Patent GB-262056-A (GB)
Title: Recording and reproducing apparatus adapted for use with any suitable separate typewriter
IPC: B41J3/50
Filed: 1926-10-04
Abstract: 262,056. Schulz, F., and Fuchs, A. Nov. 28, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Strip-controlled driving-mechanism; keyboard operators.-In apparatus for recording and reproducing typewritten matter, an ordinary typewriter is arranged to close contacts controlling a strip perforator or like recording-apparatus, the perforated strip or record being subsequently employed for actuating the keys of the typewriter to reproduce the matter. In the apparatus shown in Figs. 1 and 2, the typewriter 1 is supported on the casing of a recording-device 21 comprising a strip perforator 19, and when the. matter is to be reproduced a reproducing-device 3, adapted to actuate the typewriter keys under control of the perforated strip, is mounted on the recording- device. The recording-device is provided with contacts 8 operated by the key-levers 7 and controlling the strip perforator, the strip 20 passing from a roller 21 and being led through the perforator to feed-rollers 28 and thence to a winding- roller 46. The shafts of the rollers are provided with friction clutches 25 geared to a shaft 29 and controlled by levers 32 operated by electromagnets 31. A motor 42 drives a shaft 47 which can be coupled by a friction clutch 39 to a shaft 36 geared to the shaft 29. The friction clutch 39 is controlled by a lever 45 which is rocked by an electromagnet 44 to couple the shafts 41, 36. On operating the typewriter keys, corresponding perforations are made in the strip, and at each operation the strip is fed by means of the feedrollers 28 and winding-roller 46, the friction clutches associated with these rollers and also the friction clutch 39 being automatically thrown in by means of the associated electromagnets. The strip is provided also with perforations representing the beginning and end of a passage and the ends of the lines, these perforations being made by depressing keys provided on the recording-device. The key for making the perforation indicating the end of a passage may be arranged to throw in, through the associated electromagnet, the friction clutch of the roller 21 and thereby cause the strip to be re-wound thereon. The reproducing-device comprises a rotary drum 59 having ribs 60 for actuating levers 61 engaging strikers 69 for the keys. The levers 61 are slidable in trunnioned collars 67 and engage levers 64 connected to the armatures of electromagnets 62 in circuit through plug connectors 47 with contacts controlled by the perforations in the strip. During reproduction, the strip is wound intermittently by the roller 46. When any electromagnet 62 is energized, the associated lever 61 is drawn forward and a projector 68 thereon is engaged by one of the ribs on the drum, the lever being thereby rocked to actuate the corresponding key-lever. When the circuit of the electromagnet is broken, the lever and striker 69 are returned by springs. The drum is geared to a shaft 48 connected by gearing and a coupling 52 to a shaft 53 mounted in the recording-device and adapted to be coupled to the driving-shaft 41 by a friction clutch 55 which is thrown on or off by means of electromagnets 57, 56. When the matter has been reproduced, the perforation at the end causes the strip to wind back on to the roller 21, and the perforation at the beginning then causes the strip again to wind on to the roller 46. During the winding of the strip on the roller 21, the contacts controlled by the perforations are cut out and the electromagnet 56 throws out the clutch 55 and thereby arrests the drum 59. Carriage-returning and line-spacing mechanisms.-The carriage and the line-spacing lever are connected to cords wound on drums 43, 76 adapted to be coupled to the shaft 41 by means of the friction clutches 39, 74 operated by electromagnets 73, 75 controlled by perforations in the strip 20. Multiple line-spacing is effected by repeated operations of the electromagnet 75, the drum 76 having a spring connection for permitting return of the line-spacing lever. When the carriage has been returned a device, such as a travelling nut operated by the drum 43, breaks the circuits of the electromagnets 44, 75 and closes the circuits of the electromagnets controlling the feed of the perforated strip.