Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 128
ne ingear with the driving-shaft. Similar saws are used for squaring the endsof the iron rails for railways, two circular saws being fixed upon one axleat a distance apart equal to the length of the rails. The axle is driven atthe rate of about 900 turns per minute, and the iron rail is brought… … Fig. iZ.—Pit-Saw.
Inventions
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