US2380936A - Electrical terminal - Google Patents
Electrical terminal Download PDFInfo
- Publication number
- US2380936A US2380936A US442697A US44269742A US2380936A US 2380936 A US2380936 A US 2380936A US 442697 A US442697 A US 442697A US 44269742 A US44269742 A US 44269742A US 2380936 A US2380936 A US 2380936A
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- US
- United States
- Prior art keywords
- conductor
- electrical
- terminal
- duct
- connector
- 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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- 239000004020 conductor Substances 0.000 description 56
- 238000009413 insulation Methods 0.000 description 12
- 230000000149 penetrating effect Effects 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
Definitions
- This invention relates to improvements in electrical connectors and particularly to that type in which the insulated conductor is fastened by simple and eiIective means and without the use of tools to a terminal of a circuit. More particularly this application is a continuation in part of my companion application, namelyd August 2, i940, bearing Serial Number 349,715, which matured into Letters Patent No. 2,283,177, May 19, 1942, said application in turn being a continuation in part of my original application which ma tured into Patent Number 2,244,937, June 10, 1941.
- the novel means disclosed and which is contained in the present application relates to connecting an electricalcircuit by an improved type of plug and by an improved typel of connection without necessarily stripping the insulation from the conductors, y
- the primary object of the present invention is to provide a terminal connector for use particularly but not exclusively with a flexible insulated conductor, to effectively connect the 4same to a terminal piece without stripping or removing the insulation from the conductor and without the use of tools.
- Another object is to provide a plug of the general character disclosed in my companion application Serial Number 349,715, above identiiied which matured into Letters Patent No. 2,283,177, May 19, 1942, with features by which various utility objects can be attached to, suspended .from and supported by or upon a wall or other support convenient for utility purposes. Further objects will be apparent from the following description.
- Fig. l is a side elevation in perspective of a terminal plug to which my invention may be applied;
- Fig. 2 is a plan looking at the inner face of the terminal plug shown in Fig. 1;
- Fig. 3 is an enlarged back perspective view ot the structure shown in Fig. 1, with the cover platel removed and showing the conductor cord entering the plug;
- Fig. 4 is a section taken on the line 4-4 of Fig. 3;
- Fig. 5 i's a perspective view of the cover plate employed in the body of the plug;
- tFlg. 6 is an end view of the cover plate shown in Fig. Fig.
- FIG. 7 is a section of a detail showing the skeleton structure involved in my improvement
- Fig. 8 is a side elevation partly broken away and in section illustrating the improved terminal plug shown in Figs. 1 to 7 inclusive when used for supporting a lamp fixture
- Fig. 9 is a side elevation partly in section illustrating the improved n terminal plug provided with a folding hook for iml supporting an object when the hookis turned into unfolded position as shown
- Fig. 10 is a side elevation showing a clock,.thermostat.orother service fixture mounted upon the improved terminal plug and supported thereby
- Fig. ll is a side perspective view of the terminal plug without any of the iixtures shown in Figs. 8 to 11 inclusive applied thereto.
- A indicates an insulated body .which may be part of any type of electrical connector desired into which the double electrical conductor cord B is inserted through the passage C into the chamber Ill.
- insulated conductors Il and I2 ofthe cord are divided or split and the end, such as I3, of each conductor while remaining insulated is looped rearwardly through a reverse or circuitous passageway such as I4.
- 'lhereverse passageway as shown is in the form of an arc penetrating the,
- D indicates a rigid termin'al for connection with a socket of any type or companion' connecting element.
- 'I'he rigid terminal as shown consists of a blade v having a contact screw E which is threaded into a passage II which intersects the loop passage Il longitudinally so that the thread c! the screw, when the latter is screwed into the body will cut through the insulation of the conductor and make' electrical contact connection for a considerable distance longitudinally along the conductor.' In this manner acomparatively large surface area is contacted which assures a good and lasting electrical connection and a strong and substantial fastening or gripping means.
- the body A is shown provided with a cover plate F inserted in and closing the chamber Il and provided with spring arms such as4 i1 which enter appropriate slots such as, Il. .Each of these arms is placed so that the screw E will penetrate and pinion an arm and assist in holding the cover F closed while simultaneously. makingv contact with the terminal conductor branch such as il.
- the arms I1 are slightly inclined inwardly as and Il respectively on the cover and body cooperate in biting the main conductor cord and retaining the cord tightly attached to the body to relieve strain on the loops Il. It is to be understood that in connecting the two conductors contained in the cord to a plug such as shown in Figs. 1 to 6 inclusive, a pair of circuit contact terminal blades D is employed, one terminal blade being provided for each conductor and that a companion pair of loops and cooperating reverse loop passages are provided.
