US1330585A - Lighting-fixture - Google Patents

Description

B. I. AND O. L GRIGSBY.

LIGHTING FIXTURE.

APPLICATION FILED FEB. 23, ISI?.

'1,330,585'. ,mend Feb@ 10,192@

2 SHEETS-SHEET I.

B. J. AND 0. E. GRIGSBY.

UGHTING FIXTURE.

APPLICATION FILD FEB. 23.1917. 1,330,585. Patented Feb.10,1920.

2 SHEETS-SHEET 2- i UNITED STATES PATENT OFFICE.

y BElR/.IRAIV'2l'.` GRIGSBY AND OWEN E. GRIGSBY, 0F PEORIA, ILLINOIS.

LIGHTING-FIXTURE.

Specification of Letters Patent.

Application filed February 23, 1917. Serial No.. 150,559.

T 0 all whom t may concern.'

Be it known that we, BERTRAM J.' GRiGsBY and QWEN E. GRIGSBY, citizens of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Lighting-Fixtures; and we do hereby declare that the following is a full5 clear, and exact description of the invention, which will enable others skilledin the i art 'to which it appertains to make and use the same.

This invention relates to lamp fixtures in general and particularly to an electricl lamp fixture wherein is employed a novel means for quickly attaching and detaching the shell or casing of the lamp socket which itself supports and carries a shade holder or reflector, or which also is adapted to support the usual canopy where the lamp is sus ended-from the ceiling.

ne of the objects of the invention is to providev a novel manner of combining with an electric lamp socket a shade or reflector or globe, the construction being such that the said reflector, shade holder .or globe may be readily placed in position or detached without requiring holding screws or other like holding parts.

Another object is to provide a structure for an electric lamp socket wherein a shade holder may be readily attached, its removal fully exposing the terminals of the conducting wires and which when replaced will en tirely cover and protect said terminals from all danger of short-circuiting.

Still another object is to provide a structure of the class described in Which the terminal wires and the binding screws for the same can be instantly exposed Without taking down the entire structure'and whereby the various parts can be readily reached.

In addition, an object is to provide new forms of supporting structures for a reflector, shade or globe, whether used with electric lamps or other sources of illumination.

A still further object is to provide a i'ixture so arranged, when the lam is suspended from the ceiling, that the shel or casing in closing the lamp socket may, in acting also in the capacity of a holder for a reflector or a shade, likewise act to support the socalled canopy whichc:4vers the parts of the structure from view, i

In bringing-.out the invention it is the vproduced at low cost.

t changes mayl l purpose, besides the above, to furnish a structure whose parts will be proof against deterioration by. atmospheric action; that will be weather-proof in that it will not al- -low moisture to enter or come in contact with the current carrying parts; that the current carrying parts will be so inclosed and insulatedI that there will be no danger of shocks to persons handling them, and that there will be Afurnished a construction Patented Feb'. 10, 1920.

by which convenient and ready access to the terminals of theV leading-in--wires is possible. .1 y

Devices of this class of which `we are aware do not have all these desirable fea.

tures but such features are combined herein in a very simple construction that can be To the end that the invention may be understood, the accompanying drawing is provided in which two embodiments of the invention arev shown as indicating the man ner in `which the desired objects maybe accomplished, being understood that slight from the inventive` idea.

Figure l is a sectional socket and means of securing 'or attaching a shade holder, shade, reflector or the like. Fig. 2 is an elevation in part section of a portion of the shade andan upper terminal extension to `engage the attaching means illustrated in Fig. 1;"

Fig. ,3 is a horizontal section ofthe upper terminal extension shown in Fig. 2;

elevation of a lampv be made without departing Fig. "4 shows, in perspective, one of the spring members or fingers. y

Fig. 5 is av sectional elevation of a slightly modified form of socket and shade holding means.

Fig. 6 is a plan of an shown invFig. 5.

Fig. 7 is an elevation thereof.

Fig.`8 is a partial sectional elevation of a lamp socket and shade holding means insulating sleeve showing the manner of supporting a canopy;` and Fig. 9 is a similar view showing the shade holding or reflector holding means the shade or reflector and the canopy as a united structure. Y

Referring to Fig'. 1, A indicates a cap having threaded into its upper portion a supporting part -or conduit for example,

through which is carried the conducting` j 'wires C; D is the base portion for a lamp socket of porcelain or suitable insulating material, E indicating'a socket or shell of the Edison type for receiving the lamp, not shown.

F and G are the usual terminal members to which the wires C C are connected by the usual screws H, the said base being recessed at J ,for example, to permit the conducting wires C to be carried to the said screw.

