Scully blue book: catalogue of iron, steel, machinery, heavy hardware, tools and supplies, with valuable and accurate reference tables (1910)
Scully Steel & Iron Co. · Scully Steel & Iron Co. · leaf 180
ndforging machinery. The motor cylinder is controlled by a portablehand or foot valve flexibly connected thereto by armored hose of smalldiameter. The cut above shows one of these devices connected to one of ourstandard punches. A saving of from $400 to $700 annually on each toolcan be made by… … Hand Valvl Saving. It saves the labor of one manto each machine to which it is attached, re-ducing cost of labor, from 25% to 45%. Thevalve piston travel is only % inch. Centers Responsibility. It centersthe responsibility for good work upon oneman, and saves the time lost in signaling toa helper,…
