G - Physics – 11 – B
Patent
G - Physics
11
B
352/24.25
G11B 5/00 (2006.01) G11B 15/093 (2006.01) G11B 15/10 (2006.01) G11B 15/18 (2006.01)
Patent
CA 1247734
18 ABSTRACT: The invention relates to a switching mechanism for the deck of a magnetic-tape apparatus comprising a head-mounting plate (74) which can be moved forwards and backwards relative to the magnetic tape to be scanned, which plate is latched in the forward position in the play mode and, when unlatched, can be moved back under spring force to a standby position in which the cassette remains inside the deck. The standby position can be reached when the end of the tape is reached or when an actuating rod (62) is depressed. The actuating rod (62) comprises a guide slot (61) which effects unlatching of the head- mounting plate (74) and a switching surface (102) for the actuation of a drive switch (104) of the deck. The head- mounting plate (74) carries a pivotal actuating member (89) which, when in its centre position during the return of the head-mounting plate (74) to the standby position can open the switch (104) and in a first pivotal position does not influence the drive switch (104). The actuating member (89) comprises a switching surface (107) by means of which the drive switch (104) is opened when the head- mounting plate (74) returns to the standby position and the actuating member (89) is in its centre position. By means of a stop (95) on the actuating rod (62) the member (89) is moved to the first pivotal position if the ac- tuating rod (62) is moved in a specific direction after re-depression. After this re-depression the switch (104) is closed during the return movement of the rod (62) in the opposite direction, a servo mechanism (64, 51, 52, 71) of the deck moving the head plate from the standby position to the play position.
472276
Deutsch Armin
Ruyten Henricus M.
Fetherstonhaugh & Co.
Koninklijke Philips Electronics N.v.
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