Jam. 7', 1947'. 2,413,953 J. A. coMsTocK CASING- FOR ELECTRICAL DEVICES Filed Feb. -2l,_ 1945‘ I 2 Sheets-Sheet >l_ - - r BY V ' ‘ mmvroa Jam 7; 1947. J.‘ ,A. coMsTocK‘ ' 2,413,953 CASING FOR ELECTRICAL DEVICES Filed Feb. 21‘, 1945 2 Sheets-Sheet 2 EVIAI‘YENTOR‘. Patented Jan. 7, 1947 2,413,953 ‘UNITED STATES‘ PATENT OFFICE 2,413,953 CASIIN G FOR ELECTRICAL DEVICES .ia-rnes A. Cornstock, Clyde, N. Y., assignor, by mesne assignments to Acme Electric Corpora tion, a corporation of New York Application February 21, 1945, Serial No. 579,129 5 Claims. 1 (Cl. 174—52) 2 My invention relates to a case for electrical devices general, more particularly to a case ior an electrical device having lead wires case with the enclosure plate broken away at one end. There are two standard methods of mounting extending therefrom such, for example as trans ?uorescent lighting ballast cases or boxes. One formers, reactors and ballast. In this applica method is to enclose the ballast case Within a tion, the inve ion will described in conjunc top housing on the re?ector. In this type of tion with ballast thus the term “ballast” mounting, the lead wires are normally extended hei'eidaitv used all interpreted as includ through the ballast case at the end of the case. ing the tr nsformer and a reactor or other de second method of mounting is called “ex vices. 10 posed mounting” and employs a ballast case from An object my invention is to provide a case which the lead lines are extended through the for an electrical circuit ballast which is adapt botton. The ballast case is mounted on top able to allow the wires of he ballast to extend of the top housing in an exposed position to allow from case in either 01 two dire tions and a greater dissipation of heat. The lead wires to permit wires to be moved from one posi 15 extend irom the bottom of the ballast case and tion to the other. into the top housing of the ?xture which en Another object of my invention is to provide a closes the distributing wires to the ends of the case for an electrical circuit ballast which is ?uorescent tube. adaptable to allow the wires of the ballast to extend from the case in either it is practice to provide two types outwardly or 20 of ballast cases for these two needs. downwardly direction and to permit the wires to be moved from one position to the other. Another object of my invention is to provide a case for an electrical circuit ballast having lead wires, the case having a continuous opening ex 25 te ding around a corner ti erect to permit a selec tic-n of positions for the wires to extend erefrom whereby the ballast may be used in either enclosed conduits. or positioned on top or on the outside of a no’ duit. If an en closed mounting is desired, a “standard” ballast case is furn' ed in which the leads extend from the end of the If the ballast case is to be mounted Y the exposed mounting position, the “bottom” lead. type case is furnished. It will readily be seen that a double supply of ballast cases must be kept on hand at all times with this type of practice order to meet the needs. My improved ballast c30 provides on the other hand, continuous slot extending along two Another object of ___y ll‘ ntion is to provide a angularly joined walls of case in order that case for electrical device which is adapted the lead wires be placed in either of the two to be secured to a surface by screws or the like, required positions, and may readily be moved and which ‘is provided with a hook~shaped open one position to the other. Therefore, in ing for the lead '\ “es of the device, whereby 35 stead of double supply of cases, only one supply the wires may moved away from the screw of cases need carried in stock and these may while the screw ' being tightened. Otter obiectu and a fuller understanding of my invention. 2?. y be had. be adapted to the particular needs. Further, the standard practice of securing these referring to the ballast case. to provide a flange at either end following description and claims, taken in con 40 of the case with a slot therein to be engaged by junction with the accompanying drawings, in a screw, or similar fastening device. It has been which: found, that with the ballast cases of the “stand Figure 1 is a broken away View of a ?uorescent ard type” the wires often extend from the case lighting unit employing a top housing channel in a position directly above the described slot, for lead wires and ballast unit mounted on 45 and therefore interfere with the tightening or the top; fastening means. Also, the wires are in a posi Figure is a broke: caway view of a ?uorescent tion whereby they may be damaged when the l’ghtirg unit employing a too housing channel screw is inserted or removed therefore, pr0_ which encloses both the wiring and the ballast duoe a ?re hazard. My invention also provides 50 for oositioning the lead wires a lateral distance unit; Figure 3 is a side