Geometrical instruments – Scriber – Curved line
Patent
1987-03-18
1988-05-17
Stearns, Richard R.
Geometrical instruments
Scriber
Curved line
248 741, 248230, B43L 904, F16L 308
Patent
active
047441496
ABSTRACT:
A marker holding device for attachment to the shaft of an ice scribe is disclosed. The device included two clamps, a first of which attaches to the shaft of the scribe, and a second of which holds the marker. The two clamps are pivotably attached to one another so that the marker may be positioned either downwardly for contact with the ice for marking the same, or upwardly away from the ice so that a conventional scribe tip on the end of the shaft can be used to scratch the ice. In a first embodiment, a pivot bolt connects the two clamps together, and is selectively loosened and tightened to allow adjustment of the marker position. A pair of stop pins are provided on one of the clamps to limit the rotation of the marker clamp relative to the scribe clamp so that the marker can be easily and quickly positioned in either the up or down position. In a modification of the first embodiment, a bullet catch is disposed in one of the clamps which cooperates with a pair of recesses in the other clamp to allow fixed positioning of the marker in the up or down position. Finally, in a second embodiment, two band type "C" clamps are employed which are connected back to back with a spring biased rotatable cam lock that permits two fixed positions between the clamps corresponding to the up and down positions of the marker.
REFERENCES:
patent: 1263560 (1918-04-01), Kaufmann
patent: 1898866 (1933-02-01), Bragger
patent: 2091763 (1937-08-01), Macbeth
patent: 2466717 (1949-04-01), Littell
patent: 3025089 (1962-03-01), Ramsden
patent: 3385545 (1968-05-01), Patton
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