Firearm barrel inner diameter testing assembly

Details Firearm barrel inner diameter testing assembly Firearm barrel inner diameter testing assembly

1990-07-24

1993-01-05

Williams, Hezron E.

Measuring and testing

With fluid pressure

Dimension, shape, or size

G01B 1308

Patent

active

051760240

ABSTRACT:
An assembly for testing the inner diameter of a rifled barrel of a firearm and a method of manufacturing the same. The assembly has a frame with side air discharge apertures and is intended to be connected to an air gauge. The assembly has a timing sleeve that is removably mounted to the frame such that the sleeve can be replaced when it becomes worn or when the assembly is intended to be used with a barrel having a different type of rifling. The assembly also comprises a wear ring such that the wear ring and timing sleeve absorb abrasive contact in the barrel to reduce abrasive contact by the barrel on the frame.

REFERENCES:
patent: 2802276 (1957-08-01), Straw
patent: 4367646 (1983-01-01), Allen, Sr. et al.

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