US1830084A - Terminal for resistors - Google Patents

Terminal for resistors Download PDF

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Publication number
US1830084A
US1830084A US40295629A US1830084A US 1830084 A US1830084 A US 1830084A US 40295629 A US40295629 A US 40295629A US 1830084 A US1830084 A US 1830084A
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Grant
Patent type
Prior art keywords
wire
strip
terminal
resistors
resistor
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Expired - Lifetime
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Inventor
Bjorndal Magnus
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Hardwick Hindle Inc
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact and means for effecting or maintaining such contact
    • H01R4/28Clamped connections, spring connections
    • H01R4/50Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C1/00Details
    • H01C1/14Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/148Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals embracing or surrounding the resistive element
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact and means for effecting or maintaining such contact
    • H01R4/10Electrically-conductive connections between two or more conductive members in direct contact and means for effecting or maintaining such contact effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/16Electrically-conductive connections between two or more conductive members in direct contact and means for effecting or maintaining such contact effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by bending
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49082Resistor making
    • Y10T29/49087Resistor making with envelope or housing
    • Y10T29/49098Applying terminal

Description

Nov. 3, l93L M, BJORNDAL 1,830,084

I TERMINAL FOR RESISTORS Filed Oct. 28, 1929 l N v EN TQ R MA GA/us BJoeNDA/z.

ATT EY Patented Nov. `3,-1931 UNITED 'STATES PATENT OFFICE MAGNUS BJORNDAL, or JERSEY CITY,- NEW JERSEY, AssIGNoR 'ro HARDWICK, HINDLE,

Inc., or NEWARK, NEW JERSEY, a CORPORATION or NEW JERSEY 'DIERENAL FOR RESISTORS This invention relates to contacts or terminals for resistance units of the type consisting of a tubular member upon which is wound a wire of suitable resistance embedded @in vitreous enamel or other suitable insulating material.

Inthe manufacture of such resistors the method of making contact between the ends of the wire'and the terminals by which it is connected in circuit is of the utmost importance in order that the resistance at the points of attachment of the wire may be reduced to a minimum and all danger of the enamel iiowing between the wire and the terminal during j the coating process be eliminated.

Y Methods of attaching the wire that require the latter to be bent sharply about any parts of thel terminal are objectionable on account of the relatively small area of contact which means relatively high" resistance at these points with consequent generation of heat when current lflows through the resistor. This heat in addition to that generated in the wire by the currentmay be enough to slowly oxidize and. corrode the contact to a point where an open circuit will occur. More especially is this likely to happen in the case of resistors designed to carryvcurrents of rela-. tively large magnitude. yIt is an object of this invention to provide aterminal particularlyA adapted for use i11- resistorsdesigned to carry relatively heavy currents, or heavy duty resistors as they are usually called, and which may bel easily and 36 cheaply lmanufactured and assembled with the other `parts of the resistor.

Inaccordance with the invention the terminal consists o f -a conducting strip adapted to be bent aroundl the tubular member of the resistor and fastenedin place thereon by a.l staple or other suitable device. The end of the wireis'wound yabout the extended .con-V The particular nature of the invention as well as other objects and advantages thereof will appear most clearly from a description of a preferred embodiment as shown in the accompanying drawings in which Fig. 1 is a slde view of a reslstor showing one of the terminals in completed form and the other one with the lug detached from the strip, as it is preparatory to being applied thereto,

Fig. 2 is an end view of the resistor showing the appearance of the strip before the lug is applied,

. Fig. 3 is a view of the strip as initially formed,

Fig. 4 is a sectional view through the terminal taken along the line 4-4 o Fig. 1,

Fig. -5 is a similar'view taken along the line 5-5 of Fig. 1, and

Fig. 6 is a view of the lug as initially formed.

The resistor consists of a tubular member l of suitable insulating material upon which is wound a wire 2 of suitable resistance and. y

current carrying capacity. The terminal consists of a strip 3 of conducting material, sueh as copper, provided with a tab J4 adapted when the strip is bent around the end of the member 1 to fit within a recess 5 inthe end of the member to prevent the strip from turning thereon. The strip is clamped about the tubular member by a staple 6 bent about the extended ends of the strip to hold them in contact as shown mostclearl in Fig. 4l

As shown most clearly at tlie right-hand end of Fig. 1 and in Fig. `2 an end of the -wire 2'is wound several times about .theextended ends of the strip above the staple 6. A lug -7 is initially formed with a U-shaped base 8 and a ring portion 9 as shown in Fig. 6. As shown in dotted llines in this figure and in cross section in Fig. 5 the .prongs of the base' are bent around the wire on the extended ends of the strip and pressed tightly against the wire tc provide good electrical contact f between-these arts. To further. secure the lug firmly in p ace it may be indented as indicated at 10. It may also be welded or otherwise attached to the wire vto form a good 'electrical contact.. Y. f

i The final operation in the manufacture of the resistor is the coating of the tubular member 1, the wire 2, the bent portions of the strips 3 and the bases 8 of the lugs by suitable 'material, such. as vitreous enamel, leaving the ringsl9 of the lugs exposed for attachment to suitablefastening devices ofthe apparatus in which the resistor is to be used and for the purpose of permitting external wires t'o be p '1 soldered: or otherwise connectedv theretoz -While a preferredV embodiment ofA the in-V vention has been shown and described herein, it will be understood that variouschanges in the details of construction may be made without departing fromv the` principle of the invention as dened in the appended' claims.

