Abstract: An improved shoe, promoting a heel-to-toe motion of a foot, comprising an outsole and an upper part. The outsole has a contraction extending to a first area where a back of the foot is located. The upper part has a heel guide, including one of a heelplate and a flexible heel brace, which are arranged in a second area where the heel of the foot is located, such that an Achilles tendon of the foot is free.

Abstract: For the purpose of connecting frogs consisting of austenitic manganese steel casting with rails consisting of carbon steel there is proposed an aluminothermic process in which the carbon content of the aluminothermic welded connection is limited with 0.2 percent by weight. In this case, the procedure is preferably such that the composition of the melt corresponds, as related to the Schaffler-diagram, to a Ni-equivalent of 13 to 35 percent and to a Cr-equivalent of 8 to 25 percent, noting that for a carbon content of .ltoreq.0.15 percent and preferably .ltoreq.0.1 percent, the equivalent value for Ni is 1x%Ni+30x%C+0.5%Mn and the equivalent value for Cr is 1x%Cr+1x%Mo+1.5x%Si.

Abstract: In a steel frog for rail crossings and rail switches, the frog point or, respectively, the surface of the frog being travelled upon by the wheels consists of an age-hardening steel having the composition______________________________________ C 0.01 to 0.05% Ti 0.1 to 1% Si 0.01 to 0.2% Cr 0 to 13% Mn 0.01 to 0.2% Al 0 to 0.2% Co 0 to 15% B 0 to 0.1% Mo 1.5 to 6% Zr 0 to 0.1% Ni 7 to 20% ______________________________________The frog is manufactured such that the surface being travelled upon by the wheels is applied by build-up welding onto a base body consisting of nominal rail steel.

Abstract: Process for producing a component part of a railway switch or of a railway crossing in which frogs consisting of austenitic manganese steel casting are, with interposition of an intermediate piece, connected by a welding operation with rails consisting of carbon steel, characterized in that an intermediate piece is welded to the portions of the frog or of the component part of the railway crossing which are to be connected with the rails, and in that this intermediate piece consists of austenitic steel, whereupon the frog or the component part of the railway crossing is, together with the intermediate piece, heated to a temperature, preferably to about 1050.degree. C.