 12, Fig. 2, which engage slots 16, 17 in a pair of plates 13, 14 pinned together at 15 and permanently and rigidly fixed on the axis A of the platen W. When attaching the appliance, the pins 11 and 12 of the appliance first rest in the chain-dotted position of Fig. 2, pin 12 in the slot 17 in plate 14 and pin 11 resting on top of a latch 21 pivoted at 19 on the plate 13 and covering a vertical slot 18. Latch 21 is then moved anti-clockwise by means of a hand pin 22 and pin 11 drops to the full line position in which the guides 5 and 6 as shown in Fig. 2 are directed towards the operator, facilitating the entry of a top sheet B. Rotation of a shaft 25 by a handle 29 or a power drive moves the plates 1 arcuately guided by the pins 11, 12 in the slots 16, 17, into a position where pins 11, 12 are locked in the innermost part of the slots 16, 17 by an end surface 26a of a part 26 on the shaft 25 engaging one of a pair of studs 24. The shaft 25, Fig. 5, has a limited movement determined by a cut-away disc 31 coacting with a pin 32, and rotates gearing 33, 38, 41, 43, 44, 46 and a feed roller 47 which together with spring-pressed rollers 51 feed the top sheet B. A slipping clutch is interposed between gears 38, 41. Rotation of the shaft 25 also moves a cam 34 allowing the feeler 61 to contact the top sheet B so that when the formation in the form of a slot M reaches the feeler the latter is pivoted and a pin 69 thereon engages a surface 70 of a locking disc 68 so releasing an arm 75 of a control element 72 which turns anti-clockwise. A pin 74, in consequence, releases a group of the three locking pawls 54 slightly displaced from each other so that one engages a tooth of the ratchet wheel 52 fixed on a shaft 45 carrying the sheet feeding gears 43, 44 thus effecting the locking of the sheet feed ; the slipping clutch permits continued movement of the handle 29. The entry is now typed in the required line and a linespacing key is operated causing a depression of link 88, Fig. 6, rotation of lever 86 and clockwise movement of a rod 81 engaging a stirrup 79 carrying the knife blade 80 producing a rectangular or circular slit 67 in the sheet one linespace below the original slot M so that when the sheet is next inserted in the machine for a subsequent entry the new marking 67 arrests the feding movement. The amount of line-space is adjustable by the eccentric mounting 77, 78 of the lever 57 and a stop 73 engages the control 29 causes the cam 34, Fig. 9, to re-engage with the lever 57 and a stop 73 engages the control element 72 to release the locking pawls 54.