Geometrical instruments – Area integrators – Electrical
Patent
1983-01-13
1984-04-03
Little, Willis
Geometrical instruments
Area integrators
Electrical
33138, G01B 312, B43L 904
Patent
active
044399278
ABSTRACT:
A tape measuring device including an outer casing and a coiled metal tape disposed within the casing which may be retracted or withdrawn through a slot in the front of the casing. In addition, a consumable marker and a scriber are disposed within the casing immediately forward of and along side of the slot through which the coiled tape is withdrawn. Either the consumable marker or the scriber may be positioned via manual actuating means to mark an object being measured at a preselected point along the length of the extended tape. Braking means are disposed within the casing which, when actuated, engage the tape and lock it into position relative to the casing. The braking mechanism is automatically activated when either the consumable marker or the scriber is positioned for marking the object being measured. In addition, the braking means may be activated without marking or engraving the object being measured. A plurality of feed segments disposed within the casing operate to insure that the marker continues to contact the workpiece even though its length is diminished over a period of usage.
REFERENCES:
patent: 2536766 (1951-01-01), Pechstein
patent: 2624120 (1953-01-01), Mills
patent: 3063157 (1962-11-01), Keene
patent: 3336678 (1967-08-01), Chamberlain et al.
patent: 3731389 (1973-05-01), King
patent: 3802083 (1974-04-01), Freed
patent: 4293058 (1981-10-01), Burton
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