Spring-returned power driven ribbon

Claim 1

In a business machine having cyclically operable print members and including a printing rIbbon reversibly transferrable between first and second spools, the improvement comprising: a. a single reverse-winding indicator affixed to said ribbon, b. a power driven shaft. c. a further shaft coupled to said second spool, d. a clutch slidably coupled to said driven shaft and engageable with said further shaft to thereby wind the ribbon on said second spool, e. a switch cooperating with said clutch, said switch being movable to a first position wherein said clutch is engaged with the further shaft and movable to a second position wherein the clutch is disengaged from the further shaft, f. means operable to move the switch to said second position in response to sensing said reverse-winding indicator, g. stored energy means operable to rewind the ribbon onto said first spool when the clutch is disengaged from the further shaft, and h. means for effecting movement of the switch from said second to said first position in response to said print member cycle of operation.