Feed index device in universal parallel ruler or the like

Details Feed index device in universal parallel ruler or the like Feed index device in universal parallel ruler or the like

1976-02-05

1977-09-20

Phillips, Charles E.

Geometrical instruments

Scriber

Curved line

B43L 1324

Patent

active

040487253

ABSTRACT:
A feed indexing device for a draftsman's straight-edge includes a control member that can be selectively linked to a straight-edge carriage plate. When the control member is linked to the carriage plate, it is rotated proportionately to carriage plate movement. An indexing mechanism is included for allowing the control member to only rotate a preset distance for each resetting thereof. A brake mechanism is included for braking further movements of the carriage plate during resetting of the control member.

REFERENCES:
patent: 534099 (1895-02-01), English
patent: 2106070 (1938-01-01), Spitz
patent: 3025604 (1962-03-01), Shelly
patent: 3077668 (1963-02-01), Carter
patent: 3762055 (1973-10-01), Citrin
patent: 3925900 (1975-12-01), Raffensparger

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