Canadian foundryman (1921) . sand heaps. This is done with a sand-cutting machine, which will handle thedouble sized heap with practically thesame ease as it would the smaller one,but since adopting the system they findt>hat double piles of bottom boards leavemore freedom of action than single onesand all things considered the changewas a good one. NEW MECHANICALLY OPERATEDRIDDLE The Chicago Molding Machine Com-pany, 2028 North Major avenue, Chicago,are putting on the market what theyclaim is the first successful mechani-cally operated riddle, made in the United. JOLT RAMMING MACHINE. OPERA
Canadian foundryman (1921) . sand heaps. This is done with a sand-cutting machine, which will handle thedouble sized heap with practically thesame ease as it would the smaller one,but since adopting the system they findt>hat double piles of bottom boards leavemore freedom of action than single onesand all things considered the changewas a good one. NEW MECHANICALLY OPERATEDRIDDLE The Chicago Molding Machine Com-pany, 2028 North Major avenue, Chicago,are putting on the market what theyclaim is the first successful mechani-cally operated riddle, made in the United. JOLT RAMMING MACHINE. OPERATED BY ELECTRICITY. TROLLEY AND WALL TYPES OF MECHANI-CALLY OPERATED RIDDLE. States, and now being adapted to allclasses of work. It is niade in two types,one the wall type and the other thetrolley type, both of which are shownin the illustration. As will be seen,they are similar in many respects, theone hangs on the trolley, while the otherfastens against the wall. The device is especially designed tostand up under the abuse that foundryequipment is usually given. It can bemounted in a core room for mixing coresand, or for mixing facing sand for floormolders, over a tub in a brass foundry,against a brick wall, post or partition forstationary bench molders. It can alsobe bolted to the side of the Howe, Moline,Federal and other types of molding ma-chines using railroad rails or H beams. A notable feature is that it consistsof only four castings, a motor and twoautomobile bearings to make it complete. This should be an argument againstits getting out of order,
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfoundri, bookyear1921
