US2765453A - Electrical contactors - Google Patents

Electrical contactors Download PDF

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Publication number
US2765453A
US2765453A US289525A US28952552A US2765453A US 2765453 A US2765453 A US 2765453A US 289525 A US289525 A US 289525A US 28952552 A US28952552 A US 28952552A US 2765453 A US2765453 A US 2765453A
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United States
Prior art keywords
arms
tip
slit
band
contactor
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Expired - Lifetime
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US289525A
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Donald R Macfarlane
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AT&T Corp
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Western Electric Co Inc
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Priority to US289525A priority Critical patent/US2765453A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only

Definitions

  • This invention relates to electrical contactors, and more particularly to quick-detachable electrical contactors.
  • the tips are connected to the testing apparatus, and it is advantageous to make the connections and disconnections quickly and with a minimum of effort and attention by the operator.
  • An object of the invention is to provide new and improved electrical contactors.
  • Another object of the invention is to provide new and improved quick-detachable contactors.
  • a further object of the invention is to provide connectors to which tipped leads can be connected and disconnected by a simple pulling action.
  • An electrical connector illustrating certain features of the invention may include a guide provided with spring fingers which contact a tip on a lead when the tip is pulled into the guide.
  • the guide may be so constructed that the tip may be pulled out of the guide to disconnect it therefrom.
  • FIG. 1 is a fragmentary plan view of an electrical contactor forming a specific embodiment of the invention
  • Fig. 2 is a fragmentary vertical section taken along line 2-2 of Fig. 1;
  • Fig. 3 is an enlarged transverse section taken along line 33 of Fig. 2, and
  • Fig. 4 is a fragmentary perspective view of the contactor shown in Fig. 1.
  • a contactor provided with a generally funnelshaped body portion having a tapered slit 11 at the top thereof.
  • Tabs 12 and 13 are provided for mounting the contactor on a base of insulating material 15, and the tab 12 is secured to the body 10 by an offset portion 17.
  • the lefthand end of the body portion 10 is generally channel-shaped as illustrated in Figs. 3 and 4, and spring arms 20 are formed by slits 21.
  • the arms themselves are composed of highly resilient electroconductive material and may be brazed to the body portion proper.
  • the arms 20 press toward a bottom portion 22 and press against a band 23 of a contact tip 24 to press the band and a spade portion 25 against the bottom portion 22.
  • a cord 26 carrying the contact tip 24 may be electrically connected to the contactor through the tip 24 by inserting the cord and tip laterally into the contactor through the righthand portion of the slit 11, and then pulling the cord and tip to the left, as viewed in Fig. 1, to a location such as shown in Fig. 2, in which the spring arms 20 which are formed of electrically conductive material press against the band 23 and press the tip against the bottom portion 22, which also is formed of electrically conductive material.
  • a lead 28 secured to the con- States Patent tactor serves to complete the circuit thereby.
  • the spring arms are twisted to such positions that they contact the spade 25 as well as the band 23, and are provided with lobes 30 spaced more closely to the bottom portion 22 of the contactor than the rest of the arms to contact the tip forcefully.
  • Arms 31 of a band 32 fixed to the contactor limit upward movement of the arms 20 and increase the contacting pressure of the arms. This increased pressure also acts as a signal to an operator that good contact has been made.
  • the band has a shank portion 40 held with the shank portion 17 of the contactor. To release the tip from the contactor, the cord 26 merely is pulled to pull the tip 24 from between the arms 20 and the base 22.
  • the width of the slit 11 at the righthand portion thereof, as viewed in Fig. 1, is sufficiently wide to permit the contact tip 24 to be moved laterally therethrough into the tube.
  • the spacing between the contact spring arms 26 is sufficiently wide to permit the cord 26 to move freely therebetween, but is sufficiently narrow that the band 23 of the tip cannot be moved through that space.
  • the twist in the spring arms is such that the spring arms partially face one another so that they tend to center the contact tip therebetween.
  • the contactor is highly effective no matter what the degree of rotation of the contact tip 24 is relative to the contactor. That is, the tip 24 may be pulled into effective contacted position while in such a rotated position that one side of the spade portion 25 travels in the slit 1]. as well as when the tip is in such a position that both sides of the spade portion are beneath the spring arms 20. Consequently, the operator need not orient the tip 24 by rotation thereof before pulling the tip into the contactor.
  • the above-described contactor permits easy insertion of a tip cord and makes contact therewith with a single motion of the tip by an operator, and the tip may be disconnected from the contactor merely by an easy pull on the cord 26. Thus, very little effort and skill on the part of the operator are required to connect and disconnect the tip cord with and from the contactor.
