The theory and practice of modern framed structures : designed for the use of schools, and for engineers in professional practice (1897)
Johnson, J. B. (John Butler), 1850-1902, Bryan, C. W. (Charles Walter), 1863-1927, Turneaure, Frederick Eugene, 1886- · New York : J. Wiley & Sons · leaf 402
heir proper circle, so that the centre pin is frequently subjected to a series of displacementslaterally. If the loads are comparatively light, the pin and centre casting can be made towithstand this tendency to displacement by anchoring the centre casting to the masonry. The most approved design… … Fig. 392. In this kind of a turntable, the load on the centre pin not only relieves the load on therim, whereby the bridge turns easier, but it also aids in holding the centre pin in its proper 564 MODERN FRAMED STRUCTURES. position, and in this way helps to keep the rollers in the proper circle.…
