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Publication numberUS1975282 A
Publication typeGrant
Publication dateOct 2, 1934
Filing dateSep 17, 1931
Priority dateSep 17, 1931
Publication numberUS 1975282 A, US 1975282A, US-A-1975282, US1975282 A, US1975282A
InventorsMageoch Harry Yale
Original AssigneeElectric Service Supplies Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Reflector mounting
US 1975282 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Qct. 2, 1934. H.Y. MAGEo'cl-l 1,975,282

' REFLECTORMOUNTING l l Filed sept. 17,"1951 I2 sheets-sheet 1 50ct'. 2, 1934. l H. Y. MAGEocl-l REFLEGTOR MOUNTING Filed Sept. l1'?, 1951 2 Sheets-Sheet 2 HARRY YALE MAGEOGH Patented Oct. 2, 1934 UNITED .f Isrn'resf PATE-,NT p oFFlcE Application September 17,1931, Serial No. 563,373

' AlA Claims.v

This invention relates tolightdistributing units and more .particularly toslighting units especially adapted for the purpose oi highway .and noodlighting purposes. v

.Floodflighting ,units of .thecharacternow generallyemployed are Icommonly .characterized by the fact that in eachzcase, the .reflector and lamp assembly, as a .unit,.is.positionally adjustedwith relation, to the. supporttherefor in order toiost 19 effectively project.the 1ightrays in a predetermined direction. yOnce this initial .adjustment between the nood-lighting assemblyand itssupport: isy obtained it` is-seldom .disturbed unless Aaltered circumstances necessitatea change in the direction ofthe light projection. Howevergv even though a change in the-positionalv adjustment as initially eiected may never be required, it is always necessaryrduring the period of use ofthe v -lighting unitsto voccasionally inspect, repair and clean the reliector-and its associated lamp, replace-:parts and so .,on. f To perform this. maintenance work withoutdisturbing the correctad-` justmentv for av particularz installation is :not `al- -Ways easy, this because of thefactrthat the ad justment is often-such thatfthe Aparticular part ofthe reec-tor assembly -which it isy desiredto reach is rendered inaccessible unless the same be swung into apositionother than its correctly set f position` -Once the 'lamp bodyis'swungfout ofv its adjusted posi-tion for purposes'of-nspection, repair yor, itrequires: great care to'reset it to' .its propersposition,. particularly -When this readjustment is attempted during day-light,l andA `even thenthere is -no-assurance thatthe proper V adjustment hasfbeen made.

A It is, accordingly.. amongthe- @obj ects `rofl -the present invention: *to Y'avoid the :aforementioned diiiicultiesby; providing means which is -operative to lock afloodflighting assemblyin a predeterminedly set; position;saidmeansibeing'operable to permite` the @assembly to aber freely-swung ,out ofsaid position.` for i purposes of inspection, repairs,

replacements .and yother maintenmiceI operations.

f .=As. :has 1 alreadyI beenf stated, it 1v i,s-.-1; articularly` diflicult: to effect aiproperf readjustmenaont-he oodg-.lightingfassemblyduring-daylight hours bev set to its predeterminedlyadjusted .position bydaylight, .thereby obviatingthe .necessity of.' night Work. l

Other objects of the invention and 'advantages Y sembly in its initially setposition;

resulting therefrom will appear more fully hereinafter.

"The invention consists substantially in the -combination, construction, location and: relative" arrangement of parts,'all as willappear more 'fully'. hereinafter, as shown in the accompanying drawings and as iinally pointed'out inthe appended claims. Inv theA said .accompanying drawings, which for purposes'ofillustration showth'e in vention as embodied ina nood-lighting unit of the" character more. particularly described in my prior Patent No. 1,787,279, issued December 30,19302- ".Figure 1 is a vertical sectional1"view. of a come plete. highway .and flood-lighting 'unit in 'which the present invention has been incorporated;

Figure 2 is a partial vertical sectionalvi'ew showing the flood-lighting assembly in a position otherthan its predeterminedly adjusted position of Figure l;