view of a ballast case em— away from the securing means. and therefore, bodying the features of my invention and illus they do not interfere with the tightening of the hating the ballast lead wires extending from the screw. or become damaged during the tightening operation. ends of the case as toositioned when the core is enclosed. and in phantom the lead wires are 55 With reference to the Figure 1, I illustrate a illustrated in the position assumed when the case broken away section of a standard overhead i-u~ is mounted on too of the housing conduit; crescent illuminating unit in which the reference Figure 4: is an view of Figure 3; character iii indicates the reflector that shields Figure 5 is a bottom view of Figure 3; and a suitable number of ?uorescent tubes H. Figure 6 is a perspective view of my improved. Mounted on top of the re?ector H), is a top 2,413,953 4 3 housing i2 which is employed to serve as a con dam I1 and therefore, a space 33 is provided. Lead wires l3 extend through an opening 32 into the space 33 provided by the dam I? and there after pass out through the continuous slot 24, The space 33 provided by the dam l1, therefore permits the lead wires 13 enough freedom of duit for the lead wires it. These lead wires I?» extend to the end of the re?ector unit (not shown) and to other auxiliary equipment em ployed with the unit. In the Figure l, I illustrate my improved ballast case M as being mounted in the exposed mounting position, therefore the movement within the case so that they may be wires from the case it extend from the bottom moved from one end of the continuous slot 24 of the case and are not illustrated. The case M to the other. is secured to the top housing l 2 by means of suit 10 In operation, the case may be removed from stock with the wires l3 extending from any por tion of the continuous slot 24, and the wires may be moved to the plane desired dependent upon method, in which the ballast case I 4 is secured directly to the top of the re?ector H! by means the need. In the event that the wires l3 are to of Screws 22, and is enclosed by the top housing 15 extend in the “standard” direction, that is, from able screws 22. V The Figure 2 illustrates the enclosed mounting ' the end walls I5 of the case, the wires are posi tioned as described, near the terminus 28 of the hook slot 25. The wires l3 will stay in place near mounting illustrated in the Figure 2, the wires the terminus 28, because the tab 29 opposes lateral extend through a continuous slot 24, of which 20 movement thereof. The screw 22 may then be turned Without damage to the Wires l3. On the only a hook portion 25 is illustrated, but which extends around the end E5 of the case. It will other hand, if the Wires I3 are to extend from the be noted with reference to the Figure 2, that the 7 bottom of the case, as in the “exposed mounting,” lead wires 5 3 are positioned at the terminus 28 the wires [3 are moved into the slot 26, and of the hook portion 25, and are held against lat 725 thereafter will not be in position to interfere with eral movement toward the screw 22 by means of the operator of the screws 22. Although I have described my invention with a tab 29. Referring to the Figures 3 to 6, I illustrate the a certain degree of particularity, it is understood speci?c details of one embodiment of my inven ' that the present disclosure has been made only tion. This embodiment comprises generally 30 by way of example and that numerous changes ’ three longitudinal walls 30, two end walls 15, in the details of construction and the combina and a closure plate It. Securing ?anges 2| ex tion and arrangement of parts may be resorted ' tend substantially perpendicularly from the end to without departing from the spirit and the walls l5 and serve to hold the closure plate It scope of the invention as hereinafter claimed. and also serve as securing ?anges to be contacted I claim as my invention: by screws 22. The ?anges 2| are perforated by 1. A case for an electrical device having at openings or holes l9, and the closure plate I6 is least a lead wire disposed to extend from the provided with projecting surfaces l8 which ex said electrical device to the exterior of said case, tend into and through the holes i9 and interlock said case comprising at least a ?rst and a second therewith. 