Patent
Impact device for marking, punching, stamping, forming, riveting and other related operations
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TLDR
An impact device for use in machines, such as presses, for marking, punching, stamping, forming, riveting, and other related operations, wherein a convex edged member such as a ball, axially separates a tool and a hammer, all moveable axially within a moveable spindle, is described in this paper.Abstract:
An impact device for use in machines, such as presses, for marking, punching, stamping, forming, riveting, and other related operations, wherein a convex edged member, such as a ball, axially separates a tool and a hammer, the hammer being loaded by compressible means such as a tension spring, all moveable axially within a moveable spindle. The ball is displaced radially into an adjoining magazine at the point of full extension of the spindle, after the tool is in contact with the workpiece, thereby allowing the spring loaded hammer to strike the tool, imparting an impact force to the workpiece.read more
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Automatic striking tool
TL;DR: A tool comprising an inner spring loaded hammer so disposed that by pressing this tool against an object a blow is delivered on a striking head forming the working end of the tool as discussed by the authors.
Patent
Spring loaded impact device
TL;DR: In this article, a spring-actuated tool comprising a spring 5 compressed by downward movement of an outer shell 2, and a striker 4 impelled by the spring on to an anvil 1 on the tool holder 1, the striker is held inoperative during downward movement by balls 8 running along inclined channels 10 in the striker and engaging the end 1 of the holder.