pinion operated by a crank in thehands of the workman and streams of soda water are usedon the cutters and work to carry away the heat, as brassexpands rapidly under heat, and if the stack were cut dry THE MODERN CLOCK. 255 the cut would get deeper as the cutting proceeded, owingto the expansion of… … Fig. 82. Wheel Cutting Engine. order to clear the three arbors and engage with the shifterfor the index. The last wheel of the stack has a very largeburr formed by the cutters as they leave the brass and thiswheel is removed from the stack when the arbor is takenout and placed aside to have the…
Clocks and watches
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