US1912683A - Electric light fixture - Google Patents

Description

June 6, 1933. H. L. BERMAN 1,912,683

ELECTRIC LIGHT FIXTURE Filed May 9, 1951 3 Sheets-Sheet 1 FIG. 1.

INVENTOR.

Hafi LEJEr'Tnan ATTORNEYS.

ELECTRIC LIGHT FIXTURE Filed Mdy 9, 1931 3 Sheets-Sheet 2 INVENTOR.

Hal PH L.EEFTTLELTL mm 142 m J g ATTORNEYS.

June 6, 1933. H. L. BERMAN 1,912,583

ELECTRIC LIGHT FIXTURE Filed May 9, 1951 3 Sheets-Sheet 3 FIG. 13.

INVENTOR.

H3113 LElerman BYOZZ,ZZ&Z I ATTORNEYS.

Patented June 6,1933

reii eae HABRY .Ii-. BE1RMAN. 01" ROXBURY, MASSACHUSETTS ELECTRIC LIGHT FIXTURE Application filed May 9, 1931.

The present invention relates to electric light fixtures and more particularly to ceiling fixtures of the canopy type.

The primary objectof the invention is to provide means for effectively securing porcelain lamp. receptacles against rotation in ceiling canopies. V

A further object resides in thearrangement whereby the conventional type of proces lain ring receptacle may be effectively se cured in the ceiling canopy against rotation.

A further object resides in the novel arrangement whereby the securing means for the lamp receptacle may be associated with the conventional form of ceiling canopy without altering the general construction of the canopy. a

A further object of the invention is to provide securing means for lamp receptacles of electric light fixtures whichmay be readily incorporated in the fixture without materially increasing the cost thereof.

Other objects and advantages of the invention will be apparent during the course of the following detailed description, taken in connection with the accompanying drawings forming a partoflthis specification and m. which. draw1ngs:

Figure 1 is a vertical section thru a conventional type of ceihng fixture showing the securing means applled for preventing rotation of the lamp receptacle within its supporting canopy. V

Figure 2 is anenlarged section on the line 2 2 of Figure 1. y i

Figures 3, 4 and 5 are enlarged sectional views taken thru a ceiling fixture and showing modified forms of securing means for the lamp receptacle.

Figure Gis a sectional view thru a ceiling fixture and showing a further meansof securing the lamp receptacle against rotation by means of bendable fingers;

Figure 7 is a section on the line 77 of Figure 6.

Figure 8 is a sectional View thru a ceiling fixture showing the use of set screws for preventlng rotation of the lamp receptacle.

Figure 9 1s a section on the line 99 of Figure 8. Figure 10 is a fragmentary vertical seclower portion of the upper canopy section 5.

Serial No. seaas tion thru a ceiling fixture and showing a strap and clamping screw arranged for hold ing the lamp receptacle against rotation.

Flgure 11 is a horizontal section on the line 1111 of Figure 10.

Figure 12 is a fragmentary side view of a ceiling fixture showing a modified formation of the opening thru the ceiling canopy as when a pull chain type of lamp receptacle is used. 7 69 Figure 13 is a sectional view through a large type of canopy showing the receptacle securing means entirely concealed within the canopy. t

Figure 1 f is a section on line 1 l1 l of Figure 13.

Figure 15 is a fragmentary side view of the canopy shown in Figure 13.

Referring to the drawings in detail, and wherein similar reference characters designate corresponding parts thruout the several views, the preferred form of invention is shown in Figures 1 and 2.

Referring particularly to Figures 1 and 2, the electric light ceiling fixture comprises a canopy A of conventional construction adapted to receive and conceal the usual porcelain ring receptacle B.

The canopy A is of metal construction and includes the uppershell'portion 5 and the lower shell portion 6 which is connected at its upper end to the lower end of the shell portionl'iby the usual locking flange connection providing an internal annular seat flange 7 providing a support for the receptacle B. The canopy A is supported by means of attaching screws or bolts 8 and these attaching elements 8 also serve to prevent rotation of the canopy.

