[681]. Diagonal crosshead and guide bars, to allow the crank and connecting rod end to pass the guide bars.

VALVE ROD GUIDES.

[682], [683], [684], & [685].

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].