US2372653A - Electrical terminal - Google Patents

Electrical terminal Download PDF

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Publication number
US2372653A
US2372653A US330438A US33043840A US2372653A US 2372653 A US2372653 A US 2372653A US 330438 A US330438 A US 330438A US 33043840 A US33043840 A US 33043840A US 2372653 A US2372653 A US 2372653A
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US
United States
Prior art keywords
screw
terminal
washer
shank
piercing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US330438A
Inventor
Alan L Becket
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US330438A priority Critical patent/US2372653A/en
Application granted granted Critical
Publication of US2372653A publication Critical patent/US2372653A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/34—Conductive members located under head of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2475—Connections using contact members penetrating or cutting insulation or cable strands the contact members penetrating the insulation being actuated by screws, nuts or bolts
    • H01R4/2479—Connections using contact members penetrating or cutting insulation or cable strands the contact members penetrating the insulation being actuated by screws, nuts or bolts penetrating the area under the screw head
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/955—Locked bolthead or nut
    • Y10S411/956—Automatic base clutch
    • Y10S411/957—Biting tooth
    • Y10S411/959—Bolt- or nut-carried
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/999—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener with retainer, e.g. tether
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3958—Screw clamp

Definitions

  • My invention relates to improvements in electric terminals in which electric connection is made between insulated wire and the terminals without removing the insulation. Contact is effected between insulated wires and terminals by crushing, piercing or impaling the insulation. The wire is pressed against the terminal, which terminal contains sharp prongs at its end or about a terminal screw, rivet, nail, eyelet, washer or disc, which said terminal screw, rivet, nail, eyelet, washer, or disc has sharp prongs to crush or pierce the insulation and thus make contact.
  • the pressure of the insulated wire against the terminal has a function in maintaining a pressure upon the threads of the terminal screw to eliminate the tendency of the screw coming loose under vibration, wear, expansion or contraction. Play between the threads of the screw and the threads into which it is screwed is eliminated in my device.
  • the resiliency of the insulation material gives the desired pressure to press the terminal against the screw head to maintain frictional contact between the engaging threads.
  • Figure .1 is a clamping screw arrangement.
  • Figure 2 is bottom view of the piercing washwasher shown in Figure 1.
  • Reading on Figure 1 is a clamping screw arrangement and consists of the following parts: I9 is screw head, H0 is shank portion of screw, I l I rolled out thread portion of screw, H2 piercing washer, H3 contact prongs, H4 locking ribs.
  • I9 is screw head
  • H0 is shank portion of screw
  • I l I rolled out thread portion of screw
  • H2 piercing washer H3 contact prongs
  • H4 locking ribs H4 locking ribs.
  • the unthreaded portion H0 of the screw shank directly below the head portion I09 of the screw is smaller in diameter than the threaded portion Ill.
  • the portion H0 of the shank provides an annular groove or recess in which the washer H2 is free to rotate.
  • the rolled out threads I ll hold the washer from sliding down the screw shank.
  • Figure 2 is bottom view of the piercing washer 2, shown in Figure 1 I claim:
  • a clamping screw arrangement comprising a headed screw having a. threaded shank, a washer with contact prongs tapered for piercing insulation on an insulated conductor wire and making electrical contact with the conductor when the shank is screwed into a cooperating member, said washer being rotatable on the screw shank and being non-separable therefrom.
  • a clamping screw arrangement comprising a headed screw having a. threaded shank, a washer with contact prongs tapered to a point to pierce the insulation of an insulated conductor wire and make electrical contact with the condu'ctor when the shank is screwed into a cooperating member, said washer being rotatable on the screw shank and being non-separable therefrom.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Description

