US360879A

US360879A - Manufacture of table-knives

Info

Publication number: US360879A
Authority: US
Publication date: 1887-04-12
Anticipated expiration: 1904-04-12

Description

w (No Model.) 2 Sheets-She't 1.

- H. 0. HART. a

- MANUFACTURE OF TABLE-KNIVES! No. 360,879. Patented Apr. 12,1887.

W722 flw mm UNITED STATES PATENT OFFICE.

HUBERT O. HART, OF UNIONVILLE, CONNECTICUT.

MANUFACTURE OF TABLE-KNIVES.

SPECIFICATION forming part of Letters Patent No. 360,879, dated April 12, 1887. Application filed March 3, 1886. Serial No. 193,829. (No model.)

To all whom it may concern.-

Be it known that I, HUBERT O. HART, residing at Unionville, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Knives; and I do declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to an improvement in table-knives, the object being to produce a well-balanced article havingdesirable lines at a comparatively light expense.

'M'y invention further comprehends amethod of making table-knives, consisting in boring out one end of a blank and then closing the month of the bore in dies to form the handle of the knife, and flattening and trimming the other end of the blank to form the blade of the knife.

My invention further consists in certain steps in the method, as will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a View in side elevation of a section of steel rod suitable for the formation of a knife-blank under my invention. Fig. 2 is a view in transverse section of such rod, on the line to w of Fig. 1. Fig. 3 is a view in side elevation of a knife-blank suitable for carrying out my invention. Fig. 4 is a view in transverse-section of the larger end of such blank, on the line or x of Fig. 3. Fig. 5 is a View, partly in section and partly in elevation, of such blank, showing its larger end bored out. Fig. 6 is a view in transverse section through the bored end of the blank, on the line 3 y of Fig. 5'. Fig. 7 is a View in side elevation of the blank after the bored end thereof has been flattened and closed to form the hollow handle of the knife, and also after the neck of the knife has been formed. Fig. 8 is a view in end elevation of the handle of the knife. Fig. 9 is a view in transverse section thereof on the line 00 w of Fig. 7. Fig. 10 is a view'in side elevation of the blank after the handle and neck have been formed and after the smaller end of the blank has been flattened, as by rolling. Fig. 11 is a similar view after the said flattened end of the blank has been trimmed, and showing the completed knife. Fig. 12 is a view in vertical longitudinal section of one form of dies which may be employed for closing the mouth of the bore, flattening the bored end of the blank, and forming the neck of the kn fe; and Fig. 13 is a face view of one of the dies shown in the preceding figure.

The section A, of round steel rod, contains the required amount of stock for a knife made under my invention. Preferably, such a section of rod is employed in the formation of the shouldered tapering blank B, the larger end of which is bored out to form the cavity 0, asshown. After boring out the said end of the blank the bored portion, whlcn is circular-in transverse section, is drop-forged in dies adapted to flatten it and form the hollow knife-handle E, which is elliptical in transverse section, to close the month of the bore by drawing it together, as at F, and to form the neck G of the knife. The smaller end, H, of the blank is now flattened, as at I, under rollers, or-otherwise, and trimmed in dies to form the blade J of the knife.

The dies K and L herein shown are of full size, and each is provided with a matr x having the form of half of a completed knife, the inclined walls M of such matrices operating to draw together and close the mouth of the bore, the blank being respectively flattened and shaped to form the neck of the knife by the parts N and O of the matrices Having fully described my invention, what I claim as new, and desire to secu re by Letters Patent, is- I 1. A method of making table-knives, consisting in forming the knifehandle byboring out one end of a blank, and then closing the mouth of the bore by drawing it together in dies, and in forming the knife-blade by flattening and trimming the other end of the bl k in dies, substantially as set forth.

2. A method of making table-knives, consisting in forming the knife-handle by boring out and flatteningone end of a blank,and closing the mouth of the bore by drawing it together in dies, and in forming the knife-blade by flattening and trimming the other end of the blank in dies, substantially as set forth.

3. A method of making table-knives, consisting in forming the knife-handle by boring In testimony whereof I have signed this out one end of a blank, and closing the mouth specification in the presence of two snbserii 10 of the bore by drawing it together in dies, in ing witnesses. forming the knife blade by flattening and trimming the other end of the blank in dies,

and in forming the knife'neck by subjecting Witnesses:

the blank to the action of dies, substantially O. H. BROOKS, as set forth. HENRY A. Cowtns.

HUBERT C. HART.