US1456845A - Frame making - Google Patents

Description

r 'Patented May 29, 19231.

FRANZ A. FULLER, F NEWARK, NEW JERSEY, ASSIGOR T0 THE J. E. MEBGOTT CO., 0F NEWARK, NEW JERSEY, A CORPORATION 0F DELAWARE.

vrimini: MAKING.

Application filed July 16, 1921. Serial No. 485,326.

To all who/m, t may concern y Be it known that I, FRANZ A. FULLER, a citizen of the United States, residin at Newark, in the county of Essex and tate of New Jersey, have invented new and useful Improvements in Frame M aklng, of. which the following is a specification.

' This invention has for one of its ob'ects to provide a process and means for ma ing the corners of a metal frame. Y

Another object is to produce frames having square, sharply angled c orners, smooth and true, without seams or lioints and which in addition to being of unusual strength, are

of pleasing appearance.

While the present disclosure reiers more particularly to hingedly connected elements constituting the frames of hand bags, purses and like iexible bodied articles having a rigid closing means, it is also equally applicable to metal frames for a wide range of other purposes as will be readily understood. v

Such frames are usually made by removing a triangular piece of stock from the sides of the channelled bar, then bending to produce the angle of the corner andbrazing the abutting edges forming a Joint of questionable security, which almost invariably shows on the finished surface, and obviously lacks the strength of an integral, unbroken structure such as is attained by the process later described` the 'several steps of which are indicated in the accompanying drawing, forming a material part of this disclosure, and in which Figure l is a fragmentary plan view ofra blank used in niaking a conventional type of bag frame.

Figure 2 is a side View of the same after being formed into the usual channel shape.

Figure 3 is a perspective view showing one of thev corners after the :first operation.

Figure 4 is a similar view of the corner subsequent to the next operation.

Figure 5 is another perspective view showing the appearance of the corner after the inal press operation.

Figure 6 is a side view illustratingl the corners cfa frame after the last or finishing operation.

n the drawing, thenumeral 10 designates in general the blank, the said blank being a strip of relatively thin metal capable of being bent, drawn or otherwise ing a narrow backing or rib 14 and two equal sides 15. l

The points where the corners are to be made having been ascertained, the channelled blank is placed between dies, which upon being;Y actuated produce the sha e shown. in ig. 3, these dies forming tlie angle of the corner 16, and at the same time drawing the metal, where it is expanded into opposite fiat sides 17. i

The sceond operation is between similar dies which accentuate the sharpness of the angle 16 and decrease the distance between the surfaces 17, enlarging them as at 18, by drawing the metal in a manner well understood by those `:familiar with the art.

Further drawing operations, in number depending upon the width of the channel sides 15, are indicated in Figure 5, in which the corner 16 is preserved and the fiat surfaces extended and broadened, as at 19, the distance between them being diminished by causing the molecules of the metal to iow in theoperation of drawing in suitable dies.

Finally the corners are passed between hard, smooth faced rollers, a smooth iiat plate suited to the space between the side walls of the channel being previously interposed, and the corners reduced in thickness to agree with the remainder of the channel, thus producing an integral, unbroken frame structure, possessing unusual strength and having a desirable appearance.

Due to the manner of forming the corners first by a series of combined drawing an bending operations and roller finishin the surfaces are absolutely flat and smoot devoid of wrinkles, seams or' other irregu arities, and aftertrimming away any excess of metal at the inner corners 20, a frame is produced exhibiting the highest standard of excellence. A

Although the foregoing is descriptive of the process of construction, it will be ap-l parent that changes may be made without 4simultaneously drawing the same,

the exercise of invention or conflicting with the sco e of the appended claims.

Having t us descr1bed my invention, what I claim as new and desire to secure by Letters Patent, is

l. The process of forming channeled sheet metal frames consisting in forming a Hat sheet metal blank, channellin the central portion of said blank longitu inally, bendlng the channelled member at an angle ang an thereafter rolling the corners to orm a completed member with sharp corners.

2. The process of forming a channelled sheet metal frame, consisting in preparing a flat sheet metal blank, forming said blank into a channel having a back and two parallel sides, bending said channel at predetermined points to produce angular corners, drawing the channel simultaneously with bending, repeating the drawing operation,

Maaate and finally rollin the corners until level with the sides of t e channel.

3. The process of forming a channelled sheet metal frame, consisting in preparin a fiat sheet metal blank, forming said blan into a channel-havin parallel sides, ben ing the channel t us formed with the back outermost to produce the angle desired, simultaneously drawing the metal raised by bending, reducing the raised portion of the sides by repeated drawings, rolling the drawn portion until level an uniform with the sides and shearing the excess of metal from the inner corners.V

This specification signed and witnessed this 8th day of July, 1921.

FRANZ A. FULLER.

Witnesses: u

A. B. UNDERHILL, F. Nom. p

a back and two e ual', A

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