April 3, 1945. A. 1.. BECKET 2,372,653
' ELECTRICAL TERMINAL Filed April 19, 1940 Tlci.
NVENTOR ALAN L. EEC/(5T ATTORNEY Patented Apr. 3, 1945 UNITED STATES PATENT OFFICE 2,372,653 ELECTRICAL TERMINAL Alan L. Becket, East Orange, N. J.
Application April 19, 1940, Serial No. 330,438
2 Claims.
My invention relates to improvements in electric terminals in which electric connection is made between insulated wire and the terminals without removing the insulation. Contact is effected between insulated wires and terminals by crushing, piercing or impaling the insulation. The wire is pressed against the terminal, which terminal contains sharp prongs at its end or about a terminal screw, rivet, nail, eyelet, washer or disc, which said terminal screw, rivet, nail, eyelet, washer, or disc has sharp prongs to crush or pierce the insulation and thus make contact.
As will be apparent from the disclosures in my prior patents, #2-,053,060 for Attachment plug and #1,991,045 for Electric plug for improvements in piercing insulated wires in such devices an essential feature in such piercing is that it be accomplished by a permanent and stable piercing terminal which is simple in construction and inexpensive to manufacture and which can be operated by anyone whether skilled or unskilled in the art of electrical equipment. Other essential features are that such improvements can be used in connection with a terminal box, socket, receptacle, attachment plug, portable appliances such as vacuum cleaners, toasters, and the like in which the terminal connection is subject to constant tugging, pulling or vibration, switch board or tumbler board or any other type of electrical connections.
It should be pointed out that the pressure of the insulated wire against the terminal has a function in maintaining a pressure upon the threads of the terminal screw to eliminate the tendency of the screw coming loose under vibration, wear, expansion or contraction. Play between the threads of the screw and the threads into which it is screwed is eliminated in my device. The resiliency of the insulation material gives the desired pressure to press the terminal against the screw head to maintain frictional contact between the engaging threads.
It is a simplified type ,of-construction, inexpensive to manufacture and easy to use. Its mm and diversified uses are too numerous to mention and its simplicity lends to its general usefulness. Some of its forms and uses are disclosed in the following drawing to which reference is made; however applicant does not confine his invention to those disclosed as many other uses and purposes not disclosed in said drawing are possible.
Figure .1 is a clamping screw arrangement.
Figure 2 is bottom view of the piercing washwasher shown in Figure 1.
Reading on Figure 1 is a clamping screw arrangement and consists of the following parts: I9 is screw head, H0 is shank portion of screw, I l I rolled out thread portion of screw, H2 piercing washer, H3 contact prongs, H4 locking ribs. In Figure 1, the unthreaded portion H0 of the screw shank directly below the head portion I09 of the screw is smaller in diameter than the threaded portion Ill. The portion H0 of the shank provides an annular groove or recess in which the washer H2 is free to rotate. The rolled out threads I ll hold the washer from sliding down the screw shank.
Figure 2 is bottom view of the piercing washer 2, shown in Figure 1 I claim:
1. A clamping screw arrangement comprising a headed screw having a. threaded shank, a washer with contact prongs tapered for piercing insulation on an insulated conductor wire and making electrical contact with the conductor when the shank is screwed into a cooperating member, said washer being rotatable on the screw shank and being non-separable therefrom.
2. A clamping screw arrangement comprising a headed screw having a. threaded shank, a washer with contact prongs tapered to a point to pierce the insulation of an insulated conductor wire and make electrical contact with the condu'ctor when the shank is screwed into a cooperating member, said washer being rotatable on the screw shank and being non-separable therefrom.
ALAN L. BECKET.
US330438A 1940-04-19 1940-04-19 Electrical terminal Expired - Lifetime US2372653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US330438A US2372653A (en) 1940-04-19 1940-04-19 Electrical terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US330438A US2372653A (en) 1940-04-19 1940-04-19 Electrical terminal

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US2372653A true US2372653A (en) 1945-04-03

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525123A (en) * 1947-08-05 1950-10-10 Frank Louis Electric wire connecting clamp
US2537061A (en) * 1946-02-23 1951-01-09 Wilbur M Kohring Resistance unit
US2648051A (en) * 1950-12-16 1953-08-04 Breeze Corp Battery terminal connector
US2654857A (en) * 1949-10-27 1953-10-06 Finkel Julius Antenna accessory
US2682647A (en) * 1951-04-28 1954-06-29 Theodore C Smith Attachment plug cap
US2687517A (en) * 1951-03-30 1954-08-24 Pass & Seymour Inc Wire terminal or connector
US2779376A (en) * 1955-05-04 1957-01-29 Illinois Tool Works Fastener having folded, split-ring helical lock washer retained thereon
US2875663A (en) * 1954-07-01 1959-03-03 Illinois Tool Works Threadless stud adapted for insertion in keyhole slot
US2946039A (en) * 1957-11-06 1960-07-19 Durakool Inc Electrical terminal
US2981921A (en) * 1958-11-03 1961-04-25 Arcoa Inc Connector for connecting a branch wire to a current conducting through wire
US3065442A (en) * 1959-05-27 1962-11-20 Hubbell Inc Harvey Wire terminal clamp for electric wiring devices
US3177456A (en) * 1963-01-21 1965-04-06 Allen Bradley Co Wire clamp assembly
DE1212609B (en) * 1962-09-28 1966-03-17 Siemens Ag Terminal for electrical conductors, preferably insulated with plastic
US3258733A (en) * 1959-03-19 1966-06-28 Wire connector
US3263728A (en) * 1964-02-20 1966-08-02 Republic Ind Corp Captive bolt
DE1489552B1 (en) * 1963-09-02 1970-10-15 Trilux Lenze Gmbh & Co Kg Light with tooth washer
US3967875A (en) * 1975-03-10 1976-07-06 Textron, Inc. Captive fastener and captive washer assembly
US4149767A (en) * 1978-04-03 1979-04-17 Northern Telecom Limited Self-shearing connector for electrical conductors
US5173060A (en) * 1988-03-04 1992-12-22 Raychem Corporation Telecommunications terminal block or adapter
US6106077A (en) * 1996-08-19 2000-08-22 Dr. Ing. H.C.F. Porsche Ag Wheel bolt
US20060275098A1 (en) * 2005-06-03 2006-12-07 Frederic Kramer Washer with crush zone
US8070404B1 (en) * 2008-11-06 2011-12-06 Middle Atlantic Products, Inc. Bonding fastener assembly for electrical grounding
US20130039719A1 (en) * 2011-08-09 2013-02-14 David L. Katz Take down nail/screw
US20130333195A1 (en) * 2012-06-13 2013-12-19 Pinnacle Companies, Inc. Method of connecting tank segments
US11362446B2 (en) * 2017-08-08 2022-06-14 Cochrane Steel Products (Pty) Ltd Earthing technique

