Improvements in and relating to Machines for Threading Pipes and the like
21,487. Borden, B., and Neracher, W. A. Oct. 6. Screwing. - Relates to machines of the kind described in Specification No. 22,832, A.D. 1901, for screwing pipes, the dies of the machine described being allowed to take the position of the pipe by reason of the machine being hinged on a horizontal piv...
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