公开(公告)号：DE1524793B1

公开(公告)日：1970-07-23

申请号：DE1524793

申请日：1967-06-10

Applicant: IBM

Inventor： ORLANDO ANTHONY WILLIAM ,  JACOBSEN RONALD RICHARD ,  NUTTER STANWOOD WALLACE ,  POPP GEORGE

IPC: G11B15/58 ,  G11B15/66 ,  G11B15/67 ,  G11B23/027 ,  G11B23/107 ,  G11B23/02

Abstract: 1,138,573. Tape reel cover. INTERNATIONAL BUSINESS MACHINES CORP. 8 Aug., 1967 [8 Sept., 1966], No. 36323/67. Heading A4G. A cover for a reel of magnetic tape has side flanges covering the flanges of the reel, and the cover comprises two channel shaped bands 10 and 16 joined along their length leaving a tunnel between them and containing rubber seals 46 to contact the reel flanges. One side wall 14 of the cover may have fingers 15 for holding documents. A toggle latch can be closed to draw the cover tightly round the reel for storage. In use, the reel and cover are held on a machine in restrainers 48 and 50, with key 53 ensuring correct alignment. The latch 22, 24, 28 is opened either by hand or automatically with opening 25, so that the cover expands into grooves 58 in the restrainers, the end B to 20 of the outer band that is not attached to the inner band moving circumferentially apart from the end A to extend the length of the outer band by a length AB. As the toggle opens, the slide block 32 slides from one end of the window 36 in the outer band to the other, carrying with it the door 38 that extends about a quarter of the way round the circumference between the inner and outer bands. The door 38 slides in a clockwise direction, opening gaps 14 and 44 in the inner and outer bands to form an exit through the cover for the tape end, and aligning the gap 56 in the sliding door with the gap 54 in the tape already aligned with air inlet 52 in the restrainer 50, so that compressed air flows along the channel between the inner and outer bands until it reaches tangentially angled air jet holes 55 and 57. The holes 55 are directed in a clockwise direction, so that air flows clockwise round the reel, urging the end of the tape towards exit 14, 44 where the tape meets air from the holes 57 flowing counter-clockwise to peel off the end of the tape and urge it through the exit.