(under subclass 60) Subject matter comprising a typewriter combined with a calculator, wherein the two units are each of substantially standard construction and are capable of separation and independent use.
(1) Note. These machines are generally characterized by the presence of separate and complete keyboards for each unit and the provision of locking and interlocking devices controlling the operation of the two units and/or interconnections between the typewriter keys and calculator keys, or differential actuators, to eliminate duplication in indexing amounts. This subclass receives a combined machine of the type defined even though it may have a platen common to the typewriting mechanism and to separate printing mechanism in the calculator.
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59, for typewriter calculating machines, wherein digital entries are effected in a totalizer by or with the operation of numeral keys of the typewriter.
60.38+, for typewriter calculating machines, wherein the typewriter keys control typing in the usual fashion, but digital values are set up in indexing mechanism under control of the typewriter numeral keys and are entered concurrently in a plurality of orders of the totalizing mechanism after the completion of a multi-digit typing operation.
