A rail clamp comprising two clamp elements (30a, 30b) securable together in clamping arrangement about a railway rail, wherein at least one of the clamp elements (30a, 30b) can include sensor retaining means to hold a sensor to make measurements relating to the rail. A first of said two clamp elements (30b) has a clamp head to engage a fish plate (14b) or a web-side of a railway rail. A clamp foot (34b) engages the underside of a railway rail foot (13). A second of said two clamp elements (30a) having a clamp head to engage the opposite fish plate or web-side of a railway rail and a clamp foot (34a) to engage the underside of the clamp foot (34b) of the first clamp element (34b). The first and second clamp elements (30a, 30b) are secured together by a connector (35), optionally a bolt, to a railway rail.

A rail clamp comprising two clamp elements (30a, 30b) securable together in clamping arrangement about a railway rail, wherein at least one of the clamp elements (30a, 30b) can include sensor retaining means to hold a sensor to make measurements relating to the rail. A first of said two clamp elements (30b) has a clamp head to engage a fish plate (14b) or a web-side of a railway rail. A clamp foot (34b) engages the underside of a railway rail foot (13). A second of said two clamp elements (30a) having a clamp head to engage the opposite fish plate or web-side of a railway rail and a clamp foot (34a) to engage the underside of the clamp foot (34b) of the first clamp element (34b). The first and second clamp elements (30a, 30b) are secured together by a connector (35), optionally a bolt, to a railway rail.

A direct fixation track rail fastener includes a first clip shoulder and a second clip shoulder each having a clip tunnel formed therein. Each clip tunnel is formed in part by a plurality of clip contact faces defining a first prong contact line and a second prong contact line for a prong of a rail clip. The configuration of multiple line contacts prevents undesired displacement of a rail clip during service.

A direct fixation track rail fastener includes a first clip shoulder and a second clip shoulder each having a clip tunnel formed therein. Each clip tunnel is formed in part by a plurality of clip contact faces defining a first prong contact line and a second prong contact line for a prong of a rail clip. The configuration of multiple line contacts prevents undesired displacement of a rail clip during service.

A system for a screwless rail fastening includes a spring element and a supporting collar. The spring element has a bearing section, a curved section, a holding-down section, aligned in the opposite direction to the bearing section, a curved section curved in the direction of the bearing section, and a locking section aligned transversally to the bearing section. The supporting collar includes a fastening section for retaining the supporting collar on the foundation, a carrier section supported by the fastening section, a bearing recess formed on the carrier section for mounting of the bearing section, and a locking head supported by the carrier section on which a counter-bearing for the locking section is formed so that the locking section is retained in a position relative to the bearing section of the spring element.

A system for a screwless rail fastening includes a spring element and a supporting collar. The spring element has a bearing section, a curved section, a holding-down section, aligned in the opposite direction to the bearing section, a curved section curved in the direction of the bearing section, and a locking section aligned transversally to the bearing section. The supporting collar includes a fastening section for retaining the supporting collar on the foundation, a carrier section supported by the fastening section, a bearing recess formed on the carrier section for mounting of the bearing section, and a locking head supported by the carrier section on which a counter-bearing for the locking section is formed so that the locking section is retained in a position relative to the bearing section of the spring element.

The object of the invention relates to a rail mounting device (10) for fixing railway rails (12) to reinforced concrete sleepers (14) which device (10) has a first rail (12) non-fixing state and a second rail (12) fixing state, and which device (10) contains an anchoring element (18) fixed to the reinforced concrete sleeper (14) provided with an open or closed bracket piece (16), and a rail-clamping plate (20) partially or entirely encompassed by the bracket piece (16) of the anchoring element (18), the essence of which is that the rail-clamping plate (20) is a flexible flat plate, and the anchoring element (18) of the rail mounting device (10) has an upper surface which is formed substantially flat and which is at an angle to the upper plane (22) of the reinforced concrete sleeper (14) such that the distance between the first edge of the upper surface of the anchoring element (18) closer to the rail (12) and the upper plane (22) of the reinforced concrete sleeper (14) is smaller than the distance between the second edge of the upper surface of the anchoring element (18) more distant from the rail (12) and the upper plane (22) of the reinforced concrete sleeper (14), and in the first state of the rail mounting device (10) the rail-clamping plate (20) lies on the upper surface of the anchoring element (18), whereby the rail-clamping plate (20) is also arranged at an angle to the upper plane (22) of the reinforced concrete sleeper (14) and in the first state of the rail mounting device (10), the angle between the rail-clamping plate (20) and the upper plane (22) of the reinforced concrete sleeper (14) is between 5 to 20 degrees and the rail-clamping plate (20) is made from a maximum of 6 mm thick cut sheet steel.

The object of the invention also relates to a method for fixing railway rails (12) to reinforced concrete sleepers (14).

The object of the invention relates to a rail mounting device (10) for fixing railway rails (12) to reinforced concrete sleepers (14) which device (10) has a first rail (12) non-fixing state and a second rail (12) fixing state, and which device (10) contains an anchoring element (18) fixed to the reinforced concrete sleeper (14) provided with an open or closed bracket piece (16), and a rail-clamping plate (20) partially or entirely encompassed by the bracket piece (16) of the anchoring element (18), the essence of which is that the rail-clamping plate (20) is a flexible flat plate, and the anchoring element (18) of the rail mounting device (10) has an upper surface which is formed substantially flat and which is at an angle to the upper plane (22) of the reinforced concrete sleeper (14) such that the distance between the first edge of the upper surface of the anchoring element (18) closer to the rail (12) and the upper plane (22) of the reinforced concrete sleeper (14) is smaller than the distance between the second edge of the upper surface of the anchoring element (18) more distant from the rail (12) and the upper plane (22) of the reinforced concrete sleeper (14), and in the first state of the rail mounting device (10) the rail-clamping plate (20) lies on the upper surface of the anchoring element (18), whereby the rail-clamping plate (20) is also arranged at an angle to the upper plane (22) of the reinforced concrete sleeper (14) and in the first state of the rail mounting device (10), the angle between the rail-clamping plate (20) and the upper plane (22) of the reinforced concrete sleeper (14) is between 5 to 20 degrees and the rail-clamping plate (20) is made from a maximum of 6 mm thick cut sheet steel.

The object of the invention also relates to a method for fixing railway rails (12) to reinforced concrete sleepers (14).

A boltless brace assembly for a rail includes a base block interlocked with a brace, and further includes a wedge to be inserted between an upper surface of the base block and a lower surface of the brace, thereby applying an upward force to the brace and a resultant downward force to secure the rail base. The brace assembly may be modified to provide a universal brace assembly, a resilient brace assembly, or a frog base clamp.

A boltless brace assembly for a rail includes a base block interlocked with a brace, and further includes a wedge to be inserted between an upper surface of the base block and a lower surface of the brace, thereby applying an upward force to the brace and a resultant downward force to secure the rail base. The brace assembly may be modified to provide a universal brace assembly, a resilient brace assembly, or a frog base clamp.