US372152A - Necticut - Google Patents

Description

(No Model.) I

. H. G. KELSEY "81; H. A'.-HARTSHORN.

MECHANISM FOR FORMING BUGKLE- TOINGUES. No. 372,152. Patgnted Oct. 25, 1 887.

' NITED STATES PATENT. Critics.

HO RATIO G. KELSEY AND HENRY A. HARTSHORN, OF. WEST HAVEN, CON- NECTICUT, ASSIGNORS TO THE AMERICAN BUCKLE AND CARTRIDGE COMPANY, OF SAME PLACE.

MECHANISM FOR FORMING BUCKLE-TONGUES.

SPECIFICATION forming part of Letters Patent No. 372,152, dated October 25, 1827.

Application filed July 5, 1887. Serial No. 243,339. (No model.)

To all whom it may concern:

Be it known that we, HORATIO G. KELsnY and HENRY A. HARTSHORN, of West Haven, in the county of New Haven and State of Connecticut, have invented a new Improvementin the Manufacture of Buckles; and we do hereby declare the following, when taken in connec tion with accompanying drawings and the letters of reference marked thereon, to be a full,

to clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a top or plan view of the active portions of the machine; Fig. 2, a horizontal I 5 section through the side benders and former in the plane of the tongue portion of the buckle on the former; Fig. 3, the tongue complete as formed by the machine; Fig. 4, the workingface of the side benders; Fig. 5, the workingface of the former.

This invention relates to an improvement in that class of buckles for wearing-apparel in which the buckle is composed of two partsa frame and a tongue portioneach part made from wire, the tongue portion bent to form the loop, and the ends of the frame bent around the inner side of the loop to form the hinge, and such as commonly known as the Hartshorn buckle, and such as patented to Hartsgo'horn July 10, 1855,-No. 13,218.

In this class of buckles it is necessary that the engaging ends of the tongue shall be brought to a sharp point, or nearly. so. Heretofore this has been done in some cases by grinding, in othercases by rotating hammers, and in other cases by squeezing the point ends between dies, which throw the surpl us metal onopposite sides of the point end in the form of fins. Then the fins are cut 0d and the point 40 finished by tumbling or otherwise; but in either case the operation adds considerably to the cost of manufacture, which it is the object of our invention to avoid. The tongue portion of the buckle is represented inFig. 3.

This part of the buckle is made from wire bent into the required shape to form the two tongues .a a on one side of the loop A. To bend the blank, a former, B, (see Fig. 1,)

formed point upon the end of the wire, and as stands vertical, and whichin transverse section correspondsin shape to the inside of the tongue part of the buckle.

Crepresents thepreliminarybender,adapted to reciprocate toward and from the former, as indicated in broken lines, Fig. 1.. On the face of the bender a recess is formed corresponding, substantially, to the outside of one half the loop portion of'the buckle. The wire is fed in between the former and the preliminary bender C, as indicated in Fig. 1, and cut off to the proper length. Then the bender C advances toward the former and turns the two ends onto the former, bringing the blank into U shape, as indicated in broken lines, Fig. 1. Then side benders advance and complete the loop, leaving the tongues projecting at right angles to the loop. 1

Instead of cutting off blanks from the wire at right angles, I make a diagonal cut, as indicated at b, Fig. 1. This leaves a partiallythe Wire advances the required distance another like diagonal cut is made, severing the blank from the body of the wire and leaving it between the bender and former, as seen in Fig. Theinclination of the two ends of the blank are opposite each other because of the diagonal out made,.as before described. The blank thus introduced is first bent by the preliminary bender C, as before described and as seen in Fig. 1.

D D represent two side benders, the face of which corresponds to the side of the former, and so that as the two advance upon opposite sides of the former they force the end portions inward and bring the ends of the blank parallel with each other and at right angles to the loop, completely forming the loop, as seen in Fig. 2. The faces of the two bending-dies D D have a cavity formed therein, as seen in Fig. 4, the cavity running to a sharp point corresponding in position to the point end of the blank. The former also has a corresponding recess upon its side, as seen in Fig. 5. As the two side benders,D D,advance, the cavity therein is brought onto the respective ends of 5 the wire, and because of the point shape they bring the partiallyformed point of the ends into a completely-shaped point, as indicated in- Figs. 2 and 3.

Because of the diagonal cut made, as before described, in severing the blank from the body of the wire, there is no more metal left upon the point end of the blank than is required for its propershaping, the obliquity of the out be in g made with due regard to the metal required for so completely forming the point.

By this method of forming the point the operations hitherto required for this purpose-- such as before describedare avoided, the points being formed complete in the operation of bending-that is to say, in bending the tongue portion of the buckle precisely the same action of the dies is required as that which we have described; but by forming the point cavities in the respective bcnders the point is produced without additional operations over that which is necessarily required in bending the blank to shape. Alter the blank has been thus completed itis forced from the former by the stripper in the usual manner.

Ve have not shown the machine complete, as the mechanism for operating the respective slides which carry the preliminary bending-die and the side benders, as well as the stripper, are common and well known and do not require illustration, it only being necessary to say that a reciprocating movement is imparted to the preliminary die and to the side benders toward the former, such movementbeing timed for the introduction or feed of the wire,which is also produced in the usual manner.

The diagonal cut is produced by cutters the cutting-edge of which is oblique to the line of the wire, as indicated at E, Fig. 1, which represents one of the cutters, the cutters being substantially the cutters employed in machines for this purpose, excepting in the diagonal position.

\Ve claim- The herein-described improvement in machines for manufiacturing buckle-tongues, substantially such as described, consisting in the combination of the stationary former B, its shape corresponding to the interior of the tongue part of the buckle, a cutter the cuttingedge of which is oblique to the line of wire fed to the machine and whereby obliquely-cut points are formed on the blank, the reciproeating preliminary bender O, and the reciprocating side benders, DD, the said side bender-s having cavities in their face terminating in point shape for the point end of the blank, substantially as described.

HORATIO G. KELSEY. HENRY A. HARTSHORN.

\Vitnesses:

Farmers N. STERNS, \VILLIAM B. PLACE.

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