US2535658A - Bx cable connector - Google Patents
Bx cable connector Download PDFInfo
- Publication number
- US2535658A US2535658A US34736A US3473648A US2535658A US 2535658 A US2535658 A US 2535658A US 34736 A US34736 A US 34736A US 3473648 A US3473648 A US 3473648A US 2535658 A US2535658 A US 2535658A
- Authority
- US
- United States
- Prior art keywords
- sleeve portion
- cable
- hole
- inner sleeve
- 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
Links
- 238000004873 anchoring Methods 0.000 description 13
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000001815 facial effect Effects 0.000 description 2
- 241000784303 Ochrosia compta Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
- H02G3/0616—Joints for connecting tubing to casing
- H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
- H02G3/0683—Joints for connecting tubing to casing with means for preventing disengagement of conductors with bolts operating in a direction transverse to the conductors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
- F16B2/08—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands
Definitions
- the present invention relates tosnew. and useful improvements in a connector for connecting a cable, such as'a BX-type arvmoredf cable, to an electrical outlet or: terminal box in electrical installations in homes, oflices and" other building structures.
- a cable such as'a BX-type arvmoredf cable
- A- further. object of the present invention is the. provision of a novel connector for insertion in the usual knockout'holes. of an electrical outletor terminal box ina manner to'have the usual BX type cable" pass. through the connector into the box...
- Still another object of the, present invention proposes providing the connector with an inner "offset sleeve portion arranged in a manner'to require a slight rotary movement in order to ex- I tend the inner" sl'eeve" portion through the hole of the outlet or terminal box.
- Another object or'thisa invention proposes the provision of a set screw on' the inner offset sleeve portion having a beveled outer end" arrangedin a manner so that the screw may be turnedout'to engage the material of the outlet or terminal box surrounding'the hole through which theconnector is inserted to secure the connector" in position;
- a further object ofthe present invention proposes constructing the connectorto includean.
- Stillanotherobject of' the presentinvention proposes providing the outer sleeve'portion with means-- for anchoring the end of a BX-type cable in'position within the connector.
- Eig;. ..l is a plan view of an electrical outlet or terminnadi box having its top; cover" removed and. havin a B yne cabla connected: theret by means-of a cable connector constructed in accordance withthe'present invention;
- FIG. 2 isan enlarged partial verticalsecti'onal View taken-on the line 22of Fig. 1.
- Fig; 4 is-a horizontalsectionalviewta-kenon the line 1-4 of" Fig; 3.
- Fig.- 5 is an end elevational viewwfthe-connector per selooking in'the direction-oftheline ii -5 0i Fig. 2.
- the cable connector in accordancewiththe present invention, is arranged to be used in connection with an electrical-outlet orterminal box lflof the typewhich normally hasits open top closed by a cover; not shown onthedrawings.
- the inside ofthe box It! is prov-ided with the usual lugs llagainst: which the cover is adapted to be rested and which are provided with the usual screwthreaded" openings romeceiving the screws whichsecure the cover in position.
- Such outlet or terminal boxes [0 are usually formedwith oneormore holes l2 normallyclosed by knock-out discs; not shown, which areadapted to be knockedoutto permit the insertion of the end of a BX-type armored cable I 3: That type of cable is generally known to those skilled in the art and includes a metallic cover-- M convolutely wound forming a spiral groove l5 about the length of: the.-cab1e.-
- The. cable connector is. characterized by. an inner sleeve portion I6 andian outer sleeve'por tion ii separated: from the inner sleeve portion it by a circular. flange [8. As shown iIILEiESluZ anda; the sleeve" portions? I 62. and l l andJthe cit:- cular flange l8 are integrallwformed';
- the end of the cable I3 is to be inserted into the connector from the outer end of the outer sleeve portion I? and means is provided within the inner sleeve portion I6 to prevent the cable from being passed entirely through the connector.
- This means comprises a small stop member 2
- the anchoring means comprises a small rib 22 formed with the outer sleeve portion Il adjacent the bottom thereof.
