US2408276A - Electrical ground clamp - Google Patents

Electrical ground clamp Download PDF

Info

Publication number
US2408276A
US2408276A US481367A US48136743A US2408276A US 2408276 A US2408276 A US 2408276A US 481367 A US481367 A US 481367A US 48136743 A US48136743 A US 48136743A US 2408276 A US2408276 A US 2408276A
Authority
US
United States
Prior art keywords
electrical ground
ground clamp
secured
electrical
clamp
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
US481367A
Inventor
Shrader Chalmon John
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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 US481367A priority Critical patent/US2408276A/en
Application granted granted Critical
Publication of US2408276A publication Critical patent/US2408276A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4854—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a wire spring
    • H01R4/4863—Coil spring
    • H01R4/4872—Coil spring axially compressed to retain wire end
    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail

Definitions

  • This invention relates to electrical ground clamp or connections and more particularly to arc Welding connections.
  • One of the objects of this invention is the provision of a clamp adapted to be connected to various sizes of conductors.
  • Another object of this invention is the provision of an adjustable clamp.
  • Fig. 1 is a vertical side View; Fig. 2, a sectional portional side view; Fig. 3, a top plan view, and Fig. 4, an electrical circuit.
  • an angular male member I is disposed in slidable fashion in an angular-female member 2 and is provided with a ball and socket joint l3 to which is connected a contact 4.
  • a contact 5, similar to 4, is connected to a ball and socket joint 6 disposed in one end of a rod 'I slidable through end 8 of the female member 2, and adapted to lbe secured by a lock-nut 9.
  • a contact member l I is secured near one end of member I While a contact I2 is disposed near one end of member 2 as shown in Fig. 1.
  • Contact member II engages slot I3 throughout its length to prevent circumferential displacement with respect to members I and 2.
  • Welding of member II to sleeve I through slot I3 of member 2 may be accomplished by applying one terminal of a source of current to sleeve I through such slot and the other terminal of the source to member II, thereby completing a circuit and effecting the welding of member II to sleeve I, in the manner well known in the resistance welding art.
  • the shank of part II may -be circular and have its end threaded to engage a correspondingly threaded hole in sleeve I.
  • Female member 2 is provided with a toothed end I4 adapted to scrape rust and non-conducting materials from a conducting material; while a swiveled hook I5 having a pair of resilient legs IS-II is adapted for being clamped to the device at any suitable point so that said hook may be secured to an object and thus support the dev1ce.
  • an electrical conductor I8 is connected to male member I and adapted to conduct electrical curin the schematic electrical diagram of Fig. 4, in which current passes through conductor A from generator B, through the angular bar C and de- Y vice and returning to the generator via conductor I8.
  • Magnetic Iblocks 20y are respectively secured to members I-2 and adapted to hold the device in a iixed position against any material that is attracted by said blocks.
  • a tubular meminvention In an electrical connector, a tubular meminvention, what is 'ber having a slot through its side wall longitudia second gripping element mounted upon the end of said rod adjacent said iirst element.
  • eac-h of said gripping elements being universally pivotally mounted upon said one arm and rod.
  • a tubular member having a slot through its side wall longitudinally of said member, a hollow mem-ber telescopically tting said tubular member, a tension spring within said hollow member and having its ends secured to said members, respectively, a first clamp element having a shank extending through said slot and there secured to said hollow member, a second clamp element having a shank secured to said tubular member adjacent its end receiving said hollow member, a parallel arm projecting laterally from the free end of each of said members, a rod mounted on one said arm for adjustment toward and from theV other arm,

