US1822019A - Lighting fixture - Google Patents

Description

Spt. 8,1931.

. J. J. DEsMoND LIGHTING FIXTURE Filed oct. 12, 192B Patented Sept.

UNITED STATES PATENT OFFICE l JOHN J. DESMOND, OF I-IUBBARID WOODS, ILLINOIS, ASSIGNOR, .'BY MESNE ASSIGNMENTS, TO LINE MATERIAL COMPANY, OF SOUTH MILWAUKEE, WISCONSIN, A CORPORATION OF DELAWARE LIGHTING FIXTURE Application filed October 12, 1928. Serial No. 312,094.

This invention relates particularly to means for connecting glass refractors of the two, three and/or four way type with a lighting fixture.

It is necessary that refractors of this type be held against rotation to insure their concentrated rays being cast in the proper direction and heretofore this has been accomplished by notches formed in the glass refractor with which projections carried by a metal refractorholder engaged. vWhile this manner of preventing rotation of the refractor with respect to its holder is effective, it is objectionable in that frequently rotational adjustment is required, which can be obtained only through turning the entire fixture on its support and very often the construction of the fixture or the fact that its attaching-portion has corroded into its mounting makes this course practically impossible. Therefore, the present invention has as its primary object to provide means for connecting a refractor with a fixture whereby rotational adjustment independently of the fixture is readily obtainable.

Another object of this invention resides in the provision of means for connecting a refractor with itsmounting member, which remains undisturbed during removal or opening of the refractor for cleaning.

And a more specific object of this invention resides in the provision of a ring member having inwardly extended projections with which notches formed in the refractor engage and means for securing the ring memberv in the refractor holder of a lighting fixture against rotation, whereby adjustment of the refractor may be effected by turning the ring member independently of the fixture.V

With the above and other objects in view which will appear as the description proceeds, my invention resides in the novel construction, combination and arrangen'ient of parts substantially as hereinafter described and more particularly defined by the appended claims, it being understood that such changes in the precise embodiment of the hereindisclosed invention may be made as come within the scope of the claims.

In the accompanying drawings, I have ilvised for the practical application of thel principles thereof, and in which:

Figure 1 is a side elevational view of a portion of a street lighting fixture illustrating my improved refractor mounting means secured thereto withV parts broken away and in section;

Figure 2 is a fragmentaryperspective view of the refr-actor holder with the separable ring in position and illustrating a portion of the upper periphery of the glass refractor in which the nctchesare formed; l

Figure 3 is a fragmentary sectional view taken through Figure 4t on theplane of the line ei-3, and

Figure 4L is a top view of the refractor holder with a refractor assembled therewith and with a portion broken away anch in section.

Referring now .more particularly to the tioned therein to receivea lamp 7. A reflector 8 and a refractor mounting member 9 are secured to the housing by bolts 10 or the like and therefractor mounting member 9 is provided with a downwardly projecting hook or retaining member 114 and a pair of spaced downwardly projecting lugs 12 apertured at their lower outer ends by which a refractor holder 13 is connected with the fixture.

a channel shaped ringmember and is hingedly connected with the mounting member 9 by a pivot pin 14 bridging the outer ends of a pair of outwardly and downwardly extended arms 15 formed integral with the holder, the pivot pin being engaged in the hook portion of the memberV 11. The holder 13 may thus be swung on its pivot 14 from a closed position, adjacent the lower edge of the mounting member 9, to a position disposed at an angle thereto to permit access to the interior of the fixture and is maintained in its closed position by a finger 16 which projects between the arms 12, in which position it is secured by a pin or key 17 extending through the apertures at the lower outer portions of the arms.

A refractor 18 which may be of the two, three or four way type and which may be formed of a double thickness of glass as illustrated, is provided with a laterally extended flange 19 at its upper periphery which rests on the lower portion of the channel shaped refractor holder 13 to support the refractor. A ring member 2O formed of a relatively thin band of metal having inwardly pressed projections 211encircles the flange 19 of the reiiractor and is positioned between the outer wall of the flange and the inner wall of the holder 13 with its projections 21 engaging notches 23 in the flange 19 of the refractor.

