公开(公告)号：DE1282703B

公开(公告)日：1968-11-14

申请号：DEJ0030724

申请日：1966-03-30

Applicant: IBM

Inventor： LARSON HAROLD ALBERT ,  SCHULZ FREDERICK ARTHUR ,  THOMPSON LOENARD HOWARD ,  WELLS JACK FREDERICK

IPC: B65H23/18 ,  G11B15/28 ,  G11B15/43 ,  G11B15/56 ,  G11B15/60

Abstract: 1,093,500. Recording and playback. INTERNATIONAL BUSINESS MACHINES CORPORATION. April 4, 1966 [May 3, 1965], No. 14758/66. Heading G5R. Web transport mechanism for use in a magnetic tape recorder incorporates pairs of pivoted arms e.g. 23, 40 each interconnected by springs e.g. 62. The arms control the positions of idler and pinch rollers and capstans in the tape path. In a first position shown in Fig. 1 the interconnected arms are held in a locked stable position by the spring, to define a tape path clear of drive capstans and play record heads so as to enable the tape to be easily threaded. When the tape has been threaded, a light push on the arms 23, 16 sets the arms in a second stable position where they are forced apart by the spring. The arrangement of the arm 40 is such that the drive capstan 49 engages the tape and the tape engages the heads 63 (Fig. 2, not shown) in this second position. Although in the embodiment shown the system is symmetrical at the two sides of the heads, simplified arrangements may be adopted at the non-driven side (Figs. 5 and 6, not shown).