- This rib 22 is angularly disposed, as shown in Fig. 4, corresponding to the angular disposition of the spiral groove I of the cable I3 and is arranged to engage the spiral groove I5 between adjacent convolutions of the metallic cover Id of the cable l3.
- the outside of the outer sleeve portion ii on the side diametrically opposite the rib 22 is formed with a projecting boss 23.
- An anchor bolt 24 is obliquely threadedly passed through the boss 23 and is adapted to be tightened against the side of the cable I3 urging it toward the rib 22, so as to cooperate with the rib 22 for securely anchoring the end of the cable I3 in position within the cable connector.
- a connector for anchoring the end of a BX- type cable in position within the hole of an electrical outlet or terminal box comprising an inner sleeve portion and an outer sleeve portion separated by an intermediate flange for engag ing the material of the box surrounding its hole when the inner sleeve portion is inserted into the hole, said inner sleeve portion being oiTset downwardly to be inserted into the hole with a turning motion, means at the top of the inner sleeve portion for engaging the material of the box at the top of the hole to secure the inner sleeve portion in position, and means on the outer sleeve portion for anchoring the end of the cable in position within the sleeves, said first-mentioned means comprises a set screw having a beveled top end which is to be tightened against the material of the box at the top of the hole.
- a connector for anchoring the end of a BX- type cable in position within the hole of an elec- Number trical outlet or terminal box comprising an inner sleeve portion and an outer sleeve portion separated by an intermediate flange for engaging the material of the box surrounding its hole when the inner sleeve portion is inserted into the hole, said inner sleeve portion being ofiset downwardly to be inserted into the hol with a turning motion, means at the top of the inner sleeve portion for engaging the material of the box at the top of the hole to secure the inner sleeve portion in position, and means on the outer sleeve portion for anchoring the end of the cable in position within the sleeves, said cabl anchoring means comprises an anchor bolt screw threaded through one side of said outer sleeve portion, and a rib formed within said outer sleeve portion on the side opposite said bolt to engage in the spiral groove of the cable when the bolt is tightened against the cable.
- a connector for anchoring the end of 'a BX- type cable in position within th hole of an electrical outlet or terminal box comprising an inner sleeve portion and an outer sleeve portion separated by an intermediate flange for engaging the material of the box surrounding its hole when the inner sleeve portion is inserted into the hole from the outside of the box, said inner sleeve portion being ofifset downwardly to be inserted into the hole with a turning motion, a set screw threaded into said inner sleeve portion diametrically opposite its downwardly offset portion to be tightened against the adjacent material of the box defining the hole, an anchor bolt screw threaded through one side of said outer sleeve portion, and a rib formed within said outer sleeve portion on the side opposite said bolt to engage in the spiral groove of the cable when the bolt is tightened against the cable anchoring the cable in position within the outer sleeve portion.
- a connector for anchoring the end of a BX- type cable in position within the hole of an electrical outlet or terminal box comprising an inner sleeve portion and an outer sleeve portion separated by an intermediate flange for engaging the material of the box surrounding its hole when the inner sleeve portion is inserted into the hole from the outside of th box, said inner sleeve portion being ofiset downwardly to be inserted into the hole with a turning motion, a set screw threaded into said inner sleeve portion diametrically opposite its downwardly oiiset portion to be tightened against the adjacent material of the box defining the hole, an anchor bolt screw threaded through one side of said outer sleeve portion, and a rib formed within said outer sleeve portion on the side opposite said bolt to engage in the spiral groove of th cable when the bolt is tightened against the cable anchoring the cable in position within the outer sleeve portion, said set screw having a beveled top end for riding over the material of the
Description
Dec. 26, 1950 R. STROM BX CABLE CONNECTOR Filed June 23, 1948 INVENTOR. ROBERT STR OM Qua-n Muzak AME/71175) Patented Dec. 26, 1950 4 Glaiinss 1 This invention relates to new and" useful im'- provements in cable connectors.
More specifically, the present invention. relates tosnew. and useful improvements in a connector for connecting a cable, such as'a BX-type arvmoredf cable, to an electrical outlet or: terminal box in electrical installations in homes, oflices and" other building structures.
