424
EXPOSITION AT VIENNA.
from intermediate stations on the way. It is estimated that to convey, say 25 horse-power, costs by wire-rope eight cents per foot; the same, by belt, $1.40 per foot.
Of the few tools which deserve attention for their novelty, one was a locomotive double-wheel lathe, in which the wheels are supported and turned on their own axles. On the head-stocks of the lathe are cast brackets, bearing Y-shaped adjustable boxes, in which the journals of the axles revolve. Around the rear of these boxes, on a portion of the bracket which is turned for the purpose, revolve the face-plates, driven by a powerful gearing. These face-plates are made in two parts, in order to get over a collar on the bracket which holds them in place, they merely serving as drivers to the wheels. A pin set up against each end of the axle prevents end motion. This lathe was exhibited by the Saechsische Maschinen-fabric of Chemnitz (formerly Richard Hartmann & Co). The same firm displayed a drill and slotting-machine, adapted for heavy work. The drill-spindle, which lies horizontally, has an automatic feed; the carriage which holds it, slides up and down upon the side of the standard which supports it, and the standard itself moves horizontally on its bed. The last two motions serve for drilling slots, either horizontally or vertically, and also for adjusting the tool in front of heavy work for drilling. Several tools were exhibited by Johann Wagner & Co., of Dortmund, for railroad work. One of these was a very heavy milling machine, with travelling-head, for milling the ends of rails. Another, a similar machine, carrying a saw for sawing off the ends of rails, cold ; still another,—a tool with three horizontal drills, the drills having a short transverse motion and self-feed, for drilling oval holes near the ends of rails. By expansion gears, the distance of the holes from each other can be varied.
The same firm exhibited some tools adapted to planing the spokes of locomotive wheels and to drilling the rims from the inside. Other tools were shown by Sharp, Stewart & Co., and others, for planing the inside of the rim and like operations. As such tools would not be applicable to our modes of work, a description is not necessary.
The Deutsche Werkzeugmaschinen-fabric of Chemnitz, exhibited a novel machine for planing on an arc of a circle