US1748278A - Lighting fixture - Google Patents

Description

Feb. 25, 1930. A. R. CLARK LIGHTING FIXTURE Filed Feb. 18. 1928 Patented Feb. 25, 1930 UNITED, STATES PATENT OFFICE ARTHUR R. onnnnor CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF T GEORGE J.

KOHN, OF CHICAGO, ILLINOIS LIGHTING FIXTURE This invention relates to improvements in lighting fixtures and it consistsof the matters I hereinafter described and moreparticularly 1 pointed out in the appended claims. Ceiling light fixtures as heretofore made include a ceiling plate froinwhich depends a substantially bell shaped open bottom dome to which the neck of a glass shade or bowl is attached usually by thumb screws. To clean the interior of the bowl or to renew the electric lamp or bulb used therewith it is necessary in this kind of a fixture to first loosen these screws before the globe can be removed, to give access to the interior of the bowl or the lamp. This work is usually carried on from the top of a step ladder andrenders the task somewhat difficult and in many cases results in dropping and breaking the bowl.

The primary object of the invention is to provide a fixture wherein the bowl may be readilybrought into a position convenient for cleaning the interior thereof or renewing the lamp without a complete disconnection 1-2 between the dome and bowl in a manner preventing the dropping thereof during the cleaning of the same or the renewal of the lamp or light.

A further object of the invention is to proi I vide in such a fixture a bowl retaining ring which is hinged at one side to the dome and has means at the other side thereof whereby the ring may be locked to the dome to hold the bowl in its proper position with respect thereto or maybe manipulated to unlock the ring so that the same together with the bowl may be swung into an open position convenient for cleaning the interior thereof or for renewing the light or lamp in the dome.

These objects of the invention as well as the many advantages thereof will more fully appear as I proceed with my specification.

In the drawings I Fig. 1 is a view partly in side elevation and partly in section of a lighting fixture embodying the preferred form of my invention. I

Fig. 2 is a horizontal sectional view as taken on the line 22 of Fig. 1. Figs. 3 and 4 are detail vertical sectional views on an enlarged scale through portions of the dome and bowl as taken on the line 3'3 and H respectively of Fig. 2.

Fig. 5 is a detail view in elevation showing' the hinged connection between the dome and bowl ring and which will be more fully referred to later.

Referring now in detail to that embodiment of the invention illustrated in the accompanying drawing, 1 indicates as a whole a dome preferably made in two parts 2 and 3 hereinafter termed respectively the top and bottom parts. Each part has a neck of smaller diameter and each neck includes an inwardly extending annular flange t and 5 respectively, said flanges being secured together by screws 6 as best shown in Fig. 1. In the opening defined by said flanges is a lamp socket body 7 secured therein by a bushing 8 that screws on to the shell contact of the lamp socket in the manner well known, said shell contact being adapted to have threaded into it, a lamp 9., The enlarged in:

verted base of the top part of the dome is adapted to be secured to a ceiling 10 in any suitable manner while the enlarged open bottom end of the bottom part 3 of the dome is defined by an annular band portion or flange 11 of a diameter approximating the base of the top part of the dome. When a lamp 9 is in the socket body 7, said lamp depends below the bottom edge of said flange 11. On the outside of the flange 11 at one side thereof, is a pair of laterally spaced ears 1212 between which a portion of the flange is removed for a purpose to appear later.

Associated with the flange 11 and normally positioned within the same is a ring 13 which constitutes the supporting element for a glass bowl 14:. Said ring is a trifle smaller in diameter than said flange and while relatively thick is of a height less than said flange and is provided at a plurality of points on its top side with a plurality of pairs of upstanding bosses l5 and 16 respectively adapted to engage against an inturned shoulder 17 on the bottom dome part 3 at the top of said flange 11. Said ring is provided at a point between the bosses 1515 with a lateral extension 18, which is disposed between and is pivoted to the ears 1212 on the flange 11 site the extension 18, the ring has a notch which-opens through the bottom edge of the ring so that a thumb screw 21 threaded into the flange 11 may be caused to enter said notch to secure the ring in place Within the flange. The bosses 1515 each have. an integral inwardly extending stud 15" while the bosses 16-16"each carry a set screw 16 These set screws are flat headed and to ac commodate them, the outer surfaces oi the bosses and adjacent ring portions are flattened off as best shown in Fig. 2 to provide the necessary room for the heads of said set screws. The studs and screws just mentioned are-adapted to so engage in the top flange portion or neckl l oi'the globe as to secure the same in the ring/ Assume that it is desired to clean the interior of the bowl or to change the lamp therein. As these operations are performed by a person on a step ladder, care of course is required and with the fixtures as hereto fore made, the dropping of the bowl when removig the same was no uncommon occurrence. With my improved construction, it is only necessary to loosen the thumb screw 21 so as to withdrawits inner end from the notch 20 in the ring. The ring with the bowl re- 7 tained therein is then swung downwardly about the hinge pin 19 as an axis into approximately the dotted line position shown in Fig. 1, thus presenting the interior of the bowl l for easy access or for the removal and renewal of; the lamp '7'. Thus there" is no complete separation or disconnection between the dome and bowl and the bowl is han-gingly supported from the dome in a manner pre-.

venting its accidental dropping but in aposition convenient for either cleaning the bowl to the cost of manufacture and as it is simple,

it may be readily manipulated.

While in describing my invention, 1 have referred to many details as to form and arrangement of the parts thereof, the same is to be considered as by way of; illustration only so that I do not wish to be limited thereto except as may be pointed out in the appended claims. i

I claim as my invention :7

1. A lighting fixture comprising a domehaving anannul'ar band, portion atone end thereof, provided with spaced ears, a bowl supporting ring normally positioned within said band portion and of a diameter smaller than said band portion and having an extension position between and hinged to said cars, a plurality of studs on said ring to engage in a part of the bowl and a thumb screw carried I by the band portion opposite the hinge and adapted to releasably engage the ring.

2. A lighting fixture comprising a dome having an annular band portion, a bowl sup porting ring normally positioned within and wardly extending annular shoulder at the top end thereof, a bowl supporting ring normally positioned within and of a diameter less than that of said band portion and hinged at one side thereto and means carried by the band portion oppositethe hinge to releasably secure said ring Within said bandportion, said ring having arcuately spaced bosses on its top edge to engage said annular shoulder to position said ring with its top edge spaced 7 from said annular shoulder. V

In testimony whereof, I have hereunto. set my hand, this 9th day of February, 1928. ARTHUR R. CLARK.

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' I eluding an annular band portion wlth an m- I V

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