Abstract A tabulator safety apparatus for use with typewriters, calculating machines, accounting machines or the like having a movable motor operated carriage, to prevent the movable carriage from being halted when the tabulator set key is depressed during carriage travel or when the tabulator key is depressed during the return travel of the carriage including a holder having at least one tabulation stop member disposed therein or coacting with a tabulator stop in stopping position, said holder being movable against a spring in a carriage return direction, said stop member being movable between an position and a nonoperative position, a link mechanism cooperating with said holder and transferring said holder movement to said stop member whereby said holder movement in said carriage return direction moves said stop member to said nonoperative position, and a swinging arc having a setting stud for said tabulator stops for engaging said tabulator stops, said stud being laterally moveable against the action of at least one return spring and cooperating with recesses and guide pins to transform the lateral movement of said tabulator stop into a movement disengaging said stud from said tabulator stop.
Inventors
👤 Ivar Holtklint
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-27 17:23
CPC Classifications
B; B41; B41J; B41J21/00; B41J21/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
In a tabulator apparatus for use with typewriters and the like having a movable motor operable carriage for preventing the movable carriage from being stopped when a tabulator setting key is depressed during carriage travel or by activation of a tabulator key during carriage return travel, the improvement comprising a holder biased against a spring to move in carriage return direction, said holder having at least one tabulation stop member disposed therein for engagement with a tabulator stop in stopped position, said stop member being movable between an operative position and a nonoperative position, a link mechanism cooperating with said holder and transferring said holder movemeNt to said stop member whereby said holder movement in said carriage return direction moves said stop member to said nonoperative position, said setting key of said tabulator actuating a swinging arm having a setting stud for said tabulator stops, said stud having a heart-shaped aperture disposed therein and being laterally movable against the action of at least one return spring and cooperating with recesses and guide pins for transforming said lateral movement of said tabulator stop into a movement disengaging said stud from said tabulator stop.
Claim 2
Dependent Claim
192 words
In a tabulator apparatus for use with typewriters and the like having a movable motor operable carriage for preventing the movable carriage from being stopped when a tabulator setting key is depressed during carriage travel or by activation of a tabulator key during carriage return travel, the improvement comprising a holder biased against a spring to move in carriage return direction, said holder having at least one tabulation stop member disposed therein for engagement with a tabulator stop in stopped position, said stop member being movable between an operative position and a nonoperative position, a link mechanism cooperating with said holder and transferring said holder movemeNt to said stop member whereby said holder movement in said carriage return direction moves said stop member to said nonoperative position, said setting key of said tabulator actuating a swinging arm having a setting stud for said tabulator stops, said stud having a heart-shaped aperture disposed therein and being laterally movable against the action of at least one return spring and cooperating with recesses and guide pins for transforming said lateral movement of said tabulator stop into a movement disengaging said stud from said tabulator stop.