US2657507A

US2657507A - Gun hone

Info

Publication number: US2657507A
Application number: US273205A
Authority: US
Inventors: Clark E Seymour
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-02-25
Filing date: 1952-02-25
Publication date: 1953-11-03
Anticipated expiration: 1970-11-03

Description

Nov. 3; 1953 c. E. SEYMOUR 2,657,507

GUN HONE Filed Feb. 25, 1952 Fig.2 4

Clark E. Seymour INVENTOR.

I I BY ZWW$% Patented Nov. 3, 1953 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates in general to gun bones, and more specifically to hones for refinishing the barrels of shot guns.

The primary object of this invention is to provide an improved gun hone for use in refinishing tapered barrels of shotguns whereby the abrasive elements of the bones may follow the taper of the shot gun barrel.

Another object of this invention is to provide an improved gun hone which may be quickly and easily connected to a conventional electric drill and utilized for refinishing the barrel of a conventional shot gun.

Another object of this invention is to provide an improved gun hone for shot gun barrels which is of extremely simple construction Whereby the elements thereof may be quickly made and assembled so as to be economically feasible.

Another object of this invention is to provide an improved gun hone adapted for use in reconditioning shot gun barrels, said gun hone being provided with removable abrasive elements which may be quickly interchanged.

A further object of this invention is to provide an improved gun hone for shot gun barrels in which the abrasive elements thereof are urged outwardly by a longitudinally curved leaf spring which has limited engagement with the abrasive elements whereby the abrasive elements may follow the taper or choke of the shot gun barrel.

With these objects definitely in View, this invention resides in certain novel features of construction, combination and arrangement of elements and portions as will be hereinafter described in detail in the specification, particularly pointed out in the appended claim, and illustrated in the accompanying drawings which form a material part of this application and in which:

Figure 1 is a perspective view of the improved gun hone for shot gun barrels, the hone being illustrated connected to a drive shaft for rotating same, the abrasive elements of the hone being illustrated in their normal gun barrel engaging position;

Figure 2 is an enlarged longitudinal vertical sectional portion through the end portion of the shot gun barrel, the hone being shown in section and illustrating the relationship between the abrasive elements, their holder, and a spring for urging the abrasive elements outwardly and into engagement with the surfaces of the gun barrel;

Figure 3 is an enlarged top plan view of the gun hone of Figure 1, the abrasive element being omitted in order to show the relationship of the leaf spring with respect to an opening rectangular through the holder in which it is disposed; and,

Figure 4 is an enlarged transversely vertical sectional view taken substantially upon the plane indicated by the section line 44 of Figure 2 and showing the internal construction of the gun hone and the relationship of the abrasive elements with respect to the holder of the gun hone and the interior of the shot gun barrel.

different views of the drawings.

Referring now to the drawings in detail, it will be seen that the hone, which is the subject of this invention, is particularly adapted for use with a shot gun barrel and includes an elongated housing It which is circular in cross-section and has an elongated longitudinally extending opening extending transversely therethrough, said rectangular opening being referred to by the reference numeral l2. One end of the housing It is provided With an internally threaded bore I 4 extending longitudinally through said one end and communicating L with the opening l2. The end of the housing l0 provided with the internally threaded bore I4 is also provided with an enlarged annular shoulder l6 for reenforcing the end of the housing Ill. The other end of the housing 10 is provided with a centrally located bore 18 communicating with the opening I2 therethrough.

Partially disposed within the opening 12 are abrasive elements 20 and 22-, the abrasive elements being in the form of elongated substantially rectangular cross-sectional members. In order that the

abrasive elements

20 and 22 may be resiliently urged outwardly, the opening I2 is provided in the center thereof with a longitudinally curved leaf spring 24 whose central portion engages the inner side of the abrasive element 20 and whose end portions engage the inner side of the abrasive element 22. The end portions of the leaf spring 24 are bent upwardly in order to prevent frictional engagement with the abrasive element 22 and are referred to by the reference numeral 25.

Due to the novel manner in which the

abrasive elements

20 and 22 are mounted within the opening I 2 in the holder H}, the hone may be inserted within the bore of a shot gun barrel 28 and the abrasive elements 20 and 2-2 will automatically align themselves with the taper of the bore 30 of the shot gun barrel 28. In order that the hone may be rotated within the bore 30, an operating rod 32 having an enlarged threaded :cited objects and drawings.

end 34 may be threadedly engaged within the threaded opening M. The operating rod 32 may be rotated either manually or connected to a conventional portable electric drill in order to rotate the hone within the bore 30. It will be understood that the hone is reciprocated within the bore 30 of the shot gun barrel 28 while it is being rotated by the operating rod 32.

Since the

abrasive elements

28 and 22 have limited contact with the leaf spring 2t, they are permitted to closely engage the bore 3% and be at a slight angle to the longitudinal axis or" the hone and, therefore, are self-aligning. However, if too much pressure is applied on the operating rod 32 at angle to the longitudinal axis of the bore 3%, there will be a tendency of the housing H] to come out of alignment with the bore v 38. This may be partially eliminated by making the enlarged shoulder It of such a diameter that it will engage the bore 30 upon tilting of the housing 18 from alignment with the longitudinal axis of the bore 33. Since the abrasive elements 28 and :22 are oil stones, it may be desirable to apply oil to the interior of the housing it into the opening 52. Oil may be passed into the opening I2 through the bore it in the end of the housing I0 through the use of any conventional oil applicator.

It will be understood that the abrasive elements 2% and 22 may come in sets of various grits in order that the rate of honing may be controlled. It will be further understood that the purpose of the hone is to accurately hone out flaws, pits or other blemishes inside of a shot gun barrel.

The operation of this device will be understood from the foregoing description of the details thereof, taken in connection with the above re- Further description would appear to be unnecessary.

Minor modifications of the device, varying in minor details from the embodiment of the device illustrated and described here, may be resorted to without departure from the spirit and scope of this invention, as defined in the appended claim.

Having described the invention what is claimed as new is:

A self-aligning hone for refinishing shot gun barrels, said hone comprising an elongated operating rod, an elongated holder carried by said operating rod, a longitudinally extending elongated rectangular opening of constant cross section extending transversely through said holder, a pair of generally rectangular constant cross sectional bonded abrasive elements freely mounted within said opening, a single longitudinally curved leaf spring disposed entirely within said opening between said abrasive elements, said spring resiliently resisting movement of said abrasive elements within opening towards each other, said abrasive elements and said spring being free to move as a unit within and out of said opening whereby said abrasive elements may remain in even contact with a gun barrel, said abrasive elements and said spring being movable to a position at an angle to the longitudinal axis of said holder.

CLARK E. SEYMOUR.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,355,726 Zlatnik Oct. 12, 1920 1,523,649 Karstens Jan. 20, 1925 1,872,198 Rixel Aug. 16, 1932 1,965,128 Miller July 3, 193 i 2,147,387 Schwarz Feb. 14, 1939