' A plurality of clips 2li bent to an obtuse angle and vprov-ided with a key slot 25 are secured to the inner wall of the holder 13 at spaced intervals by screws 26 or the like that pass through the substantially vertical leg 27 of the clips engaging their upper edges with the wall of the refractor holder and clamping the ring 20 against rotation, the lower or substantially laterally directed legs 28 of' the clips Qi engaging the upper periphery of the flange -19 ofthe refractor and maintaining the same against vertical displacement.

Thus Ait will be seen that to adjust the refractor so that its concentrated rays are cast in the desired direction it is but necessary to loosen the screws i6 which clamp the clips 2i against the ring member 20. This permits the refractor together with the ring 2O to be turned in the channel shaped holder 13 to any desired position. It will be noted that the keyhole slots 211 are directed at an upward angle so that the clips 24 may be properly adjusted to exert proper pressure on the upper periphery of the flange 19 of the retractor and restrain all longitudinal movement thereof with respect to the holder.

From the foregoing description taken in connection with the accompanying drawings it will be readily apparent to those skilled in the art to which an invention of this character appertains that I provide novel means for securing a refractor in i-ts holder which means readily permits adjustment of the concentrated rays of the refractor independently of the fixture proper and in which opening of the refractor to permit access to the interior of the fixture does not disturb the setting thereof.

I Claim;

1. ln combination with a lighting fixture of the character described, and including a refractor holder and an asymmetrical refractor adaptedto direct concentrated rays of light in predetermined directions carried thereby, the holder being hingedly mounted for swinging movement to and from closed position to permit access to the fixture interior, a ring member non-rotatably connected with the refractor, and means adjustably securing the ring member in the refractor holder to rigidly connect the refractor with the holder7 said means enabling the lrefr-actor to be adjusted with respect to the fixture.

2. In combination with a lighting fixture of' the character described, including a refractor holder and an asymmetrical Vrefractor adapted to direct concentrated rays of llight in predetermined directions carried thereby, the refractor holder being hingedly connected with the fixture to enable it and the refractor to be swung to open position to vrpermit access to the fixture interior, and means for securing the refractor in the ,holder,.said means comprising a protecting ring for the refr-actor non-rotatably connected therewith, and means releasably clamping the ring in the holder whereby the refractor may .be adjusted independently of the fixture per se to direct concentrated rays of light vfrom the fixture in any desired direction.

3. In combination with a `lighting fixture of the character described including a refractor holder and a refractor carried thereby, the holder being hingedly mounted for swinging movement to and from closed position to permit access to the fixture interior, a band like ring member surrounding part of' the refractor, projections formed on said ring member and received in depressions in the said part of the refractor vto non-rotatably connect the ring member with the refractor, and means for adjustably securing the ring member in the refractor holder to rigidly connect the refractor with the holder, said means enabling the refractor to be yadj usted with respect to vthe fixture.

4. In combination with a lighting fixture including a ring like refr-actor Aholder and a refractor carried thereby, the holder being movably but non-rotatably connected with the fixture to enable the same to -be moved to permit access to the fixture interior and having an annular abutment to support the rcfractor, a band like ring member surrounding the portion of the refractor within the holder and disposed between the -annular wall of the holder and the refractor with a portion projecting above the retract-or, projections extended from the band like ring member and received in notches in the adjacent part of the refractor to non-rotatably connect the band like ring member with 'the refractor, and means for releasably clamping the band like ring member in the holder, said means also engaging the refractor to hold the same against longitudinal movement.

5. In combination with a lighting fixture of the character described, including a refractor holder movably but non-rotatably connected with the fixture and an .asymmetiso rical refractor adapted to direct concentrated rays of light in predetermined directions carried thereby, and means for adjustably scf curing the refractor in the holder, comprising a ring member non-rotatab1y connected with the refractor, and means for securing the ring member against movement in the holder.

In testimony whereof I have hereunto axed my hand.

JOHN J. DESMOND.

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