Pattern making and foundry practice; a plain statement of the methods of wood pattern making, as practiced in modern pattern shops, with complete instructions for sweep work and notes on foundry practice, together with numerous drawings taken from actual patterns .. . To make a mould for Fig. 63 with this set ofsweeps, the floor of the foundry is first leveledoff and a stake driven down, leaving enough. Try G3 above ground to operate the sweep. The firstsweep is then put on, the sand packed about thestake and a hill is formed representing the out- AND FOUNDRY PRACTICE 107 side of the casting.
Pattern making and foundry practice; a plain statement of the methods of wood pattern making, as practiced in modern pattern shops, with complete instructions for sweep work and notes on foundry practice, together with numerous drawings taken from actual patterns .. . To make a mould for Fig. 63 with this set ofsweeps, the floor of the foundry is first leveledoff and a stake driven down, leaving enough. Try G3 above ground to operate the sweep. The firstsweep is then put on, the sand packed about thestake and a hill is formed representing the out- AND FOUNDRY PRACTICE 107 side of the casting. When complete, a parting ismade and the cope placed in position andrammed up. Gates are then made and the coperemoved. The second sweep is now substitutedfor the first and the sweeping continued until aperfect form is produced of the inside of thecasting. Now the sweep is removed, the copeplaced in position and the mould is complete.
Size: 2228px × 1122px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicagofjdrakeco
