Skinner, Frank W. (Frank Woodward), 1858-1932 · New York, McGraw · leaf 97
is secured by a vertical centerbolt with countersunk head, which is tapped into the roller plateor pedestal. The roller plate is made with a center guide strip, and thefour edges are curtained by the vertical flanges of two trans-verse angles riveted to the ends of the plate and by verticalplates…
Bridges
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