US1198828A - Light-fixture. - Google Patents

Description

LIGHT FIXTURE.

APPLICATION FILED MAY 9. 1914.

Patented Sept. 19, 1916.

3 SHEETS-SHEET I 4 v a q R. M. DIXON.

LIGHT FIXTURE. APPLICATION FILED MAY 9. 1914.

Patented Sept. 19, 1916.

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UniTED sTATEs PATnnT erica.

ROBERT M. DIXON?, OF EAST ORANGE, NEW JERSEY, ASSIGNOE- TOSAFETY CAIR, HEATING- &7 LIGHTING COMPANY, A CORPORATION OF NEW JERSEY.

LIGHT-FIXTURE.

Specification of Letters Patent.

Patented Sept. 19, 1916.

To @ZZ whom t may concern-V.'

Be it known that-I, ROBERT M. DIXON, a citizen of thel United States, and residing at East Orange, in the county of Essex and l State of New Jersey, have invented certain new and usefuli Improvements in Light-Fix-l cal features of construction whichx will enable the light fixture to be economically constructed Vwith detachable Yand replaceable parts; to provide a simple, compact, strong and effective means for supporting the various parts of the light fixture; to provide features of construction by means of which a plurality lof lighting devices, such as in-l candescent bulbs, may be supported effectively within a finite space so as to produce a maximum of light effect within such-space; to provide a light fixture of the semi-direct type having maximum lighting capacity in,

a single fixture of minimum size; and to provide a sheath or cover for the supporting-member, in combination. with means whereby adjustments of both may be made to accommodate variations in height so as to enable the fixture to be located or hung in desired manner.

With the above objects in view, and others which will be detailed during the course of this description, my invention consists in the parts, features, elements and combinations thereof hereinafter described' and claimed.

In order that my invention may be clearly y I have provided drawings fixture embodying my invention; Fig. 2 is a top-plan view of the fixture, the screwbolts for securing .the supporting member being shown in section, Fig. 3v is a transverse section on the line 3-3, Fig. l; Fig. 4 is a bottom-plan view of the structure shown in Fig. l with the bowl or reflector removed; and Fig. 5 is a section on. the line 5 5 of Fig. 4, showing a detail of construction.

Referring to the drawings, the numeral 1 indicates the main supporting-member for theA parts of the fixture, in the form of a pipe, threaded externally at its opposite ends, the upper end of which, owing tothe illustration being that of a pendant fixture, which is illustrated as one form or embodiment of my invention, is screwed into thev pipe-head 2 of a spider or supporting-plate 3, adapted to be se'cured,.by means of screws or bolts 4, to the ceiling of a car, for example, or in any other suitable place. rIihe lower end of the member l has sleeved thereon the hub 5 of the main supporting-frame, the same being a single casting including also. a plurality of ribbed, radiali arms 6, joined attheir outer ends. by a circumferential flange or ring 1, which4 may be separable therefrom, or integrail' therewith, as desired,` The arms 6, at their inner ends,I are enlarged and connected so as to form said central hub 5, which has extending at an angle to it the several arms 8, having shoulders 8a, and providing between them a plurality of spaces adapted to receive the. lower ends 9 of a slotted, ornamental, sheath or cover l0, whichy entirely surrounds the member l, and covers the supporting-plate 3. It is intended, according to my invention, that this sheath shall be a closure or cover and sliali be ornamental, and shall extend from the ceiling, from whichv the fixture depends, to the hub 5, of the main frame. At the point of coperationof the sheath 10, with the arms 8, slots 11 are formed in the sheath to form the ends 9, the crotch of which slots rests upon the shoulders 8 of the arms 7, thus preventing circumferential movement relatively of the sheathl l0 and main-frame, and also providing a substantiall support foi' the sheath without other connections.

In order to secure the main-frame to the member l', check and jam nuts 12 are applied to the lower screw-threaded end of said member, with a washer 13 between the hub`5 and the check-nut. Preferably, the jam-nut is bored laterally and screw-tlireaded, thus adapting it for the reception of a binding-screw 14, the conical end of which will engage the screw-threads of the-member l, so as to prevent the parts, under constant jarring or vibration of the fixture,r as when applied to a car, from working loose and thus preventing the fixture from rattling..

By this means, all parts of the fixture are rigidly held and. firmly secured against accidental loosening or displacement. And by 11o reason of the adjustment provided by the means described, the sheath 10 can be for'ced or lifted upwardly tightly against the ceiling or other support so as to insure that the entire space from ceiling to main-frame shall be closed, and the sheath shall be rigidly held. rlhe ring, or flange, 7, connecting the arms of the main-frame, supports a bezel, or rim, 15, for holding the bowl 1G, which is preferably glass, and of such character' as to both transmit and reflect light.4 I do not desire to limit myself to this characteristic, however. The bezel is hinged at 17 to one side of the ring or iiange so that the bowl may swing downwardly, or outwardly, and at the opposite side is held in place by a spring-catch pivotcd to the flange at 1S, and having a depending catclrdog 19, adapted to engage the under-side, or a flange, of the bezel. The hinge for the bowl may be formed, for example, as shown in Figs. 1 and 2, by securing a plate 20, by means of screws 21, to the upper surface of the flange 7, which plate z() may be provided as usual with several bored lugs Coperating with said lugs are a plurality of bored lugs 23, secured to the bezel 15, the several lugs, when placed in proper cooperative arrangement, receiving the pivotal pin 17. rI'his is only a form of hinge connection which may be used and I do not wish to limit myself to the specific structure showen. The spring-catch, in the form shown, which is simply an example, and isnot definitive, comprises the frame or bracket 2d, secured by means of lugs and screws 9.5, to the surface of the bezel 7, and having hinged thereto, at 18, the catch-dog 19, the other end of which is extended at a right-angle thereto, as at 26, the latter housing one end of an expansion-spring 27, the other end of which is housed wit-hin the bracket 2l, as clearly shown in the sectional view of F ig. 1. `Normally, the dog is held in position by the spring so as to snap under the bezel without aid from the operator other than pressure applied upwardly to the bezel. rIhe bowl is preferably held in place by means of a plurality of curved plates 28, see detail Fig. 5, secured to the bezel, in any suitable manner, preferably removable by means of screws 29, and having a portion overlapping the flange of the bowl. These plates may be disposed about the flange at various points, so as to securely clamp the bowl in place against the inner surface of the bezel, and in order to deaden sound and cushion the bowl, and thus prevent its flange from being fractured, packing-strips 30, of yielding or elastic material, may be inserted between the cooperating surfaces of the bezel and the flange of the bowl.

