We show in Fig. 1 a general view, and in Figs. 2 and 3 a side
elevation and plan of an overhead steam traveling crane, which has
been constructed by Mr. Thomas Smith, of Rodley, near Leeds, for use
in a steel works, to lift, lower, and travel with loads up to 15 tons.
For our engravings and description we are indebted to _Industries._
The crane is designed for hoisting and lowering while traveling
transversely or longitudinally, and all the movements are readily
controlled from the cage, which is placed at one end of and underneath
the transverse beams, and from which the load can be readily seen. All
the gear wheels are of steel and have double helical teeth; the shafts
are also of steel, and the principal bearings are adjustable and
bushed with hard gun metal. This crane has a separate pair of engines
for each motion, which are supplied with steam by the multitubular
boiler placed in the cage as shown. The hoisting motions consist of
double purchase gearing, with grooved drum, treble best iron chain
with block and hook, driven by one pair of 8 in. by 12 in. engines.
The transverse traveling motion consists of gearing, chain, and
carriage on four tram wheels, with grooved chain pulleys, driven by
the second pair of 6 in. by 10 in. engines, and the longitudinal
traveling motion driven by the other pair of 8 in. by 12 in. engines.
The transverse beams are wrought iron riveted box girders, firmly
secured to the end carriages, which are mounted on four double flanged
steel-tired wheels, set to suit a 38 foot span.
[Illustration: IMPROVED OVERHEAD TRAVELING CRANE]
[Illustration: FIG. 2 SIDE ELEVATION]
[Illustration: FIG. 3 PLAN]
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