US2533200A - Partially insulated electrical terminal - Google Patents
Partially insulated electrical terminal Download PDFInfo
- Publication number
- US2533200A US2533200A US616552A US61655245A US2533200A US 2533200 A US2533200 A US 2533200A US 616552 A US616552 A US 616552A US 61655245 A US61655245 A US 61655245A US 2533200 A US2533200 A US 2533200A
- Authority
- US
- United States
- Prior art keywords
- insulation
- terminal
- wire
- connector
- barrel
- 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
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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
- H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/20—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
-
- 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
- Y10T24/3907—Sheathed strand
-
- 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
- Y10T24/398—Bendable, ductible
Definitions
- My invention relates to electric connectors which are mounted adjacent each other.
- terminal strips are usually made of insulating material provided with one or more rows of bolts. In some cases insulating barriers are provided between the bolts; in other cases the strips are flat and without insulating barriers.- In both cases, the terminals which are mounted on the terminal strips usually extend beyond the barriers.
- Such terminals are commonly installed with their barrels parallel and although they may be tightly bolted in place, shock or vibration may cause the terminals to rotate around the bolt as an axis, until the ends of the barrels touch, thereby causing an electrical short circuit.
- Terminals of this character are either indented or soldered onto wire ends and then short lengths of insulating tubing are slipped over the barrels of the terminals to prevent short circuiting
- this process is relatively slow and costly.
- tubing may be a loose fit on the a terminal barrels, and consequently it may slide off after installation, thereby permitting terminals to become uninsulated.
- One object therefore of my invention is to insulate that portion of the terminal which is likely to touch an adjacent terminal.
- Another object of my invention is to provide an insulated shroud on the terminal which will provide an insulated connector overlap on the insulation 0f the wire and at the same time provide an insulation grip on the insulation of the wire.
- Still another object of my invention is to provide a terminal which can be indented or soldered onto a wire end without afiecting or damaging the insulated portion.
- a further object of my invention is to provide a terminal with an insulated shroud that can be compressed onto the insulation of the wire without causing the insulation on the shroud to be broken through
- a still further object is to provide a connector with a form of insulation that may be applied rapidly and in bulk.
- Fig. 1 is a plan View of a terminal strip to which connectors have been mounted employing my invention.
- Fig. 2 is a longitudinally sectioned view taken in the plane 2-2, of Fig. 1.
- Fig. 3 is a perspective view of a connector employing my invention.
- Fig. 4 is a transverse sectional view taken through the plane 4-4 of Fig. 3.
- I have provided the connector I!) with an end portion H into which an exposed wire end I2 is inserted until positioned in the barrel 13 thereof.
- the connector barrel may terminate in a shroud l 4 which is split as at I5, to accommodate the insulated wire 12a.
- the barrel l3 may be indented as at IE to the wire end I2 by standard indenting tools, or if the barrel has an open back H, the wire end can be soldered into the barrel by introducing the solder into the open back.
- Insulation I8 is provided on the end of the barrel adjacent the opening for the insertion of the wire, for the purpose hereinafter explained. Where a shroud is provided, the insulation covers the shroud. That portion of the barrel l3 which is subsequently used for indenting the wire end is not insulated.
- the insulation comprises a tough plastic, rubher, or synthetic rubber film. Since the barrel portion is bare, the insulation can be formed during manufacture, by dipping the connector end in the liquid insulation up to the desired limit on the barrel. Where a shroud is provided, it will be entirely covered in the dipping process extending partially into the opening of the shroud. When the connector has been removed and the insulation has solidified, the opening 19 to the barrel may be covered by a film of insulation material. The opening can be reestablished by rupturing the film or membrane with a tool as is shown in Fig. 3 and Fig. 4.
- the membrane 20 will not form, and just the inner and outer coats of insulation 2
- the connector I0 is illustrated in Fig. 2 as a terminal having lug portion 25 through which a bolt 26 extends from the terminal strip 2'! made of insulating material, and locked thereto by nut 28.
- , illustrated in Fig. 1, indicate how the terminal may rotate upon their respective bolts, if loosened, to permit the ends of the connector bodies to touch and short circuit the connections.
