Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Work-gripping clamp
Patent
1977-05-09
1979-12-11
Vlachos, Leonidas
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Work-gripping clamp
408115B, 351111, B23B 4728, B23B 4902
Patent
active
041781163
ABSTRACT:
The spectacle frame includes a frontal lens support incorporating a nose bridge, a pair of temples, and hinges connecting each temple to an outer end of the lens support. A blind bore is formed in either the lens support or the temple at at least one outer end of the lens support. An adjustment mechanism, including an internally threaded sleeve and an externally threaded adjusting rotor member, is inserted in each bore. The adjusting rotor member has an outer end engaging the other of the lens support and the temple. The adjusting mechanism is formed with a notched or knurled operating head particularly configured for operative association with assembling tools. For the purpose of incorporating the adjustment mechanism into already manufactured spectacle frames, each comprising a frontal lens support and a pair of temples, with the frontal lens support having two half hinges each adjacent one of its outer ends and each temple having a half hinge adjacent its inner end, a template or jig is provided cooperable with the half hinge on either the frontal lens support or a temple, or with a full hinge if the temples are already assembled on the lens support, for properly guiding a drill bit for forming the bore to receive the internally threaded sleeve. The template is provided with adjusting elements so that it may be properly positioned for forming the blind bore in either a substantially flat surface of a lens support or temple or a bevel surface thereof, and includes a guide for a drill bit which may be formed or provided with a stopper or abutment for limiting the depth of drilling.
REFERENCES:
patent: 386739 (1888-07-01), Connelly
patent: 3021734 (1962-02-01), Schlage
patent: 3053121 (1962-09-01), Proctor
patent: 3062076 (1962-11-01), Craig
patent: 3635571 (1972-01-01), Roberts et al.
patent: 3708237 (1973-01-01), Kruse
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