Nova Patents
US2115642A

Electrical conductor terminal cap

Abstract

This record has no abstract on file.

US2115642A, drawing sheet 1
Sheet 1 of 6

Term

Term ended

Expired 26 April 1955, 71.4 years ago.

  1. Priority and filed
  2. Granted
  3. Expired
  4. Today

13 claims: 13 independent, 0 dependent

  1. 1
    I claim:. 1. In a device of the character described having a one-piece cap body and blades, said body having an opening therethrough, insulated con- 50 ductors therein with the ends thereof bent apart at one end of said opening and bared of insulation, spaced cavities in said body near said end within which cavities said blades are driven, said bared ends being electrically connected to said 55 13 Claims. This invention relates to electric conductor terminal caps, particularly of the type used in making connections for electric utility devices such as floor lamps, wash machines, toasters and g other portable devices. One of the objects of the invention is to produce a terminal cap consisting of few parts. Another object of the invention is to produce a terminal cap of simple design. 10 Another object of the invention is to produce a terminal cap of sturdy construction. Another object of the invention is to produce a terminal cap that permits of the wire ends being connected thereto in a secure and reliable 15 manner. Another object of the invention is to provide a terminal cap of the character described, that permits of the wire ends, being secured in good electrical contact with the blades, without the _ use of solder or auxiliary'mechanical devices. 20 Another object of the invention is to provide a terminal cap for conductors, having blades projecting therefrom and cooperating therewith to provide a substantial and reliable connection • of said blades to the cap members and to the 5 conductors. Another object of the invention is to attain those ends and other-objects which will be pointed out in the claims. In the drawing, in which a commercial em0 bodiment of the invention is shown:— Fig. 1 is a side elevation of the device. Fig. 2 is an end view thereof. Fig. 3 is an axial section taken as indicated at ok the line 3—3 of Fig. 2. Fig. 4 is an end view of the cap alone, with the blades and wires omitted. Fig. 5 is a perspective view of one of the blades. Fig. 6 is a view showing how the wire is formed 40 when assembled in position. In Fig. 1 the cap 2 is shown as attached to a cooperating plug B which has screw- thread connections with a socket or outlet C;which may be understood as indicating a source of electric cur45 rent to be conducted by the cable D. The cable D is inserted in the bore 3 of the cap member 2, and the wires I—i of the cable are separated and spread in opposite directions, and made to contact with blades 4—4. 50 In assembling the blades 4—4 and the cap 2, it will be understood that suitable tools or devices are employed for holding the blades in proper position while driving the ends 4a—4a thereof into the cavities 2s—2a of the member 2. 55 Having spread the wires I—I in readiness to
  2. 2
    2,115,642 blades, and means formed integral with the blades and located within said cavities to grip the walls thereof and secure said blades against withdrawal. S 2. In a device of the character described including contact blades and a body member for mounting the same, said body member composed of resilient material and having cavities therein into which said blades are driven to assemble the 10 same, said cavities constituting means for mounting the said blades in the said body member, the portion of the blades occupying the cavities having barbs formed thereon to secure same in position and prevent withdrawal thereof. IS
  3. 3
    In a device of the character described including contact blades and a body member for mounting the same, said body member composed of resilient material and having cavities therein Into which said blades are driven to assemble the 20 same, said cavities constituting means for mounting the said blades In the said body member, the portion of the blades occupying the cavities having barbs so formed thereon that the blades may be more readily entered than withdrawn, but se25 curely held against accidental withdrawal.
  4. 4
    4· An electrical fitting comprising a body of non-frangible insulating material having parallel prong receiving openings and sheet metal members having barbed prongs of a thickness equal to SO the thickness of the sheet and of a width slightly greater than the diameter of the holes, the prongs being incapable of easy insertion into the openings but capable of being forced into the same, the barbed prongs being effective to resist re35 moval.
  5. 5
    An electrical fitting comprising a body of non-frangible Insulating material having a face and two spaced holes extending inwardly from the face, and metallic members having prongs forced into the holes, the sides of the prongs having laterally extending projections which engage the walls of the holes and resist removal.
  6. 6
    In a device of the character described including contact blades and a body member for mounting the same, said body member being composed of insulating material and having cavities Whlch sald blades are forced to asSald cavl41es constituting means ^mounting the said blades in the slid body each blade which occupies hayJ?g a barb formed thereon to secure same In Position and prevent withdrawal thereof. ^114 plug cap comprising contact Z 77 preformed supporting base therefor having a passage-way therethrough into which 6onductors may be led in one direction for con
  7. 7
