US1577755A - Bumper - Google Patents

Description

Patented Mar. 23, 1926.

" UNITED STATES,

PATENT oFFICE.

JOHN B. RAUEN, or LOS ANGELES, CALIFORNIA, nssienon T UNITED STATES BUMPER COMPANY, me, or LOS ANGELES, oamrormrmn CORPORATION on CALIFORNIA.

BUMPER.

Application filed May 20, 1925. Serial No. 31,612.

To all whom it may con-0cm)" Be it known that I, JOHN B. RAUEN, a

1 citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented 'a new and useful Bumper, of which the following is a specification.

This invention relates to bumpers, and more particularly to an improved form of construction of a bumper having a plurality of spaced spring steel forward impact bars and which is supported in the center in such a manner as to provide a resilient impact section between its ends of approximately uniform resistant characteristics as the same is distorted from its proper position by the impact force.

Spring steel bumpers, as now constructed, are for the most .part either unsupported at the central point or are of such construction a that the same prevents any yielding of the bumperat such a single point much in the manner as if a post was mounted uponthe frame in the center thereof. a a

These latter bumpers are of such construction that if the bumper is subjected to an impact force at its center the frames ofthe motor vehicle will be the part thereof that is damaged. The former class of bumpers are of such construction that if the bumper receives an impact in its center portion it will offer practically no resistance or protection'to the center part of the motor vehicle,

such as the radiator and the like.

An object of this invention is to provide a bumper having a supported central section that will offer a substantial resistance to impact at this point but which is not so resistive as to prevent the bumper from yielding at this point so that'the frame of.

Fig. is a sectional end elevation, taken substantially on the line 5-5of Fig. 1.'

Fig. 6 is a sectional rear elevation taken substantially on theline 66 of Fig. 2.

In the preferred embodiment of this invention, 1 illustrates a forward impact section preferably composed of spacedspring steel bars 2 and 3, looped at their ends as illustrated at 4 and provided at their and most portion with eyes5. A pair of spring trated by the dotted lines in Fig. '2 than when the same are sprung into position to be engaged in the bracket 13 by means of the pins l l which pass through the eyes 11.

thereof.

This springing of the bars 6 and '7 into position enables the same to present a greater resistance to an impact force at the central portion of the bumper. The bracket 18' is formed in two parts, a. rearward casting 15 which provides cars 16 through which the pins 14 are passed,'and aforward section 17 which provides the monogram casting for the bumper. The casting 15 is provided with an extended section 18 which projects between the bars 2 and 3 of the bumper and provides shoulders 19 'to hold the same spaced apart. A bolt 20 is passed through the two castings and maintains the same in position. a

The modified form of this invention illustrated in Fig. 3 differs from the modification thereof illustrated in Figs. 1 and 2 in that the ends of the bars 2 and 3 are not bowed, as

at 4 in Figs. 1 and 2, but are slightly curved rearwardly as illustrated at 4. and in that the bars 6 and 7 are supported at their inner ends on pins 14: which are adapted to ride in slots 21 formed in the rearward casting 15. This construction and manner of The'bars 6 and 7 are of a less assembling enables the bars 6 and 7 to be extended at their inner ends when the bumper is subjected to a slight impact, and the bars 6 and 7 being bowed in areverse manner to the bars 6 and 7 the ends thereof The modification of this invention illustrated in Fig. at difiers only from the modification thereof illustrated in Fig. 3, in that shackles 22" are provided for supporting the bars 6" and 7 at their inner ends instead of theslots 21 and in that the ends of the bars forming the impact section 1 are not looped or curved rearwardly, but extend straight out. transversely of; the motor ve hicle and provide eyes 4 at their ends. The bars 6 and. 7 are bowed in the same manneras the bars 6 and 7' as illustrated in dotted lines in Figure 4-.

Having fully described a preferred em: bodiment of this invention, and several modifications thereof, it is to be understood that I do not wish to be limited to the exact construction herein set forth, or the modifications thereof, which may, obviously, be varied in detail; without departing from the spirit of the invention as set forth in the appended claims.

I claim:

1. In a bumper, a forward impact section comprising a plurality of spacedbars, and a rear supportingsection including a pair of separate bars connected at, their outer ends to the forwardiimpact section, and connected at their inner ends in strained condition to the forward impact sect-ion intermediate the ends thereof. I

2. In a bumper, a forward impact section comprising a plurality of spaced bars, and a rear supporting section including a pair of separate bars connected at their outer ends to the, impact section, and connected in strained condition at their inner ends to a casting, said casting being adapted to maintain. the. said bars spaced intermediate its ends.-

11th day of May 1925.

comprising a plurality of spaced bars, and a rear supporting section including a pair of separate bars connected at their outer ends to the forward impact section and connected at their inner endsto the forward impact section intermediate the ends thereof, in strained condition.

5. Ina bumper, a forward impact section comprising plurality of spaced bars, and

a rear supporting section including a. pair of separate bars connected at their outer ends to the impact section and at: their inner ends to a casting in strained condition, said casting being adapted to maintain the said bars spaced intermediate its ends said supporting bars being maintained in position agailisttheir normal tendency to bend.

6. In a bumper, a'forward impactsection comprising a plurality of spaced bars, and a rear supporting section including a pair of separate bars connected at their inner ends to a casting in strained condition, said casting being adapted to maintain the said bars spaced intermediate its ends, said supporting bars being secured to the said casting'in a manner to permit relative movement of their inner ends;

7. In a. bumper, a forward impact section comprising a plurality of spaced bars, and a rear supporting section including a pair of' bowed separate bar's connected at their outer ends to the impact section; and at their inner ends to a casting, said casting being adapted to maintain; thesaid' bars spaced intermediate its ends said supporting bars being maintained in position against their normal tendency tobow, said supporting bars being secured to-the said casting in a manner to permit relativemovement oftheir inner ends.

Signed at Los Angeles, California, this JOHN B.. RAUEN;

Images