  • a quick-detachable electrical contactor which comprises a funnel composed of electrically conducting material having a tapered slit extending therealong through the Wider portion of which a cord having a tip thereon may be advanced laterally to place the tip in the funnel, said funnel being slit along the narrower portion of the slit to form a pair of arms for urging the tip on the cord against a side of the funnel.
  • An electrical contactor which comprises a tube composed of electro-conductive material having an open slit extending from one end to the other and also being cut from one end of the tube toward the other end thereof to form arms extending along a portion of the slit, said arms being composed of resilient material, the width of the portion of the slit at the end of the tube opposite the arms being sufficient to permit a tip having a band secured to a cord to be moved laterally therethrough to insert the tip into the tube, the width of the portion of the slit formed by the arms being insufiicient to permit the band to be moved through the slit and being sumcient to permit the cord to be moved therethrough, said arms being twisted to positions in which they partially face one another so that they tend to center a tip pulled through the tube, said arms also being provided with lobes positioned between the ends thereof.
  • An electrical contactor which comprises a tube composedof electro-conductive material having an open slit extending from one end to the other and also being cut from one end of the tube toward the other end thereof to form arms extending along a portion of the slit, said arms being composed of resilient material, the width of the portion of the slit at the end of the tube opposite the arms being sufiicient to permit a tip having a band secured to a cord to be moved laterally therethrough to insert the tip into the tube, the width of the portion of the slit formed by arms being insufiicient to permit the band to be moved through the slit and being sufiicient to permit the cord to be moved therethrough, said arms being twisted to positions in which they partially face one another so that they tend to center a tip pulled through the tube, said arms also being provided with lobes positioned between the ends thereof, and a pair of stops projecting over the free ends of the arms for limiting movement of the arms away from the tube, the stops being in such positions that they are engaged
  • An electrical contactor which comprises a tube composed of electro-conductive material having an open slit extending from one end to the other and also being cut from one end of the tube toward the other end thereof to form arms extending along a portion of the slit, said arms being composed of resilient material, the width of the portion of the slit at the end of the tube opposite the arms being sufficient to permit a tip having a band secured to a cord to be moved laterally therethrough to insert the tip into the tube, the width of the portion of the slit formed by the arms being insufficient to permit the band to be moved through the slit and being sufiicient to permit the cord to be moved therethrough, said arms being twisted to positions in which they partially face one another so that they tend to center a tip pulled through the tube, said arms also being provided with lobes positioned between the ends thereof, and a C-shaped band fixed to the tube in a position in which the ends thereof project over the free ends of the arms for limiting movement of the arms away from the tube, the ends of the G
  • An electrical contactor which comprises a contacting element provided with a slit electroconductive tube, the slit extending along the entire length of said tube and being sufliciently wide along a portion thereof to permit a tipped cord to be advanced therethrough, and means spaced adjacent to the tube for pressing said tip on a cord so advanced against the tube to form electrical contact therebetween.
  • An electrical connector which comprises an element having a channel, a pair of resilient arms mounted in the channel in such a manner that the arms partially face one another and partially face the bottom of the channel, said arms being urged toward the bottom of the channel and toward one another. and being so spaced along a portion thereof from one another and the bottom of the channel that a cord on which a tip provided with a band portion may be moved between the arms, said arm being so spaced along another portion thereof that the band portion of the tip cannot be moved through the space between the arms but can be moved between the bottom of the channel and the arms in contact therewith, and means for limiting movement of the arms away from one another and from the bottom of the channel, one of the arms and the channel being electroconductive.
  • An electrical contactor which comprises a substantially U-shaped member, said member including a base portion and upwardly extending legs, a pair of resilient spaced arms mounted to said member in such a manner that said arms partially face one another and partially face said base portion to form a passage therewith, said arms being urged toward said base portion and toward one another and being so spaced along a portion thereof from one another and said base portion that a cord on which a tip provided with a band portion may be moved between said arms, said arms being so spaced along another portion thereof that the band portion cannot be moved through the space between said arms but can be moved between said base portion and said arms in contact therewith, and meansfor limiting movement of said arms away from one another and from said base portion, one of said arms and said base portion being electroconductive.