    7^7, J?,saId contact prongs, a pair of prongreceiving holes arranged on each side of said pas>Lay 7-d extendlng inwardly but not through “4d 4he side opposite that through Sald conductors enter, each of said prongs aring a portion too large for ready insertion in the corresponding hole but forced into said hole to secure the prong In position and prevent 65 withdrawal, the outer portions of said prongs extending in the direction first mentioned and the .ends of said conductors being secured in good electrical contact with said prongs.
  8. 8
    An attachment plug cap comprising contact 7° Prongs and a preformed supporting base therefor having a passage-way therethrough into which conductors may be led in one direction for connection with said contact prongs, a pair of prongreceiving holes arranged on each side of said passage-way and extending inwardly but not through said base from the side opposite that through which said conductors enter, each of said prongs having a portion too large for ready insertion in the corresponding hole but forced into said hole to secure the prong in position and prevent 5 withdrawal, the outer portions of said prongs extending in the direction first mentioned, a recess extending from the open end of each hole to said passageway, the ends of said conductors extending in opposite directions in said recesses and 10 frictionally held between said forced-ln portions of said prongs and the walls of the holes to secure said conductors In good electrical contact with said prongs.
  9. 9
    In a plug construction, the combination of a 15 plug body formed of Insulating material and having a recess in the face at one end and an axial bore extending from said recess through said body, insulated conductors entering said bore at the other end of said body and extending there- 20 through, and a pair of substantially parallel blade members each having a pressed fit in a cavity extending inwardly from said recess near the exit end of said bore, the ends of said conductors being bare and each end extending along the side 25 of one of said blade members and folded around the same to engage the other side also, said folded ends being compressed between the walls of said cavities and said blade members, to establish mechanical and electrical connection there- 80 with.
  10. 10
    In a plug construction, the combination of a plug base of insulating material having a recess in the face at one end and having an axial bore extending from said recess through said base, In- 85 sulated conductors entering said bore at the other end of said base and extending therethrough a pair of substantially parallel blades, the inner portions of which fit within a pair of substantially parallel openings in said base, said open- 40 ings being spaced on opposite sides of said bore and communicating with the outer end thereof by means of said end recess, said blades having notches in the inner ends thereof, said conductors being bent apart and positioned in said end 45 recess and having the ends thereof bared and each bent to follow the said inner portion of a blade along one side, through said notch, and back along the other side, and clamped against said blade by the wall of the opening, to main- 60 tain effective electrical and mechanical contact therewith.
  11. 11
    In combination, a one-piece, molded attachment plug of insulating material, having a longitudinal opening therethrough, a pair of sub- 65 stantially smooth bore recesses in one end of said plug extending Into but not through the same, and arranged on opposite sides of said longitudinal opening substantially parallel thereto, contact blades having their Inner portions within 80 said recesses, said portions having a transverse dimension in excess of that required for a sliding fit, whereby said blades are assembled by forcing the same into said recesses thereby gripping the walls thereof to maintain the assembled relation, 65 said plug having a transverse groove in the outer end, connecting the outer ends of said recesses with the outer end of said longitudinal opening, to receive and partially enclose conductors led in 70 from the opposite end of said longitudinal opening and extending to said blades.
  12. 12
    In a device of the character described including contact blades and a body member for mounting the same, said body member being com- 75 2,116,642 posed of insulating material and having cavities therein into which said blades are pressed to assemble the same, said cavities constituting means for mounting the said blades in the said 5 body member, the portion of each blade which occupies a cavity having a barb formed thereon to secure the same in position and prevent withdrawal thereof, and conductors each having a bared end positioned in one of said cavities in 10 good electrical contact with the corresponding blade.
  13. 13
    An attachment plug cap comprising contact prongs and a preformed supporting base therefor having a passageway therethrough, con15 ductors in said passageway, a pair of prong-receiving holes arranged on each side of said pas sage-way and extending inwardly but not through said base from the side opposite that through which said conductors enter, each of said prongs having a projection thereon with an inclined face sloping in a direction to facilitate insertion but i not withdrawal of the prong from the corresponding hole, said prongs having portions seated in said holes with other portions extending outwardly, a recess extending from the open end of each hole to said passageway, the ends of said 1 conductors extending in opposite directions in said recesses and frictionally held against said seated portions to secure said conductors in good electrical contact with said prongs. S EARL MARTIN.
Independent claims13