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Making a Good Shooting Barrel | |
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 Making a Good Shooting Barrel
To insure good shooting the barrel must be kept free from dents and thoroughly clean. A frequent use of the Hotz gun barrel reliever is commended. This is a simple device by means of an expanding rod and tube to force indented portions outwardly. In the drawing 1 shows the expander rod and tube screwed together. 2 is a perspective view, showing part of the device. 3 is a longitudinal section showing the gun barrel with the device in operation, the gun barrel being represented by the dotted lines. The expanding tube is constructed in semi-cylindrical sections, which are provided at their ends with a threaded bore communicating with a reduced bore, which are connected by two spring sections secured to a handle. The expander rod at its upper end is provided with an operating handle. The lower end of the expander rod terminates in a conical tip, surmounted by a reduced plain surface, above which a threaded surface is formed. In operation the expanding tube is inserted in the gun barrel with the semi-cylindrical sections opposite the indentations to be removed. The expander rod is then entered at the opposite end of the barrel, and the tip of the rod is inserted in the tube until the threaded surface of the rod engages the threaded bore of the tube, thus causing the reduced plain surface of the rod to engage the smooth bore of the tube and force it outwardly against the depressed portion of the barrel.
Farrow, Edward S. American Small Arms; a Veritable Encyclopedia of Knowledge for Sportsmen and Military Men. New York: Bradford, 1904. Print.
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