I claim: A 1'. A terminal for a resistor of the type having 'a' member u onwhich a'wire is wound, 2 consistingof a1 strip of conducting material n bent aroundV the member, means for .holding the st'rip in place on the member with a portion projecting therefrom to lprovide an extension about which an end of the wire is wound, and a lug having a base fitting tightly about the wire on the extension and a portion for 'connection to an external circuit.

2. A terminal'for a resistor of the type having afmember upon which a wire is wou-nd consisting of a strip of conducting material bent around the member, means for holding the-strip in place on the member with a portion projecting therefrom to provide an extension about which'a'n end of the wire is wound, anda lug having a base formed of prongs which it tightly around the wire 'on the extension and a portion for connection to an external circuit. Y v

In testimony whereof I aix my signature.

MAGNUS BJORNDAL

US1830084A 1929-10-28 1929-10-28 Terminal for resistors Expired - Lifetime US1830084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1830084A US1830084A (en) 1929-10-28 1929-10-28 Terminal for resistors

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US1830084A US1830084A (en) 1929-10-28 1929-10-28 Terminal for resistors

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US1830084A true US1830084A (en) 1931-11-03

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495513A (en) * 1945-02-15 1950-01-24 Charles C Doyle Electric (infrared) heating appliance
US2530811A (en) * 1945-06-15 1950-11-21 Acme Staple Company Staple having a closed loop and method of making the same
US2596325A (en) * 1947-09-20 1952-05-13 Joseph J Cerny Method of making electrical resistors
US2627567A (en) * 1947-09-27 1953-02-03 King Seeley Corp Switch
US2659871A (en) * 1949-10-03 1953-11-17 Aircraft Marine Prod Inc Electrical connector strip having laterally displaced strip feeding edges
US2666120A (en) * 1945-03-05 1954-01-12 David T Siegel Welding method and article produced thereby
US2675453A (en) * 1950-02-02 1954-04-13 David T Siegel Apparatus for manufacture of welded terminal resistors
US2718576A (en) * 1951-02-07 1955-09-20 Leeds & Northrup Co Precision impedances
US2747171A (en) * 1952-05-06 1956-05-22 Crimpweld Corp Means for connecting a member to an electrical wire
US2759166A (en) * 1952-06-20 1956-08-14 Bell Telephone Labor Inc Wrapped electrical connection
US2816275A (en) * 1953-12-29 1957-12-10 Amp Inc Electrical connector
US2817068A (en) * 1956-09-13 1957-12-17 Thermal Mfg Company Clip
US3229238A (en) * 1950-02-02 1966-01-11 Cons Electronics Ind Welded terminal resistor
US20120212951A1 (en) * 2011-02-21 2012-08-23 Lextar Electronics Corporation Lamp tube structure and assembly thereof

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495513A (en) * 1945-02-15 1950-01-24 Charles C Doyle Electric (infrared) heating appliance
US2666120A (en) * 1945-03-05 1954-01-12 David T Siegel Welding method and article produced thereby
US2530811A (en) * 1945-06-15 1950-11-21 Acme Staple Company Staple having a closed loop and method of making the same
US2596325A (en) * 1947-09-20 1952-05-13 Joseph J Cerny Method of making electrical resistors
US2627567A (en) * 1947-09-27 1953-02-03 King Seeley Corp Switch
US2659871A (en) * 1949-10-03 1953-11-17 Aircraft Marine Prod Inc Electrical connector strip having laterally displaced strip feeding edges
US3229238A (en) * 1950-02-02 1966-01-11 Cons Electronics Ind Welded terminal resistor
US2675453A (en) * 1950-02-02 1954-04-13 David T Siegel Apparatus for manufacture of welded terminal resistors
US2718576A (en) * 1951-02-07 1955-09-20 Leeds & Northrup Co Precision impedances
US2747171A (en) * 1952-05-06 1956-05-22 Crimpweld Corp Means for connecting a member to an electrical wire
US2759166A (en) * 1952-06-20 1956-08-14 Bell Telephone Labor Inc Wrapped electrical connection
US2816275A (en) * 1953-12-29 1957-12-10 Amp Inc Electrical connector
US2817068A (en) * 1956-09-13 1957-12-17 Thermal Mfg Company Clip
US20120212951A1 (en) * 2011-02-21 2012-08-23 Lextar Electronics Corporation Lamp tube structure and assembly thereof
US8827486B2 (en) * 2011-02-21 2014-09-09 Lextar Electronics Corporation Lamp tube structure and assembly thereof

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