Патент USA US2137162код для вставки
Nov. 15, 1938. c, .__ HlLE ELECTRIC ‘ CONTACT PLUG . 2,137,162 ' > I Filed June 3, 1957 ' 3mm ‘ ('kdrlasljfzie , Patented Nov. 15, 1938 2,137,162 PP-lUNI'TED STATES PATENT OFFICE ~ 2,127,162 ‘ " ' ELECTRIC CONTACT PLUG Charles L. Hile, ‘Louisville, ‘Ky. Application June 3, 1937, Serial No. 146,280 2 Claims. (01. 173-322) This invention relates to certain new and useful improvements in electric contact plugs. The primary object of the invention is to pro vide an electric contact plug having a device as 5 sociated therewith for relieving pulling strains on p the conductor wires and intended for use in lieu of the usual plug puller. A further object of the invention is to provide. an electric contact plug of the foregoing character 10 wherein a strain reliever for the conductor wires in the form of a barrel or tube extends transverse ly of and is swiveled in the inner end of the con tact plug and through'which barrel or tube, the conductor wires from the terminal within the 15 plug extend in opposite directions for increasing frictional contact between the conductor wires within the barrel or tube for relieving strain on the conductor wires at their points of connection with the terminals within the plug during the 20 pulling of the plug. , With the above and other objects in view that will become apparent as the nature of the in vention is better understood, the same consists in the novel form, combination and arrangement 25 of parts hereinafter more fully described, shown in the accompanying drawing and claimed. In the drawing: Figure 1 is a plan view of the electric contact plug constructed in accordance with the present 30 invention and showing a barrel or tubular mem ber extending transversely of the inner end'of the plug and through which the conductor wires from the plug extend in opposite directions ;' Figure 2 is a side elevational view; 35 Figure 3 is an inside face view of one of the contact plug sections with the barrel or tube guide for the conductor wires shown in section; Figure 4 is an inner end elevational view of the plug; 40 7 ' Figure 5 is a detail sectional view taken on line 5-5 of Figure 1, showing the strap‘ support for the barrel or tube swiveled in the inner end of the contact plug; and Figure 6 is a perspective view of ‘the conductor 45 wire barrel or tubular member with the holder therefor. The electric contact plug is of the usual typev including a pair of mating sections I0 housing the terminals and inner ends of the conductor wires, 50 the inner face of each section III being recessed, notched and grooved for seating the terminals II that have the inner ends of conductor wires I2 and I3 anchored to the terminals II as at I4. The opposed faces of the inner ends of the plug 55 sections III are provided with an annular groove I5 for purposes presently to appear and said plug sections III are maintained in assembled re lation by the spring wire clips I6. In lieu of the usual plug puller comprising the ordinary coiled spring through which the con OI ductor wires extend, there is provided a device for relieving the strain on the conductor wires I 2 and I3 and said strain reliever includes a tubular member II that is carried by a holder in the form of a curved strap I8 that has its free ends directed 10 toward each other and reversely curved to provide I a pair of ribs I9 that are seated in the annular groove I5 in the plug sections II) to swivel there in, the tubular member I‘! extending transversely of the inner end of the contact plug. As shown 16 more clearly in Figures 1 and 3, the conductor wire I2 extending from the contact plug is passed in one direction as shown at 20 through the tubu lar member I'I while the other contact wire I 3 ex tending from the plug is passed in a reverse 20 direction as shown at 2I through the tubular member I1 with the two portions 20 and 2I of the conductor wires I2 and I3 frictionally con?ned within the tubular member. The tubular member I‘I extends transversely of the inner end of the 25 contact plug and if desired may be used as a plug puller, but pulling strain on the inner ends of the conductor wires I2 and I3 at their points of connections I4 with the terminals II is re lieved when the extended ends of the conductor 30 wires I2 and I3 are used as a pulling device in View of the reverse passage of the conductor wires through the tubular member I‘! with the frictional engagement between the portions 20 and 2| of the conductor wires and frictional en gagement between the conductor wires and tubu lar member. From the above detailed description of the in vention, it is believed that the construction and operation thereof will at once be apparent and while there is herein shown and described the preferred embodiment of the present invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as 45 claimed. 1. In an electric contact plug of the character described, a plug body formed of mating sections, each section having a semi-circular groove mat 50 ing with the groove of the other section to form an annular groove when the sections are assem bled, conductor wires extending from the plug body, means for relieving pulling strains on the conductor wires including a tubular member 2 2,137,162 extending transversely of the end of the plug body bled, conductor wires extending from the plug from which the conductor wires extend and ex ternally thereof and a carrier for the tubular body, means for relieving pulling strains on the conductor wires including a tubular member ex member including a strap surrounding the tubu lar member and having its ends directed toward each other and reversely curved to form ribs, tending transversely of the end of the plug body said ribs being located in the annular groove. 2. In an electric contact plug of the character 10 described, a plug body formed of mating sections, each section having a semi-circular groove mat ing with the groove of the other section to form an annular groove when the sections are assem from. which the conductor wires extend and ex 5 ternally thereof and a carrier for the tubular member including a strap surrounding the tubu lar member and having its ends directed toward each other and said ends being located in the an nular groove. 10 CHARLES L. HILE.