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Description

get 1956 D. R. M FARLANE I ELECTRICAL CONTACTORS Filed may 23, 1952 R W W W ELECTRICAL CONTACTORS Donald R. MacFai-lane, Indianapolis, Ind., assignor to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application May 23, 1952, Serial No. 289,525
7 Claims. (Cl. 339-258) This invention relates to electrical contactors, and more particularly to quick-detachable electrical contactors.
In testing electrical devices having leads provided with tips, the tips are connected to the testing apparatus, and it is advantageous to make the connections and disconnections quickly and with a minimum of effort and attention by the operator.
An object of the invention is to provide new and improved electrical contactors.
Another object of the invention is to provide new and improved quick-detachable contactors.
A further object of the invention is to provide connectors to which tipped leads can be connected and disconnected by a simple pulling action.
An electrical connector illustrating certain features of the invention may include a guide provided with spring fingers which contact a tip on a lead when the tip is pulled into the guide. The guide may be so constructed that the tip may be pulled out of the guide to disconnect it therefrom.
A complete understanding of the invention may be obtained from the following detailed description of an electrical contactor forming a specific embodiment thereof, when read in conjunction with the appended drawings, in which Fig. 1 is a fragmentary plan view of an electrical contactor forming a specific embodiment of the invention;
Fig. 2 is a fragmentary vertical section taken along line 2-2 of Fig. 1;
Fig. 3 is an enlarged transverse section taken along line 33 of Fig. 2, and
Fig. 4 is a fragmentary perspective view of the contactor shown in Fig. 1.
Referring now in detail to the drawings, there is shown therein a contactor provided with a generally funnelshaped body portion having a tapered slit 11 at the top thereof. Tabs 12 and 13 are provided for mounting the contactor on a base of insulating material 15, and the tab 12 is secured to the body 10 by an offset portion 17. The lefthand end of the body portion 10 is generally channel-shaped as illustrated in Figs. 3 and 4, and spring arms 20 are formed by slits 21. The arms themselves are composed of highly resilient electroconductive material and may be brazed to the body portion proper. The arms 20 press toward a bottom portion 22 and press against a band 23 of a contact tip 24 to press the band and a spade portion 25 against the bottom portion 22.
A cord 26 carrying the contact tip 24 may be electrically connected to the contactor through the tip 24 by inserting the cord and tip laterally into the contactor through the righthand portion of the slit 11, and then pulling the cord and tip to the left, as viewed in Fig. 1, to a location such as shown in Fig. 2, in which the spring arms 20 which are formed of electrically conductive material press against the band 23 and press the tip against the bottom portion 22, which also is formed of electrically conductive material. A lead 28 secured to the con- States Patent tactor serves to complete the circuit thereby. The spring arms are twisted to such positions that they contact the spade 25 as well as the band 23, and are provided with lobes 30 spaced more closely to the bottom portion 22 of the contactor than the rest of the arms to contact the tip forcefully. Arms 31 of a band 32 fixed to the contactor limit upward movement of the arms 20 and increase the contacting pressure of the arms. This increased pressure also acts as a signal to an operator that good contact has been made. The band has a shank portion 40 held with the shank portion 17 of the contactor. To release the tip from the contactor, the cord 26 merely is pulled to pull the tip 24 from between the arms 20 and the base 22.
The width of the slit 11 at the righthand portion thereof, as viewed in Fig. 1, is sufficiently wide to permit the contact tip 24 to be moved laterally therethrough into the tube. The spacing between the contact spring arms 26 is sufficiently wide to permit the cord 26 to move freely therebetween, but is sufficiently narrow that the band 23 of the tip cannot be moved through that space. The twist in the spring arms is such that the spring arms partially face one another so that they tend to center the contact tip therebetween. The contactor is highly effective no matter what the degree of rotation of the contact tip 24 is relative to the contactor. That is, the tip 24 may be pulled into effective contacted position while in such a rotated position that one side of the spade portion 25 travels in the slit 1]. as well as when the tip is in such a position that both sides of the spade portion are beneath the spring arms 20. Consequently, the operator need not orient the tip 24 by rotation thereof before pulling the tip into the contactor.
The above-described contactor permits easy insertion of a tip cord and makes contact therewith with a single motion of the tip by an operator, and the tip may be disconnected from the contactor merely by an easy pull on the cord 26. Thus, very little effort and skill on the part of the operator are required to connect and disconnect the tip cord with and from the contactor.
It is to be understood that the above-described arrangements are simply illustrative of the principles of the invention. Numerous other arrangements may be readily devised by those skilled in the art which will embody the principles of the invention and fall within the spirit and scope thereof.
What is claimed is:
1. A quick-detachable electrical contactor, which comprises a funnel composed of electrically conducting material having a tapered slit extending therealong through the Wider portion of which a cord having a tip thereon may be advanced laterally to place the tip in the funnel, said funnel being slit along the narrower portion of the slit to form a pair of arms for urging the tip on the cord against a side of the funnel.
