US1614129A

US1614129A - Method oe and compound fob behoving from the barbels of fibeabms the

Info

Publication number: US1614129A
Authority: US
Publication date: 1927-01-11
Anticipated expiration: 1944-01-11

Description

Patented Jan. 11, 1927.

UNITED- STATES PATENT OFFICE.

WILLIAM HOSKINS, OF CHICAGO, ILLINOIS.

METHOD OF AND COMPOUND FOR REMOVING FROM THE BARRELS OF FIREARMS THE RESIDUES DEPOSITED BY LEAD BULLETS AND SMOKELESS AND SEMISMOKELESS POWDER.

No Drawing.

This invention consists in a'novel method of and compound for removing from the barrels of firearms the residues left after shooting in the firearms cartridges loaded with lead bullets and smokeless or semismokeless powder. The removal of the residues left by black powder cartridges and by smokeless cartridges containing jacketed bullets presents no particular difficulty atthe present time. The great difiiculty has however, been .experienced in the case of weapons, particularly those of small caliber, where the bullets are of lead and the powder is either smokeless or semi-smokeless.

In such weapons, the residue is a'mixture ofgrease from the bullet lubricant, a considerable quantityof lead from the bullets, and potassium chloride deposited by the primer. The latter is highly hygroscopic and causes after-corrosion unless removed. The lead is insoluble by ordinary cleansing agents and when mechanically mixed with the grease makes it extremely diflicult toclean the surface.

I employ a compound or mixture containing a soft abrasive, hard enough to cut lead but not hard enough to cut steel. My preferred compound contains tri-calcium-phosphate. With this I incorporate an emulsifying agent,- such as'liquid soap, which will emulsify and break up the grease, and water to dissolve the potassium chloride. In the use of this compound the barrel is scrubbed with one or two patches smeared with the mixture of soap, water and a soft abrasive, and is then scrubbed with a series 'of patches wet with water, or, in the alternative, water maybe either run thru the barrel or pumped in and out of the barrel,

Application filed January 3, 1921. Serial No. 434,761.,

using a cleaning-rod after the manner. of a syringe. The barrel is finally dried and covered with amoisture-excluding film of oil and grease, in which condition it is perfectly safe from after corrosion. I

v I preferably mix the aqueous solution of soap and tri-calcium-phosphate to the consistency of cream, because the abrasive has a tendency to settle out and in that condition. can readily be shaken up intothe mixture before using. Sucha cream may suitably be prepared by mixing 18 grams of trica'lcium-phosphate with 100 cos. of an aqueous solution containing 10% of potash soap. It must be understood, however, that this example is given by way'of illustration only and is not intended to be limitative components.

I claim: 1. The herein described compound for removing from barrels of firearms the residue from lead bullets and smokeless or semisince excellent results are obtainedwith com-Z smokeless powder comprising water, an

emulsifying agent, and an abrasive of the hardness of .tri-calcium-phosphate.

2.1Th'e herein described method of removing from the barrels of firearms the residue from lead bullets and smokeless or semismokeless powder, which consists in simultaneously subjecting the residue to the action of an abrasive hard enough to cut lead and not sufiiciently hard to materially cut the steel of the barrel, water, and an emulsifying agent, and subsequently washing and drying the barrel.

'WILL'IAM'HOSKINS.