Патент USA US2121521код для вставки
June 21, 1938. ‘ _ s._ M. DE'LYCAMP ELECTRICAL CONNECTER PLUG 2,121,521 - Filed April 2, 195,6v lnvenia 7': Gcaipl'ohel‘f?el ca mp. 129% 2,121,521 * ‘ Patented-JuneZi, 1938 v ‘ . UNITED' STATES‘ PATENTiQFFlCE 2.121.521 " EIEOTBICAL CONNECTED PLUG Scipione M. Del Camp, Maywood, 111., assignor Manufacturing garporation, Chicago. toCinch ' 111., a corporation 01 min 7 Application April 2, 1938, SerialNo. 12,826 10mm. (01. 173-361) V j I My invention relates toan improved plug for ‘most clearly shown in Figs. 1 and 2. After the ‘ electrical connections. bead 0 has been formed, the insulating plates 3 - . One of the objects of my invention is to provide and ‘6 are in ?xed assembly one with another an electrical plug which is constructed in a way. between the head 8 and the bead 22. The large plate 6, in my preferred form, is provided with 5 to’ prevent ‘physical contact between the opera tor's ?ngers and the prongs of the plug when the -' a series of apertures In (Fig. 10) which are ‘ plug is inserted into or removed from a cooperat ing electrical socket. ‘The use or such a device is‘ particularly desirable when one or more of the located at predetermined points within the pe riphery of the plate to conform with the positions of the ?nger-shaped elements 4. ‘The purpose‘ of ' the apertures II is to provide a space for re 10 '10 plug prongs carries a relatively high voltage. ceiving the elements 4 when they are bent to Referringto the drawing, in which I have il lustrated a preferred embodiment of my inven— tion:—- . 1 . , Fig. 1 is a plan view of my improved electrical ‘ 15- plug member; Fig. 2 is a section taken on the ling 2-! of Fig. 1; Fig. 3 is a bottom plan view‘ of the plug mem ber shown in Fig. 1; I Fig.‘ 4 is a section taken along the line 4-4 engage the plate 3 so that they will not interfere to preventdisposition of the plate 8 in adjacent v relationship‘to the plate 8. The plate 6 is purposely formed of such dimen 15 sions as to make the prongs 'l inaccessible to the ?ngers oi’ the operator when the container I, or the plate 8 itself, is grasped for engagement with ‘or removal from a socket member, not shown. For this reason it will be noticed that the plate 20 I is of substantially greater diameter than the diameter of the container l adjacent to its open end and forms a peripheral ?ange around the plug member; ‘ V Fig. Bis a bottom plan view of the container " container I at the open end (Figs. 1-3) with the result that the operator's ?ngers, when in con shown in Fig. 5; and Fig. 'l is a sectional view of the container shown ‘ tact with the container l, are prevented from of Fig. 2; _ ' . _ 1 1 - g . Fig. 5 is a plan view of the container part of my in Fig. 5. _ _ 1 Referring now in detail to the drawing, I have shown in Figs. 1-3 an electrical plug mem ber having a housing part in the form of a sheet 30 metal container I which may be of a tubular slipping over the edge and touching any one of the prongs 1. Thus it will be seen that as a re sult of my invention 1 have provided a simple and inexpensive means for carrying out the purpose in mind. ' . 30 Although. Iv have illustrated and described a provided. in my preferred ‘form, with a peripheral preferred embodiment of my inventionJ do not ?ange 2 formed from the material or the con- ' wish to be ?niited thereby because the scope of tainer adjacent to an open end (Figs. 5 and '1). my invention is best de?ned in the following 35 35 Aninsulating platelisdisposed within the?ange ' or any other suitable..shape. The container I is claim. ‘ » ' ' I claim: ‘ ' 2 and is held in ?xed assembly therewith by“ A plug for electrical connections including a means of a plurality of ?nger-shaped elements 4 integral with the material of the container at tubular sheetmetal container having an ‘open the open end and bent over, as shown in Figs. 2 end. a‘plurality of ?ngers integral. with one of 4° and 4, to engage one face of the insulating-plate . said open ends, an insulating plate of small di 3. An opening 5 is extruded on the side or end ameter and an insulating plate of large diameter a of the container l directly opposite to the end in ?xed assembly with said container at said carrying the plate 3 to allow the entrance of a open‘ end, said large plate having a number of Y apertures locatedat predetermined points with ‘wire or group of wires into the container. ' 45 1 The main feature of my invention is the rela tively large insulating plate 6 which is ?xed at the open end of the container l in substan tially adjacent relation to the plate]. A plu rality‘of contact prongs ‘l is carried by the plates 5° s and s and adapted for contact with cooperat in contact of a socket member (not shown). Each of the contact prongs ‘l is turned over at one of its free ends so as to provide a in the periphery thereof vand equal in number to the number of said ?ngers, said fingers disposed within the apertures of said large plate and in clamping engagement with said small plate whereby said small plate is secured firmly to said container within said open end, and a plurality 50 of contact prongs carried by said plates, said prongs having integralmeans said '1 plates between them whereby‘ said plates are head portion I engaging one surface of the plate held in assembled relation. said large plate hav formaperlpheralbeadlata container adjacent said open end. 55:. Theshankofeachprong‘liscollapsedto " M. tion on its lengthso that the bead willlie adia c‘cnt-to the outside‘surface of the plate 6.1a. ing a diameter substantially larger than said sermons n. on. can’.