- the insulated shroud overlaps the insulation of the wire, there is no exposed wire to be accidentally touched by an adjacent connection.
- the end insulation coverings may be separately made and bonded to the shrouded end by suitable adhesives, or the insulation may be sprayed on. These methods are, obviously, not as satisfactory, especially in small connectors wherein the dipping process can be carried out quickly, cheaply, and in bulk.
- various materials may be stored within the barrel for various purposes,
- the film 29, which may form in the clipping process, can be utilized to retain the material in the barrel until ready for use.
- An electrical connector comprising a hollow soft metal body suitable for indentation with a free end having an opening for the insertion of the bared end of an insulated conductor, a remaining end of the metal bodyprovided with an attaching means for mounting the metal body to a terminal, said attaching means having an axis of mounting substantially normal to the axis of the metal body, whereby the metal body may be attached in any position about the axis of the attaching means, said metal body being covered only at its free end with insulating material secured thereto, the bared end of the conductor adapted to be indented to the uncovered portion of the metal body.
- An electrical connection comprising a connector having a hollow body made of malleable metal provided with a free end having an opening, an insulated conductor having a bared end inserted therein, a remaining end 01 hollow body having means for attaching the connector to a supported terminal, said metal body being covered only at the free end thereof with insulating material, the bared end of the cc-n ductor being indented to the uncovered portion of the metal body.
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Description
Dec. 5, 1950 J. ROGOFF PARTIALLY INSULATED ELECTRICAL TERMINAL Filed Sept. 15, 1945 INVENTOR Jlz Zia R0 BY {a ATTORNEY 99 iEM/ Patented Dec. 5, 1959 UNITED PARTIALLY INSULATED ELECTRICAL TERMINAL Julian Bogoif, New Rochelle, N. Y., assignor t Burndy Engineering Company, Inc., a corporation of New York Application September 15, 1945, Serial No. 616,552
2 Claims.
My invention relates to electric connectors which are mounted adjacent each other.
It is common practice in electrical wiring to mount wire terminals adjacent to each other on terminal strips. Such terminal strips are usually made of insulating material provided with one or more rows of bolts. In some cases insulating barriers are provided between the bolts; in other cases the strips are flat and without insulating barriers.- In both cases, the terminals which are mounted on the terminal strips usually extend beyond the barriers. Such terminals are commonly installed with their barrels parallel and although they may be tightly bolted in place, shock or vibration may cause the terminals to rotate around the bolt as an axis, until the ends of the barrels touch, thereby causing an electrical short circuit.
Terminals of this character are either indented or soldered onto wire ends and then short lengths of insulating tubing are slipped over the barrels of the terminals to prevent short circuiting In order to get the insulating tubing on to the terminal barrels, it is first necessary to slip the tubing over the wire ends before the latter are installed on the terminals and then, after installation, to push the tubing over the terminal barrels. When large numbers of terminals are installed, this process is relatively slow and costly.
In addition, the tubing may be a loose fit on the a terminal barrels, and consequently it may slide off after installation, thereby permitting terminals to become uninsulated.
One object therefore of my invention is to insulate that portion of the terminal which is likely to touch an adjacent terminal.
Another object of my invention is to provide an insulated shroud on the terminal which will provide an insulated connector overlap on the insulation 0f the wire and at the same time provide an insulation grip on the insulation of the wire.
Still another object of my invention is to provide a terminal which can be indented or soldered onto a wire end without afiecting or damaging the insulated portion.
A further object of my invention is to provide a terminal with an insulated shroud that can be compressed onto the insulation of the wire without causing the insulation on the shroud to be broken through A still further object is to provide a connector with a form of insulation that may be applied rapidly and in bulk.
I accomplish these and other objects and obtain my new results as will be apparent from the device described in the following specification, particularly pointed out in the claims, and illustrated in the accompanying drawing in which:
Fig. 1 is a plan View of a terminal strip to which connectors have been mounted employing my invention.
Fig. 2 is a longitudinally sectioned view taken in the plane 2-2, of Fig. 1.
Fig. 3 is a perspective view of a connector employing my invention.
