US429095A

US429095A - livingstone

Info

Publication number: US429095A
Authority: US
Publication date: 1890-05-27
Anticipated expiration: 1907-05-27

Description

(No Model.) 4 Sheets-Sheet 1.

W. LIVING-STONE. METHOD OF MAKING METALLIC FENCES.

No. 429,095. I Patented May 27, 1 890.

6 law 6041mm: J 5/237? (No Model.) 4 Sheets-Sheet 2. W. LIVINGSTONE.

METHOD OF MAKING METALLIO FENCES. No. 429,095. Patented May 2'7, 1890.

(No Model.; v 4 Sheets- Sheet 3.

W. LIVIN ONE.

. METHOD OF MAKING TALLIG FENCES.

N0.'4Z9,095. Patented May 2-7, 1890.

ifiwmmw STATES PATiiN'l Orrittzn.

-WiLI iAM}LIvI cs'roNn, on .ncasnv crrv, new .ntnsnv, Assnmon w ONE-HALF 'ro JOHN "coornn, on NEW ronk, N. v,

' METHOD OF MAKiNe METALLIC FENCES.

SPECIFICATION forming part of Letters Patent no. 429,095, dated May 27, 1890. Application filed Deceinlier 2, 1889. Serial a. 332,318. (No model.)

To all whom it may concern.-

Be it known that I,W1LL1AM LIVINGSTONE, of Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Metallic Fences; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to-which it. appertains to make and use the same.

My invention relates to an improvement in the manufacture of metallic fences and similar structures, and has for its object to produce a fence made in sections of single pieces of sheet metal stamped, drawn, and formed to produce the desired configuration.

\Vith this object in View myinvention consists in certain steps in the process of producing a fence from sheet metal andin the productproduced by such method.

In the accompanying drawings, Figure 1 is a view of a sheet-metal blank of which a section of the fence is to be made. Fig. 2 is a view of the same after it has been cut and slitted. Fig. 3 is a view of a complete section of fence. Fig. 4 represents a section of fence formed from a blank cut and slitted the same as shown in Fig. 2, but with different forming-dies. Figs. 5, 6, 7, and 8 are Views illustrating modifications.

In carrying my invention into effect a suitable machine will. ,be provided with cutting and slitting dies and the sheet-metal blank, Fig. 1, subjected thereto.

'It is obvious that thecutting-dies by means of which the picket-hez'tdsare produced may be of a form to produce any desired design, and that the dies which producethe slits that are afterward opened to produce ornamentations in the body of the fence may be differently arranged, as may suit the fancy of the manufacturer, .to effect different designs; but for convenienceofillustration reference will be first had to the form or design illustrated in Figs. 2 and 3.

The sheet-metal blank A is inserted into the machine and the cutting-dies operated upon it to produce the picket-heads 13. Simultaneously with this operation, or by a separate operation of the'machine, the slitting-dies are brought down upon the blank and slits l 2 53 produced. The slits 1 are lucatcd cent rally between the picket-howls and, starting from the base of said heads, terminate at points just above the center of the blank. The slits 2, beginning at points just below the horizontal center of the blanknnd in the same vertical plane with the slits I, extend to the lower edge of the blank. The slits 3, Fig. 2, begin at points near the base of the heads of the pickets and extend to points somewhat above the lower edge of the blank. The blank thus cut and slitted is next drawn out, the slits 1, 2, and I being opened to produce openings 4, 5, and 6. When the blank is thus drawn out, the structure will have assumed irregular form at certain places, as the metal is apt to pucker more or less at the ends of the opening (3, and to correct this and make the structure perfectly flat and regular it is subjected to a series of formingdies, which, entering the spaces 4 5 6, force the metal into symmetrical forms, and all irregularities in the metal pressed out by the forming-dies.

The forms of the invention shown in Figs. 5 and (3 are similar to that above described, except that slits l 2 are made shorter, and forming or finishing dies of different form are used for completing the structure.

Still another form is shown in Figs 7 and 8, this variation being produced by varying the lengths and positions of the slits. Thus it will be seen that numerous designsmay be produced by simply varying the lengths and positions of the slits and employing forming or finishing dies of varying forms.

In such forms of fence as illustrated in Figs.

6 and 8, and in many other forms which might be devised where comparatively wide spaces of metal, as 7,-Figs. U and 8, are left, such spaces are provided with depressions S by means of suitable dies, such depressions serving to strengthen the structure as well as to add to its-ornamental appearance. These depressions 8 may be' made semicircular in crosssection or of any other desired form, and where it is desired to produce a structure of more than usual stability two sections of fence, such aslshown in Fig. 8, may be secured together, in which case the concave or semicircular depressions of one section of the fence will register with those of the other section and produce in effect a round hollow Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The herein-described process of making sheet-metal fencing, consisting in first cutting the blank to produce picket-heads and slitting the body of the blank, next drawing out the blank thus cut and slitted, and then subjecting the structure to forming or finishing dies, substantially as set forth.

2. The herein-described process of making sheet-metal fencing, consisting in first cutting the blank to produce picket-heads; second, producing slits in the body of the blank; third, drawing out the blank thus out and slit, and, fourth, subjecting the structure to forming or finishing dies, substantially as set forth.

p 3. The herein-described process of making sheet-metal fencing, consisting in first cutting the blank to produce picket-heads and producing slits in the body of the blank, then producing depressions in the material of the structure, drawing out the blank thus cut and slitted, and, finally, subjecting the structure to forming and finishing dies, substantially as set forth.

4. A sheet-meal blank from which a section of fence is to be made, said blank being cut at its top to producepicketdieads and having in its body a series of slits adapted to produce open spaces when the blank shall have been drawn out, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

WILLIAM LIVINGSIONE.

Witnesses:

I). VAN WINKLE, J. E. VAN WINKLE.