A- further. object of the present invention is the. provision ofa novel connector for insertion in the usual knockout'holes. of an electrical outletor terminal box ina manner to'have the usual BX type cable" pass. through the connector into the box...
Still another object of the, present invention proposes providing the connector with an inner "offset sleeve portion arranged in a manner'to require a slight rotary movement in order to ex- I tend the inner" sl'eeve" portion through the hole of the outlet or terminal box.
Another object" or'thisa invention proposes the provision of a set screw on' the inner offset sleeve portion having a beveled outer end" arrangedin a manner so that the screw may be turnedout'to engage the material of the outlet or terminal box surrounding'the hole through which theconnector is inserted to secure the connector" in position;
A further object ofthe present invention proposes constructing the connectorto includean.
outer sleeve portion separated from the inner sleeve portionby a flange arrangedin a manner to seat against the outer face of the material of the outlet or terminal box surrounding the hole:-
Stillanotherobject of' the presentinvention proposes providing the outer sleeve'portion with means-- for anchoring the end of a BX-type cable in'position within the connector.
It is" another object of the present invention. to-provide the interior of the connectorwith a stop member arranged in a manner'to limit.
insertion of the end'of' the-BX-type connector into the connector.
.tures of, ther invention are more particularly set forth.
In the accompanying drawings forming a material part of this disclosure:
Eig;. ..l is a plan view of an electrical outlet or terminnadi box having its top; cover" removed and. havin a B yne cabla connected: theret by means-of a cable connector constructed in accordance withthe'present invention;
Fig. 2 isan enlarged partial verticalsecti'onal View taken-on the line 22of Fig. 1. Fig. 3isavertical sectional view of the-con=- hector per setak-en on the line 3 --3 of"Fig; 2:
Fig; 4 is-a horizontalsectionalviewta-kenon the line 1-4 of" Fig; 3.
Fig.- 5 is an end elevational viewwfthe-connector per selooking in'the direction-oftheline ii -5 0i Fig. 2.
The cable connector; in accordancewiththe present invention, is arranged to be used in connection with an electrical-outlet orterminal box lflof the typewhich normally hasits open top closed by a cover; not shown onthedrawings. The inside ofthe box It! is prov-ided with the usual lugs llagainst: which the cover is adapted to be rested and which are provided with the usual screwthreaded" openings romeceiving the screws whichsecure the cover in position.
Such outlet or terminal boxes [0 are usually formedwith oneormore holes l2 normallyclosed by knock-out discs; not shown, which areadapted to be knockedoutto permit the insertion of the end of a BX-type armored cable I 3: That type of cable is generally known to those skilled in the art and includes a metallic cover-- M convolutely wound forming a spiral groove l5 about the length of: the.-cab1e.-
The. cable connector is. characterized by. an inner sleeve portion I6 andian outer sleeve'por tion ii separated: from the inner sleeve portion it by a circular. flange [8. As shown iIILEiESluZ anda; the sleeve" portions? I 62. and l l andJthe cit:- cular flange l8 are integrallwformed';
Referring :to; Fig. .2. of: the: drawings, itiwilli be noted that; the face of the flange; l8: adjacent the inner sleeve portionlfi abuts the outsidesface of" the outlet-or terminal box It about thehole i2; It will be further noted-thatthe-inner sleeve portion It, is" offset slightly" downwards so: that the inner sleeve portion l6 must be passed into the hole 12. with a rockingor turning movement aiteriirst engaging the material of. the outlet or terminal box at the bottom of the holei l-into the junction of. the inner sleeve-portion IS with the flange I8.
