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James Barbour
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Individual
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Individual
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Publication of GB189912799ApublicationCriticalpatent/GB189912799A/en
12,799. Barbour, J. June 20. Locking set-screws.-The grub screw 2, for fixing the collar 6 to the rail 9 of a spinning-frame or for fixing a door handle to its spindle &c., is locked by a second screw 1 fitting into the same hole. The screw 1 has a sharp point, to enter the nick of the screw 2 and thus expand it.
GB189912799D1899-06-201899-06-20Improvements in the Method of and Means Employed for Locking or Fixing Screws.
ExpiredGB189912799A
(en)