Modern moulding and pattern-making : a practical treatise upon pattern-shop and foundry work, embracing the moulding of pulleys, spur gears, worm gears, balance-wheels, stationary-engine and locomotive cylinders, globe valves, tool work, mining machinery, screw-propellers, pattern-shop machinery, and the latest improvements in English and American cupolas ... (1907)
Mullin, Joseph P · New York : D. Van Nostrand · leaf 162
139 LARGE HOLLOW CASTINGS. tions and elevations of the centre, or body core-box. It is seen by the drawing, that the ends are made … Fig. 143. loose, and held in place by the screws C and the four ^" bolts shown at D. Fig. 144 When the core is made, and ready to lift from th^
Founding · Patternmaking
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from St. Nicholas [serial] (1873)](https://img.insideoutlibrary.com/img/200/ia-stnicholasserial321dodg-75-68.webp)
