A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams (1829)
Curtis, Thomas, fl. 1820 · London : Thomas Tegg · leaf 360
which racks are fixed to the cutter-headII, and revolve with it. The volocity with whichthe cutter-head is impelled along the cylinder,depends upon the number of threads of tfiescrew in a given length, and on the proportionsof the wheels A, C, D, and E, to each other.By varying the velocity of the… … M It.trr II. j^OltilNO,. Wniir /hlhii/. FiaJO. Iu/-7. Fio. a. Fi,7.1.^. i
Encyclopedias and dictionaries · Aeronautics
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