The porcelain ring receptacle B is of ordinary construction and embodies a socket or main body portion 10 adapted to rest upon the upper side of the seat flange 7 within the The receptacle body portion 10 is provided with the usual metallic threaded socket portion shown in dotted lines in Figure as at 11 which extends downwardly within, the

seat flange 7. Threaded'upon the metallic lamp receiving socketportion 11 is the por celain clamping ring 12 for drawing the upper or main body portion 10 into seating engagement upon the internal flange 7.

VJith the conventional type of ceiling fixture described, the porcelain ring receptacle B is held against rotation by pressing a. rug upwardly in the internal flange 7 for engaging in a recess as at 13 provided in the under side of the socket portion 10. Threading of the clamping ring 12 upon the metallic socket portion 11 draws the body portion 10 into engagement with the flange 7 so that the lug on the flange engages in the recess 13 in a manner to prevent rotation of the receptacle B. The engagement of this flange lug as shown at 14C, in the recess '13 does not provide sufficient locking action between the receptacle and flange 7 to prevent rotation of the receptacle owing to the shallow depth of the recess 13 and beveled ends of the locking lug 14:. When an electric light bulb is threaded into the ring receptacle, the receptacle is rotated causing the lead wires 15 to become twisted and in some instances broken. In the case of the pull chain ring receptacle, this rotation of the receptacle also disaligns the chain guide bell of the receptacle with the usual opening thru the canopy and results in breaking of the chain. With the curing means forming the subject matter of this invention, the porcelain ring receptacle will be effectively held against possible rotation within the canopy.

The receptacle securing means C shown in Figures 1 and 2 comprises a clamping band 16 adapted to encircle the receptacle socket portion 10 inwardly of the lower portion of the top canopy section 5 immediately above the internal flange 7. Projecting radially "from the ends of the annular body portion of the clamping band are apertured extensions 17 which project thru an opening 18 provided in the upper canopy section 5.

clamping screw 19 is rotatably extended thru one of the extensions 17 and has its shank portion threaded into the companion extension whereby the clamping band may be contracted about the receptacle portion 10 from a position eXteriorly of the canopy. The annular body portion of the clamping band 16 is secured as by welding, soldering or the like as at 20 to the canopy section 5. It will be noted that the clamping band is secured to the canopy section 5 at a point diametrically opposite to the open end of the band and allows for equal lengths of the band at opposite sides of the connection20 to be drawn into clamping engagement with the socket portion 10. Thus it will be seen the connection 20 prevents relative rotation of the clamping band and canopy section 5 and also serves to prevent displacement of the clamping band prior to positioning of the 1 ring receptacle in the canopy. When the clamping band 16 is contracted about the receptacle portion 10, to which the lamp receiving socket portion 11 is secured, the ring receptacle will be held against possible rotation during placingor removal of the electric light.

In providing the conventional type of canopy A with the receptacle securing means C, it will be seen that it is merely necessary to provide the opening 18 in the upper canopy section 5 and secure the clamping band 16 as at 20 so that the conventional type of porcelain ring receptacle may be placed in the canopy and positively held against rotation by the securing means C. As in Figure 1, it will be seen that when a pull chain type of porcelain ring receptacle is used, the securing means will serve to align the chain guide bell. of the receptacle with a pull chain opening usually provided in the upper section of the canopy.

In the form of securing means D shown in Figure 3, the clamping band is formed with a complementary pair of semi-circular shaped sections 22 adapted to encircle the receptacle socket portion 10 immediately k above the rest flange 7 of the canopy. Provided at each end of the arcuate shaped clamping band sections 22 is a radial extension 23 and these extensions are extended thru openings 24 provided in diametric relation in the lower portion of the upper canopy section 5. The extensions 23 are provided with aligning apertures, one of which is screw threaded for receiving the shanks of clamping screws 25. I shaped clamping band sections 22 are secured midway their ends as by soldering, welding or the like as at 26 to the canopy section 5 for preventing rotation of the clamping band sections. Tightening of the clamping screws will therefore contract the clamping band sections 22 about the receptacle.

