Canadian foundryman (1921) . olling over, squeezing, and patterndrawing, as its hand and foot operatedpredecessor. Mounted patterns are attached to thecradle of the machine by hook bolts en- A double-end foot lever at the front ofthe machine starts and stops the joltmotion by a clutch on the cam disc shaftat the rear. Large adjustable counterbalance the weight ofthe cradle and load to any extent powerful expansion spring adds im-petus to the jolt and prevents whippingor rebound. Rolling over the mold is an operationconsisting first of raising the cradle bypower a suit
Canadian foundryman (1921) . olling over, squeezing, and patterndrawing, as its hand and foot operatedpredecessor. Mounted patterns are attached to thecradle of the machine by hook bolts en- A double-end foot lever at the front ofthe machine starts and stops the joltmotion by a clutch on the cam disc shaftat the rear. Large adjustable counterbalance the weight ofthe cradle and load to any extent powerful expansion spring adds im-petus to the jolt and prevents whippingor rebound. Rolling over the mold is an operationconsisting first of raising the cradle bypower a suitable distance, then releasingits heavy locking pin and giving it a halfturn by hand from the position shown inFig. 3 to that in Fig. 4. The table lifting motion is controlledby the clutch lever at the left end of themachine. It operates by sprocket andchain connection from the motor counter-shaft to a pair of pinions which are eachin engagement with a novel heart-shapedcrank head surmounting each of the two arrtfft * ??%.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfoundri, bookyear1921