Fig. 4 is a transverse sectional view taken through the plane 4-4 of Fig. 3.
As is indicated in the drawing, I have provided the connector I!) with an end portion H into which an exposed wire end I2 is inserted until positioned in the barrel 13 thereof.
The connector barrel may terminate in a shroud l 4 which is split as at I5, to accommodate the insulated wire 12a.
The barrel l3 may be indented as at IE to the wire end I2 by standard indenting tools, or if the barrel has an open back H, the wire end can be soldered into the barrel by introducing the solder into the open back.
Insulation I8 is provided on the end of the barrel adjacent the opening for the insertion of the wire, for the purpose hereinafter explained. Where a shroud is provided, the insulation covers the shroud. That portion of the barrel l3 which is subsequently used for indenting the wire end is not insulated.
The insulation comprises a tough plastic, rubher, or synthetic rubber film. Since the barrel portion is bare, the insulation can be formed during manufacture, by dipping the connector end in the liquid insulation up to the desired limit on the barrel. Where a shroud is provided, it will be entirely covered in the dipping process extending partially into the opening of the shroud. When the connector has been removed and the insulation has solidified, the opening 19 to the barrel may be covered by a film of insulation material. The opening can be reestablished by rupturing the film or membrane with a tool as is shown in Fig. 3 and Fig. 4.
If the shroud opening is sufliciently large, the membrane 20 will not form, and just the inner and outer coats of insulation 2| and 22 will adhere on the inner and outer surface of the connector body including the end 2-3.
The connector I0 is illustrated in Fig. 2 as a terminal having lug portion 25 through which a bolt 26 extends from the terminal strip 2'! made of insulating material, and locked thereto by nut 28.
The two adjacent terminals 30 and 3|, illustrated in Fig. 1, indicate how the terminal may rotate upon their respective bolts, if loosened, to permit the ends of the connector bodies to touch and short circuit the connections. By providing the ends of the terminals with insulation, as aforesaid, such short circuits can be avoided. Moreover, since the insulated shroud overlaps the insulation of the wire, there is no exposed wire to be accidentally touched by an adjacent connection.
The end insulation coverings may be separately made and bonded to the shrouded end by suitable adhesives, or the insulation may be sprayed on. These methods are, obviously, not as satisfactory, especially in small connectors wherein the dipping process can be carried out quickly, cheaply, and in bulk.
In some connectors, various materials may be stored within the barrel for various purposes,
such as utilizing zinc-petrolatum, to establish a better connection where stranded aluminum wire is used. In such case, the film 29, which may form in the clipping process, can be utilized to retain the material in the barrel until ready for use.
Thus by the simple expedient of covering the ends of connectors with insulation, leaving the metal barrels exposed for indenting or soldering purposes, I am able to provide a connection which has the advantages of a completely prepared insulated connector with uninsulated portions where not required, thus reducing the cost, and insuring a safe and reliable connec tion with no danger of a short circuit.
I have thus described my invention, but I desire it understood that it is not confined to the particular forms or uses shown and described, the same being merely illustrative, and that the invention may be carried out in other ways without departing from the spirit of my invention, and, therefore, I claim broadly the right to employ all equivalent instrumentalities coming within the scope of the appended claims, and by means of which, objects of my invention are at tained and new results accomplished, as it is obvious that the particular embodiments herein shown and described are only some of the many that can be employed to attain these objects and accomplish these results.
I claim:
1. An electrical connector comprising a hollow soft metal body suitable for indentation with a free end having an opening for the insertion of the bared end of an insulated conductor, a remaining end of the metal bodyprovided with an attaching means for mounting the metal body to a terminal, said attaching means having an axis of mounting substantially normal to the axis of the metal body, whereby the metal body may be attached in any position about the axis of the attaching means, said metal body being covered only at its free end with insulating material secured thereto, the bared end of the conductor adapted to be indented to the uncovered portion of the metal body.
2. An electrical connection comprising a connector having a hollow body made of malleable metal provided with a free end having an opening, an insulated conductor having a bared end inserted therein, a remaining end 01 hollow body having means for attaching the connector to a supported terminal, said metal body being covered only at the free end thereof with insulating material, the bared end of the cc-n ductor being indented to the uncovered portion of the metal body.
