[681]. Diagonal crosshead and guide bars, to allow the crank and connecting rod end to pass the guide bars.
VALVE ROD GUIDES.
GUIDE ROLLERS.
[686] & [687]. Guide rollers for ropes, &c.
[688] & [689]. Guide rollers for bars of various sections.
LIFT AND HOIST GUIDES.
[690]. Cage guided by four corner posts.
[691] & [692]. Cage runs on two vertical rails, and is steadied by a third guide. For large cages. Small cages only require guides on one side, as [692].