Appleton's dictionary of machines, mechanics, engine-work, and engineering . effected by transverse wedges in the steady-pins of the flasks, and the internal mass of sand is retained firmly, or gagged, by means of lifters, orT-shaped pieces of iron, with wedge-shaped tail, and set head downwards. These gaggers are placedin various parts of the flask, according to the objects to be moulded, and the discretion of the founder. The following figures, showing the pattern and mould for the top of a sliding-rest for a lathe, willillustrate the application of a three-part flask. The pattern, Fig. 2383
Appleton's dictionary of machines, mechanics, engine-work, and engineering . effected by transverse wedges in the steady-pins of the flasks, and the internal mass of sand is retained firmly, or gagged, by means of lifters, orT-shaped pieces of iron, with wedge-shaped tail, and set head downwards. These gaggers are placedin various parts of the flask, according to the objects to be moulded, and the discretion of the founder. The following figures, showing the pattern and mould for the top of a sliding-rest for a lathe, willillustrate the application of a three-part flask. The pattern, Fig. 2383, might be moulded in a two-part flask of sufficient depth by making theparting along the dotted line a a; and indeed there are several ways in which it might be cast, but theone shown will be seen to be the most convenient. The chamfer at c might also be cast, either bymoulding square at first, and then filling in sand and working it to a gage, or by means of a corewhose print is shown in the dotted lines terminating at 6; but the most usual and the best way is to
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
