Section 71.—ROPE, BELT, AND CHAIN PULLEYS.
(See also [Section 66].)
[1241]. Pulley for round rope without any grip.
[1242]. Round grooved pulley for round rope with gripping snugs.
[1243]. V pulley for round rope; pithead pulley.
Pulley for wire rope transmission, high speed with wood bedding. See [Section 66], [No. 1202].
Multiple rope gripping pulley for rope driving. See [Section 66], [No. 1200].
[1244]. Belt pulley, flat fare.
[1245]. Belt pulley, crown face. The rounding tends to keep the belt from running off.
[1246]. Flanged belt pulley.
[1247]. Speed cone for belt.
[1248]. Round grooved chain pulley.
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[1249]. Double grooved chain pulley; prevents the chain twisting.
[1250]. Pitched chain snug pulley or sprocket pulley. The pitch of snugs should be slightly longer than the chain, to allow for wear and stretching of the chain.
[1251]. Chain sprocket wheel, for long link chain at slow speeds.
[1252]. Sprocket wheel, for long flat link pitched chains.
[1253] & [1254]. Sections of rim showing single and double links.
[1255]. Sprocket wheel, for Ewart’s patent pitched chains. See Chains &c., [Section 11].