A spur rack has a planar pitch surface and straight teeth that are at right angles to the direction of motion.
Read more about this topic: List Of Gear Nomenclature
Famous quotes containing the words spur and/or rack:
“We only seem to learn from Life that Life doesn’t matter so much as it seemed to do—it’s not so burningly important, after all, what happens. We crawl, like blinking sea-creatures, out of the Ocean onto a spur of rock, we creep over the promontory bewildered and dazzled and hurting ourselves, then we drop in the ocean on the other side: and the little transit doesn’t matter so much.”
—D.H. (David Herbert)
“The tender skin does not shrink from bayonets, the timid woman is not scared by fagots; the rack is not frightful, nor the rope ignominious. The poor Puritan, Antony Parsons, at the stake, tied straw on his head when the fire approached him, and said, “This is God’s hat.””
—Ralph Waldo Emerson (1803–1882)