The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

UNDER-FRAMES.

[209]. Two-wheel suspension car for single rail or wire rope, used commonly on some kinds of cranes. See [Section 18].

[210], [211], [212], & [213]. Three-wheel cars. See also the various types of tricycles in use.

[214], [215], [216], & [217]. Various forms of four-wheel under-frames, with and without swivelling bogies.

A car with four wheels arranged as [No. 217], but with the leading and trailing wheels slightly raised off the ground, is used as a goods car or hand truck, and is very readily swivelled about, running, of course, actually on three wheels only.

[218]. Five-wheel under-frame, with and without swivelling bogies.

[219] & [223]. Plans of six-wheel cars, with swivelling gear for curves; the centre pair having end play, swivel the leading and trailing axles by means of the jointed stays.

[220]. Plan of four-wheel car, with swivelling gear for curves.

[221], [222], & [224]. Six-wheel cars, the latter with leading and trailing swivelling bogies.

[225]. Eight-wheel double-bogie under-frame. This is the plan usually employed in long cars; each bogie is free to swivel independently, and is centrally loaded.