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George Hall
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Publication of GB190424933ApublicationCriticalpatent/GB190424933A/en
24,933. Hall, G. Nov. 17. Locking washers and nuts.-In attaching doorknobs to spindles, one knob a, Fig. 1, is rigidly secured to a square spindle b, the opposite end b<1> of which is screwed. The other knob c is secured by a nut i, square-holed washers k<1>, k<2> and a lock-nut j. The fastening is concealed by a plain or screwed plug i'. In a modification, the washer k<1> is dispensed with, while the intermediate washer k' is made square as shown in Fig. 7, in order to lie in a recess i<1> in the nut i. In a further modification, projections on the washer k<2> engage recesses on the nut i. The nuts may be adjusted by a key engaging notches m.
GB190424933D1904-11-171904-11-17Improvements in Means for Securing Door Knobs and Handles to their Spindles.
ExpiredGB190424933A
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