Ä¢¹½´«Ã½

Access rights only. This is a handout or public domain image supplied by a third party. Ä¢¹½´«Ã½ grants access to the digital file but provides no warranties regarding copyright or moral rights. Alteration, modification, or cropping is prohibited without prior approval. All commercial uses require advance authorization from the content provider.

This image could have imperfections as it’s either historical or reportage.

. Electric railway journal . Grip Nuts After New Fieldsto Conquer Seventy-five per cent, of the railroads now use grip nuts onlocomotives, cars, frogs and crossings, on points of applicationsubject to greatest vibration, with entire satisfaction. GripNuts can be reapplied without injury to the threads of the bolt. The Reason Grip Nuts Lock Each bar of steel has an arch running through the center ofit. This nut is blanked out and threaded through this arch, after which it is accurately gauged, then deflected by pressureupon the crown of the arch by automatic machinery, thus pro-ducing a locking friction upon the threads, as shown in the illus-tration. The thread deflection in Grip Nuts has been made with scien-tific precision before leaving the factory. Each nut is gauged todetermine its thickness so that the deflection in the threads isabsolutely uniform at ail times. They are all ready to wrench inplace and will lock upon a bolt as soon as all the threads of theGrip Nut are engaged. They do not require to be jamm