Geometrical instruments – Scriber – Curved line
Patent
1977-08-19
1978-08-01
Haroian, Harry N.
Geometrical instruments
Scriber
Curved line
33138, B43L 904
Patent
active
041034260
ABSTRACT:
A first element may be mounted on the housing or casing of a measuring tape and a second element may be mounted on the end of the tape itself. The first element comprises a pair of pivotally attached devices, one of which is fixed to the housing. The rotatable portion of the first element includes a tape-receiving slot and a center point. When the tape is positioned in the tape-receiving slot, the center point will be located so as to fixably locate the housing at the center of a circle to be drawn. That portion of the first element fixed to the measuring tape housing includes a storage sheath for the center point. The second element is a carriage, mounted on the outer end of the tape to grip the tape at the usual holding means. The carriage includes a bore for receiving a pencil or scriber. A wedge slidably mounted in the carriage cooperates with one edge of the bore to releasably lock a marking device in place.
REFERENCES:
patent: 1246925 (1917-11-01), Hunt
patent: 1986551 (1935-01-01), Anderson
patent: 2581858 (1952-01-01), Hilt et al.
patent: 2976614 (1961-03-01), Matuszewski et al.
patent: 3120059 (1964-02-01), Quenot
patent: 3577641 (1971-05-01), Smith
patent: 3744134 (1973-07-01), Zima
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