US1581349A - Bumper - Google Patents

Description

3. F. L. KAUFMANN ET AL BUMPER A ril 20,1926. 1,581,349

Filed July 11, 1925 Patented Apr. 20, .1926.

UNETE s'r CHARLES E. L. KAUFMANN All D WA'JLEBL. KAUFMANN, OF SANTA. ANA, CALIFORNIA.

roman.-

Application and July 11, 1925. am; m. 42,997.

To aZZ whom it may concern."

Be it known that we, CHAnLns F. L. KAUF- MANN and /VALLER L. KAUFMANN, citizens of the United States, residin at Santa Ana,

in the county of Orange an 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 modification of the bumper disclosed in our copending application Serial Number 5,999 filed January 31, 1925.

An object of this invention is to provide an improved form of construction of the intermediate impact section of the bumper.

that is between the frame members of the vehicle to which the same is attached so as to provide a rigid impact section, which rigid impact section is yieldably mounted in position in advance of the frame of the motor vehicle. 1

Other objects and advantages of this invention will be apparent from the following detailed description of a preferred embodiment thereof as illustrated in the accompanying drawings.

1n the drawings:

Fig. 1 is a front elevation of a bumper em-' bodying this invention.

Fig. 2 is a top plan view thereof.

3 is a sectional end elevation taken substantially on the line 33 of Fi 1.

Fig. 4 is a sectional end elevation taken substantially on the line H, of Fig. 2.

Fig. 5 is a detached lan view of a rigid impact section and y eldably supporting ends thereof.

1n the preferred form of our invention, 1 illustrates a forward impact section composed of a plurality of spring steel bars 2 and 3, which spring steel bars are looped at their ends to provide eyes 4 through which bolts 5 extend and which bolt 5 is provided between the bars 2 and 3 with spacers 6 so as to hold the bars rigidly spaced apart atport the bars 2 and 3 and maintain the same spaced a art. I

The 0 amps 8 which support the bum, er from the frame of the vehicle preferably comprise a casting 15 curved as illustrated at 16 to proximate the curvature of the horn of the vehicle frame and which are provided at their forward end with flanges 17 through which bolts 18 are extended. The bolts 18 likewise pass through a castmg 19 and provide a clamp therewith. The bars 7 and 10 are clamped together and held n position between the flange 17 of the castmg 16 and the casting 19 by means of the bolts 18. The portion of the casting 15 which is curved to proximate the curvature of the horn of the motor vehicle is preferably secured thereto by means of bolts 20. The clamps 14:, by means of which the intermediate bars 10 are clamped to the forward impact section 1, preferably comprise a hollow casting 21 which has a slot 22 extending horizontally therethrough and recesses 23 of approximately the width of the bars 2 and 3 of the forward impact section so that the bars 2 and. 3'fit closely within the slots 22 and recesses 23. The recesses 23 at their intermediate ends provide faces 23 against which the adjacent edges of the bars 2 and 3 abut.

A second casting 24 is provided which likewise provides a nameplate or symbol casting for the bumper. This casting 2 1 is secured to the casting 20 by means of bolts 25 at its ends and by means of a stud bolt 26 at its center, the stud bolt 26 being screw threaded into the portion 27 of the casting to the rear of the horizontal portions 13 of the intermediate bars 10. In addition to the looped portions 11 of the intermediate bars 10, means are proyided for absorbing the impact force imparted to the impact section may be', obviously, varied in detail without lower ends by means of bolts 33. The impact member 30 is constructed of rubber or like resilient material and is so mounted between the looped ends of the bars 10 as to provide a resilient yielding member which acts together with the spring loop 11 formed in the bar 10 to absorb the impact shock which may be imparted to the impact section 1 of the bumper.

By this construction of clamp 14, the forward edge 36 of the horizontal portions 13 of the intermediate bars 10 may be projected forward to a position in thesame vertical plane with the front face 37 of the bars 2 and 3 and casting 24 may be employed to rigidly and positively maintain all of the bars 2, 3, 10 in position. Th1s construction also enables the use of a central bolt, such as 26, to revent the castings 24 and 14: from being distended from their osition, and permits the bars to be retained in position and to revent rattling after the same have receive a violent impact.

The bolt 26 is threaded at both ends and the intermediate section thereof provides a spacer for the bars 13. Fitted over the forward end of the bolt 26 is a washer 38 which has a pair of ears 39 which act as spacers for the bars 13. Screw threaded to the bolt 26 is a nut 40 to maintain the washer 38 in osition. Nuts 41 are screw threaded to the orward ends of the bolts 26 to maintain the castings 24 in position.

Fig. 5 illustrates a modlfied form of mounting for mounting the intermediate bar 10 to the rearward supporting bar 7 in which modificationa spacer 34 is mounted between the ends of the bars 7 and 10 and a bolt 35 is passed through bores formed in the respective sections of the bars 7 and 10 and through the spacers 34: to secure the same together.

This modification, may be particularly desirable for use in connection with many of the common forms of clamps or brackets for securing the bumper to the motor vehicle frame.

Having fully described a preferred embodiment of this invention, it is to be understood that we do not wish to be limited to the exact construction herein set forth, which departing from the spirit of the invention as set forth in the appended claims.

We claim:

1. In a bumper, a forward impact section connected at spaced points to a pair of fiat steel bars having their fiat faces in horizontal planes, whereby the impact section is provided with a rigid central portion, and means for attaching such bumper to a motor vehicle.

