Патент USA US2106324код для вставки
Jan. 25, 1938. R. R, KEESEE �6,324 ` WIRING DEVICE Filed DeC. 25, 1955 2 Sheets-Sheet 1 Fay. 4 � 73 ATTORNEY Jan. 25, 193s. R. R. KEESEE A f 2,106,324 WIRING DEVICE Filed Deo. 25, 1935 F27. 6 2 sheets-sheet 2 ? v' /f/ i ? y , 22 24/f/y �/� f y 22 _ 37 I / Z! � //// 祜 2 i. una@ | E :_ , 22 :s45 Nily � i .3_7 s � � � l ` i 22 4625 , i 52.45 iill? - ATTORNEY ` Patented `ian. 25, i938 2,106,324 errno stars rATsNr oFFIcE 2,106,324 " , v l WIRING DEVICE l nonna R. Keesee, Prattsviue, Ark.? l Application December 23, 1935, Serial No. 55,8123 ? 1 claim.' (o1. .17e-329) } ` T_?is invention relates generally to devices em 25 is arranged to be drawn theretoward by means ployed in house wiring, and particularly to a new `of the clamping screw 26, and similarly, the type of wiring device for replacing the common clamping member i9 is arranged to be drawn to� ly used ceiling rosette. The principal object of the invention is the pro~ ?vvard the third terminal lmember i8 by means of vision of a device for facilitating the wiring of the clamping screw 20. For reasons. shortly to `5 appear, no clamping member is usually required -bruidings for electric service with multi-con ductor cables, through the use of which splicing and tapping of the cable in attics and roof spaces l@ may ?ee avoided, such connections as are neces sary being made within the wiring device. Another object is the provision in a ceiling rosette of insulating means for the conductors passing through the ceiling, so that it may be 锘 used on ceilings oi conducting material; rosettes heretofore used lacking this advantage and being unsuitable for such application. With these and such other objects in view as may appear from the description, my invention resides in the particular iorm of construction, and combination of the component parts of the device. in the drawings: ' � Fig. l is a plan View of the device, as seen from z the lower, 2 is aorplan flanged view of the removable cover for the device, as seen from above. > Fig. 3 is a section of the device, taken along the line lll-_III of Fig. l. I 4 is a section of the device, taken along Fig. 5 illustrates the device in the service posi tion. Fig. 6 is an isometric view of a building in the Wiring of which the device has been employed. ' ?P ierring nrst particularly to Figs. l and 3, the hollow tube l�), of some suitable insulating rrete al, as porcelain, is provided adjacent its- end with the integral concentric outwardly extending and downwardly depending recessed -飂l flange Within the recess of the latter, and laterally spaced from the opening through the tube iQ, are mounted a plurality of conductor terminals. In the embodiment illustrated, three such terminals shown, which include the first 'j terminal member ld, the second terminal member S5, and the third terminal member I8, these mem bers being rigidly secured within the recess by means of the mounting screws ll, l5, and 20, re~ spe-:tively 50 To provide ample leakage distance in a small diameter recess, the integral barrier 2l is intel"v posed between the second terminal member i5 and the third terminal member i8. For clamping a plurality of conductors to the 55 駌st terminal member I4, the clamping member for cooperating with the second terminal mem ber i5, the terminal screw 2l amply serving this purpose. ' . In Fig. 1> the device is shown with one con- l0 ductor of each of the two-conductor supply cables Z2 connected through the first terminal member ifi, and the other conductor of each of these cables connected through the third terminal members I8 and I9. One conductor of the two- 15 conductor switch cable 24 is connected to the third terminal members i8 and I9, and the other to the? second terminal member l5. It will be obvious that the 駌st and second terminal mem bers will be energized at the supply voltage when the conductors of the switch cable 24 are elec-1 " trically connected, as through a switch. Figs. 2 and 3 illustrate a closure for the hol low, or recess, containing the conductor terminals, this closure consisting of a disk 2g, of some suit- 2- ` able insulating material, as porcelain. The di ameter of the disk 29 is preferably substantially the same as that of the flanged portion Il. A concentrically positioned recess is provided at the upper side of the disk 29, in which are secured the diametrically spaced U-shaped load contacts 3@ and 3l, by means of the respective load con tact mounting screws 36 and 35 (Fig. 4). Each of these contacts is provided with a laterally eX tending base portion, to which are electrically connected the load conductors 32 and 33, by> means of the load terminal screws 42 and 43 re spectively. A centrally positioned opening Il@ provides an exit from the recess for the load con ductors 32 and 33. The closure, or cover, just described is sub stant'ially the same as a well known rosette cover, and does not, in itself, constitute the present in vention. For retaining the cover in position, the diam etrically spaced resilient load contact clips i3 gs 5 and 28 are secured between a Wall of the recess of the flanged portion Il and the 駌st and sec� ond terminal members I4 and l5 respectively, the arrangement being such that the load com 50 tacts 3B and 3l engage the upper surface of the load contact clips I3 and 28 in response to a rotary movement of the cover 29. The position of the elements under the conditions just de scribed is illustrated in Fig. 4. 2,106,324 The device, designated in its entirety by the numeral 31, is shown secured to an electrically conducting ceiling 4l of a building in Fig. 5. 'I?he bolts 40, which extend upwardly through the openings l2 (Fig. l), rigidly secure the device to the ceiling; the load cable 38, which includes the load conductors 32 and 33, extends downwardly to the lamp socket 39. In this illustration, the cables 22 may be either ingoing or outgoing sup 10 ply cables, and the cable 24 the switch cable for controlling the supplyV of energy to the lamp socket 39. , ` It may be noted that all of the conductors enter the recess of the 馻nged end ll through ~the tubular upper portion I0, the latter extending above the upper surface of the ceiling 4|, so, that a wall of insulating material is Jinterposed be tween both the conductors and the conducting terminals, and the conducting ceiling. 20 The manner in which a building may be wired without the necessity of splicing or tapping the cabled conductors at any point above the ceiling, all oi the necessary. connectionsbeing made with in the wiring devices 3.1, is illustrated by Fig. 6. 25 The two-conductor. cables 22 are normally ener gized,~ at the supply potential, while the two-con ductor?control, cables 24 connect the switches 45 to the load circuit of the device 3.1. A con venience outlet or wall receptacle is designated 30 by the numeral 46. The labor saving through the avoidance of splicing and tapping of the con ductors in roof spaces or att頲s will be apparent from this illustration. While I have here illustrated and described one embodiment of my invention, other embodi mentswill appear from the one disclosed herein, and it is to be understood that my invention is to be limited only by the appended claim and the prior art. What I claim is new, and desire to secure by 10 Letters Patent, is: The combination with a ceiling rosette of an integral upstanding tubular portion having a rel atively large bore for the accommodation of a plurality of two conductor cables, said rosette containing a pair of insulated load terminals and an additional terminal insulated from said load terminals, said terminals including means for connecting one conductor of a two conductor supply- cable to one load terminal and the other conductor to the additional terminal, means for 20 connecting one conductor of a second two con ductor supply cable to said one load terminal and the other conductor to the additional ter minal, means for connecting one conductor of a two conductor load control cable to the other oi said load terminals and the other conductor of said control cable to said additional terminal, and detachable means for connecting a load circuit to said pair of load terminals, said detachable means providing a closure for said rosette. ROLAND R. KEESEE.