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889,892. Time recording systems. DICTAPHONE CORPORATION. March 18, 1959 [March 25, 1958], No. 9426/59. Class 40 (2). An apparatus, particularly for use with centralized dictation systems, is arranged to provide a sound signal, particularly a time recording signal, whenever a telephone handset, conne...

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Bibliographische Detailangaben
Hauptverfasser:	WILLIAM ROBERTS,FREDERICK, WILLIAM SCHUELER,FREDERICK, RICHARD MONTGOMERY,JOHN
Format:	Patent
Sprache:	ger
Schlagworte:	BLASTING BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROMECHANICAL CLOCKS OR WATCHES ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOROLOGY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER LIGHTING MECHANICAL ENGINEERING PHYSICS TELEPHONIC COMMUNICATION THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	889,892. Time recording systems. DICTAPHONE CORPORATION. March 18, 1959 [March 25, 1958], No. 9426/59. Class 40 (2). An apparatus, particularly for use with centralized dictation systems, is arranged to provide a sound signal, particularly a time recording signal, whenever a telephone handset, connected to the system is lifted. As shown, a perforated 16 mm. magnetic sound film 26 with two tracks, is fed at one-minute intervals between the spools 22, 24 in amounts determined by the metering sprocket 28. The stationary loop resting around the drum 30 is scanned by one or other of the heads 32, which make one complete revolution for each time signal required. Each track of the film contains signals for 12 hours, and automatic reversing of the spool drive and changeover of operation of the heads is effected by mechanism connected to one or other of the members 54, 56. The control of drive and function is by a relay network (Fig. 18, not shown).