K indicates a series ofyspring lingers secured to the under surface of the cap A and having inwardly extending shoulder portions L-clearly shown in Fig. 4, the shoulder being preferably convex in form comple-v mentary to the concave depression O.

' In Fig. 2, M indicates a portion of a shade or relectorto the top of which is sel cured, or from which may extend as an inte'-l gral part, a casing N provided with depressed portions O formedby shearing the metal at a, for example, and forcing the said portions O inwardlyso that they take up the position substantially shown in Fig. 3. These depressed portions may'correspond in number to thespring ngers K ormay be multiples of said lingers. n

P is a sleeve of orcelain or other insulating material snug y fitting within the cas-I ing N and havin a series of grooves Q extending longitudlnally thereof, in its outer surface, to receive the described inwardly extending portions O, see Fig. 3, as well as to furnish Ventilating passa es.

The said sleeve is provide with two bores R S of different diameters, theupper one being largest, and when placed in position` as indicated in broken lines as in Fig. 1 the sleeve covers the terminal screws H so as to eliminate chance of short circuiting, the smaller bore S receiving and likewise covering the threaded shell E. i

Any means may be adopted for suspending the lbase D from the cap A although the conducting wires C may be suicient for this purpose since there is no weight to be supported except that of said base and its shell E until finally assembled -when it rests on they shoulder R of the sleeve P.

In attaching the shade, in which the sleeve P is preferably permanently held, and which may rest upon any bead portion of the shade such as b, :it is pushedy up between the spring fingers K,.the shoulder L of the latter en- -tering the recesses of the shade whereby the latter is positively held. Since the bottoms of the recesses are of concave form, in order to remove the casing N it is merely necessary to slightly rotate it with the result that thengers K ride out of the 'depressions upon the outer surface of the casingwhereupon the latter can loe-drawn away romthe direction of the cap' A thereby at the same movement exposing all of the parts'of the base D and its shell E.

In Fig. 5 the cap- 2 corresponds to A f ,it from the cap 2 it is gers are made to ride up u on its cylindriwhile the conduit 3 corresponds to B. 4 is a strap secured to the under side of the cap and 5 is the lamp base suspended from said strap by means of a screw 6, for example,

which lies in the bottom of a recess 7 of 70 said base.

sponding to N provided at its lower ex-v tremity with one or more screws 1 6, for supporting a globe, reflector o r shade 17.

The casing 15 is furnished with depressed portions 18I corresponding to O in Fig. 2. 19 are springin ers secured -to thecap 2 and of slightly dierent construction from those shown in Fig. 1 in that their terminal ends are bent upwardly thereby providing Ihooks upon which the casing 15 is suspended, said ends passing through the openings formed byshearin the metal as describe with reference to the shell N.

In detaching the casinfg 15 so as to remove rst pushed up into the lcap a distance sullicient to permit the .parts of the casing to clear the upturned ends. Then'by rotating said casing the finca lv portion whereupon sai casing may be withdrawn.`

20 is an insulating sleeve somewhat the same as that shown in Fig. 3 and is t govided wlth grooves 21 to recelve the descrl d por- 105 vtions 18 and also for roviding for ventilation as before. This s eeve is secured in the casin by' means of one or more screws 22 exten ing through holes 23 in the sleeve and threaded into an overturned portion of the casing 15. Other means of securing said sleeve in position may be resorted to however.

Said sleeve`20 answers in the same capacity as the sleeve P-th'at of fully protecting the terminal screws 10 and. exposing them upon the removal of said casing as described.

The depressions in the metal which re-` ceive the fingers K, 19, besides serving as the securing means for the casing provide means through whichthe heat may escape after |arising through the grooves Q, 21, of the sleeves P, 20. l

The structures described herein are ada table for many forms of fixtures especially as regards the attachin means for the re- `lector or shade and w ether or not it is being lparticularly 'adapted for large and heavy structures often required in lighting large areas. v l

The structure will be found an economical advantage in that interchangeability of reiectors and globes may be quickly made. For example, if the caps A,.2 happen to be in use with a particular style or size of' shade, globe, or reflector and it is desired to change the latter for other sizes or styles the change can be readily made without disturbing the electrical connections.

Also, a standardization of the parts results in a reduction oli-investment in -respect to the stock necessary to be carried, having regard to the wide range of sizes and types common to the requirements of the trade.

It is Well known to those familiar with lighting fixtures that in order to take down the parts for changes or repairs it is first necessary to turn one or more screwsI terminals it is again required to remove or i turn one or more screws so as to release the covering shell of the fixture. This requires time and care and often the inconvenience of loss of the lscrews lattends such work.

In our device, however, the mere rotation ofthe casings N, 15, relatively to the fingers K, 19, results in the ready separation of said casings together with the simultaneous removal of the shell covering the socket terminals. The latter being now exposed to view also lies in a position conveniently in reach of the screw-driver.

