Improvements in machines for projecting sand and like material for making cores, sand-blasting and the like

摘要

565,260. Sand-blast. COGGON, H. F. June 25, 1943, No. 10331. [Class 60] [Also in Group XXII] A sand-blast or like machine having a container from which sand is projected has an outlet pipe b of rubber, canvas, &c. that can be closed by pressing the walls. This pressure may be applied by a pneumatic piston d acting on a movable jaw e. The pipe is supported at each end by its flanges b1.