Figure 3 is a partial" vertical sectional view taken atright angles to'that of Figure 1 'and Figure 2 andwherein they flood-'lighting as`sem justed position. ast'o present .the reflector'witl'll its laxis vextending perpendicularly to the` hori* zontal; y ,A

vFigure 4 is a perspective" viewLshowing .the locking detentv and .itsy associated' parts' in separated relation; y p

Figure 5 isa sectional view taken 'on the line 5-5 of Figure 1;

AFigure 6 is a sectional view showing the springpressedxlocking detent operatively engaged with its .associated xed element to maintain the vasv- Figure 7 is a sectional view showing .the detent disengaged from its associated iixed element to permit free 'adjustment of. the reflector' assembly; 'and Figure 8 is a sectional view corresponding to Figure 5 .but showing a modifledarrangement thereof.

Referring now more particularly to vthe draw,- ings,. it vwill beV seen that the invention Ahas been embodied in a'highway lighting unit, |designated" .generally by the referencer numeral '10. This unit'.10, which is mounted upon a suitable standard ll, lcomprises apair of'lower annular members l2'and-l3 secured together by thesecuring elements 14. suitably secured toA and'ex-` tending'upwa'rdly from the annular member j 13 are. aplurality lof arm' or strap members 15 spacedy eduidistantly about 'the periphery of' the member 13; Securedv to the upper and free `end of the members 15 isv an annular member-:16, the

upper edge of which constitutes a seat for the top or cover 17 of the unit.

It will be understood of course that the external appearance and shape of the unit as well as the constructional details thereof are immaterial in so far as the present invention is concerned. In the present instance, however, the unit is of octagonal form and is provided in the sides thereof with a plurality of transparent or translucent glasses secured in position in any suitable manner. The cover 17, which is preferably hinged to the body of the unit, may likewise be provided with similar glasses therein.

Secured to and extending downwardly from the annular member 13 are a pair of substantially diametrically opposed supporting brackets or arms 18-18, the lower ends of which are respectively provided with apertures 19 and 20. It will be observed that while the aperture 19 is interiorly threaded, the aperture 20 is formed with a smooth bore. It is between the lower ends of the supporting arms 18-18 that the floodlighting` assembly is adapted to be pivotally mounted. This assembly, which is more particularly described in my aforesaid Patent No. 1,787,279, generally comprises a substantially U- shaped strap 21 to which is secured, preferably by welding, a second strap 22, these straps being arranged substantially at right angles to one another. These straps jointly constitute a supporting saddle for a glass reector 23, this reflector having operatively associated in xed focal relation therewith a flood-lighting lamp 24. This flood-lighting lamp 24, which is auxiliary to the usual street lamp 25 disposed in the base of the unit, is received within a socket 26 suitably secured to a lateral extension of the cross strap 22.

' It will be understood that when the oodlighting assembly, which includes the reflector, its supporting saddle, and its associated lamp, is properly mounted in position, it may be angularly adjusted about the relatively fixed axis common to the apertures 19 and 20 for the purpose of directing the rays of light at practically any angle with respect to the horizontal. This angular relation between the nood-lighting assembly and the horizontal. is ordinarily predetermined for a given installation. Having deter-` mined this angular adjustment of the assembly about its axis of rotation, it becomes important that this adjustment be not readily disturbed.

In order that this end may be accomplished, there is provided means in the form of a locking detent which is not only operative to lock the flood-lighting assembly in a predeterminedly adjusted position but which is also readily operable to permit the assembly to be rotated into another position to facilitate that inspection and repair thereof which is incidental to the general maintenance of the unit. As appears most clearly in Figures 3 to 6 inclusive, the arm 27 of the U-shaped strap 21 is provided with an aperture 28 therein, while the arm 29 of this strap is pro-v vided with an aperture for detachably receiving a laterally extending pin 30 having a force t into the smooth bore aperture 2O formed in the bracket or supporting arm 13. Adapted to be secured ilatwise against the inner surface of the opposed supporting arm 18 is a centrally apertured disk 31. This disk 31 is provided in its peripheral edge with a notch 32 and is secured in angularly adjusted position by means of a pivot stud 33. This stud 33, which is provided with a tool-engaging head 34, is formed with a threaded shank adapted for threaded engagement with the interiorly threaded aperture 19, the portion of this shank adjacent the head 34 being provided with a surrounding loose-fitting sleeve 35. Referring more particularly to Figures 5, 6 and 7, it will be observed that when the pivot stud 33 is secured in position the notched disk 31 is clamped firmly between the outer end of sleeve 35 and the inner surface of the supporting arm 13.

