US1290187A - Bumper. - Google Patents

Description

c. c. HELMII/IAN II c. E. sIzAIIn.

Pand- Jan. 7, 1919.

CALVlN C. HELMAN. F CLEVELAND, AND CLEMENIT E. EABD, OIE COLUMBIANA, CiHIO.

BUMPER.

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. Specification of Letters Patent.

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the force of an impact to prevent the transventioii, such as will enable others skilled in tlie`art to vwhich it appertains to make and usel the same.` l

This invention relates to bumpers forl inotor'veliicles. and the p'riinaiyobject of the invention is to provide one which is so constructed that it will absorb and dissipate mission of the latter to the frame of the vef hicle, .thus eliminating' aniv injury thereto.

,A further object of the-'invention is toprovide a vbumper which Iis of neat.- durable and substantial desi-gn, effective in operation and of inexpensive construction.

Witli these andother objects ,in view as will appear as the description proceeds, the| invention comprises the variousnovel features of construction. combination and ar rangement of parts as will be fully described hereinafter andafterward .speeifi-4 o call)v claimed. Referring to the drawings: Figure 1 represents a plan view'of our improved bumper. Y

Fig'. Q represents a transverse section view through the same. and shown operativeljv attached to a motor vehicle. and

Fig. B represents an enlarged detail hori-j zontal sectional view through a.' portion of Jthe bumper.

Similar characters of reference are used to denote corresponding parts throughout the acco.npanvinnl drawings and the followingr description.

Inoider that the construction and operation of 4the invention nialv he readiliY apparent to those skilled in the art to which the invention relates. we have illustrated an approved embodiment thereof in the accompanying' drawings. and will now proceedto fullv describe the same in connection with said drawings. in which 1 and 2 indicate a pair of spaced parallel channel bars hav C. HELMA lGbetween each pair of spacing` sleeves ing their ends sliglitlvv Vcurved in a rearward direction.

rlfhese bars, as clearlxv shown in Fig. 2 are substantially U-shape in cross section. and

have a plu "alit'v-v of spaced pairs of-quadrilate al ltoggle links Divotalliv connected between and within the channel bars 1 and Q b v bolts 3. `Each quadrilateral toggle con-I sists of pairs of links l and rpivotallv connected by the bolts 3 and G. r indicates spacing sleeves positioned on the bolts 3 to hold each pair' of quadrilateral toggles in spaced relation. The pivotal .boltso are each provided with a pair of spaced sleeves 8 to hold the ends of the quadrilateral'togi gles in spaced relation.

9 indicates tensioned i their terminal ends'coiled around the bolts S. tlie` tension of said springs 9 being' such as will normally maintain the bars 1 and Q in spaced parallel relation.` V

A lbuffer spring 10 is positioned between the ends of each pair of .toggle links and `has its 4terminal ends also coiled around the bolts 6 between the spacing sleeves S. Thesesprings serve to absorb and dissipate tlieforce of an impact delivered to the bumper.

11 indicates a pair, of supporting brackets secured to the forward ends of the vehicle frame.- each of which' embodies' a clamping section 12 toclampinglv engage the channel bai' 1 to support the bumper in'opeiative position. l

In the use and ope 'ation of the bumper above described and when an impact is de livered to the'outer'bar '2. the latter will 'vield toward the bar 1. at the same time increasingl the tension on the springs 9. which together with the bumper springs positioned between each pair of toggle links will absorb and dissipate the force of the impact. B v providing' a bumper which will absorb and dissipate all lshocks and impacts. liabil itv of injury to the frame of the vehicle is .obviated at the same tinielessening the. dangers incidentv to collisions. The tenl mi springs that have p yse' sioned springs 9 will cause the outer bar 2 to assume its normal position with respect to the barA 1 inimediatel)Y after an impact therewith.

From the foregoing description taken in connection with the 'accompanying draw ings, we desire to have it understood that such changes in-construction and arrangement of parts may beniade when desired as are Within the scope of the appended claim.

.Having thus described oui` 1nvent1on,what' ,l porting one of saidbars lon the front ends of thej'fehicle frame,v pairs 4of spaced quadrilateifa-l toggle links 'positioned between and pivotally connected to said bars, ten. .sionednieans connected to and across each and shock absorber i pair of toggles, and cushioning means positioned between and connected tol each pair of toggles, said tensioned and cushioning means copeiiating to simultaneouslyabsorb and dissipate the force of impact delivered to saidonter'ban f In testimony whereof We have signed our names to this ,specification in the presence of two subscribing-witnesses. C. C. HELMAN.A CLEMENT-E. BEARD.

lVitnesses:

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