New York [etc.] Simmons-Boardman Pub. Co. [etc.] · leaf 117
the bar in the slots, which movementreleases the bar, which quickly drops. The heavierthe load the easier the bar will trip and drop theload. Perfect control ol the load is had without dan-ger of slipping, with this jack, but the peculiar con-struction of which we speak permits the quick drop-ping… … ngexcellei .•!■ patter cal railroad work and areservice. VERTICAL SCREW POWER TESTING MACHIHB. The illustration which we give herewith is of aRiehle vertical screw power testing machine of 200,-000 lbs. capacity. It is a substantial and handsomelydesigned testing apparatus and combines the…
Railroads · Railroad cars
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