Patent GB-747233-A (GB)
Title: Control apparatus for type line casting and composing machines
IPC: B41B27/10
Filed: 1954-05-06
Abstract: 747,233. Type-bar-making machines. TELETYPESETTER CORPORATION. May 6, 1954 [July 9, 1953], No. 13287/54. Class 100 (3). Driving-mechanism.-Apparatus for controlling the operation of a type line casting and composing machine from a tape containing code perforations comprises a control unit of the general construction described in Specification 415,798, and the permutation code setting is transferred from the selector bars to the code bars by means of an additional transfer mechanism which is separately actuated under the control of the record reader device after the latter has actuated the normal transfer mechanism. In this way, the succeeding operating cycle of the record reader device can be started while the operation of the machine is being controlled in accordance with the code signals sensed during the preceding cycle. The normal, now to be regarded as intermediate, selector bars 115, Fig. 10, are provided with abutments 113, 114 and when a cam 51 on a transfer camshaft 50 acts on a cam roller 108, transfer levers 102 move downwards, and the settings of the bars 115 are transferred through links 101 to the code bars 77. The clutch of the shaft 50 is controlled by an electromagnet 315, Fig. 15, while the clutch of the elevator cam-shaft 48 is controlled in response to an " elevator raise '' signal as described in Specification 415,798, and that of the record reader shaft 45 by a magnet 311. In the normal operation of the machine, a cam on the shaft 45 closes a contact 313 near the end of the record reader cycle to energize the magnet 315. The shaft 45 also drives a timing delay cam-shaft 309 for inserting a timo delay into the cycle when certain signals are received. Six code bars 77 are set normally, and a seventh is set one way or the other when a " shift " or " unshift signal is received, as described in Specification 415,798. A special selector bar operates the duplex rail shift mechanism, also as described in Specification 415,798. When the second of two identical signals is received, the lever 274 is rocked as described in Specification 415,798, and closes contacts 275, 276, energizing the magnet 311, to stop the shaft 45, and a relay 317, which establishes holding circuits for itself and the magnet 311 and breaks the circuit to the magnet 315. A magnet 305 is also energized, and causes a section of the cam assembly, which is normally restrained from rotation, to rotate, said cam assembly being frictionally mounted on the shaft 109. Cam 358 then opens a contact 345 in the said holding circuits, and cam 354 closes a contact 355 to energize the magnet 315 and rotate the shaft 48, after the requisite time delay. When a contact 323 is closed, the magnet 311 and relay 317 are energized in the same way. When a duplex rail shift signal is received, for a shift to either rail, bail members 320 co-operating with depending toothed portions 319 of the bars 115 close contacts 321 and 323, whereupon a magnet 352 is energized to allow to rotate a second cam assembly on the shaft 309, cams 361, 359 then acting in the same way as the cams 358, 354 after the desired time delay. When an " add fixed space " signal is received, contacts 322 and 323 are closed, and a magnet 353 is energized to allow to rotate a third cam assembly, cams 373, 372 acting in a similar way to the cams 358, 354. The cam 372 has two projections 374, 375. The first projection 374 causes a space-band to be released. The second projection 375 acts at the same time as a third cam 378 moves a codechanging bar 379, so that a thin-space matrix is released. The " add fixed space " signal also acts through the requisite bail member 320, Fig. 18, to unlatch from each other two levers 392, 393 and the latter lever moves to a position which allows the said bail member 320 to close the contact 322 on receipt of a normal space signal, so that the thin-space matrix is added to every spacer inserted in a line after the receipt of one " add fixed space " signal. At the end of the line, the mechanism is reset by a bar 413 actuated by a cam 412<SP>1</SP> on the -shaft 48 on receipt of the " elevator-raise " signal. Various safety devices on the machine close contacts such as 426 to arrest the operation of the control unit. The contacts 324-328 are closed, together with the contact 323, to operate functions such as quadding, centring and magazine selection.