US368061A

US368061A - Heney a

Info

Publication number: US368061A
Authority: US
Publication date: 1887-08-09
Anticipated expiration: 1904-08-09

Description

Patented Aug. 9, 1887.

Jig. 5. 'l

H. A. BROGNARD. MANUFAUTURE OF- CUTLBRY QR SIMILAR ARTICLES. No. 368,061.

(No Model.)

WITNESSES:

UNITED STATES PATENT OFFICE.

HENRY A. BROGNARD, OF PHILADELPHIA, PENNSYLVANIA.

MANUFACTURE OF CUTLERY OR SIMILAR ARTICLES.

SPECIFICATION forming part of'Letters Patent No. 368,061, dated August 9, 1887.-

Application filed June 12, 1886. Serial No. 204,916. (No model.)

To all whom it may concern:

- Be it known that I, HENRY A. BROGNARD, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, haveinvented a new and useful Improvement in the Manufacture of Knives, Forks, or other Articles of Hardware having Hollow Handles, which improvement is fully set forth in the following specification and accompanying drawings.

My invention consists of an improved method of forming hollow-handled cutlery and of welding the hollow handle to the part attached thereto,whereby better and more uniform results are obtained.

The invention will be hereinafter described as applied to themanufaeture of knives.

Figure 1 represents a piece of metal from which a blank is made. Fig. 2 represents said blank, the same being designed for making the blade of a knife. Fig. 3 represents the blank and hollow handle assembled together and placed in the lower die of a pair of dies. Fig. 4 represents a side elevation of the united head and handle after the welding and forming have taken place. Fig. 5 represents a side elevation of the finished knife. Fig. 6 represents a side elevation of the blank, Fig. 2. Fig. 7 represents a side elevation of a modification of a knife-blade blank. Figs. 8 and 9 represent end views of head or blade pieces.

Similar letters of reference indicate corresponding parts in the several figures.

Referring to the drawings, A represents a piece of steel from which the knife-blank A, Fig. 2, is made, said blank having the end B turned or otherwise formed to fit the bore of an iron or steel tube, D, and at a short distance from the end a collar or bolster, G. The end B of the blank is inserted into the tube D, the two parts being assembled as shown in Fig. 3 and placed in the die E, the collar 0 resting against the edge of the tube D. Prior to location of the parts on said die the blanks are heated to the requisite temperature. The upper die is similar to the lower die and omitted at this time; The face of the dies have suitable depressions or recesses,a c d, and projections b. The recesses a receive the tube or hollow handle D and the recesses 0 receive the collar 0. The projectionsb correspond very nearly to the edge or end of the tube D at its point of contact with the collar or bolster C. When the dies E close, the edge of the end of the tube D is pressed with great force into the end B of the blank A by the action of the projections b,while the collar or bolsterO and tube D are held in their respective recesses and prevent the metal from spreading longitudinally. The hot metal of the two blanks is thus forced into one solid weld while the handle D and the bolster C are formed. After having been pressed through the dies the knife presents the shape shown in Fig. 4. The blade is afterward forged and the knife ground and finished.

It will be seen from the foregoing description of the welding process that I have selected as the point of welding the part of the knife between the bolster and the handle where the diameter is greatly reduced. By placing the line of weld at that point the projections b provided in the dies act really as fullers, and

thus thoroughly press and unite the two parts In the foregoing description I have shown the importance of selecting the neck of the knife next to the bolster as the point where the hollow handle and the other part of the knife should meet and be welded together to insure the best quality and uniformity of results.

I do not claim to have invented, broadly, a method of forming and welding a hollow handle to a knife by means of dies, as I am well aware that the samehas been done before; but

\Vhat I do claim as new, and desire to se cure by Letters Patent, is-

1. The tube or hollow cylinder and the solid head 'or blade piece having a bolster formed thereon, assembled together so that the portions of the tube and blade-piece at the point of weld will constitute the portion of the de-