Abstract: A Ni—Ti alloy part (6) constituting a frame for a pair of spectacles is inserted in and then caulked to a bore (3) formed in a joint piece (2) that is made of a resistance-weldable or resistance-brazeable titanium material. The joint piece (2) has a weldable or brazeable portion (5) that is located remote from the bore (3). This piece (2) will subsequently be resistance welded or brazed to a skeleton member (7) also constituting the frame and made of the same or a different titanium material also weldable or brazeable, so that the Ni—Ti alloy part can firmly and reliably be secured to the skeleton member.

Abstract: A pivotal member 6 is fixed an end-piece 8 secured to an outer edge of each lens rim 2, and has an annular groove 7 formed integral with and around the outer periphery of pivotal member. An end of the end-piece 8 extends upwards along the pivotal member 6 so as to provide a stopper 9 for a temple 5. A front end of the temple is curved to form a C-shaped arcuate member 10 which rotatably engages with the annular groove 7 in the pivotal member 6. The stopper 9 on the retainer abuts against and stops the arcuate member when it has rotated a predetermined angular distance, such that a joint for attaching eyeglass temples does not need any minute hinge bolts and can be of any shape to improve its ornamental value.

Abstract: In an eyeglass frame comprising a pair of lens fixing rims, a bridge connecting the paired rims, and a pair of temples, the bridge and/or the temples are made of Ti-Ni-V alloy having a super elasticity of a generally rectangular stress-strain hysteresis loop over a relevant temperature range of 0.degree.-20.degree. C. so as to improve eyeglass wearing comfortability. The Ti-Ni-V alloy comprises Ni and Ti with an atomic ratio Ni/Ti of 1.02-1.06 and V 0.25-2.0 at. %, and is worked into a desired shape and thereafter is heat-treated at 425.degree.-525.degree. C. for 10-60 minutes.