2. An electrical contactor, which comprises a tube composed of electro-conductive material having an open slit extending from one end to the other and also being cut from one end of the tube toward the other end thereof to form arms extending along a portion of the slit, said arms being composed of resilient material, the width of the portion of the slit at the end of the tube opposite the arms being sufficient to permit a tip having a band secured to a cord to be moved laterally therethrough to insert the tip into the tube, the width of the portion of the slit formed by the arms being insufiicient to permit the band to be moved through the slit and being sumcient to permit the cord to be moved therethrough, said arms being twisted to positions in which they partially face one another so that they tend to center a tip pulled through the tube, said arms also being provided with lobes positioned between the ends thereof.
3. An electrical contactor, which comprises a tube composedof electro-conductive material having an open slit extending from one end to the other and also being cut from one end of the tube toward the other end thereof to form arms extending along a portion of the slit, said arms being composed of resilient material, the width of the portion of the slit at the end of the tube opposite the arms being sufiicient to permit a tip having a band secured to a cord to be moved laterally therethrough to insert the tip into the tube, the width of the portion of the slit formed by arms being insufiicient to permit the band to be moved through the slit and being sufiicient to permit the cord to be moved therethrough, said arms being twisted to positions in which they partially face one another so that they tend to center a tip pulled through the tube, said arms also being provided with lobes positioned between the ends thereof, and a pair of stops projecting over the free ends of the arms for limiting movement of the arms away from the tube, the stops being in such positions that they are engaged by the free ends of the arms as the band of the tip is pulled into contact with the lobes to increase the contact pressure between the arms and the band of the tip.
4. An electrical contactor, which comprises a tube composed of electro-conductive material having an open slit extending from one end to the other and also being cut from one end of the tube toward the other end thereof to form arms extending along a portion of the slit, said arms being composed of resilient material, the width of the portion of the slit at the end of the tube opposite the arms being sufficient to permit a tip having a band secured to a cord to be moved laterally therethrough to insert the tip into the tube, the width of the portion of the slit formed by the arms being insufficient to permit the band to be moved through the slit and being sufiicient to permit the cord to be moved therethrough, said arms being twisted to positions in which they partially face one another so that they tend to center a tip pulled through the tube, said arms also being provided with lobes positioned between the ends thereof, and a C-shaped band fixed to the tube in a position in which the ends thereof project over the free ends of the arms for limiting movement of the arms away from the tube, the ends of the G-shaped band being in such positions that they are engaged by the free ends of the arms as the band of the tip is pulled into contact with the lobes to increase the contact pressure between the arms and the band of the tip.
5. An electrical contactor, which comprises a contacting element provided with a slit electroconductive tube, the slit extending along the entire length of said tube and being sufliciently wide along a portion thereof to permit a tipped cord to be advanced therethrough, and means spaced adjacent to the tube for pressing said tip on a cord so advanced against the tube to form electrical contact therebetween.
6. An electrical connector, which comprises an element having a channel, a pair of resilient arms mounted in the channel in such a manner that the arms partially face one another and partially face the bottom of the channel, said arms being urged toward the bottom of the channel and toward one another. and being so spaced along a portion thereof from one another and the bottom of the channel that a cord on which a tip provided with a band portion may be moved between the arms, said arm being so spaced along another portion thereof that the band portion of the tip cannot be moved through the space between the arms but can be moved between the bottom of the channel and the arms in contact therewith, and means for limiting movement of the arms away from one another and from the bottom of the channel, one of the arms and the channel being electroconductive.
7. An electrical contactor, which comprises a substantially U-shaped member, said member including a base portion and upwardly extending legs, a pair of resilient spaced arms mounted to said member in such a manner that said arms partially face one another and partially face said base portion to form a passage therewith, said arms being urged toward said base portion and toward one another and being so spaced along a portion thereof from one another and said base portion that a cord on which a tip provided with a band portion may be moved between said arms, said arms being so spaced along another portion thereof that the band portion cannot be moved through the space between said arms but can be moved between said base portion and said arms in contact therewith, and meansfor limiting movement of said arms away from one another and from said base portion, one of said arms and said base portion being electroconductive.
References Cited in the file of this patent UNITED STATES PATENTS 1,092,472 Breaznell Apr. 7, 1914 1,331,928 Katzung Feb. 24, 1920 1,348,434 Marshick Aug. 3, 1920 1,451,548 Kreisheld Apr. 10, 1923 1,531,816 Russell Mar. 31, 1925 1,586,279 Batchelder May 25, 1926 1,682,994 Simon Sept. 4, 1928 1,995,115 Douglas Mar. 19, 1935 2,017,940 Bessey Oct. 22, 1935 2,211,726 Knutson Aug. 13, 1940 2,222,252 Cochran et a1. Nov. 19, 1940 2,598,824 ONeill June 3, 1952 2,591,009 Riche Apr. 1, 1952
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131017A (en) * 1961-04-20 1964-04-28 Ind Electronic Hardware Corp Edge board connector
US3369212A (en) * 1965-11-24 1968-02-13 Amp Inc Electrical connector
US3729701A (en) * 1970-10-03 1973-04-24 Amp Inc Longitudinal top spring receptacle

