American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions (1914)
Colvin, Fred H. (Fred Herbert), 1867-1965, Stanley, Frank A. (Frank Arthur), b. 1874 · New York : McGraw-Hill book company ; London : Hill · leaf 70
A = .G9xPitchB = .3Ix Pitch.C = VlO ofT£ = .C9xPitch=AJ = .3683xPitcn S=.368SxKtchT = .5 X Pitch~W=.31 X Ktch=I■W.D=.7366x.Htcli … D =Diam. of Worm + !L = WD + i^inohWD=.7366xHteh Fig. 18. — Section of Hob Thread Fig. 19. — End View of Hob The diagram Fig. 18 shows the shape and proportions of the threadof a worm hob, and Fig. 19 shows the proportions for the depth oftooth, the lead and the oulside diameter. In these diagrams:…
Machine-shop practice
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.