In the form of receptacle securing means E shown in Figure 4, the ring-like body portion of the clamping band 28 is formed with three outwardly pressed ears 30 forming stop projections adapted to project out-ward ly thru openings 31 provided in the upper canopy section 5. The ends of the clamping band are formed into radial extensions 32 1 which project thru an opening 33 in the canopy section 5 and are connected by a clamping screw 34 serving to contract the band about the receptacle portion 10. As will be observed, the openings 31 and 33 are spaced equi-distant apart so that one of the cars 30 is in alignment diametrically of the clamping band with the extensions 32. With the arrangement shown in Figure 4;, the clampin g band is not fixedly secured to the canopy but is held against rotation thru snug engagement of the ears 30 in the openings 31.

In the form of receptacle securing means F shown in Figure 5, the annular clamping .band 35 is provided midway between its open The semi-circular iii iing band areformed with outwardly projecting extensions 38 which project thru an opening 39 provided in the canopy section in diametric alignment with the opening 37. The extensions 39 are providedwith aligning openings for receiving a clamping screw 40 serving to contract the band35 about the receptaclesection 10.

Thus it will be seen in each form of receptacle securing means C, D, E and F that the clamping band encircles the upper portion of the ring receptacle and is so connected to the canopy as to be held against rotation within the canopy. It will also be noted that the clamping bands are contracted about the ring receptacle bymeans of clamping screws arranged exteriorly of the canopy; with the clamping screw extensions aiding in retaining the clamping bands against displacement.

In the form ofreceptacle securing means shown in Figures 6 and 7, bendablefingers 42 are secured as by soldering, welding or the like to the inner surface of the upper canopy section 5 for fitting into suitable recesses 43 provided in the upper side of the porcelain ring receptacle B. With this form of securing means employing the spaced apart bendable fingers 42, no alteration to the canopy is required altho an especially constructed ring receptacle is required having the recesses 6 .3 for receiving the fingers.

In the form of receptacle securing means shown inFigures 8 and 9, three or more set screws as at 44 are threaded thru suitable bushings in the upper canopy section 5 into engagement with the circumferential face of the receptacle socket portion 10.

Referring now to the form of receptacle securing means H shown in Figures 10 and 11, a strap 45 is secured across the'inner side of the upper canopy section 5 above the ring receptacle D preferably by welding or soldering the ends of the strap to the :canopy section. Threaded thru the central portion of the strap 45 is a clamping screw 46 which may be provided at its lower. end with a suitable shoe 47 for engagement with the upper sur-,

face of the receptacle socket portion 10 for forcing the socketportion against the ring flange 7 As will be observed i1rFigrire.1.1,

the strap 45 is not extended diametrically of the canopy and this is to permit passageof the receptacle portion 10 past the strap in assembling the porcelain ring receptacle in the canopy. T With the strap 45ottset in a direction toward the lug 14 asshown in Figure ll, tightening oi the clamping screw 46 prevents possible raising of the receptacle portion IOand retainsthe locking lug in the recess 13 so that the receptacle is held against possible rotation.

In Figure 12, the canopy A has its upper 52 and the extensionarms 53 ofa clamping band 54' which may be of a type such as shown in Figures 1 and 2. When the clamping band is contracted about the receptacle 52, the guide bell 55 of the receptacle isheld in proper alignment with the canopy opening 50 and also allows the clamping screw 56 to act as a guide for the pull chain 51.

In the large form of canopy L shown in Figures 13 to 15, the annular seat flange 60 connecting the upper shell portion 61 to the lower shell portion 62 is considerably wider than in the type of canopy shown in Figure 1 and provides suflicient space between the receptacle B and upper shell portion as to permit mounting of the securlng means M entn'ecealed within the upper shell portion of the canopy L. The clamping band 63 is preferably held against displacement by striking up lugs'66 from the flange 60 and securing the lugs as by welding or the like tothe outer sur face of the hand. These lugs may be arranged at apart with one of the lugs secured to the band in diametric alignment with the clamping extensions 64. An opening 68 is provided in the upper canopy section 61 to permit insertion of a screw driver for rotatingthe clamping screw 65.

From the foregoing it willbe apparent that an improved construction for ceiling light flxtureshas been disclosed whereby the lamp receptacle will be eitectively held against possible rotation. It will further be apparent that a novel arrangement has been disclosed whereby the conventional type of'ceiling canopies and porcelain ring receptacles therefore may be cfiectively held against relative movement by means of an improved securing means adapted to be secured to the canopy and have a clamping action upon the the flange and having clamping engagement with the upper receptacle section to prevent rotation of the receptacle in the casing.

