GB186227A - New or improved means of moulding baths, and other light castings - Google Patents

Abstract

186,227. Fleming, D. Aug. 18, 1921. Moulds; flasks; moulding processes. - A process of moulding is described with reference to baths. The pattern is placed on a moulding. beard D, Fig. 2, having an inclined surface F leading to the roll of the bath to avoid the formation of a special parting surface. The centre flask part, that has perforated sides is placed in position and sand is rammed at the sides of the pattern, a gauge ring or false flask is placed above to measure sand to cover the bottom of the bath. The gauge is removed and the sand is rammed by applying and cottering down the top part A. which has a knife-edge contact at H with the centre part. After reversal the moulding-board is removed, the inside of the pattern is filled and rammed, a second gauge ring is applied and sand filled in, the gauge is removed and the roll of the bath is rammed by applying and cottering down the bottom part E, Fig. 5, which has a series of small vents m extending round the roll and large vents n, and P for the part of the mould forming the interior of the bath. After a second reversal the centre and top parts and pattern are removed from the bottom part, these parts are reversed and the pattern removed, after which the parts are assembled and arranged for pouring by a corresponding series of steps. An ordinary runner box is applied. Guiding flasks.-The bottom part is notched at M at diagonally opposite corners for guiding purposes.