Method and means for assembling the parts of cycle frames and the like

Claim 1

A bicycle frame comprising frame elements made of a lightweight tubular material, the frame elements comprising fittings and tubes, said fittings being hollow and having a circular or oval cross section for mounting and assembling the frame, the fittings having a plurality of conical male bearings having branches giving precise angular position, the fittings being made of a single piece of light metal alloy; the tubes being made of a light metal alloy and having at each extremity an opening with a conicity of pitch of about three degrees corresponding to the conicity of the male joints; wherein the ends of the tubes are secured adhesively to truncated bearings in the ends of the tubes; the ends of the tubes for assembling the fittings to the tubes of the frame having inside bearings with an increase taper section up to the end corresponding to the male assembly bearings of the fittings; the ends of the male bearings being conical and in the form of a whistle; the sections of the male assembly bearings of the fittings and the sections of the inside bearings at the ends of the tubes may be circular, oval, triangular, or polygonal; and at least one of the male conical bearings including inside reinforcing means.