Abstract: A pair of spectacles is provided, wherein a temple main body includes a plate spring section formed to a side of the front frame; and a highly rigid section formed to a rear side of the plate spring section with the ear suspension section inclusive and having bending rigidity higher than that of the plate spring section while the plate spring section is formed in such a manner that its vertical width is rendered constant or tapered with narrowed by a predetermined ratio from its frontal side to its rear side as well as such that a thickness of the plate spring section satisfies the predetermined equation in relation with vertical widths of the plate spring section, positions in a longitudinal direction thereof and an abutment position with the lateral side of the head at the highly rigid section.

Abstract: A pair of spectacles is provided, wherein a temple main body includes a plate spring section formed to a side of the front frame; and a highly rigid section formed to a rear side of the plate spring section with the ear suspension section inclusive and having bending rigidity higher than that of the plate spring section while the plate spring section is formed in such a manner that its vertical width is rendered constant or tapered with narrowed by a predetermined ratio from its frontal side to its rear side as well as such that a thickness of the plate spring section satisfies the predetermined equation in relation with vertical widths of the plate spring section, positions in a longitudinal direction thereof and an abutment position with the lateral side of the head at the highly rigid section.

Abstract: The present invention relates to the rimless spectacles with lens holding stability, the jointing condition between the respective lenses and the parts to be engaged thereto of which spectacles is very stable and which shape stability lasts for a long period of time. Such rimless spectacles is provided as not only being stable in the jointing condition between the respective lenses and the parts to be engaged thereto so as to keep its shape intact for a long period of time and simplifying the number of the assembly parts so as to be advantageous for the parts inventory control as well as the maintenance thereof, but also improving the production efficiency thereof.

Abstract: Eyeglasses with a connecting structure preventing deformation of parts or breakage of lenses even if excessive force is exerted on the eyeglasses, and a screwless hinge avoiding deflection of temple in vertical directions and stable in opening and closing. The connecting structure includes first member, fixed to lens, having mounting groove formed at outer periphery thereof and second member, connected to temple or bridge, having U-shaped bent portion introduced from one direction and resiliently engaging with the groove. The hinge includes cylindrical member provided on an end member, and J-shaped bent portion formed on the end of the temple, the bent member including first leg to be inserted into center hole of the cylindrical member and second leg contacting with outer periphery of the cylindrical member, when the first leg is inserted into the center hole, the first and second legs resiliently clamping the cylindrical member.

Abstract: Eyeglasses with a connecting structure preventing deformation of parts or breakage of lenses even if excessive force is exerted on the eyeglasses, and a screwless hinge avoiding deflection of temple in vertical directions and stable in opening and closing. The connecting structure includes first member, fixed to lens, having mounting groove formed at outer periphery thereof and second member, connected to temple or bridge, having U-shaped bent portion introduced from one direction and resiliently engaging with the groove. The hinge includes cylindrical member provided on an end member, and J-shaped bent portion formed on the end of the temple, the bent member including first leg to be inserted into center hole of the cylindrical member and second leg contacting with outer periphery of the cylindrical member, when the first leg is inserted into the center hole, the first and second legs resiliently clamping the cylindrical member.

Abstract: For the purpose of improving upon a clip-on attachment spectacles, an easy assembly therefor is provided herein, which assembly takes advantage of such merit of the prior clip-on attachment spectacles as the bridge portion thereof elastically contracts and extends so as to hand onto the frontal surface of the lenses of the spectacles in use, but which assembly structurally facilitates not only the extension and contraction of the bridge portion, but also the engagement between the bridge portion of the attachment spectacles and the glasses thereof as well as that between the hooks to be hung onto the lenses of the spectacles in use and the attachment glasses.

Abstract: A rimless eyeglass frame and rimless eyeglasses are disclosed, which are not affected by a face width of a wearer of eyeglasses or deformation during use, and does not require adjusting operation or even required, adjustment operation can be simple. The rimless eyeglasses have left and right lenses, a wire form frame member having opposite ends and extending toward left and right, and a pair of lens holding portions arranged at center portion of the frame member and holding the left and right lenses at positions in the vicinity of inner edge portions thereof. The frame member is in non-contact with upper edge portions of the left and right lenses.