To carry out the semi-direct effect of the light fixture, the bowl 16 is preferably made with a gutter 31, formed by extending the central portion 32 of the bowl in the Asame general direction, with its outer rim, or portion adjacent the rim. This provides a deep gutter or receptacle entirely around the center of the bowl, into which the bulbs 33, for example., of the light fixtures may be caused to depend. Preferably, and in order to economize space and size of fixture, and to separate the bowl from the light fixtures as much as possible, the sockets 3l, for example, of the light fixtures are supported upon the various arms 6, of the spider-casting, or main-frame, by brackets 3l, at such an angle that the bulbs will be supported at an angle other than a right-angle relatively to the arms 6. Thus, the length of the lights, including socket and bulb, may be extended in the general direction of the length or curvature of the bowl, rather than directly toward either the bottom or sides thereof. in other words,the bulbs and sockcts may be caused to lie, so to speak, rather than stand in the space between the spider and the bowl.

The fixtures shown may be of the wellknown Edison or General Electric type, and are illustrated merely as an example of a source of light.

r'he leads of the wiring system, if electric lights are used, may be extended from the ceiling, through the bracket 3, tubulaimember 1, into the bowl, and to the various fixtures and connected with the latter in any well-known manner. @n the other hand, if a different source of light be employed, the conduits may be likewise extended through the supporting-member into the bowl and connected in usual manner to the light-producing fixture. ln this connection, however, an important feature of my invention is the separable connection between the leads 35 and the light-producing devices; that is to say, l may place any form of separable connection in the lower end of the member 1,-

the parts being generally indicated by 36 and 37. The socket 36 may be secured in place by solder or other means, and the plug 37 may slide easily into the lower end of the member 1, so as to make connection with the socket 3G and be easily and quickly removed therefrom when desired. By this means, the bulbs and their supporting-brackets may all be removed without disturbing the leads 35.

ln order to give a finished appearance to the light fixture, an ornamental knob 3S may be applied to the center thereof and held in place by means of a long screw 39, the head of which may rest upon a washer 40, applied to the central tubular member of the bowl and extending through the same and through the hub of a spider formation 41, with which the ornamental device may be provided.

From the foregoing detail description, it

will readily be seen that all the parts of my fixture are separable, removable, and readily replaceable, and that the parts can be quickly talien apart, or set in place, and that all parts of the fixture can be readily examined and cleaned when desired. It will also be seen that the main-frame, owing to the separable members 36 and 37, may be removed with all the parts carried by it from the supportingmember l, by removing the check and jam nuts l2 and the washer 13.

Having thus described my invention, what l claim and desire to secure by Letters Patent is:

l. A light fixture comprising a supporting plate having moans adapting it to be secured in place; a depending cylindrical supporting member and cooperating means between the latter and the supporting plate for detachably securing the same together; a main frame and means coperating therewith and with the supporting member for detachably securing them together; detachable means carried by the main frame for supporting light producing devices; and a bowl pivotally secured to the main frame and providing an inclosure between the latter' and the bowl for the light producing devices, and means for securing the bowl in operative position.

2. A light fiXture comprising a supporting plate h a ving means adapting it to be secured in place; a depending cylindrical supporting member, and means for securing the same to said plate; a main frame and means for securing the same to said supporting member, said main frame having a plurality of radial arms connected by a circular member; means carried by the radial arms of the main 'frame for supporting light producing devices; and a bowl and means for securing the same to the circular member of the main frame providing a closure for the light producing devices.

3. A light fixture having, in combination, a tubular supporting-member; a removable mainframe carried thereby; a plurality of electric bulbs secured to the mainframe; and leads running from a source of current through the supporting-member to the bulbs, and including a separable connection between the latter and said leads and supported by the supporting-member.

4. A light fixture comprising a main supporting-frame; means for supporting the same; light producing devices removably secured to the main frame; and means yfor connecting the light producing devices with a source of power, including a conduit eX- tending through the supporting means and a separable connection between the conduit, the supporting means and the light producing devices.

5. A light fixture comprising a supporting member and means for securing the same in place; a main frame; means for de tachably securing said main frame to said supporting member; light producing devices removably secured to the main frame; a source of power extending through the supporting member and main frame and connected with said devices; and light reflecting and transmitting means removably secured to said main frame.

In testimony whereof, l affix mysignature in the presence of two witnesses.

ROBERT M. DIXON.

Witnesses Gno. E. HULsE,

MAXWELL GREENBERGER.

Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents, Washington, D. C.

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