It will be understood that prior to threadedly securing the pivot stud 33 to the bracket arm 18, the stud 33 and the sleeve 35 are projected through the aperture 28 formed in the arm 27 of the strap 21. The pin 30 and the pivot stud 33 thus provide means `for permitting the floodlighting assembly to be rotated about a relatively iixed axis. Operatively associated with the pivot stud 33 is a locking detent 36 having an apertured branch 37 through which the pivot stud 33 projects and a manipulating branch 38. The iree end of the apertured portion 37 of the detent is provided with a laterally extending lug 39. At this point attention is directed to the fact that the arm 27 of the strap 21 is provided in one edge thereof with a notch 40 oi substantially the same shape and size as that yformed in the disk 31. Embracing the sleeve 35 and interposed between the tool-engaging head 3a thereof and the apertured branch`37 of the locking detent is a coil spring 4l which tends constantly to urge the detent into the position shown in Figure 6.

The locking detent 36 and the notched arm 27 of the strap 21 are relatively so arranged that the lug 39 of the detent is normally received 110 within the notch 40 of said arm (see Figure 7).

It will new be apparent that when the reflector assembly is rotatably adjusted about its axis of rotation so as to present thenotch 40 in the arm 27 in alignment with the notch 32 in the disk 115 31, the lug 39 of the detent will be spring pressed into the notch 32 in lsuch manner as to prevent further rotation of the flood-lighting assembly. In other words, the detent 36 thus serves to effectually retain the flood-lighting assembly in its predeterminedly adjusted position.

Obviously, with thedetent 36 engaging both the arm 27 of the reector supporting strap and the disk 31, it ispossible to angularly shift the floodlighting assembly into any predeterminedly desired position by loosening the pivot stud 33 to permit rotation of the disk 31. Having thus determined the desired position in which the floodlighting assembly is to be maintained, the pivot stud 33 is again tightened so as to clamp the disk 31 against further rotative movement. Thereafter, in order to shift the flood-lighting assembly out of its initially adjusted position, it becomes merely necessary to so manipulate the branch 38 of the locking detent as to disengage the lug 39 thereof from the notch 32 of the relatively xed disk 31. The assembly may then be rotated into any desired position and when the inspection or other maintenance work in connection therewith is completed it is angularly 140 adjusted about its axis of rotation until the lug 39 again engages the notch 32 of the stationary disk. The assembly is thus definitely re-established in its initially and predeterminedly adjusted position.

Figure 8 illustrates a modification of the arrangement shown more particularly in Figure 5. In the latter arrangement, it will be observed that upon removing the stud 33 the organization between the parts 31, 27, 36 and 41 is disrupted. 150

rI'his disorganization of the parts may Well be avoided by providing a unitary assembly such as is shown in Figure 8 wherein the sleeve 42 is {formed at one end with a shoulder or flange 43 and at the opposite end with a reduced portion 44. The disk 45 (the equivalent of disk 31 in Figure 5) is secured, as at 46, to the reduced end 44 of the sleeve 42 in such manner as to prevent axial displacement therebetween. The sleeve 42 is initially projected through the arm 27 of the U- shaped strap and through the arm 37 of the locking detent 36. A coil spring 47 embraces the sleeve 42 and is interposed between the shoulder 43 thereof and the arm 37 of the locking detent. The stud 48 is projected freely through the bore of the sleeve 42 for threaded engagement with the supporting arm 18, the arrangement being such that when the stud 48 is Withdrawn the disk 45, the sleeve 42, the locking detent 36 and the spring 47 remain in the assembled relation shown and are not separable from the arm 27 of the reflector supporting strap 2l. It will be understood, of course, that the present invention is susceptible of Various changes and modifications without departing from the real spirit or general principles thereof and it is' accordingly intended to claim the'same broadly, as well as specifically, as indicated by the appended claims.

