Tape cassette for metering correction tape feed
AssigneeSmith Corona Corporation
InventorHans W. Mueller
Life of this patent
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Abstract
A tape cassette has a sensing arm pivotally mounted therein biased against a correction tape on a take-up spool for sensing the amount of correction tape thereon. A correction tape feed mechanism mounted in a typewriter has a metering post for engaging the sensing arm at varying locations to cause the correction tape feed mechanism to feed the correction tape at substantially equal amounts regardless of the amount of correction tape on the take-up spool.
Claims15
A tape cassette for removable mounting in a typewriter, the typewriter having a tape feed mechanism including a movable metering post, the tape cassette having a supply spool carrying a supply of tape and having a take-up spool for receiving tape from the supply spool, the tape cassette comprising a sensing member corresponding to a particular type of correction tape mounted therein for sensing the amount of tape on said take-up spool and being engaged by the movable metering post for determining the amount of the particular type of correction tape to be fed by the tape feed mechanism.
A tape cassette for removable mounting in a typewriter, the typewriter having a tape feed mechanism including a movable metering post, the tape cassette comprising:
- a housing having a opening;
- a supply spool located in said housing and carrying a supply of tape;
- a take-up spool for receiving the tape from the supply spool;
- a sensing arm mounted in said housing for biased pivotal movement against the tape disposed upon said take-up spool, and having an angled edge surface, said opening of said cassette housing located to provide access of said metering post to said edge surface, said angled edge of said arm being configured to continually decrease the amount of rotation of said take-up spool by the decrease in movement of the tape feed mechanism as the amount of tape increases on said take-up spool for feeding substantially equal amounts of tape regardless of the amount of tape on said take-up spool.
A combination typewriter and correction tape cassette comprising:
- a typewriter having a correction tape feed metering assembly including a metering post connected to a tape feed actuator for reciprocating movement;
- a correction tape cassette including a housing, a tape supply spool disposed within said housing and carrying a supply of correction tape, a tape take-up spool disposed within said housing for receiving tape from said supply spool, said housing having an opening closely adjacent said take-up spool;
- said cassette further including a sensing member corresponding to a particular type of correction tape mounted therein for sensing the amount of tape on said take-up spool, said member being biased against said take-up spool, said sensing member being engaged by said metering post through said opening for regulating said tape feed metering assembly.
Dependencies are inferred from the claim text.