. The Street railway journal . The ColumbiaLock Nut A Positive Lock, as well asan Improved Nut of Uni-versal Application VIEW OF NUT ASSEMBLED SOME OF ITS SPECIAL ADVANTAGES It is a device automatically fastening both bolt and nut abso-lutely. It is a binding lock nut of immense power, because the greater the strain the firmer the does not injure the bolt and will never slack back or work loose. No washer of any kind is required. It will straighten the threads of an abused bolt, thus avoidingthe necessity of recutting the threads. It does not require exact size or taper bolt, because i
. The Street railway journal . The ColumbiaLock Nut A Positive Lock, as well asan Improved Nut of Uni-versal Application VIEW OF NUT ASSEMBLED SOME OF ITS SPECIAL ADVANTAGES It is a device automatically fastening both bolt and nut abso-lutely. It is a binding lock nut of immense power, because the greater the strain the firmer the does not injure the bolt and will never slack back or work loose. No washer of any kind is required. It will straighten the threads of an abused bolt, thus avoidingthe necessity of recutting the threads. It does not require exact size or taper bolt, because it readilyreceives full or scant diameter bolts. No springs, jamb nuts, dogs, palls, slots, pins, or other extradevices necessary, because it is a unit fastening. It is more effective than double nuts and stronger than rivets. It can be placed in any position, and can at any time be re-moved without special tools. It never diminishes its grip in expansion and contraction ofmetals. COLUMBIA LOCK NUT CO., Incd. Patentees and Manu
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
