Patent GB-1463018-A (GB)
Title: Recording and/or reproducing apparatus
IPC: G11B33/02
Filed: 1974-11-06
Abstract: 1463018 Cassette recorders SONY CORP 6 Nov 1974 [8 Nov 1973] 48082/74 Heading G5R In a recording and/or playback apparatus for use with a record medium contained in a cassette 16, a holder 31 receives the cassette and is movable therewith between a cassette-receiving and discharging position, Fig. 2, and an operative position, Fig. 3 (not shown), of the cassette, holder 31 being pivotally mounted on a chassis 12 by two mounting assemblies each at a respective one of two opposite sides of holder 31, each said assembly having a lever 44, pivoted at one end to chassis 12 and at the other end to holder 31, and a lever 45 shorter than lever 44 and pivoted at three spaced apart locations 59, 60 and 56 and 57, 58 to chassis 12, lever 44 and to holder 31 respectively, levers 45 pivoting in response to pivoting of levers 44 and being effective to establish the orientation of holder 31 relative to chassis 12 during such pivoting, and levers 44 swinging in respective planes perpendicular to chassis 12 and being parallel to and inclined to the chassis in the operative position and the receiving and discharging position respectively. When a twin-reel magnetic tape cassette 16 is in the operative position in a helical scan video recorder of the type disclosed in Specification 1,441,292, reel drive members 23, (24), Figs. 4, 5 (not shown), engage the tape reels, locating posts 21 engage the underside of the cassette with a pin 22 on at least one post 21 in a socket of the cassette, and tape engaging pins 28, (29), Fig. 6 (not shown), and a pinch roller 27 of a rotary ring-type tape-loading and unloading device 25 engage through a bottom opening (19) of the cassette. The cassette is received in the holder 31 between a base 33, side walls 34A (34B), and top bearing member 36A, (36B), Fig. 1 (not shown), thereof, tabs 37 engaging the cassette to limit insertion thereof into the holder, during which insertion a pin 43 releases a latch in the cassette so that a member 61 can engage and open a cover (20) of the cassette during movement of the cassette and holder to the operative position to expose the rear side of the cassette for tape unloading therefrom. During lowering of the holder 31, two pivoted arms 63 of locking assemblies 62A, (62B), Figs. 4 to 6, are moved under the bias of a spring (71) so that rollers 67 ride on ramps 72 of members 36A, (36B) to bear down thereon and retain the cassette and holder in the operative position in which levers 44, 45 are horizontal. In the receiving and discharging position, to which levers 44 are urged by springs 53, rollers 67 engage with spacing members 73 on arms 44 to stabilize the position of holder, tilting slightly downwardly from the entrance thereof for cassette insertion in direction A. A control device permits tape unloading by device 25 only when holder 31 is in the operative position with rollers 67 in their locking positions, and prevents outward swinging of arms 63 for unlocking as long as the rotary ring 26 of device 25 is displaced from its inoperative position, the control also being operable to move arms 63 outwards when an eject mechanism is actuated subsequent to completion of tape unloading from the apparatus by device 25.