| 摘要 |
An attachment for installation upon a typewriter for applying musical notations to a sheet material and comprising a frame pivotally mounted on the typewriter body, the frame including a bridging member at one end of the frame adjacent the platen of the typewriter and a secondary keyboard at the opposite end of the frame. The bridging member carries rotatable, axially parallel cylindrical members spaced along the length thereof and oriented generally vertically to engage plural rollers oriented axially parallel to the platen and engaged thereagainst. The secondary keyboard carries individual keys, each having depending stems selectively engageable with a spring biased lever when a selected one of said keys is depressed. The keys each represent an imprinting location on a musical staff for application of the musical characters controlled by the principal keyboard of the typewriter. Depression of a selected one of the secondary keys causes movement of the spring biased lever to pivot the frame a given degree, raising the cylinders a predetermined height and thus causing rotation of the rollers whereby to rotate the platen (and the sheet guided thereby) incrementally to place the imprinting location for reception of a musical character imprint at such location relative a musical staff as required by the operator.
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