JULIAN ROGOFF.
REFERENCES GITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 566,507 Erickson Aug. 25, 1896 1,462,608 Marshall July 24, 1923 1,467,047 Larkin 1- Sept. 4, 1923 1,829,512 Frederickson Oct. 27, 1931 1,886,176 Gagnon Nov. 1, 1932 1,989,718 Taylor Feb. 5, 1935 2,275,163 Thomas Mar. 3, 1942 2,288,918 Parker July 7, 19-1-2 2,297,336 White Sept. 29, 1942 2,371,469 Rogofi Mar. 13, 1945 2,379,567 Buchanan July 3, 1945
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US616552A US2533200A (en) | 1945-09-15 | 1945-09-15 | Partially insulated electrical terminal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US616552A US2533200A (en) | 1945-09-15 | 1945-09-15 | Partially insulated electrical terminal |
Publications (1)
Publication Number | Publication Date |
---|---|
US2533200A true US2533200A (en) | 1950-12-05 |
Family
ID=24469968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US616552A Expired - Lifetime US2533200A (en) | 1945-09-15 | 1945-09-15 | Partially insulated electrical terminal |
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US (1) | US2533200A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2681439A (en) * | 1949-06-20 | 1954-06-15 | Aircraft Marine Prod Inc | Insulated electrical connector |
US2704833A (en) * | 1950-05-06 | 1955-03-22 | Watts Electric & Mfg Co | Coaated socket and mounting thereof |
US2729695A (en) * | 1951-04-27 | 1956-01-03 | Aircraft Marine Prod Inc | Electrical connectors |
US2751570A (en) * | 1950-10-26 | 1956-06-19 | Aircraft Marine Prod Inc | Electrical connector |
DE1079712B (en) * | 1951-11-19 | 1960-04-14 | Amp Inc | Electrical cable lug |
US2951228A (en) * | 1956-04-11 | 1960-08-30 | Amp Inc | Electrical connector |
US3156516A (en) * | 1962-07-23 | 1964-11-10 | Anderson Electric Corp | Electrical connector |
US3381257A (en) * | 1966-05-18 | 1968-04-30 | Chrysler Corp | Antirotation device |
US3383642A (en) * | 1965-09-02 | 1968-05-14 | Pyle National Co | Wire splice |
US3444505A (en) * | 1967-01-17 | 1969-05-13 | Fargo Mfg Co Inc | Connector assembly |
US3450828A (en) * | 1965-10-20 | 1969-06-17 | Telemecanique Electrique | Terminal piece for the connection of electrical cables |
US3955044A (en) * | 1970-12-03 | 1976-05-04 | Amp Incorporated | Corrosion proof terminal for aluminum wire |
DE29806778U1 (en) * | 1998-04-15 | 1999-09-02 | Grote & Hartmann Gmbh & Co Kg, 42369 Wuppertal | Screw connection |
EP2675019A1 (en) * | 2012-06-11 | 2013-12-18 | Sumitomo Wiring Systems, Ltd. | Ground terminal assembly structure and corresponding method |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US566507A (en) * | 1896-08-25 | Conduit-outlet insulator | ||
US1462608A (en) * | 1921-05-06 | 1923-07-24 | Marshall Norman | Method of and apparatus for enameling tubes |
US1467047A (en) * | 1920-11-04 | 1923-09-04 | Nat Carbon Co Inc | Process of coating battery electrodes |
US1829512A (en) * | 1930-08-02 | 1931-10-27 | Nat Electric Prod Corp | Bushing for armored cable |
US1886176A (en) * | 1927-06-28 | 1932-11-01 | Bead Chain Mfg Co | Method of and apparatus for molding pins in radio tube bases |
US1989718A (en) * | 1930-11-13 | 1935-02-05 | Mayme C Taylor | Battery cable |
US2275163A (en) * | 1940-08-29 | 1942-03-03 | Thomas & Betts Corp | Electrical wire connector |
