Photography – Having camera indicator – Film condition indicator
Patent
1997-05-13
1998-09-15
Gray, David M.
Photography
Having camera indicator
Film condition indicator
396411, G03B 166
Patent
active
058093516
ABSTRACT:
A dual wheel frame counter comprises a tenths counter wheel having a series of ten or less evenly spaced units and respective evenly spaced actuated members equal in number to the series of at least two units, and a unit counter wheel having a series of ten evenly spaced units which correspond to the series of at least two units of the tenths counter wheel and a single actuating member which successively actuates the actuated members to rotate the tenths counter wheel one unit in response to each rotation of the unit counter wheel ten units. The unit counter wheel includes an opposed-end concentric channel having an opening between opposite ends of the channel. The single actuating member constitutes a protuberance on the unit counter wheel which is positioned in the opening to leave respective ingress and egress spaces in the opening between the protuberance and the opposite ends of the channel. The actuated members are positioned on the tenths counter wheel for the protuberance to drive one of the actuated members out of the channel through the egress space to rotate the tenths counter wheel one unit and move another of the actuated members into the channel through the ingress space each time the unit counter wheel is rotated ten units. The fact that one of the actuating members is always in the channel serves to prevent any unintended rotation of the tenths counter wheel with respect to the unit counter wheel.
REFERENCES:
patent: 1642818 (1927-09-01), Lessler et al.
patent: 1888134 (1932-11-01), Kunkler
Eastman Kodak Company
Fields Roger A.
Gray David M.
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