US2659411A - Bending apparatus - Google Patents

Description

Nov. 17, 1953 Filed June 22 1951 F. J. BIRD BENDING APPARATUS 2 Sheets-Sheet 1 Fig.

Frederik/r .1. Bird INVENTOR.

Nov. 17, 1953 F. J. BIRD BENDING APPARATUS 2 Sheets-Sheet 2 Filed June 22 1951 Frederick J. Bird INVENTOR.

you 8M Patented Nov. 17,1953

UNITED STATES PATENT OFFICE BENDING APPARATUS Frederick J. Bird, De Witt, Iowa Application June 22, 1951, Serial No. 232,886

- 1 Claim. 1

This invention relates to new and useiulimprovements and structural refinements in bending apparatus, and the principal object of the invention is to provide an apparatus of the character herein described which may be conveniently and efiectively employed for bending straight bar stock into the form of ornamental scrolls of many diiierent designs.

Some of the advantages of the invention reside in its extreme simplicity of construction, in its expeditious and convenient operation, and in its adaptability to economical manufacture.

With the above more important objects and features in view, and such other objects and features as may become apparent as this specification proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure 1 is a perspective view of the invention in the process of one form of bending operation;

Figure 2 is a perspective view showing the invention in the process of another form of bending operation;

Figure 3 is a perspective view illustrating the invention in still another form of bending operation;

Figure 4 is a vertical sectional view of the invention per se, this View being taken substantially in the plane of the line 4-4 in Figure 1; and

Figure 5 is a plan view of several different scrolls such as may be formed with the use of the invention.

Like characters of reference are employed to designate like parts in the specification and throughout the several views.

Referring now to the accompanying drawings in detail, the invention consists of a bending ap-.

paratus which is designated generally by the reference character [0, the same embodying in its construction an elongated base i2 including a pair of vertically spaced plates l4, It.

First and second WOl'k engaging and forming heads It, 20, respectively are rotatably mounted at the opposite ends of the base 12, this being accomplished by providing the upper base plate is with circular apertures 22, 24 to rotatably receive the respective heads I8, 20, while pivot screws 25 extend through the lower base plate it into base portions 28, 30 of the respective heads, which are located between the plates [4, 16 as is clearly shown in Figure 4.

lated levers or arms 32, 34 which are rigidly ter is provided with a fiat spot 46.

secured to the base portions 28, 30 of the respective heads, as shown.

A pair of upwardly projecting, mutually spaced work engaging stop elements or pins 36, 38 are provided on the upper base plate I4 between the heads I8, 20, while means are provided vfor restricting the extent of rotation of the head 20 when so desired, these means involving the provision of a vertical bore 40 in the head 20 to receive a removable stop pin 32. This stop pin projects downwardly from the head 20 and may abut the side edges of the upper base plate l4 so as to render a complete rotation of the head 29 impossible.

The head I 8 is provided With a transverse work receiving slot 44 which is open at the ends and top thereof as shown, the lateral surface of the head l8 being cylindrical, as is the lateral surface of the head 20, with exception that the lat- Moreover, the head 20 is substantially larger in diameter than the head l8 and isformed with an eccentrically disposed, circular recess 48 which is open at one side of the head as shown at 50.

When the invention is placed in use, the entire apparatus is preferably supported by clamping the lower base plate It in the jaws of a vise indicated at 52, so that the levers or arms 32, 34 may be swung in a substantially horizontal plane.

A flat bar stock such as is shown at 54 may then have one end portion 56 thereof inserted in the slot 44 of the head I8 and with the stock abutting the stop pin 36, the head it may be rotated by means of the arm or lever 32 so that the end portion of the stock is wrapped partly aroundthe head 18 to form an open eye such as is shown at 58 in Figure 5.

A similar eye may then be formed at the other end of the stock 54 and one of the eyes may then be inserted in the recess 48 of the head 20, whereupon rotation of the head 20 will cause the stock to be formed into a, spiral scroll as shown at 6B.

- It will be apparent that by selectively employing the heads 18, 20, selectively, utilizing the stop pins 36, 38 or the stock, and restricting rotation of the head 20 by means of the stop pin 42, scrolls of various different sizes and forms may be made, as exemplified in Figure 5. The different designs which are to be created depend entirely 011 theprocedure usedin forming them, which is believed incidental to the provision of the bending apparatus and will be readily apparent to those skilled in the art to which the invention pertains.

It is believed that the advantages and use of the invention will be clearly understood from the foregoing disclosure and accordingly, further description thereof at this point is deemed unnecessary.

While in the foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that minor changes in the details of construction, combination and arrangement of parts may be resorted to without departingfrom the spirit and scope 01' the invention as claimed.

Having described the invention, what is claimed as new is:

In a bending apparatus of the type described, the combination of an elongated base plate having a semi-circular end edge and a pair of mutually parallel side edges tangential to said end edge, said plate being provided with a circular aperture concentric with said end edge, a cylindrical shank rotatable in said aperture, an enlarged substantially cylindrical bending head provided eccentrically on said shank, said head being of such size that a segmental portion thereof projects beyond the edges of said base plate,

4 said segmental portion being provided with a bore parallel to the axis 01' the head, and a stop pin removably positioned in said bore and projecting downwardly therefrom, the projecting portion of said pin being movable in an arcuate path at the outside of the semi-circular edge of said plate but being engageable with the side edges of the plate to provide stop means for limiting the extent of rotation of the head.

FREDERICK J. BIRD.

References Cited in the file Of this patent UNITED STATES PATENTS Number Name Date 344,247 Cawley June 22, 1886 890,514 Owen Oct. 2, 1888 566,379 Deck Aug. 25, 1896 842,994 Baldwin Feb. 5, 1907 977,150 Wheeler Nov. 29, 1910 2,424,024 Garton July 15, 1947 FOREIGN PATENTS Number Country Date 428,949 France July 3. 1911

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