The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)
Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 52
e move. This groove of the nutis termed the interior screw, and the elevations of the cylindermoving in this, the external screw. 33. Power is commonly applied to the screw by means of alever, either attached to the nut or to the head of the screw, asseen in Fig. 25. By varying the length of this,… … Of what machine is the screw a modified form ? How illustrated in case ofa cylinder and strip of paper ? Tluough what does the screw act upon theresistance ? Describe the screw-box or nut. How is power commonly ap-plied to the screw ? Where the lever is applied to the screw, state the…
Physics
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