The. top side of the inner sleeve portion 16 1s provided witha set screw |9- having, a. beveled top edge 20. Theset screw [9 issolocated that when it is turned in a direction to move upwards relative to the inner sleeve pflltiOI-IJSJTJS: beveled top edge 20w will ride. across th edge of the material of theoutlet or terminalboxl llatthe top of the hole l2. This movement of the beveled top edge 2|] on the material of; the outlet orterminal; boxat. the-top of the; .hole; tiawill; draw in slightlvon the connector;andzcausectheflangee i8 to be drawn into tight facial contact with the side of the box I and simultaneously push downwards slightly on the inner sleeve portion I6 and cause the junction of the bottom of the inner sleeve portion I6 with the bottom of the flange I8 to be securely seated against the material of the outlet or terminal box ID at the bottom of the hole I2, securely locking the cable connector in position within the hole !2. To release the cable connector for removal from the hole I2 it is merely necessary to turn the set screw I9 downward in a direction to disengage the beveled top edge 20 of the set screw I9 from the material of the outlet or terminal box Ill at the top of the hole I2.
The end of the cable I3 is to be inserted into the connector from the outer end of the outer sleeve portion I? and means is provided within the inner sleeve portion I6 to prevent the cable from being passed entirely through the connector. This means comprises a small stop member 2| formed within the inner sleeve portion I6 and which depends from the top wall thereof and against which the inner end of the cable I3 is adapted to abut, as shown in Fig. 2.
Means is provided on the outer sleeve portion I! for anchoring the end of the BX-type cable in position within the cable connector. The anchoring means comprises a small rib 22 formed with the outer sleeve portion Il adjacent the bottom thereof. This rib 22 is angularly disposed, as shown in Fig. 4, corresponding to the angular disposition of the spiral groove I of the cable I3 and is arranged to engage the spiral groove I5 between adjacent convolutions of the metallic cover Id of the cable l3. Also, the outside of the outer sleeve portion ii on the side diametrically opposite the rib 22 is formed with a projecting boss 23. An anchor bolt 24 is obliquely threadedly passed through the boss 23 and is adapted to be tightened against the side of the cable I3 urging it toward the rib 22, so as to cooperate with the rib 22 for securely anchoring the end of the cable I3 in position within the cable connector.
While I have illustrated and described the preferred embodiment of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.
Having thus described my invention, what I claim' as new, and desire to secure by United States Letters Patent is:
l. A connector for anchoring the end of a BX- type cable in position within the hole of an electrical outlet or terminal box, comprising an inner sleeve portion and an outer sleeve portion separated by an intermediate flange for engag ing the material of the box surrounding its hole when the inner sleeve portion is inserted into the hole, said inner sleeve portion being oiTset downwardly to be inserted into the hole with a turning motion, means at the top of the inner sleeve portion for engaging the material of the box at the top of the hole to secure the inner sleeve portion in position, and means on the outer sleeve portion for anchoring the end of the cable in position within the sleeves, said first-mentioned means comprises a set screw having a beveled top end which is to be tightened against the material of the box at the top of the hole.
2. A connector for anchoring the end of a BX- type cable in position within the hole of an elec- Number trical outlet or terminal box, comprising an inner sleeve portion and an outer sleeve portion separated by an intermediate flange for engaging the material of the box surrounding its hole when the inner sleeve portion is inserted into the hole, said inner sleeve portion being ofiset downwardly to be inserted into the hol with a turning motion, means at the top of the inner sleeve portion for engaging the material of the box at the top of the hole to secure the inner sleeve portion in position, and means on the outer sleeve portion for anchoring the end of the cable in position within the sleeves, said cabl anchoring means comprises an anchor bolt screw threaded through one side of said outer sleeve portion, and a rib formed within said outer sleeve portion on the side opposite said bolt to engage in the spiral groove of the cable when the bolt is tightened against the cable.
3. A connector for anchoring the end of 'a BX- type cable in position within th hole of an electrical outlet or terminal box, comprising an inner sleeve portion and an outer sleeve portion separated by an intermediate flange for engaging the material of the box surrounding its hole when the inner sleeve portion is inserted into the hole from the outside of the box, said inner sleeve portion being ofifset downwardly to be inserted into the hole with a turning motion, a set screw threaded into said inner sleeve portion diametrically opposite its downwardly offset portion to be tightened against the adjacent material of the box defining the hole, an anchor bolt screw threaded through one side of said outer sleeve portion, and a rib formed within said outer sleeve portion on the side opposite said bolt to engage in the spiral groove of the cable when the bolt is tightened against the cable anchoring the cable in position within the outer sleeve portion.
