center case; it is uneven and contains many scales and projecting made of wood; the upright being secured to the cross piece, lumps, which must be removed before the silk can be will bisect the angle of the fork. A square pointed center, twisted. This important process of cleaning consists simply… … CENTERING AND STEADYING TOOLS. being at the same time moved forward by the screw of the to form the thread. Three or more fibers, the number vary- ployed. It slips over the shaft and revolves in the steady engine rest until the rod turns smoothly in the fork and the rest. The bar is centered by the…
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