US2547866A - Electrical terminal - Google Patents

Electrical terminal Download PDF

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Publication number
US2547866A
US2547866A US760656A US76065647A US2547866A US 2547866 A US2547866 A US 2547866A US 760656 A US760656 A US 760656A US 76065647 A US76065647 A US 76065647A US 2547866 A US2547866 A US 2547866A
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United States
Prior art keywords
terminal
spring
electrical terminal
stud
bracket
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Expired - Lifetime
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US760656A
Inventor
Edwin G Hingelberg
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Individual
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Priority to US760656A priority Critical patent/US2547866A/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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
    • H01R9/20—Fastening by means of rivet or eyelet
    • 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

Definitions

  • the object of this invention is to mount an electrical terminal on an ignition system and to insulate the terminal from the supporting arm.
  • the specific object of this invention is to make it possible to remove and replace the electrical connection from the terminal without disturbing the adjustment of the spring bending force.
  • the adjustment of this force determines the pressure between the tungsten alloy contact points and also the pressure between the fiber rubbing block and the cam. When this force is too weak the top speed of the engine is limited.
  • Fig. 1 shows a cross-sectional elevation of the terminal before it is locked in place.
  • Fig. 2 shows a cross-sectional plan view of the terminal locked in place together with the flat spring strip and the circuit breaker arm and the cam which operates the circuit breaker arm.
  • Fig. 3 shows the cross-sectional elevation through the paper insulation.
  • Fig. 4 is an end view of the terminal before being locked in place.
  • Fig. 5 shows the slot in the end of the steel spring.
  • I5 is a flange at the inner end of the squared portion.
  • I8 is the supporting brackets.
  • 26 is the paper insulation placed between the terminal l0 and its supporting bracket I8.
  • the flat steel spring strip which is slotted as shown.
  • the thin conducting copper strip 24 is also shown slotted.
  • An ordinary circuit breaker arm is shown around which is wrapped the thin metal strips 2224 in a well known manner. The arm carries a rubbing block of fiber 44.
  • a flat brass Washer 28 is threaded over the terminal and a split steel lock washer 30 may also be used but it is not absolutely necessary.
  • a nut 32 is used to lock the fiat spring 22 and the fiat conducting strip 24 against the flange in the preselected position of the spring 22.
  • a cam 42 engages with the fiber rubbing block 44 so as to separate the movable tungsten point 46 from the stationary tungsten point 48.
  • the insulation 20 is first placed over the bracket 18 as shown.
  • the terminal I0 is then inserted and the washer 36 is placed against the paper fit) Washer 20.
  • the thin annular rim I4 is spun over and the terminal is mounted in place.
  • the spring 22 is adjusted so that the pressure exerted by the tungsten point 46 on the stationary tungsten point 58 is not less than 17 ounces and not more than 20 ounces.
  • the nut 32 is tightened so that the contact pressure is kept at the selected value (17-20 ounces).
  • the electrical terminal is applied between the nut 32 and the nut 413. Hence this terminal can be removed without disturbing the adjustment of the spring 32.
  • the assembled spring 22 and bracket 18 may be factory adjusted so that the unit can be shipped as a spare with a predetermined load on contacts i648.
  • a terminal and spring means for a circuit breaker comprising a slotted spring connected to said circuit breaker, a bracket having an edge and a non-circular opening th rethrough adjacent said edge, a sheet of insulating material folded over said edge and having portions overlying opposite faces of said bracket, said portions having openings aligned with said non-circular opening, the opening in one of said portions being bounded by flaps extending into said non-circular opening, a stud having a non-circular portion extending through said aligned openings and between said fiaps, means on said stud engaging opposed outer faces of said insulating material to clamp said stud to said bracket in insulated relation thereto, said stud extending through said slotted spring, means clamping said spring to said stud and independent means for clamping an electrical conductor to said stud.

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  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)

