Carriage return and line space mechanism

Claim 1

In a business machine having a paper platen line indexable by the initial winding of a drawband by a power driven reel and a carriage returnable to a left margin position by additional continued winding of the drawband by the power driven reel, the improvement comprising: a carriage return key depressible to initiate the line indexing and carriage return functions of the business machine, an oscillatable mechanism operable in response to the depression of said carriage return key for undergoing repeated cyclical movements with the carriage at any position along a line of type, clutch control means connected in power controlling relation with said power driven reel for controlling the winding of said drawband by said powered reel to effect the line indexing and carriage return functions of the business machine at any position of the carriage along a line of type, said clutch control means being operable in response to the cyclical movement of said oscillatable mechanism at any position of the carriage along a line of type including positions removed from the left margin for imparting cyclically repeated initial winding movements to said drawband by said power driven reel to effect repeated line indexing of the paper platen without the continued additional winding necessary for returning the carriage to the left margin position, said carriage return key being depressible to a first position for initiating both line indexing and carriage return functions and being further depressible to a second position for initiating only the line indexing function at any position of the carriage along a line of type, carriage return latch means normally operable in response to the depression of said carriage return key to the first position for maintaining said clutch control means in the operated condition for imparting continued additional winding movement to said drawband to effect return of the carriage to the left margin position, and carriage return disable means operable in response to the further depression of said carriage return key to the second position for disabling said carriage return latch means to enable the operation of said clutch control means to effect repeated initial winding of said drawband by said power driven reel for causing repeated line indexing of the paper platen.