The practical mechanic : comprising a clear exposition of the principles and practice of mechanism, with their application to the industrial arts (1887)
Drake, J. A · Philadelphia : J.W. Lukenbach · leaf 160
for the teeth of A, and serves for all tlie teeth in A— also for both sides of the teeth. In most practical cases the curvature of the teeth is described as a part of a circle, drawn from the centre of the next tooth, or fi"om a pt)int more or less above or bt'low that centre, or the radius greater…
Industrial arts · Technology · Workshop recipes
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
