Geometrical instruments – Straight-line light ray type – Structurally installed
Patent
1978-03-24
1979-03-06
Stephan, Steven L.
Geometrical instruments
Straight-line light ray type
Structurally installed
F41G 100
Patent
active
041422988
ABSTRACT:
A one-piece carriage is proportioned for sliding engagement with an elongated guide which mounts an elongated micrometer screw laterally thereof and parallel thereto. An integral, lateral extension of the carriage overlies the screw and is provided with a slot perpendicular to the screw, the slot freely receiving the latch portion of a lever which is secured pivotally in the slot by a pivot pin disposed parallel to the screw. The outer portion of the lever forms a lever actuator for engagement with the screw, a spring interengaging the lever and carriage for urging the latch portion resiliently into engagement with the screw. The carriage also supports a block which mounts an archery bow sight.
REFERENCES:
patent: 3355809 (1967-12-01), Guyton
patent: 3787984 (1974-01-01), Bear et al.
patent: 3854217 (1974-12-01), Killian
patent: 3871105 (1975-03-01), Brougham
Nilles James E.
Stephan Steven L.
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