Mellor's patent lock nut and bolt

D. Halpin's patent

1879

Two Vislok Patent Safety Lock Nuts

Terry's patent 1908 (no.11804) coil friction type locknut

1908

Bevan's patent 1908 Locknut

1908

Bevan's patent 1908 Locknut

1908

"Otter" Lock-nut for 1" diam. bolt

Vibro Lock Nuts

Turret lock-nut

Bevan's patent 1908 Lock-nut, double roller type, for 1" diam. bolt

Ibbotson's patent lock nut (2 saw cut across top) viz:- 1 nut 1" diam