US PATENT SUBCLASS 400 / 383
TYPE-BAR-ACTION MECHANISM OR TYPE-FACE ON TYPE-BAR OR TYPE-FACE INKER

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

383TYPE-BAR-ACTION MECHANISM OR TYPE-FACE ON TYPE-BAR OR TYPE-FACE INKER {19}
384  DF  .~> Spring drive for type-bar action
385  DF  .~> With added-motion mechanism for type-bar near print-point {4}
390  DF  .~> With end-thrust mechanism for type-bar {3}
394  DF  .~> With type-bar pivot traveling during typing movement of type-bar {2}
397  DF  .~> With disconnection of type-bar action during movement thereof
398  DF  .~> With accelerated (e.g., motion amplifying)type-bar action {9}
408  DF  .~> For bottom-strike typewriter {6}
415  DF  .~> For top-strike typewriter {6}
422  DF  .~> Type-bar action {12}
435  DF  .~> Type-bar rebound preventer (e.g., via latch, brake, linkage, etc.)
436  DF  .~> Type-bar return spring connected to type-bar-action linkage {4}
441  DF  .~> Type-bar pivot support {10}
452  DF  .~> Type-bar structure {1}
454  DF  .~> Type-bar rest or rest support {1}
456  DF  .~> Type-bar or type-member guide structure {5}
462  DF  .~> Type-member structure {4}
467  DF  .~> Dust guard for type-bar action mechanism {1}
469  DF  .~> Attachment to type-bar for imprinting extra character
470  DF  .~> Ink-impregnated type-face or inker for type-face {1}

DEFINITION

Classification: 400/383

TYPE-BAR-ACTION MECHANISM OR TYPE-FACE ON TYPE-BAR OR TYPE-FACE INKER:

(under the class definition) Subject matter wherein significance is attributed to (a) means for effecting movement of a type-bar* member from its rest (i.e., normal or base) position to its print-point* (i.e., type-face* impacting) position or to the close vicinity of the print-point position, or (b) means for returning a type-bar from its print-point position to its rest position, or (c) structure for enabling such movement or for supporting a type-bar during such movement, or (d) a type-face mounted on or supported by a type-bar, or (e) means for applying ink* to a type-face before the type face is impacted against the record-medium*, or (f) structure that is used in conjunction with a type-bar.

(1) Note. Although it is apparent that the movement of a type-bar is ordinarily initiated by the pressing of a key* element by a typist, none of the key, or key-board* or key-lever mechanisms is included in the structure of this or indented subclasses. For such key structure, see subclass 472.

(2) Note. This subclass is for a rear-strike typewriter

wherein significance is attributed to a typewriter in which the type-member* elements impact against the platen* (and thereby impact against a record-medium that is backed by the platen) at a print-point* located adjacent to a rearmost part of the platen. This subclass is also for a front-strike typewriter having structure not provided for in the following subclasses wherein significance is attributed to a typewriter in which the type-member elements impact against the platen (and thereby impact against a record-medium that is backed by the platen) at a print-point located adjacent to a foremost part of the platen.