US1317112A - Frank a - Google Patents

Description

F. A. WASSON.

BUMPER BAR.

APPLICATION FILED MAR. 25. I9I9.

Patented Sept. 23, 1919.

-FL'FG. Z

WITNESSEIS v INVENTOP ATTORNEY UNITED STATES PATENT OFFICE.

FRANK A. WASSON, OF MILWAUKEE, WISCONSIN, ASSIGNOR T0 BADGER MANUEACTUR ING- CORPORATION, OF MILWAUKEE, WISCONSIN, A CORPORATION OF DELAWARE.

summit-nan.

Application filed March 25, 1919. Serial No. 285,082.

. To all whom it may concern.-

have invented new and useful 1m rovements 1n Bumper-Bars, of which the toi owing 1s a description, reference being bad to the accompanying drawings, which are a part of this specification.

This invention has for its object to provide abumper bar for automobiles with an end closure that'is integral and hence inca able of being lost.

eretofore the tubular bumper bars have either been left open at their ends, which gives them an unfinished appearance, or they have been provided with wooden plugs driven into them toreceive a wood screw for holding an ornamental cap in place. The wooden plug in the end of the bumper bar forms an insecure anchoring means for the cap as it is liable to shrink and become loose so that the caps with the plugs are frequently 10st, and the dealers are constantly called upon for renewals. The high polish or ornamental finish that is usually given to the bumper bars 'makes it} undesirable to secure the cap in place b screws or pins or other means requiring machine work on the end of the bar. t

It is the object of this invention to provide.

a closure for the end of the bumper bar which will have the same neat and ornamental appearance as the remainder of the bar, and being integral with the bar will be incapable of being lost.

With the above and other objects in view the invention consists in the bumper bar as herein claimed and all equivalents.

Referring to the accompanying drawings in which like characters of reference indiate thcisame parts in different views:

Figure l is a perspective view showing a portion of the bumper bar with the end constructed in accordance with this invention;

Fig. 2 is a similar view thereof with the ears forming the end closure only partly bout;

Fig. 3 is a view of the blank from which the bar is formed; and,

Fig. 4 is a; view showing the manner in which the ears contact with each other along their outer 14:05 to form a close joint In these drawings 10' indicatosa tubular bumper bar which is formed as usual from.

a blank 11 bent along fold lines 12 matte bular form which may be square or of other:

angular shape in cross section. The meet Specification of Letters Patent. Patentedsept, 23, 1919.

ing edges of the tubular bar are usually electrically welded. The ends of the blank 11 are'scrrated to provide triangular ears 13 uniting along the dotted fold line 14 with the respective faces of the tubular bar be tween the dotted fold lines 12. The shapol,

of these triangular ears 13 is such that whenthe cars are bent over alon 14, each ear will contact wit the edge of the next car before reaching the plane of the fold lines, thusproducing-a pyramidal 010-, sure at the end of the bumper bar formed; by the ears integral with the faces thereof;

i .the blankis folded to its tubular form and their fold lines The shearing action of the dies by which the;

sheet metal blank is cut leaves the'edge slightly oblique, and in folding up the blank placed outermost, which insures a close fitting contact of the edges of the bent over ears as indicated in Fig. 4, the oblique edges of the ears enabling them to contact only along their outer surfaces. It. is as if these- ,76 the acute angles of the Oblique edges aref bent over cars were mitered toroduce their close fit, though the oblique e( ges are inchv dental to theoperation of thecutting dies. x 7

In practice it is preferred to fold the ears to a partly closed position, such as shown in. Fig. 2 and then subect them to pressure" fromdies of the s ape of the finished bumper bar. The pyramidal end of the bumper bar is nickel-plated and burnished or otherwise finished inthe same manner-as the remainder, of the bar so that it resents the same Ornamental appearance. that the bumper bar may, not have oftenti-- ency to float in the electroplating bath,"pro

vision is made for the admissiombf liquid to the interior thereof. For this pose the end of each of'the triangular'em",

is blunted at 15 sh that when they are folded together these blunted ends form a small opening at the center of the closure through which air and liquid may pass.

What I claim as new and desire to secure by Letters Patent is: v v

l. A bumper bar having. triangular ears at its ends bent to engage,each other along their sideer es to close the end of the bar.

2. A 'tubu ar bumper bar angular in cross section provided with triangular ears at the ends of its respective faces, said cars being order W of the bumper bar.

bent along lines in a common plane and contacting with each other to close the end 3. A tubular bumper bar of angulareross section having triangular ears at the ends of their respective faces, said ears being folded along lines in a common plane transverse of the bar and contacting with each other along their side edges and havingtheir ends blunt to leave a central openlng in the closure for 5. A. bumper bar having triangular ears at; its ends bent to engage each other along their side edges to close the end of the bar,

one or more of the ears'bcing cut away to provide an opening in the closure.

- (i. A bumper bar having cars at its ends bent to place their side edges in juxtapo sition to substantially close the end of the bar.

7. A tubular bumper bar having integral cars at us ends, said ears being bent along lines in a common plane to form closures for the ends of the bar.

In testimony whereof I aflix my signature in presence of two witnesses. y FRANK A. WASSON.

\Vitnesses It. S. C. CALDWELL, H D. CnAsn.

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