US1649777A - Positioning apparatus for headlights - Google Patents

Description

Nov. 15, 1927.

J. D. GUISS POSITIONING APPARATUS FOR HEADLIGHTS Filed June 30. 1925 I'll INVENTOR .2 John 17. 601.5: A BY v of companion Patented .Nov. 15, 1927.

UNITED STATES 1,649,777 PATENT OFFICE.

JOHN D. GUISS, OF SEATTLE, WASHINGTON, ASSIGNOR OI ONE-HALF TO L. W. HARKINS, OF TACOMA, WASHINGTON.

POSITIONING APPARATUS FOR HEADLIGHTS.

This invention relates to apparatus for positioning the spot andheadlights of automobiles; and its object is the provision of inexpensively constructed and conveniently adjustable apparatus of this character.

' The invention consists, generally, in a pair members having indicating marks thereon, and in means for regulating the members to locate elevations and horizontal positions of the markings thereon pre determinately.

The invention further consists in the novel construction, adaptation, and combination of parts hereinafter described and claimed.

In the accompanying drawing,-

Figure 1 is a perspective view of apparatus embodying the present invention shown applied to the wall of a building; Fig. 2 is a Vertical section taken substantially on line 2-2 of Fig. 1; and Fig. 3 is a perspective view of a portable stand upon which the positioning devices are mountable.

In said drawing, the reference numerals 5 and 5 represent two complementary boards of wood or other suitable material.

As shown, these boards are of rectangular shape, disposed in overlapping relation, are connected with each other for relative horizontal movement as by means of clips 6 and 6 Said clips are secured to the respective boards and have offset guiding arms 7 and 7 to afford slide-ways for the complementary boards. Provided upon each board are guide marks, herein shown as a horizontal line 8 and a vertical line 9 disposed in crossed relation with respect to each other, the horizontal lines 8 of both boards being aligned with each other. i As shown, said boards aresuspended from a horizontally disposed bar 10 which, in Figs. 1 and 2, is represented as being rigidly secured to a wall W as by screws or an equivalent fastening means.

When it is desired, however, to use the apparatus in different situations said bar is secured to a portable frame such as that illustrated in Fig. 3, the bar designated by 10 is rigidly secured to the post members 11 of the frame which is indicated generally by 12.

The ,bar 10, as shown, is formed to provide along'itsv upper edge aridg'e 13 which is engageable in the hooked upper portions 14 of carriers 15, one or'more for each board.

and

for example, wherein,

Each carrier 15 is provided with a sight aperture 16 through whichmay be seen scales, or graduations, 17 and 17 (Fig. 1) provided upon the bar 10.

The divisions of each of said scales are denoted by numerals as, 24;, 26, 28, etc., which designate twice the distances, in inches, the-respective marks of scales are from a medial line-indicated by dotted line 0 in Fig. 1, and the actual distances between correspondingly designated scale marks of both scales-for example, the scale numerals 30 upon the bar 10 will be fifteen inches from the medial line 0 and thirty inches from eachother.

Each of the carriers 15 is provided with a slot 18 to receive the loop of a flexible strap S having the end of one of its folds, as 19, secured to an attachment 20 of the respective board; the end of the other fold, 21 being secure-(Mo a slide 22 which is mounted upon the respective fold 19.

Provided upon each slide 22 is a clamping lever 22 for engaging the respective slide to the associated strap fold 19 to register with a predetermined scale marking of a series of graduations 23 provided upon the strap fold 19. The graduation marks of such straps are arranged to indicate the proper regulation of the straps to suspend the boards to cause the horizontal marks thereon to be at selected elevations above the floor Fthat is to say, when the slides are respectively located to register with graduations, as indicated by 40 for example, on the straps whereupon thelatter will be adjusted to suspend the boards. at an elevation such that the lines 8 will in this instance be forty inches above the floor F. The stra s and the connections of the same with the oards and thecarriers 15 are such that the relative positioning of the carriers with respect to the scale marks 17, 17 will indicate the separation of the vertical marks 9. To verify. the correctness of the horizontal setting of the boards, a series of scale markings 24 may advantageously be provided upon the rear board 5 to'be readable with respect -to the edge 25 of the other board 5.

, The invention so far described is utilized for positioning theslant or inclination of the headlights of an automobile,.the boards 5 and 5 bein regulated in the manner above described to ocatethe lines 8 and 9 to cordoes not obtain the lamps are tiltably adjusted to cause such beam to conform to such a requirement.

For determining the vertical angular position of the spotlight ofan automobile to "have its beam of light pass beneath a horizontal line at a predetermined distanceas thirty feet, for examplein front of the spotli ht, the lines 8 may be utilized to indicate the maximum height of the spot beam by suitably raising or lowerin the same through the instrumentality of t e strap devices as hereinbefore explained.

In employing the boards for testing the spotlight beams. it is? requisite that a table or schedule of elevations of the board-marks 8 with respect to the elevation of the spot-1i ht for different automobiles should be provi ed and which, for instance, may be in the ratio of about five to six; hence, it the height ofthe focal axis of the spotlight at the car is forty-eight inches above the floor, the maximum height of the spotlight beam at its intersection by the boards should beapproximately forty inches ,9

To obviate the inconvenience of adjusting the boards vertically tor regulating a. spotlight other, means are advantageously employe-d'such for example as a rod 26 (Fig. 1)

having at its upper end a'hook 27 which is engageable over the ridge 13- of the bar 10 said rod having thereon graduations 28 which are located at elevations suitable to determine proper downward slant of the beam of a spotlight being tested, the denominating characters upon the rod being arranged to indicate themaximum heights of the beam of light projected thereon at the respective. gra nations in terms of the spotlights elevation on the car.

What I claim, is,

1. In apparatus of the character described,

complementary members having markings thereon and arranged for relative horizontal movement, a rigid support including a horizontal bar. element, and adjustable devices depending from said bar element for 'suspending said members to osition the markings theeron at selective e evations.

2. In apparatus of the character described, two board members having horizontal and vertical markings thereon, means for slidably connecting said members together for relative horizontal movement, means for supporting said members to have the horizontal marks thereon at different elevations selectively, said means being adjustable for regulating the members to have the vertical marks thereon at selective distances apart, and means for suspending said supporting means.

3. In apparatus of'the character described, complementary board members having markings thereon, devices for connecting ,said

members for relative adjustments, a horizontal bar member, means for supportin said bar member in a horizontal position, an means depending from said bar for supporting the board members at difierent elevations selectively, said means comprising for each board member a carrier slrdable endwise of said bar member, an attachment for the respective board, a strap engaging the carrier and the attachment, and means for regulating the eflective length of the strap.

4. In apparatus ofthe character described, complementary board members having markings thereon, devices for connecting said members for relative adjustments, a hori, zontal bar member, means for supporting .said bar member in a horizontal position,

said bar being provided with graduations thereon, and means depending from said bar for supporting the board members at differ ent elevations selectively, said means comprising for each board member a carrier slidable endwise of said bar member and with respect to the graduations thereon, a strap engaging the carrier, means for attachin an end of the strap to the respective boar member, and means for regulating the effective length of the stra v Signed at Seattle, gVashington, this 2nd day of'Jufie,1925.'

' JOHN D. GUISS.

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