40 angularly disposed wall meeting at a corner, a Slots 26 are provided in the closure plate l6 first slot portion in said ?rst wall extending to substantially along the center line thereof, and the said corner and a second slot portion in said slots Z'l are provided in the ?anges 2!. The slots second wall extending to the said corner, said 27 divide the ?anges 2| intermediate their ends. slot portions joining at said corner to form a In fact, each of the ?anges 2| may be considered 45 continuous slot through which the said lead wire as two separate ?anges separated by a space ‘may extend, said lead Wire being extendable in therebetween which constitutes the slot 21'. The one direction from the case through one of the hook-shaped slots 25 in the end Walls iii are said slot portions and being extendable in a sec» disposed to join or register with the slots 26 and ond direction from the case through the other of the slots 2'! at corners 3!. It will be seen there 50 said slot portions, said wire being movable in fore, that for each end of the case, the joined said slot from one position to the other to change slots in the angularly disposed walls which may the direction in which it extends from the case, be referred to as slot portions, provide a contin at least one of said slot portions being hock uous slot, port or opening extending around the, shaped and having a terminus disposed in a lat corner through which the ballast lead wires i3 5 eral direction from the place where the slot por may extend. In these illustrations, the lead tions join, a portion of the case Wall on one side wires [3 are shown in full lines extending of the said hook-shaped slot portion forming a through the hook-shaped slots 25, and are illus tab between the said terminus and the place trated in dot dash lines extending through the ' where the slot portions join, whereby the tab op closure plate slots 26. These two positions are 60 poses the lateral movement of the lead wire to the far extreme through which the lead wires ward the place where the slot portions join when 83 may be moved, and are the two normal work the lead wire is placed in the hook-shaped por ing positions which the Wires may assume, tion near the terminus thereof. With reference now to the Figure 6, the broken 2. A case for an electrical device having at least away portion of the closure plate 16 reveals the 65 a lead wire disposed to extend from the said interior of the ballast box at one end thereof. electrical device to the exterior of said case, said When the electrical apparatus is inserted Within case comprising at least a ?rst and a second angularly disposed wall meeting at a corner, a the metal box during manufacture, a small dam H is placed to slope from a pointbeyond the vsecuring ?ange extending from said corner dis apex of the hook-shaped slot substantially as 70 posed perpendicular to said first wall and sub stantially in the plane of the second wall, a ?rst illustrated. A plastic material 2i], such as a suit able insulating compound; is poured into the case slot portion in said ?rst wall extending to the said corner and a second slot portion in said and ?lls and surrounds the electrical equipment. second wall extending to the said corner, said slot However, this material 23 is held away from the region adjacent the corner 3| by means of the 75 portions joining at said corner to form a continu I 2. The lead wires l3, in this case, are illustrated extending from the end of the case i it. In either the mounting illustrated in the Figure l or in the 5 2,413,953 6 oils slot through which the said lead wire may ex~ tend, the said securing ?ange being divided and forming a ?ange slot, the said ?ange slot ex tending to said corner and joining the said con tinuous slot, the edge of the said ?ange slot be ing disposed to be engaged by securing means, said lead wire being extendable in 0 -e from the case through one of the said tions and being ext-endable in a second from the case through the other of said direction slot por direction slot poi“ l0 larly disposed wall meeting at a corner, a securing ?ange extending from said corner disposed per pendicularly to said ?rst wall and substantially in the plane of the second wall, a wall slot in said ?rst wall through which the said lead wire may extend, the said securing flange being di vided and forming a ?ange slot, the said ?ange tions, said wire being movable in said continuous slot extending to said corner 'ld joining the wall slot, the edges of said ?ange slot being posed to be engaged by securing means, the wall slot being hook-shaped and having a said dis said ter tion slot to andthe through other tosaid change ?ange theslot direction from one in which n'iinus disposed in a lateral direction from the join, a portion of the said ?rst Wall on one side slot forming a tab between the said terminus and place where the wall slot and the ?ange slot join, it extends from the case, at least the said ?rst wall said lead wire being extendable through the slot portion being hook-shaped and having a 15 said wall slot and being movable in said wall slot terminus disposed in a lateral direction from the irom one position to the other, a portion of the place where the slot portions and the ?ange slot said wall on one side of the said hook-shaped of the said hook-shaped slot portion forming a the place where the wall slot joins the ?ange tab between the said terminus and the place where 20 slot, whereby the tab opposes the lateral move— the slot portions join, whereby the tab opposes ment of the lead wires toward the place where the lateral movement of the lead wire toward the the wall slot joins the ?ange slot when the lead place where the slot portions join when the lead wire is placed in the hook-shaped portion near wire is placed in the hook-shaped portion near the terminus thereof and thereby positions the the terminus thereof and thereby positions the 25 said lead wire away from the said securing means. said lead wire away from the said securing means. 