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 302
eing used more and more to finish holes and evenfor slots and the outside of pieces of work. In most cases it is usedto change a round hole to a square or other shape, such as the fouror ten key ways used in automobile transmission. The chip cut by each tooth varies from o.ooi to 0.007 inch,… … The First Chip The Last ChipFig. I Section of Broached Hole undercuts 25 degrees, having top nearly flat. The distance betweenteeth varies according to the length of the hole being broached, thespacing being larger for long holes so as not to have too many teethengaged at once, three being a good…
Machine-shop practice
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-137-53.webp)