4. A connector for anchoring the end of a BX- type cable in position within the hole of an electrical outlet or terminal box, comprising an inner sleeve portion and an outer sleeve portion separated by an intermediate flange for engaging the material of the box surrounding its hole when the inner sleeve portion is inserted into the hole from the outside of th box, said inner sleeve portion being ofiset downwardly to be inserted into the hole with a turning motion, a set screw threaded into said inner sleeve portion diametrically opposite its downwardly oiiset portion to be tightened against the adjacent material of the box defining the hole, an anchor bolt screw threaded through one side of said outer sleeve portion, and a rib formed within said outer sleeve portion on the side opposite said bolt to engage in the spiral groove of th cable when the bolt is tightened against the cable anchoring the cable in position within the outer sleeve portion, said set screw having a beveled top end for riding over the material of the box defining the hole to simultaneously push downward on said inner sleeve and pull inward thereon to draw said flange into tight facial contact with the material of the box surrounding said opening.
ROBERT STROM.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Name Date 1,191,078 Hutton July 11, 1916 Re.18,634 Thomas Oct. 13, 1932
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US34736A US2535658A (en) | 1948-06-23 | 1948-06-23 | Bx cable connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US34736A US2535658A (en) | 1948-06-23 | 1948-06-23 | Bx cable connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2535658A true US2535658A (en) | 1950-12-26 |
Family
ID=21878274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US34736A Expired - Lifetime US2535658A (en) | 1948-06-23 | 1948-06-23 | Bx cable connector |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2535658A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3139480A (en) * | 1961-12-04 | 1964-06-30 | Killark Electric Mfg Company | Electrical junction box with eccentric sockets in a common boss |
| US3306638A (en) * | 1964-01-23 | 1967-02-28 | Morton S Rubin | Electrical connection element for wiring conduit |
| USD380197S (en) * | 1996-01-30 | 1997-06-24 | AFC Cable Systems, Inc. | Cable connector |
| USD381630S (en) * | 1995-11-08 | 1997-07-29 | Wpfy, Inc. | Duplex cable connector |
| WO2018057207A1 (en) * | 2016-09-21 | 2018-03-29 | Siemens Industry, Inc. | Pin-based non-metallic fittings for attachment of flexible metallic conduit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1191078A (en) * | 1915-04-22 | 1916-07-11 | Raymond M Hutton | Armored-cable coupling. |
| USRE18634E (en) * | 1932-10-18 | Cable connecter |
-
1948
- 1948-06-23 US US34736A patent/US2535658A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE18634E (en) * | 1932-10-18 | Cable connecter | ||
| US1191078A (en) * | 1915-04-22 | 1916-07-11 | Raymond M Hutton | Armored-cable coupling. |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3139480A (en) * | 1961-12-04 | 1964-06-30 | Killark Electric Mfg Company | Electrical junction box with eccentric sockets in a common boss |
| US3306638A (en) * | 1964-01-23 | 1967-02-28 | Morton S Rubin | Electrical connection element for wiring conduit |
| USD381630S (en) * | 1995-11-08 | 1997-07-29 | Wpfy, Inc. | Duplex cable connector |
| USD380197S (en) * | 1996-01-30 | 1997-06-24 | AFC Cable Systems, Inc. | Cable connector |
| WO2018057207A1 (en) * | 2016-09-21 | 2018-03-29 | Siemens Industry, Inc. | Pin-based non-metallic fittings for attachment of flexible metallic conduit |
| CN109716607A (en) * | 2016-09-21 | 2019-05-03 | 西门子工业公司 | The nonmetallic fitting based on pin of attachment for flexible metal conduit |
| CN109716607B (en) * | 2016-09-21 | 2020-09-11 | 西门子工业公司 | Pin-based non-metallic fitting for attachment of flexible metal conduit |
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