US1581282A - Automobile bumper - Google Patents

Description

April 20 1926.

A. M. MULLER AUTOMOBILE BUMPER I Filed June a, 1925 INVEN TOR.

' ALEXANDER MICHAELMULLER Patented Apr. 20, 1926 PATENT "OFFICE.

ALEXANDER MICHAEL MULLER, ore-OAKLAND, cA I roR rA.

I'AUTOMOBILE'IBUMPER.

Application filed. .Tu'ne8,'1925. Serial No. 35,524. I

To all whom it may concern:

Be it known that I, ALEXANDER MICHAEL MULLER, a citizen of the United States, re-

' sidin at Oakland, in the county of Alameda and r jtate of California, haveinvented certain new and useful Improvements in Automobile Bumpers, of which the following is a specification.

My invention is an automobile bumper of the single band type reversed on itself to form a loop from one side of the car to the other. An object ofmy invention is to provide a bumper made from a single, band bent with reverse turns on itself, whereby the central part of the band extends outwardly from the car, each end is crossed over the other and connected to the front central part and the rear loops are secured to the frame of the vehicle.

Another object of my invention is to mount a ballbearing at the sliding parts of the bumpers where the spring band would I otherwise contact. As a detail of this I construct a yoke with ball races therein, adapted to engage a set of balls which bear against a spring member. I attach the antifriction yoke to the ends of the band and to the central front part of the bumper to provide for the sliding movement between the ends and the central front section of the band.

My invention will be more readily understood from the following description and drawings in which Figure 1 is a front view of the bumper in the direction of the arrow 1 of Figure 2.

Figure 2 is a plan View of Figure 1 in the direction of the arrow 2, showing the attachment to a vehicle.

Figure 3 is a rear elevation in the direction of the arrow 3 of Figure 2.

Figure 4 is a transverse section of one of the ball-bearing yokes as if taken from the line %-4 of Figures 1 to 3.

Figure 5 is a horizontal section of the yoke and bumper band taken on the line 5-5 of Figure 7 is a front elevation of Figure 6.

in the direction of the arrow 7.

Flgure 8 1s a section through the bumper have any relative movement.

holder on the line 8--8- of Figure 2 in the direction of the arrow.

My bumper as a whole is designated by the numeral 1, and is constructed with a single band of spring metal, having a .front section 2 extending straight across the vehicle from one side tothe other. Similar reversed bends 3 are formed in the metal strip so that the clamped sections 4 are substantially parallel to the front 2. The central portion of the back of the bumper has the bands crossed, as indicated at 5 by which the edges of the band contact. The front ends 6 of the band bear against the front section 2.

The cross-over 5 of the band is held by a screwthreaded staple 7 having a crossbar 8 and a clamping nut 9 on each leg of the staple. Itis intended by this means to secure the cross-over sections so they will not Any other suitable clamp will probably be suflicient. The bumper is attached to the chassis by any suitable holder 10 having clamps 11 to engage the clamped sections 4 of which the holder shown has channel shaped straps 12 with an inturned end 13 engaging the channel 14: of the chassis.

The ball bearing yokes connecting the ends 6 of the bumper to the front section 2, are constructed as follows: In Figures 4: and 5 the yoke 15, having downwardly extending legs 16 and 17 witha clamp-bolt 18 therebetween, is rigidly secured to the ends 6 of the band by means of a bolt 19. These ends 6 have short ball races 20 and the leg 16 of the yoke has ball races 21. The balls 22 inserted in these races bear against the central section 2 of the bumper and allow free sliding movement.

In the alternative yoke, as shown in F igures 6 and 7, the yoke 25 is constructed with double reverse bends 26 and 27 forming an anti-friction bearing 28 between the arm 29 and the mid-section 30, constructed by ball races 31 in which the anti-friction balls 32 press against the central front section 2 of the bumper. The clamping section of the yoke comprises the mid-section 30 and the arm 33, between which the end 6 of the bumper is secured by the bolt 34, which extends through the arm 33 and is screwthreaded into the mid-section 30. This con-- struction maybe simplified by omitting the reverse bend 27 and the arm 33 by bolting the end 6 of the bumper directly onto the section 30.

These anti-friction yokes function as follows: As above described, it Will be noted that they are rigidly clamped to the crossover ends 6 of the bumper and slide on the central front section. Therefore When the bumper is pressed together these yokes have an easy sliding motion on the front section. It will be manifest that the construction of the bumper itself and of the antigriction yokes may be considerably modi- Having described my invention What I claim is 1. A bumper comprising in combination a single band of metal bent at each side in reverse bends to form a front section and rear clamping sections the ends of the band being crossed over each other and brought into contact with the front section.

2. A bumper as claimed in claim 1, having means to hold the ends into contact with the front section of the band.

3. A bumper as claimed in claim 1, having an anti-friction yoke engaging the ends of the band and the front section thereof.

4. A bumper as claimed in claim 1, having a yoke secured to the ends of the band and having an anti-friction ball bearing engaging the front section of the band.

5. A bumper as claimed in claim 1, having the yoke formed With reverse bends, tWo sections of such yoke being clamped to the end of the band and the other section of the yoke forming an anti-friction ball bearing engaging the front section of the band.

6. A bumper as claimed in claim 1, having a clamp securing the crossed over ends of the band to prevent movement thereof.

7. A bumper as claimed in claim I, having clamps securing said clamping sections of the band to the frame of a vehicle, having a threaded staple securing the cross over parts of the ends of the band and anti-friction yokes engaging the ends of the band and the front section thereof.

In testimony whereof I affix my signature.

ALEXANDER MICHAEL MULLER.

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