Guide rail for equipment for working on concrete and rock

A guide rail for a processing apparatus used when working on concrete and rock, said guide rail having a longitudinal axis (A) and bent from a one-piece section of sheet metal formed of stainless steel, said guide rail having an upper part (7) and a lower part (5) spaced from said upper part (7) and each extending in the direction of the longitudinal axis (A) and having longitudinally extending edges on opposites sides of said longitudinal axis, symmetrical longitudinally extending sides (9, 10;

• 11, 12) extending between said upper and lower parts, said sides (9, 10;
• 11, 12) forming longitudinally extending supporting and guiding surfaces (9, 10;
• 11, 12) with each said sides comprising a first side surface (9;
• 11) extending laterally outwardly from each of said, longitudinally extending edges of said upper part and a second side surface (10;
• 12) extending laterally outwardly from each of said, longitudinally extending edges of said lower part, so that said first and second side surfaces are angularly disposed to one another and meet at a line laterally outwardly from and intermediate said upper and lower parts, said upper part having a planar profiled surface (13) indented toward and spaced from said lower part (5) and extending in the direction of the longitudinal axis (A) for the full longitudinal length thereof and comprising perforations (17) therethrough spaced uniformly apart in and extending transversely in the direction of the longitudinal axis (A) with cross bars (16) located between said perforations (17), said cross bars (16) arranged to form contacting edges for positioning a feed mechanism forming a part of the processing apparatus.