5. A case for an electrical device having lead 3. A case for an electrical device having at wires disposed to extend from the said electri least a lead wire disposed to extend from the said cal device to the exterior of said case, said case electrical device to the exterior of said case, said having two end walls and being closed by a clo case comprising at least a ?rst and a second sure plate, said end walls and closure plate com angularly disposed wall meeting at a corner, a securing ?ange extending from said corner dis~ prising angularly disposed walls meeting at oppo posed perpendicular to said ?rst wall and sul — stantially in the plane of the second wall, a ?rst slot portion in said ?rst wall extending to the said corner and a second slot portion in said second wall extending to the said cor ner, said slot portions joining at said cor ner to form a continuous slot through which site corners, a securing ?ange extending from each of said corners and disposed perpendicular to said end walls at said corners and substan— tially in the plane of the closure plate, end Wall having a first slot portion extending to its respective corner and the closure plate having two separate slots positioned at extremities there- of and extending to the said corners, each said the said lead wire may extend, the said securing 40 end wall slot joining a closure plate slot at the ?ange being divided and forming a ?ange slot, the corners to form continuous slots through which said ?ange slot extending to said corner and join the said lead wires may extend, each said se ing the said continuous slot, the edge of said curing ?ange being divided and forming a ?ange ?ange slot being disposed to be engaged by se slot, each said ?ange slot extending to its re curing means, said electrical device and the in 45 spective corner and joining the said continuous terior of said case de?ning a space therebetween slot, the edges of said ?ange slots being disposed in the region of the said corner, said lead wire to be engaged by securing means, said electrical being extendable in one direction from the case device and the interior of said case de?ning spaces through one of the said slot portions and be therebetween in the region of the corners, said ing extendable in a second direction from the 50 lead wires being extendable in one direction irom case through the other of said slot portions, said the case through the closure plate slots and being wire being movable in said space and said con extendable in a second direction from the case tinuous slot and through said ?ange slot from through the end wall slot portions, said wires be one position to the other to change the direction ing movable in said spaces and said continuous in which it extends from the case, at least the 55 slots and through said ?ange slots from one posi said ?rst wall slot portions being hook-shaped tion to the other to change the direction which and having a terminus disposed in a lateral di they extend from the case, at least the end wall rection from the place where the slot portions and the ?ange slot join, a portion of the said slot portions being hooked~shaped, said hooked shaped portions having a terminus disposed in a ?rst wall on one side of the said hook-shaped lateral direction from the place where the hool-z 60 slot portion forming a tab between the said ter~ shapod slot portion and the ?ange slot join, a minus and the place where the slot portions join, portion of the said end wall on one side of the whereby the tab opposes the lateral movement said hook-shaped slot portion forming a tab be of the lead wire toward the place where the slot tween the said terminus and the place where portions join when the lead wire is placed in the the slot portions join, whereby the tab opposes hook-shaped portion near the terminus thereof 65 the lateral movement or" the lead wires toward and thereby positions the said lead wire away the place where the slot portions join when the from the said securing means. lead wire is placed in the hook-shaped portion 4. A case for an electrical device having at least near the terminus thereof and thereby positions a lead wire disposed to extend from the said the said lead wires away from the said securing electrical device to the exterior of said case, said 70 means. case comprising at least a ?rst and second angu JAMES A. COWSTOCI”.