Abstract: A device for connecting on site two optical fiber transmission cables comprises a table for installation in a cable tunnel on the site and which is provided with a notch on its circumference, a tight box which bears against the table and whereof the two lateral faces have two openings in which are engaged the two cables to be connected, a splicing bench positioned in the table notch and on which are arranged tools for splicing the two cables, and means for joining the bench to the table.

Abstract: The device for protecting optical fibers freed at the end of a cable element comprises a sleeve in which the end of the cable element is forcibly fitted, and a plurality of flexible sheaths mounted in securely fixed relation in the line of extension of the sleeve. Each optical fiber which has been freed from the cable element is positioned within and protected by a corresponding sheath.

Abstract: A device is provided for positioning optical fibers in a terminal connector for splicing two optical-fiber transmission cables, said device comprising an optical-fiber insertion piece having a central recess in which is fitted a terminal connector provided with grooves, and radial slits provided on the periphery of said insertion piece, and optical-fiber distribution means mounted freely rotatable on said insertion piece and having a longitudinal slit intended to come successively opposite each slit of said insertion piece, so that, by rotation of said distribution means, each optical fiber penetrates into a groove of said terminal connector through the slit of said distribution means positioned opposite a slit of said insertion piece.

Abstract: For splicing two optical fiber cables placed within a grooved dielectric support, centering and alignment of the fibers are carried out by means of centering pins inserted in longitudinal openings of an annular flange rigidly fixed to a terminal connector forming an extension of the grooved dielectric support, at least one of these openings being located at a distance from the cable axis which is greater than the radius of the cable.

Abstract: Quick release interconnection of waveguide circuits terminated at least partially by a standard flange is achieved by rotation of a clamping ring which surrounds the first circuit termination and cooperates by means of outer grips with a groove in a base mounted on the second circuit. Tight engagement is obtained by means of protruding pins carried by a sleeve fastened to the first circuit guided by semicircular cams and locked in a recess in inclined spring guides carried by the inner face of the rotatable ring. Disengagement is obtained by rotating the ring counterwise. Fool proof interconnection is obtained by a unique means protruding from the standard flange and registering with a unique recess in said base.