Producing Metal Balls By Propelling Against An Anvil

Author:  Shelter
Source:  US Patent 2,758,360
Doc ID:  1956005
Year of Publication:  1956
Abstract:  
This invention relates to the production of steel shot or balls especially to small steel balls for use as shot in ammunition or shot gun shells and the like, or else for use as ball bearings, or for other purposes. The general object of the present invention is to provide a novel method of and apparatus for producing shot from steel wire. Another object of the invention is to provide a special controllable anvil in a shot producing machine to regulate the angle of impact of moving shot particles there-against. Another object of the invention is to provide a low cost method of providing accurately sized, round steel balls of any desired diameter. A further object of the innvention is to provide a relatively uncomplicated, substantially automatic apparatus for forming a cylindrical blank or pellet into substantially spherical shape by a controlled processing thereof. Another object of the invention is to provide a novel method of forming steel balls for bearings wherein a minimum of grinding or polishing operations are required on the balls for finishing same.