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Expired
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Ethelred Walter Treatt
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Individual
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Individual
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Publication of GB190420426ApublicationCriticalpatent/GB190420426A/en
20,426. Treatt, E. W. Sept. 22. Locking nuts.-The coned part b of the nut a has a number of slits c, and is engaged by the concave base of the nut e, causing the coned part to grip the thread of the bolt f. Fig. 11 shows a modification in which the nut a has an outer rim j, to conceal the coned part b.