253 (#331) ############################################ PRINCIPLES AND PRACTICE Up to the present mechanical doffing has only been applied to the Flyer and Cap frames, and as the former presented fewer difficulties it has been tackled first. RAFO avec Fig. 73a.--Section of the Arnold-Forster Mechanical Doffer (Made by Messrs. Hall and Stell) Mr. Percy Clough's flyer doffer was certainly one of the first, and it is interesting to note that it is still running. It probably owes its success to the fact that it modifies nothing in the normal flyer frame, 253
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