Abstract: This invention relates to a method for working an auxiliary spectacle lens to be added to the spectacles in use, in more details, pertaining to a technique for efficiently working such lens that is light in weight and easy to be stably mounted in front of the lenses of the spectacles in use. That is to say, this method comprises the steps of opening a slit of a size on a fringe portion of an unworked auxiliary lens made of synthetic resin by means of a shearing tool and tightly mounting a joint piece with a pigeon-eyed hole opened therein or that provided with bent portions to be suspended onto the lenses of the spectacles in use into said slit. Accordingly, this invention enables even an optical shop of a small scale to deal with such working just by obtaining an unworked auxiliary lens made of synthetic resin, a joint piece and a shearing tool of a simple structure.

Abstract: A rimless eyeglass frame and rimless eyeglasses are disclosed, which are not affected by a face width of a wearer of eyeglasses or deformation during use, and does not require adjusting operation or even required, adjustment operation can be simple. The rimless eyeglasses have left and right lenses, a wire form frame member having opposite ends and extending toward left and right, and a pair of lens holding portions arranged at center portion of the frame member and holding the left and right lenses at positions in the vicinity of inner edge portions thereof. The frame member is in non-contact with upper edge portions of the left and right lenses.

Abstract: A method is provided for bending a difficult-to-work metallic wire into a complicated profile. A predetermined length of the difficult-to-work metallic wire is prepared. Part of a portion thereof is held by a conductive clamping device. A first conductive pressure member is brought into contact with a first bending work position of the workpiece, while applying a predetermined pressing force thereto, electric power is supplied between the first member and the clamping device via the wire. Thereby, the wire is bent by a predetermined amount, which part of the wire thus bent by the predetermined amount is located on a conductive rod having a circular cross-section. A second conductive pressure member is brought into contact with a second bending work position of the wire, while applying a constant pressing force to the second member, electric power is supplied between the second member and the conductive rod via the wire.

Abstract: In a mounting structure of detachable lenses to main spectacles according to the present invention, a detachable lens is provided on the surface side of each lens of main spectacles one over the other, a first magnetically-fitting piece is provided on one of the circumference of each lens and that of each detachable lens mounted to the corresponding lens one over the other, a second magnetically-fitting piece magnetically fitted to the corresponding first magnetically-fitting piece is provided on the other, guide projections are provided symmetrically on one of the circumference of each lens and that of each detachable lens mounted to the corresponding lens one over the other, and a guide hole allowing the corresponding guide projection to guide thereinto is provided in the other.

Abstract: This invention relates to a hinge structure in a frame of spectacles, wherein a bearing member having a pair of shaft insertion portions is mounted to a lens frame, a bifurcate member having shaft portions is fixed to an end of a temple to be in parallel with the temple, the shaft portions are respectively inserted into the shaft insertion portions such that the bifurcate member is horizontally movable, and a release prevention member is interposed inside the bifurcate member. Even if an external force is applied to a distal end of the bifurcate member, the bifurcate member is never released from the bearing portion, and smooth opening and closing functions of the temple may be guaranteed for a long period of time.

Abstract: The present invention relates to a temple frame mounting structure in spectacles. A notch portion is provided in a part of an annular side of a lens frame, and a pair of clamped pieces are fixed at positions of the lens frame between which the notch portion is positioned, and have distal ends extending apart from the lens frame in a direction of eyes. The clamped pieces are guided to the groove-like clamp pedestal having a pair of bearing portions on both sides, and are clamped to the clamp pedestal by a cam piece horizontally movably and pivotally mounted to the bearing portions of the clamp pedestal, thereby pivotally mounting the temple frame to an end of the cam piece.

Abstract: The technical issues of the present invention are to provide a pair of the rimless spectacles whose right-and-left lenses can be mechanically simply interlocked and held in a stable condition by means of three points supporting system with simple metallic holding parts and also which is easy to correct an error of locking holes bored in the lenses, and if necessary, further to provide a pair of the rimless spectacles which is fittable to those eyeglasses wearers whose right-and-left eyes are narrow in distance and whose face is wide in breadth and which is also adequate for P.D. (pupil distance) standard.