2. In an electriclight fixture, a casing having an internal annular rest flange, atwo piece ring receptacle supported by and having clamping engagement with the upper and lower sides of the flange, and securing means carried by the casing and releasably engageable with the portion of the receptacle above the flange for preventing rotation of the receptacle in the casing.

3. In an electric light fixture including a casing having an internal rest flange, and a porcelain ring receptacle mounted upon the flange; securing means carried by the casing above the rest flange and having clamping engagement with the receptacle above the flange for preventing rotation thereof in the casing.

4. In an electric light fixture including a casing having an internal annular rest flange, and a two piece ring receptacle mounted upon the flange; a. clamping band mounted against rotation in the casing and encircling the receptacle above said rest flange, and means for contracting the band about the receptacle.

5. In a light fixture including a casing having an internal rest flange, and a ring receptacle mounted in the casing on said flange; a clamping band encircling the receptacle above the flange, interlocking retaining means between the band and casing for preventing rotation of the clamping band in the casing, and means for contracting the clamping band about the receptacle.

6. In combination with a light fixture including a casing having an internal annular rest flange, and a receptacle mounted in the casing on said flange; a clamping band encircling the receptacle above the flange, means for securing the clamping hand against rotation in the casing, and means exteriorly of the casing for contracting the clamping band about the receptacle.

7. In combination with a light fixture ineluding a casing having an internal annular rest flange, and a ring receptacle mounted in the casing upon said. flange; a clamping band encircling the receptacle above the rest flange and having extensions projecting outwardly thru the casing, means securing the clamping hand against rotation in the casing, and means acting upon said extensions for contracting the clamping band about the receptacle.

8. The combination with alight fixture including a casing having an internal annular rest flange and an opening above the flange, and a ring receptacle mounted in the casing on said flange, of securing means for the receptacle comprising a clamping band encircling the receptacle above said flange and having extensions projecting outwardly thru the opening in the casing, means securing the clamping band to the casing at a point diametrically aligning with the casing opening,

and means associated with said extensions for clamping the band about the receptacle.

9. In alight fixture the combination with a casing having an internal annular rest flange and a ring receptacle mounted in the casing on said flange, said casing having spaced openings thereabout directly above said flange, of securing means for the receptacle comprising a clamping band including a body portion encircling the receptacle having extensions at its ends projecting outwardly'thru one of the casing openings and ears formed thereon fitting in the other of said casing openings, and a clamping screw connecting the extensions exteriorly of the casing. for contracting the band body por tion about the receptacle.

10. In a light fixture the combination with a casing having an internal annular rest flange, and a ring receptacle mounted in the casing on said flange, said casing having evenly spaced apart openings therein directly above the rest flange, of securing means for the receptacle comprising a splitclamping band including a body portion encircling the receptacle and having outwardly pressed ears to project outwardly thru certain of the casing openings and. clamping extensions proj ecting outwardly thru one of the casing openings, and a clamping screw connecting the extensions for contracting the band body portion about the receptacle.

11. In a light fixture the combination with a casing having an internal annular rest flange and a lamp receptacle mounting in the casing on said flange, said casing having diametrically aligned openings immediately above the rest flange, of securing means for the receptacle comprising a clamping band encircling the receptacle having extensions projecting thru one of the casing openings and an ear pressed outwardly for extending thru the companion casing opening, and a clamping screw connecting said extensions for contracting the band about the receptacle.

12. In a light fixture the combination with a casing having an internal annular rest flange and a ring receptacle mounted in the casing on said flange, of securing means for the receptacle comprising a strap mounted in the easingto extend across and above the receptacle, and a clamping screw threaded through the strap into engagement with the receptacle for clamping the receptacle upon said flange.

13. In an electric light fixture, a casing having an internal annular rest flange, a ring receptacle mounted upon the flange and including upper and lower sections, said upper section having recesses provided in its upper side, and bendable fingers secured to the inner side of the casing and adapted to be bent into the recesses of the upper receptacle portion for preventing rotation thereof within the casing.

HARRY L. BERMAN.

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