Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 145
he headstock for this purpose. This stud is geared tothe spindle, and the ratio of this gearing must be considered- whencalculating the gears for screw-cutting. For example, suppose wewish to cut twelve threads per inch in a Lithe having a lead screwwith eight threads per inch and a ratio of two to… … 157. 123 108 MACHIXE SHOP WORK. Tlie first gear is not attached to the spindle, but to the stud,which makes six revolutions to twelve of the spindle. Therefore,the ratio between the stud and the lead screw, where the gearsare actually applied, must l)e 6 to 8. Multiplying hy 6 will give30 and 48 as…
Mechanical engineering
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