What is claimed as new and useful is:-

1. In a lighting unit, in combination, a reflector and lamp assembly, a relatively fixed support having a stud xedly secured thereto and about which said assembly is angularly adjustable, and spring-pressed means rotatably mounted upon said stud and adapted to lock said assembly against relative movement with respect to said support, said means being shiftable out of locking position to permit free angular movement of said assembly.

2. In a lighting unit, in combination, a reflector assembly adapted for rotation about a relatively fixed axis, a support for said assembly, a springpressed detent operatively associated with said assembly, and means associated with said support and engageable by said detent to lock said assembly in predeterminedly nxed position, said means being angularly adjustable about said axis to vary said predeterminedly xed position, said detent being rotatable with said assembly and arranged to assume its locking position automatically upon the return of the assembly into said predeterminedly iixed position.

3. In a lighting unit, in combination, a relatively xed support, a pivot stud carried by said support, a reflector assembly journalled upon said stud, a spring-pressed detent shiftable with said assembly, and means retained in fixed position by said stud and engageable by said detent Whereby said assembly is locked in an initially adjusted position.

4. In a lighting unit, in combination, a relatively fixed support, a pivot stud carried by said support, a reflector assembly journalled upon said stud, a spring-pressed detent shiftable with said assembly, and means retained in xed position by said stud and engageable by said detent whereby said assembly is locked in an initially adjusted position, said means being angularly adjustable together with said assembly upon loosening said stud whereby to obtain a different initially adjusted position for said assembly.

5. In a lighting unit, in combination, a relatively xed support, a pivot stud carried by said support, a reflector assembly journalled upon said stud, a spring-pressed detent shiftable with said assembly, and means retained in fixed position by said stud and engageable by said detent whereby said assembly is locked in an initially adjusted position, said detent being disengageable from said xed means whereby to permit said assembly t0 be rotated out of said initially adjusted position.

6. In a lighting unit, in combination, a relatively iixed support, a pivot stud carried by said support, a reflector assembly journalled upon said stud, a spring-pressed detent shiftable with said assembly, and means retained in iixed position by said stud and engageable by said detent whereby said assembly is locked in an initially adjusted position, said detent being operative to automatically re-engage said iixed means Whenever the reector assembly is rotated into said initially adjusted position.

7. In a lamp of the class described, a base, a globe frame mounted on the base and having a movable top, a lamp support mounted on the base and extending into the globe frame, a lampy and reflector carriage pivoted on a horizontal axis to the lamp support and adjustable about said axis into diierent inclinations, adjusting meansthereincluding a member carried by the lamp support and having a single notch therein, said member being adjustable about said `horizontal axis to vary the radial angle of the notch, a latch carried by the lamp carriage and coacting with said member and entering said notch whereby the carriage can be tilted relatively to the support and said member disengaged from the notch and upon the return of the carriage, the latch Will re-enter the notch and relocate the lamp.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2905808 *Aug 10, 1956Sep 22, 1959Holophane Co IncOutdoor lighting fixtures
US4104712 *Feb 1, 1977Aug 1, 1978Erich HafnerOutdoor light fixture
US4232361 *Dec 7, 1978Nov 4, 1980Mcgraw-Edison CompanyAdjustable light fixture
DE1111574B *Sep 30, 1957Jul 27, 1961Licentia GmbhLangfeldleuchte fuer gerichtete Strahlung mit ausgedehnten Lichtquellen, insbesondere Quecksilber-Hochdrucklampen
DE19508905A1 *Mar 11, 1995Sep 12, 1996Sl Sonderkonstruktionen Und LeBeleuchtungs-Einheit
DE19508905B4 *Mar 11, 1995Apr 26, 2007Sl, Sonderkonstruktionen Und Leichtbau GmbhBeleuchtungseinheit
U.S. Classification362/227, 362/306, 362/274
International ClassificationF21V17/02
Cooperative ClassificationF21V17/02
European ClassificationF21V17/02