Abstract: A device for establishing a semi-permanent connection of optical fibres comprises an elastic clamp associated with two retaining clamps which are mounted by attachment means such as clips on a support. The clips when in rest position on the support, are adapted to be brought selectively into a first position wherein the corresponding clamp is held with sufficient force for the fibres to be able to slide above them, and a second position wherein the fibres are blocked in place under the corresponding clamp. To establish the connection a fibre is blocked in position under a retaining clamp and an opposite second fibre slides under the opposite retaining clamp and the elastic clamp until its end abuts with that of the first fibre. Thereafter, the clips of the two clamps are placed in the second position so as to secure the connection.

Abstract: A device for mutually engaging the optical faces of at least one pair of optical fibres in a fiber connecting device comprises a mounting plate provided with means for detachably mounting in a given position with respect to the connecting device, at least one pair of clamping members adapted to assume a rest position where at least one of said fibres is left free and an active position where the said fibre is held in order to be displaced so as to be brought into engagement with the other fibre and means for displacing the said pair of clamping members toward said other fibre of the pair when the clamping members are in active position.

Abstract: For splitting an optical fibre the same is disposed on a flexible support. Two clamping devices bear onto the fibre and the flexible support, and a tool initiates the splitting of the fibre. The support is bent until the fibre is split. A cam controls the movements of the tool through a control rod and the movements of said clamping device by means of a roller integral with a movable slide.

Abstract: The end faces of a plurality of parallel optical fibers are all located in one plane at right angles to the general direction of the fibers after simultaneous cutting by a tool unit comprising a sliding shoe which carries a cutting-tool support. During translational displacement of the shoe, the cutting edge of the tool scores each optical fiber in turn. A flat, parallel array of fibers is stretched tangentially to the top generator-line of a bearing cylinder and held in position between two clamping members on each side of the bearing line. At the level of the notch formed in the glass fiber by scoring, each optical fiber is split in transverse cross-section by applying an abrupt tensile stress or flexural deformation to the fiber.

Abstract: This invention concerns a device to spread out flat the fibres of an optical cable, which has first been stripped, so that the fibres can be cut across precisely aligned cross-sections, thereby allowing them to be butt-jointed individually with the fibres of another cable, in a splicing operation.This device comprises hand-operated mechanical means of inserting blades, positioned on a diametrical plane of the cable, to separate the fibres into two groups. One blade acts as a stop, while the first group of fibres is being gathered into the notches of one comb, while the other blade performs the same function for a second comb. The combs and blades are then made to rotate in opposite directions, flattening out the group of fibres on a horizontal plane.This device can be applied to optical fibres used for telecommunications.