American School of Correspondence · Chicago, American school of correspondence · leaf 142
Q beK ^ < 3u 3 ^=« 2 ?: i-i o o > COTTON SPINNING. 85 The wire teeth of the flats and cylinder require grinding, fromtime to time, owing to their becoming dulled on the points, and,as the grinding operation shortens them slightly, the space betweenthe wire surfaces is increased. In order to… … as the grinding also affects each of the flats, it will be understoodthat they must be lowered, bodily, to the same extent towards thecenter of the cylinder. This is accomplished by changing the radiusof the flexible bend. The most common form of device for changing the radius is i2d 86 COTTON…
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