- the plug terminal shown is of the type disclosed in my companion application which ma tured into Letters Patent No. 2,283,177, May 19, 1942, of which the present application is a continuation in part and has a wedge shaped body G deiind by a substantially ilat base or face plate 25, a pair of converging opposite sides 2B and 21 extending from the base, and a pair of parallel opposite ends 28 adjacent tosaid base and sides.
- Extending normally from one of the sides 28,. that-is obliquely from the plug is a pair of electrical contact blades D, and extending from the opposite side 21 in the plane of the base or face oi' the body is a lip 20, the outer face of which is an extension of the face of the body.
- This lip is used to engage a spring catch 30 (see Fig. 8) for removably securing the body in a suitable re-
- the principles and structure are susceptible of various modifications involving the anchoring of the conductor irrespective of direction by a reverse loop and of engaging the loop by the side. or other portion of a contact terminal screw or other form of connection.
- the principles involved also include clamping the cord on the body to relieve strain on the loop or loops of the conductors.
- the invention also includes any desired means for simultaneously making electrical contact without the use of tools, and by the same means pinioning parts of the structure to combine and hold an assemblage of elements together.
- electrical contact member D acts as an assembly holder as well as anchoring the electrical conductor in the body and making electrical con- 45 tact' therewith.
- the utility article represented by the thermostat or clock I. shown in Fig. l0 or any other article desired can be mounted on the connector body 'so as to be supported on the wall of a building structure.
- Fig. 9 I have shown my improved connector body A constructed with a folding supporting hook 8l, hinged at 3l, and recessed when folded into the base of thebody. 'I'he weight of any object hung on the hook Il in a similar manner as described above' tends to hold the body seated in its wall receptacle G.
- An electrical connector having a body. said body having a circuitous duct therein adapted to receive and hold an insulated electrical conductor, and a connector element having a screw threaded 4shank inserted in said body longitu dinally of and entering the side of said passage o with its thread convolutions perforating the intact and assembly holder may be screw driven or modified and driven, clamped Ior otherwise constructed for making contact with and holding the conductor as well-as mechanically locking any of the parts of the assemblytogether. Also the mode of contacting the electrical conductor such as Il by the electric contact member D may be from any direction; in any manner and by any suit'- able'means, within the spirit of the invention.
- the assemblage of parts constituting'lmy improvement. is light in weight and the body is easily 'removed from a cooperating receptacle.
- Figs. 8 to 1l inclusive I have shown a modisulation of said conductor and contacting said conductor to make electrical connection therewith and retain the conductor in said passage.
- An electrical connector having a body, said body having a longitudinal duct therein adapted to receive and hold an insulated conductor, a connector element having a pointed screw shank inserted point first through said body and entering the side of said duct with its thread convolutions penetrating the insulation of said conductnr and contacting said conductor to make electrical connection therewith and retain said conductor in said duct, and means for clamping the conductor on said body toprevent pulling strain upon the contact between the shank and the conductor.
- a n electrical connector having a body, said body having a chamber in its side, a circuitous duct connected with the iioor oi' said chamber and an inlet i'or admitting an electrical conductor into said chamber and duct, a connector element on said body having a screw threaded shank lnsertedin said body longitudinally of and entering the side of said duct with its thread convolutions engaging said conductor, a cover for said chamber having a fastening element inserted in said body and penetrated by said shank to hold the 4cover closed over said chamber. said cover having means for-engaging the body of said conductor to relieve pulling strain upon the contact between the shank and the conductor.
- An electrical connector having a body, a connecting terminal mounted upon said body. said body having an inletfor admitting an intlcation' of my improved electrical connector for 15 lulated electrical conductor and a duct through which said conductor is threaded, and a screw element projecting inwardly from said connecting terminal and threaded longitudinally along one side of said duct with its thread penetrating the insulation and engaging the conductor there- 1n.
- An electrical connector comprising, a body having a duct therein for admitting and holding an insulated conductor, and a threaded electrical terminal seated in said body with only its thread perforating the insulation along the side of said conductor in said duct and making electrical contact with the conductor through its insulation.
- An electrical connector comprising, a body having a longitudinal duct therein adapted to receive and hold an insulated conductor,-and a terminal element having a screw shank inserted through said body and entering the side of said duct longitudinally thereof with its thread penetrating the insulation of said conductor and contacting said conductor within the insulation to make electrical connection therewith and retain the conductor in said duct.
