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Harry Robert Betts
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Individual
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Individual
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Details Of Spanners, Wrenches, And Screw Drivers And Accessories
(AREA)
Abstract
18,216. Betts, H. R. Aug. 5. Locking nuts.-The nut A<1> has a spring catch C pivoted to it, the tooth E of which engages with a longitudinal groove B shaped as shown. The pawl rides out of the groove when the nut is screwed up in the direction of the arrow; but the catch has to be pressed down for unscrewing.
GB189718216D1897-08-051897-08-05Improvements in Locking Bolts and Nuts.
ExpiredGB189718216A
(en)