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Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 29

An illustration from Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary, 1917, leaf 29
Strain 24. THK WEDGE. Strain = force of blow X / w /, length of wedge.Wf width of wedge. … 25. THE SCREW. All measures in equalunits or inches. W = PX (2 X rX 3.1416)Pitch of screw P = W X pitch of screw2 X rX 3.1416 : h- ii^- 26. WORM GEAR or ENDIvESS SCREW. P = power.r = length of crank.R = radius of pitch line of gear.p = pitch of screw.r = radius of winding drum. W = PXrX6.28XRpXr P…

Mechanical movements

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