Patent GB-444885-A (GB)
Title: Improvements in or relating to manifolding attachment for writing machines
IPC: B41J17/00
Filed: 1934-08-29
Abstract: 444,885. Typewriters &c. SHERMAN, J. Q., Rural Route No. 1, Philadelphia Drive, and METZNER, A. W., 1022, Arbor Avenue, both in Dayton, Ohio, U.S.A. Aug. 29, 1934, No. 24889. Convention date, Aug. 29, 1933. [Class 100 (iv)] Carbon-sheet arrangements.-In a writing- machine superposed record-strips and interleaved transfer material are fed in unison in a circumferential path around a cylindrical member, and means are provided for gripping and holding the record strips independently of the transfer material, relieving the tension on the record strips extending circumferentially round the cylindrical member, and retracting the transfer material between the record strips. The manifolding-attachment shown in the Figure comprises a frame 11 and a papersupply carrier 3, mounted on a ball-race behind a typewriter and connected to the carriage by arms 8. The frame is supported in an inclined position by struts 16. The carbon sheets 25 are secured by hinged U-shaped members to blades 24 supported on hooks 22 on a carrier-plate 20, which is carried by sprocket-chains 19 passing over wheels 18 at the top and bottom of the frame. The wheels 18 are braked by a spring-finger 166. The paper strips pass from the carrier between guide-fingers 30, and are interleaved with the carbon sheets. The edges of the strips may be perforated to engage with feed-pins on the platen-roller. The edges of.the paper strips projecting beyond the carbon sheets can be gripped by fingers 43, provided with paperguides 62 and co-operating with roughened portions 46 of a plate 13 mounted on the frame. The fingers 43 are rocked by cam-levers 47 actuated by toggle-mechanism 49, 58 under the control, through linkage 56, 55, 54, 53, of a sliding rod 50. Mounted on the rod 50 are stops 52 which are adapted to be engaged by the carbon-carrier 20 at each end of its travel. While the forms are being typed the paper strips are gripped to the carbon-carrier 20 by eccentric clamps 34 on spindles 31, 32. The spindle 31 can be rotated by a handle 35 and carries a pin co-acting with a slot in a disc 33 on the spindle 32, so that the spindles will turn together and clamp or release the webs. When one form has been completed, the carrier-plate 20 slides the rod 50 and clamps the paper strips, and the platen is then given a small reverse rotation to release the tension of the strips. By pressing upwards on the handle 35, the strips are first released from the plate 20, and the latter is then carried upwards until the transfer sheets are aligned with the next set of forms. At the conclusion of this movement the plate 20 releases the clamps 43. In a modification, the sprocketchains are omitted and the plate 20 carries pinions engaging longitudinal perforated racks on the frame 11, a spring-finger being provided to brake the rotation of the pinion-axle. Alternatively, the shaft may be braked by a disc-brake, in which an element coupled to the shaft is pressed against one coupled to the plate 20 by means of a spring. The clamps 34 may be replaced by spring-mounted pins engaging holes in the paper strips, and which are retracted by rock-arms actuated by the handle 35. For detachable mounting, the frame 11 may be adapted to engage studs on the typewriter carriage and be provided with locking-hooks to engage over the studs.