[Larger plate.]

[693]. Iron wire or rod guides, strained tight, are sometimes used, especially in mines, as guides for the cage; two are used to guide the cage and two for the balance weight.

[694]. Planished round iron guides, with half round fixing brackets and runners attached to cage; these guides are equal to planed bars and much less costly; two are usually sufficient for any cage.

[695]. T L or ⊔ iron guides, for goods lifts.

[696]. Wire rope guides, with separate pair of wood guides for balance weight.

[697]. Intermediate guides for double cage lifts; for large cages extra guides at each side should be used.

[698]. Sloping carriage guides.

[699]. Vertical bracket cage guides.

MACHINE GUIDE BEDS.

[700]. Double V bed, with set screw adjustments.