Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 285
Fig. 583. … Fig. 581 is a ball-and-socket hanger the construction of which is similar tothe pillow-block. The centre spherical bearings are adjusted vertically by the MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. 269 screws d and e, the interior of whicli are made in hexagonal form and intowhich a key is fitted…
Mechanical drawing
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