US2288918A (en) * | 1941-03-24 | 1942-07-07 | Gen Motors Corp | Wiring connector socket |
US2297336A (en) * | 1940-05-15 | 1942-09-29 | Jesse M White | Electrical connector |
US2371469A (en) * | 1942-05-27 | 1945-03-13 | Burndy Engineering Co Inc | Tool installed cable terminal and method of making same |
US2379567A (en) * | 1941-12-03 | 1945-07-03 | Aircraft Marine Prod Inc | Electrical connector |
-
1945
- 1945-09-15 US US616552A patent/US2533200A/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US566507A (en) * | 1896-08-25 | Conduit-outlet insulator | ||
US1467047A (en) * | 1920-11-04 | 1923-09-04 | Nat Carbon Co Inc | Process of coating battery electrodes |
US1462608A (en) * | 1921-05-06 | 1923-07-24 | Marshall Norman | Method of and apparatus for enameling tubes |
US1886176A (en) * | 1927-06-28 | 1932-11-01 | Bead Chain Mfg Co | Method of and apparatus for molding pins in radio tube bases |
US1829512A (en) * | 1930-08-02 | 1931-10-27 | Nat Electric Prod Corp | Bushing for armored cable |
US1989718A (en) * | 1930-11-13 | 1935-02-05 | Mayme C Taylor | Battery cable |
US2297336A (en) * | 1940-05-15 | 1942-09-29 | Jesse M White | Electrical connector |
US2275163A (en) * | 1940-08-29 | 1942-03-03 | Thomas & Betts Corp | Electrical wire connector |
US2288918A (en) * | 1941-03-24 | 1942-07-07 | Gen Motors Corp | Wiring connector socket |
US2379567A (en) * | 1941-12-03 | 1945-07-03 | Aircraft Marine Prod Inc | Electrical connector |
US2371469A (en) * | 1942-05-27 | 1945-03-13 | Burndy Engineering Co Inc | Tool installed cable terminal and method of making same |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2681439A (en) * | 1949-06-20 | 1954-06-15 | Aircraft Marine Prod Inc | Insulated electrical connector |
US2704833A (en) * | 1950-05-06 | 1955-03-22 | Watts Electric & Mfg Co | Coaated socket and mounting thereof |
US2751570A (en) * | 1950-10-26 | 1956-06-19 | Aircraft Marine Prod Inc | Electrical connector |
US2729695A (en) * | 1951-04-27 | 1956-01-03 | Aircraft Marine Prod Inc | Electrical connectors |
DE1079712B (en) * | 1951-11-19 | 1960-04-14 | Amp Inc | Electrical cable lug |
US2951228A (en) * | 1956-04-11 | 1960-08-30 | Amp Inc | Electrical connector |
US3156516A (en) * | 1962-07-23 | 1964-11-10 | Anderson Electric Corp | Electrical connector |
US3383642A (en) * | 1965-09-02 | 1968-05-14 | Pyle National Co | Wire splice |
US3450828A (en) * | 1965-10-20 | 1969-06-17 | Telemecanique Electrique | Terminal piece for the connection of electrical cables |
DE1590749B1 (en) * | 1965-10-20 | 1970-07-30 | Telemecanique Electrique | Cable end sleeve |
US3381257A (en) * | 1966-05-18 | 1968-04-30 | Chrysler Corp | Antirotation device |
US3444505A (en) * | 1967-01-17 | 1969-05-13 | Fargo Mfg Co Inc | Connector assembly |
US3955044A (en) * | 1970-12-03 | 1976-05-04 | Amp Incorporated | Corrosion proof terminal for aluminum wire |
DE29806778U1 (en) * | 1998-04-15 | 1999-09-02 | Grote & Hartmann Gmbh & Co Kg, 42369 Wuppertal | Screw connection |
EP2675019A1 (en) * | 2012-06-11 | 2013-12-18 | Sumitomo Wiring Systems, Ltd. | Ground terminal assembly structure and corresponding method |
US9039435B2 (en) | 2012-06-11 | 2015-05-26 | Sumitomo Wiring Systems, Ltd. | Ground terminal assembly structure |
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