GB804743A - Improvements in or relating to guide rails for elevators, hoists, lifts and the like - Google Patents

Abstract

804,743. Guide rails for lifts. BERTE, G. B. Feb. 18, 1957 [Feb. 23, 1956; Oct. 2, 1956], No. 5371/57. Class 78 (3). A lift or hoist guide rail is built up from units each comprising a steel member 1, Fig. 1, having a cylindrical part 1a spaced by webs 1c from flanges 1b, a cylindrical core 2 and a plate 4 which engages the flanges lb. The core 2 and plate 4 are of the same length as the member 1 and project at opposite ends, as shown in Fig. 9, whereby a number of the units may be located and aligned to form the guide rail. Short trapezoidal cores 3 may be provided at the joins. The cores 2, 3 may be tight fits in the members 1, or alternatively nuts and bolts 7, 8 may be used to tighten the outer members on the cores, sleeves 5, 6 or distance pieces being used to prevent over-tightening. In use the plates 4 are attached to the sides of the shaft and the parts 1a form the guide surfaces. In modifications the flanges 1b may be U-shaped and the plate 4 flat, and the webs 1c may be parallel or may be welded together round the core 2.