Abstract: A sheath for railway track fixings, and a procedure and tools for replacing the sheath in a sleeper, the sheath being free of projections that prevent the rotation thereof and comprises a helical rabetting on an outer surface configured to house a helical projection of the sleeper and thread with respect to the helical projection, the sheath comprising an inner thread configured to house a male thread of a coach screw, wherein the helical rabetting comprises an upper part having a concave curved configuration and a lower part having a straight configuration, the sheath further comprising removable anti-rotation means to prevent a rotation movement of the sheath when it is housed in the sleeper.

Abstract: A method and a device for confirmation automatically of the state of tightness of fastenings of railroad tracks are provided, so that from a train that is traveling over a track it is possible to detect a signal from each of the fastenings which indicates if the degree of tightness of these fastenings is sufficient, or if, to the contrary, the fastening is deficient because it is either loose or damaged. For this, a device according to the invention comprises a pressure sensor element and at least one electrically conducting element connected to the pressure sensor, whereby a variation is produced of at least one electric magnitude/value proportional to the pressure of tightness present in at least one point in said fastening during the passage of a train. The invention also relates to an insulating plate for fastenings and to railroad track plant, which incorporate a sensor device object of the invention.

Abstract: Support plate for flexible fastenings of railway rails applicable in the scope of the railway industry, destined to allow an elastic and flexible fastening for the absorption of deformations produced on the rail, which basically comprises a single-piece structure with means of guiding and supporting a rail (21) on a bearing area (18), a plurality of contact slits (5) and rail shoes (9) to house and fasten a fastening rail splice (6) of said rail (21), an upper part with a flat central span (12) configured to support a rail (21) flange (22), a plurality of securing holes (11) in each outer area (20) configured to secure the support plate on a bearing area (18) and a plurality of ridges (16) on its underside (15).

Abstract: This unit comprises two independent rectangular prismatic parts, fitted into each other by superposition, the top or head of the unit involving a flap cover articulated on one of its sides, which carries on its top face, a handle for activation and on the lower face, the continuity bridges. The continuity is established among the service and the couple terminals, two by two, in such a manner, that when the cover is rotated during the opening movement it carries said continuity bridges with it, simultaneously emerging from end grooves for insertion of said service and couple terminals, remaining joined to the cover and the latter, to the head of the unit by means of its hinge.

Abstract: A device for connection to telephone system modules for testing of telephone lines associated with the modules. The device includes structure formed of multiple parts fitted together, wherein a top part provides a cover providing access to telephone terminals for testing characteristics of a telephone line. The top part has a central orifice for receiving a manually operated, rotationally disposed control device, the control device engaging tabs associated with metallic parts which are disposed in a reverse symmetrical arrangement in one of the multiple parts. The tabs impart straight line movement to the metallic parts in response to rotational operation of the control device to cause the parts to engage the telephone terminals.

Abstract: A modular block for connecting, disconnecting and testing a telephone line, including a plurality of conductor holders each for connecting, or for disconnecting an insulated subscriber wire pair, a plurality of removable elements for providing a connection to an insulated subscriber wire pair, and for manually establishing or cutting the connection between a subscriber wire pair and a conductor holder, at least five, or a plurality of five connecting units each including one of the conductor holders for connecting a subscriber wire pair to a removable element in groups of at least five or a grouping of a plurality of five units, to form the modular block, the connecting units being arranged in two inversely symmetrical parallel rows to form one row and another row, with three of each five units being disposed in one row and the remaining two of each five units being disposed in the other row.

Abstract: The object of the present invention is constituted by an improved self-compensating dropper, for underground irrigation, which is provided at its out-put mouth (1) with a spherical valve (2), of irreversible unidirectional flow in the out-put direction, though it prevents the entrance to its interior, of earth or gravel which might obstruct it or make it unusable. The sphere (2) is retained by a central stop (6) joined to the body of the dropper by attachment lugs (5), among which there are orifices (4) in the shape of circular crown segments through which the irrigation water may flow.