Inventors:
Robert F. Pfost - Los Altos CA
William E. Seaman - Woodside CA
Chester W. Newell - San Jose CA
Assignee:
Newell Research Corporation - Saratoga CA
International Classification:
H04M 164
Abstract:
A dual magnetic tape cartridge includes a first reel-to-reel tape wound between two coplaner hubs. A tape loop, extending between the hubs, is guided along a first path and across a tape head access opening. The second tape, in belt form, is guided along a second path and across the tape head access opening at a different level. A drive belt, frictionally engaging first tape peripheries on the hubs, is entrained over portions of a forward drive roller and over portions of two spaced rear idlers. The second tape is entrained over slightly smaller diameter portions of the drive roller and over other portions of the rear idlers to thereby also function as a tensioning belt for the drive belt, causing greater tension in drive belt portions engaging the first tape on the hub acting as the takeup hub than in other belt portions engaging tape on the other hub. Both tapes are mechanically interconnected and are always driven simultaneously since the second tape and drive belt are entrained over common elements and the drive belt drives the first tape. For extended length and recording time the second tape is festooned around a number of other tape guides, additionally, the tapes are mounted so that both are always driven across the tape head access opening in opposite directions.