- An electrical connector comprising, a body having a longitudinal duct therein adapted to receive and hold an insulated conductor, a. terminal having a screw shank inserted through said body and entering the side of said duct longitudinally thereof with its thread penetrating the insulation of said conductor and contacting said conductor to make electrical connection therewith and retain the conductor in said duct, and means for clamping the conductor on said body to prevent pulling strain upon the contact between the shank and the conductor.
- An electrical connector comprising, a body having a chamber therein, a duct in said body connected -with said chamber, an inlet for admitting an insulated electrical conductor into said chamber and duct, a connector on said body having a screw threaded shank inserted in said body along one side of said duct with its thread convolutions .engaging said conductor, and a cover for said chamber having fastening means inserted in said body and penetrated by said shank to hold the cover closed over said chamber, said cover having means for engaging the body of said conductor to relieve pulling strain upon the contact between the shank and the conductor.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Description
Aug. 7, 1945.
K. A. BRAINARD 2,380,936
ELECTRICAL TERMINAL Filed May l2, 1942 2 Sheets-Sheet l INVENTGR.
BY @im e az'nard ,Aug 7, 1945. K. A. BRAxNARD 2,380,936
ELECTRICAL TERMINAL Filed May 12, 1942 2 Sheets-Sheet 2 INVENTOR.
Patented Aug. 7, 1945 UNITED STATES PATENT oEFvl'cE Appneeuon May 12, Sge geen 8 Claims.
This invention relates to improvements in electrical connectors and particularly to that type in which the insulated conductor is fastened by simple and eiIective means and without the use of tools to a terminal of a circuit. More particularly this application is a continuation in part of my companion application, iiled August 2, i940, bearing Serial Number 349,715, which matured into Letters Patent No. 2,283,177, May 19, 1942, said application in turn being a continuation in part of my original application which ma tured into Patent Number 2,244,937, June 10, 1941. In the patent and application above referred to a portion of the novel means disclosed and which is contained in the present application relates to connecting an electricalcircuit by an improved type of plug and by an improved typel of connection without necessarily stripping the insulation from the conductors, y
The primary object of the present invention is to provide a terminal connector for use particularly but not exclusively with a flexible insulated conductor, to effectively connect the 4same to a terminal piece without stripping or removing the insulation from the conductor and without the use of tools. Another object is to provide a plug of the general character disclosed in my companion application Serial Number 349,715, above identiiied which matured into Letters Patent No. 2,283,177, May 19, 1942, with features by which various utility objects can be attached to, suspended .from and supported by or upon a wall or other support convenient for utility purposes. Further objects will be apparent from the following description.
Inthe accompanying drawings, forming'part of this speciflcatiomFig. l is a side elevation in perspective of a terminal plug to which my invention may be applied; Fig. 2 is a plan looking at the inner face of the terminal plug shown in Fig. 1; Fig. 3 is an enlarged back perspective view ot the structure shown in Fig. 1, with the cover platel removed and showing the conductor cord entering the plug; Fig. 4 is a section taken on the line 4-4 of Fig. 3; Fig. 5 i's a perspective view of the cover plate employed in the body of the plug; tFlg. 6 is an end view of the cover plate shown in Fig. Fig. 7 is a section of a detail showing the skeleton structure involved in my improvement; Fig. 8 is a side elevation partly broken away and in section illustrating the improved terminal plug shown in Figs. 1 to 7 inclusive when used for supporting a lamp fixture; Fig. 9 is a side elevation partly in section illustrating the improved n terminal plug provided with a folding hook for iml supporting an object when the hookis turned into unfolded position as shown; Fig. 10 is a side elevation showing a clock,.thermostat.orother service fixture mounted upon the improved terminal plug and supported thereby, and Fig. ll is a side perspective view of the terminal plug without any of the iixtures shown in Figs. 8 to 11 inclusive applied thereto. y
Referring particularly to Fig.l 7, A indicates an insulated body .which may be part of any type of electrical connector desired into which the double electrical conductor cord B is inserted through the passage C into the chamber Ill. 'Ihe insulated conductors Il and I2 ofthe cord are divided or split and the end, such as I3, of each conductor while remaining insulated is looped rearwardly through a reverse or circuitous passageway such as I4. 'lhereverse passageway as shown is in the form of an arc penetrating the,
noor of the chamber lo? at both ends and receivf ing the reverse loop il of the conductor. D indicates a rigid termin'al for connection with a socket of any type or companion' connecting element. 'I'he rigid terminal as shown consists of a blade v having a contact screw E which is threaded into a passage II which intersects the loop passage Il longitudinally so that the thread c! the screw, when the latter is screwed into the body will cut through the insulation of the conductor and make' electrical contact connection for a considerable distance longitudinally along the conductor.' In this manner acomparatively large surface area is contacted which assures a good and lasting electrical connection and a strong and substantial fastening or gripping means. TheA convolutions of vthe thread of the screw bite through the insulation. and impinge the conductor tightly engaged with the -body of the lconnector to prevent removal. The inner end of the screw is pointed at il to pierce the insulation of the conductor. loop as the screw is applied so that convolutions of the thread following will mairev .l
a clean positive electrical contact.
