Contour reading device suitable for use on eyeglass frames
AssigneeEssilor International Cie General d'Optique
InventorsFrancois Brule, Alain Chansavoir
Life of this patent
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Abstract
A device for reading contours, as of eyeglass frames, comprises a feeler adapted to be applied to an article in order to read its contour. A carriage supports the feeler and is movable to-and-fro on a guide. A drive motor moves the carriage on the guide. A floating mounting is disposed between the feeler and the drive motor.
Claims20
Device for reading closed contours of articles, comprising a feeler adapted to continuously bear against and move with respect to an article to read its closed contour, a first carriage supporting said feeler, a guide guiding said first carriage for to-and-fro movement, a drive motor means for moving said first carriage on said guide, an auxiliary carriage associated with said first carriage and mounted for to-and-fro movement parallel to said first carriage, resilient means for floatingly mounting said auxiliary carriage relative to said first carriage and permitting limited movement in opposed directions, sensing means responsive to relative movement between said auxiliary carriage and said first carriage, said drive motor means effecting displacement of said feeler in bearing contact with the articles through said first carriage and said auxiliary carriage, said sensing means operably connected to said drive motor means for controlling the displacement of said feeler and for maintaining said feeler in bearing contact with an article in response to the relative movement between said auxiliary carriage and said first carriage.
Device for reading closed contours of articles such as eyeglass frame surrounds, comprising a feeler adapted to continuously bear against and move with respect to an article to read its closed contour, a first carriage, a first guide guiding said first carriage for to-and-fro movement, a first drive motor means for moving said first carriage on said first guide, a first auxiliary carriage carrying said feeler and associated with said first carriage mounted for to-and-fro movement parallel to said first carriage, resilient means for floatingly mounting said first auxiliary carriage relative to said first carriage and permitting limited movement in first opposed directions, said first drive motor means effecting movement of said feeler through said first carriage and said first auxiliary carriage, first sensing means responsive to relative movement between said first carriage and said first auxiliary carriage, a second carriage, a second guide substantially perpendicular to said first guide for guiding said second carriage for to-and-fro movement, second drive motor means for moving said second carriage on said second guide, a second auxiliary carriage associated with said second carriage mounted for to-and-fro movement parallel to said second carriage, resilient means for floatingly mounting said second auxiliary carriage relative to said second carriage and permitting limited movement in second opposed directions perpendicular to said first opposed directions, said second auxiliary carriage being operably connected to said first auxiliary carriage, said second drive motor means effecting movement of said feeler through said second carriage and said second and first auxiliary carriages, second sensing means responsive to relative movement between said second carriage and said second auxiliary carriage, said first and second sensing means being coupled to the respective first and second drive motor means for controlling the displacement of said feeler and for maintaining said feeler in bearing contact with an article in response to the relative movement between said first carriage and said first auxiliary carriage and said second carriage and said second auxiliary carriage respectively.
Dependencies are inferred from the claim text.