Work holder for eyeglasses

A work holder for eyeglasses comprising:

• a. a support base,
• b. a clamping head swivelly mounted on the support base, the head comprising:
• 1) a housing,
• 2) a first adjustable jaw assembly comprising a first adjustment screw extending laterally into the housing, a first shuttle in the housing and a first clamping jaw extending outward from the shuttle, the screw threadedly received into an opening in the shuttle and held by the housing against axial movement with respect to the housing, the first clamping jaw having spaced first concave holding surfaces thereon,
• 3) a second adjustable jaw assembly comprising a pair of arms in the housing, each pivoted at one end in the housing and extending generally away from the first adjustable jaw assembly, the distal ends of the arms carrying a second clamping jaw extending outward from the head comprising spaced second concave holding surfaces, a pair of second shuttles pivoted to the arms respectively intermediate the pivots and distal ends, a second adjustment screw extending laterally into the housing, the second adjustment screw being held by the housing against axial movement, the second adjustment screw having thread portions of opposite sense, the portions being threadedly received into openings in the second shuttles respectively,
• whereby turning the second adjustment screw in one direction moves the second concave holding surfaces toward each other and toward the first concave holding surfaces, and turning the first adjustment screw in one direction moves the first concave holding surfaces toward the second concave holding surfaces, such movement adapted to have the holding surfaces engage and clampingly support a framed lens of a pair of eyeglasses.