The body A is shown provided with a cover plate F inserted in and closing the chamber Il and provided with spring arms such as4 i1 which enter appropriate slots such as, Il. .Each of these arms is placed so that the screw E will penetrate and pinion an arm and assist in holding the cover F closed while simultaneously. makingv contact with the terminal conductor branch such as il.
The arms I1 are slightly inclined inwardly as and Il respectively on the cover and body cooperate in biting the main conductor cord and retaining the cord tightly attached to the body to relieve strain on the loops Il. It is to be understood that in connecting the two conductors contained in the cord to a plug such as shown in Figs. 1 to 6 inclusive, a pair of circuit contact terminal blades D is employed, one terminal blade being provided for each conductor and that a companion pair of loops and cooperating reverse loop passages are provided.
The plug terminal shown is of the type disclosed in my companion application which ma tured into Letters Patent No. 2,283,177, May 19, 1942, of which the present application is a continuation in part and has a wedge shaped body G deiind by a substantially ilat base or face plate 25, a pair of converging opposite sides 2B and 21 extending from the base, and a pair of parallel opposite ends 28 adjacent tosaid base and sides. Extending normally from one of the sides 28,. that-is obliquely from the plug is a pair of electrical contact blades D, and extending from the opposite side 21 in the plane of the base or face oi' the body is a lip 20, the outer face of which is an extension of the face of the body. This lip is used to engage a spring catch 30 (see Fig. 8) for removably securing the body in a suitable re- The principles and structure are susceptible of various modifications involving the anchoring of the conductor irrespective of direction by a reverse loop and of engaging the loop by the side. or other portion of a contact terminal screw or other form of connection. The principles involved also include clamping the cord on the body to relieve strain on the loop or loops of the conductors. The invention also includes any desired means for simultaneously making electrical contact without the use of tools, and by the same means pinioning parts of the structure to combine and hold an assemblage of elements together. Thus electrical contact member D acts as an assembly holder as well as anchoring the electrical conductor in the body and making electrical con- 45 tact' therewith. It will be noted that substantially every part of the mechanism is enclosed and protected within the connector body, no elec- ,trical conductor parts or metal assembly parts which are employed being exposed, which is a distinct advantage. The combined electrical conuse in a wall receptacle in which the connector body A shown in Fig. l1, is inserted in the receptacle G, the electrical contact blades I1 and the spring catch I. being employed to hold the body fully inserted. In'Fig. 8 a lamp xture H is mounted on the connector body, saidxture being supported ilush with the face plate and its weight tending to hold the connector body tightly inserted through the resultant force applied bythe downward slant of the contact blades engaged in the receptacle. In a similar'manner the utility article represented by the thermostat or clock I. shown in Fig. l0 or any other article desired can be mounted on the connector body 'so as to be supported on the wall of a building structure. In Fig. 9 I have shown my improved connector body A constructed with a folding supporting hook 8l, hinged at 3l, and recessed when folded into the base of thebody. 'I'he weight of any object hung on the hook Il in a similar manner as described above' tends to hold the body seated in its wall receptacle G.
' In accordance with the patent statutes, I have described the principles of operation of my invention together with the structure which I now consider to represent the best embodiment thereof but I desire to have it understood that the construction shown is only illustrative and that the mventionfcan be carried out by other means and applied to other uses than those above set forth within the spirit of the invention and within the scope of the following claims.
1. An electrical connector having a body. said body having a circuitous duct therein adapted to receive and hold an insulated electrical conductor, and a connector element having a screw threaded 4shank inserted in said body longitu dinally of and entering the side of said passage o with its thread convolutions perforating the intact and assembly holder may be screw driven or modified and driven, clamped Ior otherwise constructed for making contact with and holding the conductor as well-as mechanically locking any of the parts of the assemblytogether. Also the mode of contacting the electrical conductor such as Il by the electric contact member D may be from any direction; in any manner and by any suit'- able'means, within the spirit of the invention.
The assemblage of parts constituting'lmy improvement. is light in weight and the body is easily 'removed from a cooperating receptacle.