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1092472A (en) * 1912-09-21 1914-04-07 Joseph H Breaznell Connecting-clip for electrical conductors.
US1331928A (en) * 1916-12-04 1920-02-24 Gen Electric Connector
US1348434A (en) * 1919-10-31 1920-08-03 Oliver J Marshick Adapter for electrode-holders
US1451548A (en) * 1919-11-20 1923-04-10 Westinghouse Electric Products Contact terminal
US1531816A (en) * 1923-08-30 1925-03-31 Thomas C Russell Electrical connecter
US1586279A (en) * 1923-07-14 1926-05-25 Brooklyn Metal Stamping Corp Electric connecter
US1682994A (en) * 1927-12-16 1928-09-04 Charles L Simon Rope holder
US1995115A (en) * 1932-06-02 1935-03-19 Harry A Douglas Connecter
US2017940A (en) * 1933-01-14 1935-10-22 Cinch Mfg Corp Socket for vacuum tubes and the like
US2211726A (en) * 1938-03-05 1940-08-13 Cinch Mfg Corp Electrical socket
US2222252A (en) * 1939-07-18 1940-11-19 Cole Hersee Company Electrical connector
US2591009A (en) * 1948-12-20 1952-04-01 Honeywell Regulator Co Separable electrical connector
US2598824A (en) * 1948-05-01 1952-06-03 Sylvania Electric Prod Electrical socket device

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1092472A (en) * 1912-09-21 1914-04-07 Joseph H Breaznell Connecting-clip for electrical conductors.
US1331928A (en) * 1916-12-04 1920-02-24 Gen Electric Connector
US1348434A (en) * 1919-10-31 1920-08-03 Oliver J Marshick Adapter for electrode-holders
US1451548A (en) * 1919-11-20 1923-04-10 Westinghouse Electric Products Contact terminal
US1586279A (en) * 1923-07-14 1926-05-25 Brooklyn Metal Stamping Corp Electric connecter
US1531816A (en) * 1923-08-30 1925-03-31 Thomas C Russell Electrical connecter
US1682994A (en) * 1927-12-16 1928-09-04 Charles L Simon Rope holder
US1995115A (en) * 1932-06-02 1935-03-19 Harry A Douglas Connecter
US2017940A (en) * 1933-01-14 1935-10-22 Cinch Mfg Corp Socket for vacuum tubes and the like
US2211726A (en) * 1938-03-05 1940-08-13 Cinch Mfg Corp Electrical socket
US2222252A (en) * 1939-07-18 1940-11-19 Cole Hersee Company Electrical connector
US2598824A (en) * 1948-05-01 1952-06-03 Sylvania Electric Prod Electrical socket device
US2591009A (en) * 1948-12-20 1952-04-01 Honeywell Regulator Co Separable electrical connector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131017A (en) * 1961-04-20 1964-04-28 Ind Electronic Hardware Corp Edge board connector
US3369212A (en) * 1965-11-24 1968-02-13 Amp Inc Electrical connector
US3729701A (en) * 1970-10-03 1973-04-24 Amp Inc Longitudinal top spring receptacle

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