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537061A (en) * 1946-02-23 1951-01-09 Wilbur M Kohring Resistance unit
US2525123A (en) * 1947-08-05 1950-10-10 Frank Louis Electric wire connecting clamp
US2654857A (en) * 1949-10-27 1953-10-06 Finkel Julius Antenna accessory
US2648051A (en) * 1950-12-16 1953-08-04 Breeze Corp Battery terminal connector
US2687517A (en) * 1951-03-30 1954-08-24 Pass & Seymour Inc Wire terminal or connector
US2682647A (en) * 1951-04-28 1954-06-29 Theodore C Smith Attachment plug cap
US2875663A (en) * 1954-07-01 1959-03-03 Illinois Tool Works Threadless stud adapted for insertion in keyhole slot
US2779376A (en) * 1955-05-04 1957-01-29 Illinois Tool Works Fastener having folded, split-ring helical lock washer retained thereon
US2946039A (en) * 1957-11-06 1960-07-19 Durakool Inc Electrical terminal
US2981921A (en) * 1958-11-03 1961-04-25 Arcoa Inc Connector for connecting a branch wire to a current conducting through wire
US3258733A (en) * 1959-03-19 1966-06-28 Wire connector
US3065442A (en) * 1959-05-27 1962-11-20 Hubbell Inc Harvey Wire terminal clamp for electric wiring devices
DE1212609B (en) * 1962-09-28 1966-03-17 Siemens Ag Terminal for electrical conductors, preferably insulated with plastic
US3177456A (en) * 1963-01-21 1965-04-06 Allen Bradley Co Wire clamp assembly
DE1489552B1 (en) * 1963-09-02 1970-10-15 Trilux Lenze Gmbh & Co Kg Light with tooth washer
US3263728A (en) * 1964-02-20 1966-08-02 Republic Ind Corp Captive bolt
US3967875A (en) * 1975-03-10 1976-07-06 Textron, Inc. Captive fastener and captive washer assembly
US4149767A (en) * 1978-04-03 1979-04-17 Northern Telecom Limited Self-shearing connector for electrical conductors
US5173060A (en) * 1988-03-04 1992-12-22 Raychem Corporation Telecommunications terminal block or adapter
US6106077A (en) * 1996-08-19 2000-08-22 Dr. Ing. H.C.F. Porsche Ag Wheel bolt
US20060275098A1 (en) * 2005-06-03 2006-12-07 Frederic Kramer Washer with crush zone
US7198445B2 (en) * 2005-06-03 2007-04-03 Fan Disc Corporation Washer with crush zone
US8070404B1 (en) * 2008-11-06 2011-12-06 Middle Atlantic Products, Inc. Bonding fastener assembly for electrical grounding
US20130039719A1 (en) * 2011-08-09 2013-02-14 David L. Katz Take down nail/screw
US20130333195A1 (en) * 2012-06-13 2013-12-19 Pinnacle Companies, Inc. Method of connecting tank segments
US11362446B2 (en) * 2017-08-08 2022-06-14 Cochrane Steel Products (Pty) Ltd Earthing technique

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