Description

Sept. 24, 1946. c. J. sHRADER ELECTRICAL GROUND CLAMP Filed March 51, 1943 C halmdn John VShrader l INVENTOR ATTORNEY Patented Sept. 24, 1946v UNITED STATES PATENT oEFICE Chalmon John Shrader, Henrico County, Va. Application March 31, 1943, Serial No. 481,367
This invention relates to electrical ground clamp or connections and more particularly to arc Welding connections.
One of the objects of this invention is the provision of a clamp adapted to be connected to various sizes of conductors. y
Another object of this invention is the provision of an adjustable clamp.
Other objects and features will more fully appear from the following description and accompanying drawing, in which:
Fig. 1 is a vertical side View; Fig. 2, a sectional portional side view; Fig. 3, a top plan view, and Fig. 4, an electrical circuit.
Referring to the drawing, an angular male member I is disposed in slidable fashion in an angular-female member 2 and is provided with a ball and socket joint l3 to which is connected a contact 4.
A contact 5, similar to 4, is connected to a ball and socket joint 6 disposed in one end of a rod 'I slidable through end 8 of the female member 2, and adapted to lbe secured by a lock-nut 9.
Contacts 4 and 5 are held together by a spring I; the ends o1' which are respectively secured to members I and 2.
A contact member l I is secured near one end of member I While a contact I2 is disposed near one end of member 2 as shown in Fig. 1. Contact member II engages slot I3 throughout its length to prevent circumferential displacement with respect to members I and 2. Welding of member II to sleeve I through slot I3 of member 2, may be accomplished by applying one terminal of a source of current to sleeve I through such slot and the other terminal of the source to member II, thereby completing a circuit and effecting the welding of member II to sleeve I, in the manner well known in the resistance welding art. Furthermore, it is obvious that the shank of part II may -be circular and have its end threaded to engage a correspondingly threaded hole in sleeve I.
Female member 2 is provided with a toothed end I4 adapted to scrape rust and non-conducting materials from a conducting material; while a swiveled hook I5 having a pair of resilient legs IS-II is adapted for being clamped to the device at any suitable point so that said hook may be secured to an object and thus support the dev1ce.
B'Clams. (Cl. 173-273) 4--5 open and may be closed upon said metal thus securing the device to the metal in electri cal circuit.
To secure the device, for instance, inside an angular metal bar C, members I and 2 are pulled against spring tension and contacts II--I2 move toward each other and may be inserted in tube and electrical contact thus made; as illustrated An electrical conductor I8 is connected to male member I and adapted to conduct electrical curin the schematic electrical diagram of Fig. 4, in which current passes through conductor A from generator B, through the angular bar C and de- Y vice and returning to the generator via conductor I8.
Magnetic Iblocks 20y are respectively secured to members I-2 and adapted to hold the device in a iixed position against any material that is attracted by said blocks.
Having described this claimed is:
1. In an electrical connector, a tubular meminvention, what is 'ber having a slot through its side wall longitudia second gripping element mounted upon the end of said rod adjacent said iirst element.
2. In a connector as dei-ined in claim 1, eac-h of said gripping elements being universally pivotally mounted upon said one arm and rod.
3. In an electrfical connector, a tubular member, having a slot through its side wall longitudinally of said member, a hollow mem-ber telescopically tting said tubular member, a tension spring within said hollow member and having its ends secured to said members, respectively, a first clamp element having a shank extending through said slot and there secured to said hollow member, a second clamp element having a shank secured to said tubular member adjacent its end receiving said hollow member, a parallel arm projecting laterally from the free end of each of said members, a rod mounted on one said arm for adjustment toward and from theV other arm,
means carried by said arm and securing said rod
US481367A 1943-03-31 1943-03-31 Electrical ground clamp Expired - Lifetime US2408276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US481367A US2408276A (en) 1943-03-31 1943-03-31 Electrical ground clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481367A US2408276A (en) 1943-03-31 1943-03-31 Electrical ground clamp

Publications (1)

Publication Number Publication Date
US2408276A true US2408276A (en) 1946-09-24

Family

ID=23911677

Family Applications (1)

Application Number Title Priority Date Filing Date
US481367A Expired - Lifetime US2408276A (en) 1943-03-31 1943-03-31 Electrical ground clamp

Country Status (1)

Country Link
US (1) US2408276A (en)

Similar Documents

Publication Publication Date Title
US4057313A (en) Test clip
US2516657A (en) Electric test probe
US2243086A (en) Pliers
US2438350A (en) Test probe
US2918646A (en) Convertible test probe
US3689687A (en) Insulator arm support device
US2408276A (en) Electrical ground clamp
US2682649A (en) Electrical connector
US3374455A (en) Electrical connector
US2969519A (en) Radio electrician's and power transmission safe test device
US2236372A (en) Holder for electric welding electrodes
US1332937A (en) Soldering-iron
US2360016A (en) Electrode holder
US2574043A (en) Insulated extension clip-on test prod
US2472000A (en) Electrical jumper line and clamp therefor
US2222110A (en) Tester
RU186791U1 (en) ELECTRODE CLAMP
US2934738A (en) Electric meter probe
US830675A (en) Attachment for telephone test sets.
US1353028A (en) Electrode-holder
US1550206A (en) Variable-resistance conductor terminal
US2373070A (en) Clip
US3171709A (en) Fine wire clamp
US2437652A (en) Welding rod holder
US2509653A (en) Electrical circuit tester