Patent GB-1505547-A (GB)
Title: Magnetic recording apparatus with a plurality of radio signal receiving devices
IPC: G11B31/00
Filed: 1975-08-28
Abstract: 1505547 Radio and magnetic recording apparatus SONY CORP 28 Aug 1975 [29 Aug 1974 (2)] 35563/75 Heading H3Q In apparatus including first and second receivers 201 and 203, Fig. 12, receiving signals on first and second bands such as TV and FM and producing therefrom first and second audio signals, first and second selector switches 182, 184 enable either of the first or second bands to be selectively connected to a magnetic recording apparatus 214 and a monitoring apparatus 24 and a mechanical interlock 55-58, 105-108 prevents either one or other of the audio signals from being connected to the monitoring apparatus while the other or one of the audio signals is connected to the recording apparatus. To record on the AM band a band selector cam 40 (Fig. 2) is rotated by a band selector knob 29, Fig. 3, to the AM position as indicated by a coloured plate 89 as seen within a window 50 of an indicating member 46 which is coupled to a detent lever 38 positioning the cam 40 by engagement of a roller 39 in a cam surface 36. An idler cam 43 which carries the coloured plate 39 is coupled to rotate with the cam 40 by pins 105, 108 engaged by a spring 112-114. A clutch operating lever 137 is moved to the left so as to couple a tuning knob (22, Figs. 1, 9 and 10, not shown) via a clutch (140) formed by gears (147 and 152) to drive the AM tuner and a dial cord attached to (161) to actuate a pointer (27) so that the required station can be adjusted. With the radio switched on by (20) a plate 75, Fig. 2 coupled to the radio on/off switch (20) moves a swing plate 69 to the full line position shown in Fig. 2. Pressing a record button (15) causes via levers 71,69, 64 and 56 a pin 55 to engage between projections 57 and 58 on the idler cam 43 and lock that cam so that the waveband selected for recording is maintained whilst recording. The radio which is at present monitoring from speaker 24, Fig. 12, the station being recorded can be switched to monitor the TV or FM band by rotation of the band selector knob 29. This rotates band selector cam 40 as allowed by the spring 112, pin and slot coupling 105-108 (see Fig. 8A, not shown) without moving the idler cam 43 which determines the waveband selected for recording remains the same. If the FM band is selected then the clutch operating lever 137 is moved to the right so that the clutch (140) couples the tuning knob (22) via gears (147 and 153) to drive the FM tuner and actuate the FM pointer (26) by means of (162). The band selector knob (29) selects the required TV, AM or FM tuner 201-203. The TV channel is selected by a channel selector (28) and is displayed at (30). When the FM or TV band is being recorded the pins 105, 108 and the slots 106, 107 only allow the band selector 40 to be rotated by the band knob (29) to monitor the AM band position (Figs. 8B and 8C, not shown) as an alternative to the band being recorded. The monitor band change over switches 181 and 182, Fig. 12 are interlocked with a switch 131 in Figs. 2 and 3 and the recording band changeover switches 183 and 184 are interlocked with a switch 101, Figs. 2 (and 6, not shown). The cassette recorder (7, Fig. 1, not shown) includes a recording/playback transducer 214 and switches 204 and 205 are coupled to the radio on/off switch (20) to enable recording from a microphone 5 and replay via the speaker 24.