| 摘要 |
A device for controlling a type-carrying element in a single unit for typewriters or like machines comprises a stepped cam to execute the hammering action of the type-carrying element with an intensity independent from external factors and manually adjustable for all the characters of the type carrying element, and also, in addition, automatically for some characters of the type-carrying element, particularly for those having a smaller printing area, the stepped cam being provided to effect the hammering action by inertia following the action of a spring suitable to transmit a given initial thrust. |