The exposed base of the body or plug as disclosedin my companion application Serial Number 349,715, which, matured into Letters Patent No. 2,283,177, May' 19, 1942, can when desired be provided with a thin separable. surface plate Il, (see Figs. 3 and 4) colored as desired or styled to harmonize with the iinish of a room in which the body is lused, said surface plate being held along its sides and ends by clips 3i, bent or swaged over the body of the device.` y
In Figs. 8 to 1l inclusive, I have shown a modisulation of said conductor and contacting said conductor to make electrical connection therewith and retain the conductor in said passage.
2. An electrical connector having a body, said body having a longitudinal duct therein adapted to receive and hold an insulated conductor, a connector element having a pointed screw shank inserted point first through said body and entering the side of said duct with its thread convolutions penetrating the insulation of said conductnr and contacting said conductor to make electrical connection therewith and retain said conductor in said duct, and means for clamping the conductor on said body toprevent pulling strain upon the contact between the shank and the conductor.-
3. A n electrical connector having a body, said body having a chamber in its side, a circuitous duct connected with the iioor oi' said chamber and an inlet i'or admitting an electrical conductor into said chamber and duct, a connector element on said body having a screw threaded shank lnsertedin said body longitudinally of and entering the side of said duct with its thread convolutions engaging said conductor, a cover for said chamber having a fastening element inserted in said body and penetrated by said shank to hold the 4cover closed over said chamber. said cover having means for-engaging the body of said conductor to relieve pulling strain upon the contact between the shank and the conductor.
4. An electrical connector having a body, a connecting terminal mounted upon said body. said body having an inletfor admitting an intlcation' of my improved electrical connector for 15 lulated electrical conductor and a duct through which said conductor is threaded, and a screw element projecting inwardly from said connecting terminal and threaded longitudinally along one side of said duct with its thread penetrating the insulation and engaging the conductor there- 1n.
5. An electrical connector, comprising, a body having a duct therein for admitting and holding an insulated conductor, and a threaded electrical terminal seated in said body with only its thread perforating the insulation along the side of said conductor in said duct and making electrical contact with the conductor through its insulation.
6. An electrical connector, comprising, a body having a longitudinal duct therein adapted to receive and hold an insulated conductor,-and a terminal element having a screw shank inserted through said body and entering the side of said duct longitudinally thereof with its thread penetrating the insulation of said conductor and contacting said conductor within the insulation to make electrical connection therewith and retain the conductor in said duct.
'7. An electrical connector, comprising, a body having a longitudinal duct therein adapted to receive and hold an insulated conductor, a. terminal having a screw shank inserted through said body and entering the side of said duct longitudinally thereof with its thread penetrating the insulation of said conductor and contacting said conductor to make electrical connection therewith and retain the conductor in said duct, and means for clamping the conductor on said body to prevent pulling strain upon the contact between the shank and the conductor.
8. An electrical connector, comprising, a body having a chamber therein, a duct in said body connected -with said chamber, an inlet for admitting an insulated electrical conductor into said chamber and duct, a connector on said body having a screw threaded shank inserted in said body along one side of said duct with its thread convolutions .engaging said conductor, and a cover for said chamber having fastening means inserted in said body and penetrated by said shank to hold the cover closed over said chamber, said cover having means for engaging the body of said conductor to relieve pulling strain upon the contact between the shank and the conductor.
KENNETH A. BRAINARD.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US442697A US2380936A (en) | 1942-05-12 | 1942-05-12 | Electrical terminal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US442697A US2380936A (en) | 1942-05-12 | 1942-05-12 | Electrical terminal |
Publications (1)
Publication Number | Publication Date |
---|---|
US2380936A true US2380936A (en) | 1945-08-07 |
Family
ID=23757783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US442697A Expired - Lifetime US2380936A (en) | 1942-05-12 | 1942-05-12 | Electrical terminal |
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US (1) | US2380936A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2441234A (en) * | 1945-05-23 | 1948-05-11 | Dillon Harry Robertson | Glass spring for securing electrical units |
US2602106A (en) * | 1947-01-10 | 1952-07-01 | Hubbell Harvey | Wiring terminal connection for electrical wiring devices |
US4342494A (en) * | 1980-04-04 | 1982-08-03 | The Bendix Corporation | Electrical connector assembly |
-
1942
- 1942-05-12 US US442697A patent/US2380936A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2441234A (en) * | 1945-05-23 | 1948-05-11 | Dillon Harry Robertson | Glass spring for securing electrical units |
US2602106A (en) * | 1947-01-10 | 1952-07-01 | Hubbell Harvey | Wiring terminal connection for electrical wiring devices |
US4342494A (en) * | 1980-04-04 | 1982-08-03 | The Bendix Corporation | Electrical connector assembly |
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