2. In a motor vehicle bumper, a pair of vertically spaced spring steel buffer bars connected at spaced points to a pair of fiat steel bars having their fiat faces in horizontal planes, whereby the vertically spaced bars are provided with a rigid central portion, and means for attaching such bumper to the vehicle.

3. In a motor vehicle bumper a forward impact structure, a secondary and supporting structure connected by spring loops to the front structure, and impact members disposed between said structures so that the forces of the impact may be gently absorbed by said impact members and said spring loops, and a rigid impact section'so connected to the forward impact structure that its forward edges are aligned with the front sides of the members forming the forward impact structure.

4. A motor vehicle bumper, comprising a plurality of vertically spaced. bars, a pair of flat steel bars having their flat faces disposed in horizontal planes joined to the medial portion of the said spaced bars so as to cause the same to be rigid horizontally.

5. A motor vehicle bumper, comprising a plurality of vertically spaced bars, a plurality of flat steel bars having their flat faces disposed in horizontal planes, the latter said bars being joined to the medial portion of the first said bars so as to cause the same to be rigid horizontally, and impact members supported in position to absorb impact imparted to the rigidly joined portion of the said bars.

6. A motor vehicle bumper comprising an impact bar adapted to extend transversely of the vehicle, spaced clamps secured to medial points of said bar, a pair of fiat steel bars aving their greatest transverse dimension in horizontal planes and held by said clamps in position to reinforce the impact bar, and a secondary bar carrying such impact bar.

7. A motor vehicle bumper, comprising a pair of attaching members holding the umper directly in front thereof, impact bars having rigid sections formed of a pair of bars having their greatest transverse dimension in horizontal planes, and means mounting such bars in position and bearing against said. attaching members to absorb impact shocks.

8. A bu-mper comprising a forward impact section, a pair of intermediate bars looped at their ends and twisted intermediate their ends so as to provide horizontally extending sections at the front of the bumper for reinforcing the said impact section and making the center thereof rigid, a supporting bar secured to the intermediate loop bars, means for clamping the supporting bar and 100 bars in position, means for securing the sai loop bars to the impact section, and impact members interposed between the said secur- 1ng means.

9. Abumper, comprising a pair of vertically spaced spring steel bars, a plurality of flat steel bars positioned intermediate the said vertically spaced bars and rigidly connected to the vertically spaced bars, means for securing the bumper in position, and resilient impact members interposed between the said securing means and the said impact section. 10. In a bumper, the combination of a plurality of vertically spaced bars having their front faces in the same vertical plane, intermediate bars disposed between the said vertically spaced bars and presenting their edge faces in the plane of the said front faces of the vertically spaced bars, and means for securing the said vertically spaced bars and the horizontally disposed bar in posiion.

11. In a bumper, the combination of a plurality of vertically spaced bars having their front faces in the same vertical (plane,

a plurality of horizontally dispose and spaced bars mounted intermediate the first said vertically spaced bars and presentin edge faces in the same vertical plane wit% the front faces of the first said vertically spaced bars, and means for rigidly securing the said bars'together.

,12. In a bumper, the combination of a vertical impact section, apair of intermediate bars 100 ed at their opposed ends and twisted at rig t angles so as to present horizontally disposed sections for reinforcing the said impact section, means for rigidly securing the said intermediate bars to the impact section, and means for securing the said intermediate bars to a motor vehicle frame.

13. In a bumper, the combination of a forward impact section, a pair of intermediate bars looped at their opposed ends and twisted at right angles at their adjacent ends, and means for securing the said intermediate bars together and to the said impact section at the twisted sections.

14. In' a bum er, the combination of a forward vertica y extending impact section, a pair of intermediate bars looped at their opposed ends and twisted at their adjacent ends, means for securing the said intermediate bars to the said vertical impact section, the said vertical impact section being looped rearwardly at its opposite ends.

15. In a bumper, the combination of a plurality of vertically spaced bars, a plurality of intermediate bars looped at their 0 posed ends and twisted at right angles at t eir adjacent ends, means for securing the said intermediate bars together and to the vertically s aced bars and so as to maintain the vertica y spaced bars in spaced relation the said vertically s aced bars being curved at their ends and ing provided at their ends with spacers for maintaining the vertically disposed bars in spaced relation at their ends.

16. In a motor vehicle bumper, a forward impact structure, a plurality of flat steel bars having their flat faces in horizontal lanes connected by spring loopsto the out structure, means for attaching the bumper to the motor vehicle, act members disposed between the sai securing means and the said flat steel bars so that the forces of impact may be gently absorbed by said im act members and said spring loops, the at steel bars being so connect to the forward impact structure that their forward side faces 0 the members forming .the forward impact struct 17. In a bumper, the combination of a forward vertically extending'imppct section, a pair of intermediate flat steel ars 100 at their opposite ends and twisted at their adjacent ends so as to provide forward sections havin their flat faces disposed in horizontal p nes, means for-securing the said intermediate bars to the said vertical impact section, the said flat steel bars belooped rearwardly at their opposite 18. In a bumper, the combination of a forward impact section, a pair of intermediate flat steel bars 100 d at their opposite ends and twisted at right angles at their adjacent ends so as to provide a rigid forward section having t eir flat faces disin horizontal planes, and means for securing the said intermediate bars together and to the impact section at the twisted sections.

Signed at Los Angeles California, this 30th day of June 1925.

CHARLES F. L. KAUFMANN.

WALLER L. KAUFMANN.

are aligned'with the front

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