The principles of pattern making, written specially for apprentices and students in technical schools (1900)
Horner, Joseph Gregory, 1847-1927 · London, New York, Pitman · leaf 105
SECTION. Fig. 70. Core Box for Bevel Whee], 90 PRINCIPLES OF PATTERN MAKING. be as one, the carrier block can be lifted vertically,leaving the teeth behind, to be withdrawn in thehorizontal direction. Being made in this way, thedivision along the line a-a gives no extra trouble, butis really… … -a Fig. 71. Tooth Block for Helical Spur. bo rammed while the upper portion is temporarilyremoved. Though helical gears are true screw gears, they arenot marked out as portions of screws, but the helicalform is simply developed during the working through.The amount of angle of the teeth is that…
Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