Fig. 8 shows a casing 24 substantially the same as that shown at 15 in Fig. 5 and in addition to supporting the parts M, 17 of Figs. 2 and 5 it supports a canopy 25 which is that member usually employed with lighting fixtures to lie against ,the ceilingfor covering the outlet box or other parts, the contracted lower edge of said canopy snugly fitting around said casing 24 and resting on the fiared ortion or shoulder 26 thereof.

In this gure a plate 27 is secured to the ceiling or to the outlet box, not shown, and carries the springs 28l which correspond to K and 19 of the other figures.

In Fig. 9 thecasing represented at 29 is continued into a shade, refiector or other desired part 30, as in Fig. 2, for example, the lower edge of the canopy 31 being rolled into the parts just described to'constitute a unitary structure, or said canopy may be a separate part and rest upon the part 30 as in Fig. 8, if desired, all being Within the meaning of our invention.

In Figs. 1 and 5 where the described structures are suspended from the supporting conduit B the canopy, of course, may also be used and may rest upon the part M or the .casing 15.

This provision of thus supporting the canopy is one of considerable importance, it being clear that when the casing is separated from the supporting structure the canopy will likewise come away with it exposing the electric terminals and other parts, the time required to remove the whole being but a moment.

. By this arrangement where' the canopy is a part separate from the casing it may be of' any size and form but uniform as to the diameter of' the opening receiving the casing. However, thecanopy may rest upon the shade or lother part carried bythe casing if desired, said shade or part being suitably arranged for centering said canopy thereon.

lVhere indirect lighting is employed a refiecting medium may be held in place in substantially the same manner as the canopy against which the light may be cast. It is thus seen that the method of supporting a canopy is not limited to a canopy alone. Ve claim:

1. A fixtureof' the character described including in its construction a lamp receptacle, a support for the receptacle havlng an over` hanging covering portion spaced-above the latter providing an open entirely free air space, said portion being of greater diame.

ter than such receptacle, the latter having terminals exposed below said portion, a

cle, a support for the receptacle having an open entirely free air space, said portion being of greater diameter than such receptacle, the latter having terminals exposed below said portion, a shade holder lncludinv a shell to inclose the receptacle and space therefrom to provide `a passage communi- `eating with the space between the latter and said portion, and coacting parts on the shell and sald portion to engage one another suspending the former from the latter in spaced relation, one of said parts being resilientt 3. A fixture of the character described includlng in its construction a supporting part, an electric lamp socket suspended beneath it havin exposed electric terminals at its sides, a s ade holder including a caslng for inclosing the said socket and its terlninals separated therefrom by an annular space, and resilient means carried by the i supporting part to engage the shade holder,

there belng recesses in the latter communieating with the interior of the said casing for receiving said means and for ventilating the said interior.

4, A fixture of the character described including in its construction a supporting part, an electric lamp socket suspended beneath it having exposed electric terminals at its sides, a shade holder including a casing for inc losing the said socket and its terminals separated therefrom by an annular space, and resilient members carried by the supporting part to engagev the shadeholder, the Walls of the holder having a series of depressions therein, the said walls being rounded into such depressions whereby the Said resilient members `When in engagement with the latter will be forced out in a rotating movement of the said holder.

5. -The combination with a supporting part including an electric lamp socket and wire terminal securimgf-means lying outside .said part, of a shade holder, a series of resilient portions carried by the supporting part to engage said shade holder, the latter including a series of depressions corresponding to and adapted for receiving the portions whereby to secure the supporting part and holder in connected relation, and an insulating sleeve within the`shade-h0lder inclosing the lamp socket and removable with said holder from' around said socket to eX- pose the same.'

6. The combination with a supporting part having the form of a hood, an electric lamp socket suspended beneath the same and having wire terminal securing-means below and outside the supporting part, a shade holder inclosing the socket including a sories of depressions terminating in ventilating openings, a series of resilient lingers carried by the supporting part to engage jin lthe depressions, and an insulating sleeve within the holder inclosing the socket and its terminal means and having openings extending along it communicating with the depressions and their openings.

7. The combination with a supporting part, an electric lamp socket suspended beneaththe same, a shade holder part, including a sleeve carried by and removable with the said shade-holder to inclose thesocket, a series of openings in the shade holder and the insulating sleeve for Ventilating purposes, and resilient ineans'carried by the supporting part to engage the shade holder.

In testimony whereof We aiiiX our signatures, in presence of'two witnesses.

BERTRAM J. GRIGSBY. OWEN E. GRIGSBY. Witnesses:

Ro'soon HERGET, L. M. THURLOW.

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