[2228]. Vertical pivot, with hardened screws.
Ball bearings. See [Section 70].
Roller bearings. See [Section 70].
[2229]. Bearing, with side brasses, set up by a set screw.
[2230]. Bearing, with 3 brasses, set up by a set screw.
[2231]. Bearing, with 3 brasses, the side brasses set up by wedge bolts, regulated on top.
[2232]. Bearing, with 3 brasses, set up by side wedges and top screws.
[2233]. Schiele’s vertical shaft bearing.
White metal is much used for bearings, and may be run in around a shaft. The brasses are sometimes made of skeleton form to receive white metal in this way.