Description

Filed July 12, 1947 INVENTOR.
Patented Apr. 3, 195i ()FFiCE ELECTRICAL TERIAIN AL Edwin G. Hingelberg, Highland Park, Mich, assignor to George M. Holley and Earl Holley Application July 12, 1947, Serial No. 780,656
1 Claim. 1
The object of this invention is to mount an electrical terminal on an ignition system and to insulate the terminal from the supporting arm.
The specific object of this invention is to make it possible to remove and replace the electrical connection from the terminal without disturbing the adjustment of the spring bending force. The adjustment of this force determines the pressure between the tungsten alloy contact points and also the pressure between the fiber rubbing block and the cam. When this force is too weak the top speed of the engine is limited.
Fig. 1 shows a cross-sectional elevation of the terminal before it is locked in place.
Fig. 2 shows a cross-sectional plan view of the terminal locked in place together with the flat spring strip and the circuit breaker arm and the cam which operates the circuit breaker arm.
Fig. 3 shows the cross-sectional elevation through the paper insulation.
Fig. 4 is an end view of the terminal before being locked in place.
Fig. 5 shows the slot in the end of the steel spring.
In the drawing, it is the terminal, [2 is the square headed end, it is the round annular rim which extends from the squared end. This rim is shown rolled over the washer 36 in Fig. 2.
I5 is a flange at the inner end of the squared portion. I8 is the supporting brackets. 26 is the paper insulation placed between the terminal l0 and its supporting bracket I8.
22 is the flat steel spring strip which is slotted as shown. The thin conducting copper strip 24 is also shown slotted. An ordinary circuit breaker arm is shown around which is wrapped the thin metal strips 2224 in a well known manner. The arm carries a rubbing block of fiber 44.
A flat brass Washer 28 is threaded over the terminal and a split steel lock washer 30 may also be used but it is not absolutely necessary.
A nut 32 is used to lock the fiat spring 22 and the fiat conducting strip 24 against the flange in the preselected position of the spring 22.
Finally the nut 40 is used to lock the electrical connection in place.
A cam 42 engages with the fiber rubbing block 44 so as to separate the movable tungsten point 46 from the stationary tungsten point 48.
Operation The insulation 20 is first placed over the bracket 18 as shown. The terminal I0 is then inserted and the washer 36 is placed against the paper fit) Washer 20. The thin annular rim I4 is spun over and the terminal is mounted in place.
The spring 22 is adjusted so that the pressure exerted by the tungsten point 46 on the stationary tungsten point 58 is not less than 17 ounces and not more than 20 ounces. When this has been adjusted the nut 32 is tightened so that the contact pressure is kept at the selected value (17-20 ounces).
The electrical terminal is applied between the nut 32 and the nut 413. Hence this terminal can be removed without disturbing the adjustment of the spring 32.
The assembled spring 22 and bracket 18 may be factory adjusted so that the unit can be shipped as a spare with a predetermined load on contacts i648.
What I claim is:
A terminal and spring means for a circuit breaker, comprising a slotted spring connected to said circuit breaker, a bracket having an edge and a non-circular opening th rethrough adjacent said edge, a sheet of insulating material folded over said edge and having portions overlying opposite faces of said bracket, said portions having openings aligned with said non-circular opening, the opening in one of said portions being bounded by flaps extending into said non-circular opening, a stud having a non-circular portion extending through said aligned openings and between said fiaps, means on said stud engaging opposed outer faces of said insulating material to clamp said stud to said bracket in insulated relation thereto, said stud extending through said slotted spring, means clamping said spring to said stud and independent means for clamping an electrical conductor to said stud.
EDWIN G. HINGELBERG.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 914,327 Barbour Mar. 2, 1909 996,874 Moak July 4, 1911 1,042,747 Ziegler Oct. 29, 1912 1,646,890 Tuska Oct. 25, 1927 1,766,908 Kindl June 24, 1930 1,801,584 Arthur et a1. Apr. 21, 1931 2,185,193 Hanson Jan. 2, 1940 2,211,412 Filko Aug. 13, 1940
US760656A 1947-07-12 1947-07-12 Electrical terminal Expired - Lifetime US2547866A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US760656A US2547866A (en) 1947-07-12 1947-07-12 Electrical terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US760656A US2547866A (en) 1947-07-12 1947-07-12 Electrical terminal

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US2547866A true US2547866A (en) 1951-04-03

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US760656A Expired - Lifetime US2547866A (en) 1947-07-12 1947-07-12 Electrical terminal

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723302A (en) * 1951-08-20 1955-11-08 Int Standard Electric Corp Mounting plate insulators and assemblies
US2846659A (en) * 1953-10-14 1958-08-05 Nuclear Chicago Corp Soldering terminal assembly
US2929042A (en) * 1955-06-03 1960-03-15 Int Computers & Tabulators Ltd Connection box with slidable plugboard
US2990533A (en) * 1958-04-09 1961-06-27 Stokes D Hughes Terminal post for circuit board
US2992402A (en) * 1958-08-15 1961-07-11 Gen Motors Corp Thermocouple lead attachment
US3119916A (en) * 1959-10-19 1964-01-28 Burgess Products Co Ltd Electric switch for use over substantial ranges of temperature

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US914327A (en) * 1908-05-16 1909-03-02 Standard Underground Cable Company Binding-post.
US996874A (en) * 1908-10-21 1911-07-04 Gen Electric Relay.
US1042747A (en) * 1908-09-14 1912-10-29 United Electric Apparatus Company Binding-post.
US1646890A (en) * 1924-07-21 1927-10-25 C D Tuska Company Binding post
US1766908A (en) * 1926-01-12 1930-06-24 Delco Remy Corp Ignition timer
US1801584A (en) * 1929-08-26 1931-04-21 Delco Remy Corp Ignition device
US2185193A (en) * 1938-11-04 1940-01-02 Malcolm P Hanson Electric terminal connection
US2211412A (en) * 1940-01-02 1940-08-13 Filko John Breaker arm for ignition devices

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US914327A (en) * 1908-05-16 1909-03-02 Standard Underground Cable Company Binding-post.
US1042747A (en) * 1908-09-14 1912-10-29 United Electric Apparatus Company Binding-post.
US996874A (en) * 1908-10-21 1911-07-04 Gen Electric Relay.
US1646890A (en) * 1924-07-21 1927-10-25 C D Tuska Company Binding post
US1766908A (en) * 1926-01-12 1930-06-24 Delco Remy Corp Ignition timer
US1801584A (en) * 1929-08-26 1931-04-21 Delco Remy Corp Ignition device
US2185193A (en) * 1938-11-04 1940-01-02 Malcolm P Hanson Electric terminal connection
US2211412A (en) * 1940-01-02 1940-08-13 Filko John Breaker arm for ignition devices

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723302A (en) * 1951-08-20 1955-11-08 Int Standard Electric Corp Mounting plate insulators and assemblies
US2846659A (en) * 1953-10-14 1958-08-05 Nuclear Chicago Corp Soldering terminal assembly
US2929042A (en) * 1955-06-03 1960-03-15 Int Computers & Tabulators Ltd Connection box with slidable plugboard
US2990533A (en) * 1958-04-09 1961-06-27 Stokes D Hughes Terminal post for circuit board
US2992402A (en) * 1958-08-15 1961-07-11 Gen Motors Corp Thermocouple lead attachment
US3119916A (en) * 1959-10-19 1964-01-28 Burgess Products Co Ltd Electric switch for use over substantial ranges of temperature

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