US2265179A - Armored cable connector - Google Patents
Armored cable connector Download PDFInfo
- Publication number
- US2265179A US2265179A US274289A US27428939A US2265179A US 2265179 A US2265179 A US 2265179A US 274289 A US274289 A US 274289A US 27428939 A US27428939 A US 27428939A US 2265179 A US2265179 A US 2265179A
- Authority
- US
- United States
- Prior art keywords
- box
- socket
- cable
- connector
- shoulder
- 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
- 239000004020 conductor Substances 0.000 description 5
- 210000005069 ears Anatomy 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002105 tongue Anatomy 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
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
- Y10S411/999—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener with retainer, e.g. tether
Definitions
- This invention relates to connectors for securing armored cables to wiring boxes and more particularly for securing an armored service entrance cable to a meter or switch box.
- One object of the presentinvention is to provide a tamper-proof connector, or,in other words to so construct andarrange a connector .that it will be impossible to mechanically disconnect the i cable from the box or to, slip the armor back-so as to expose the conductors.
- Fig. 1 is a front elevation of my improved connector as it appears when applied-to a box;
- Fig. 2 is a transverse section on the line 22 thereof, looking in the direction of the arrows, the armored cable itself being shown in dotted lines;
- Fig. 3 is a rear elevation of the connector shown in Figs. 1 and 2, looking from the inside of the box;
- Fig. 4 is a perspective view of the connector itself.
- my improved connector comprises a body member I havingat one side a semi-circular outline as shown iniFig. 1, and provided with a concentricsocket or opening 2 to receive the armored cable, indicated at A in Fig.2.
- a barrel or elongated socket member 3 Extending rearwardly from the body member I and preferably formed integral therewith is a barrel or elongated socket member 3, terminatpreferably having rounded outer edges, as shown in Fig. 2.
- the body I is provided with a laterally'extending flange forming a rigid shoulder or fiat face l adapted to rest against the outside of the box around the hole or opening cut therein to receive the socket member 3, and adjacent the flat face l I provide an enlargement 5 integral with the walls of the socket member 3 and threaded to receive the usual locking nut 6 for securing the connector in place.
- the wall of the box B is gripped between the fiat face I and the nut 6, as clearly shown in Fig. 2. 1
- a pinch-type clamp Formed integral with the walls of the socket member 3 at .a point between the end 4 and the enlarged threaded portion 5, is a pinch-type clamp comprising resilient tongues conforming with the shape of the socket member 3 and provideda-t their free. ends with upstanding ears 7 adapted to receive a binding screw. 8, in a well known manner.
- Iiorm my improved connector with a lateral extension 9, and place adjacent the end of this extension and preferably integral therewith, an inwardly extending threaded stud [0, shown as provided with a pointed-end I0.
- the opening in the nut is of such size as to enable it to ing at its end in an inturned annular flange 4, 65 be slipped over the ears 1 of the clamp. It is for this reason that the threaded portion 5 is enlarged, as shown.
- the armored cable A is then inserted into the socket of the connector until its end engages the inturned flange or shoulder 4, this acting as a stop to properly position the cable.
- the conductors C of the cable project into the box through the center of the annular flange 4, the rounded edges of this flange serving to prevent the conductors from being cut or injured.
- the entire connector is formed of an integral casting, the only additional parts required being the nuts and screw.
- the invention is not necessarily limited to all parts being formed integral, as the stud I0 may be formed separately, if de sired.
- a tamper-proof fitting for connecting armored cables to wiring boxes comprising a member having an elongated socket to receive the cable and also having a rigid shoulder surrounding said socket, a pinch-type clamp formed integral with the'walls of said socket, screw threads on said member between said shoulder and clamp and a nut engaging said threads to grip the wall of the box between said shoulder and said nut.
- a fitting for connecting armored cables to Wiring boxes comprising a member having an elongated socket to receive the cable and also having a shoulder surrounding said socket, a pinch-type clamp formed integral with the walls of said socket, the walls of said socket between said shoulder and clamp having an enlarged portion, and screw threads formed on said enlarged portion and adapted to receive a nut to grip the wall of the box between itself and said shoulder, said nut being of a size to pass freely over said clamp.
- a fitting for connecting armored cables to wiring boxes comprising a member having an elongated socket to receive the cable, means adjacent one end of said socket for securing said member to the wall of the box, an inturned flange at the other end of said socket to engage the end of the armor of the cable, and a pinch-type clamp formed integral with the walls of said socket at a point intermediate its ends.
- a tamper-proof fitting for connecting armored cables to wiring boxes comprising a member having a fiat face adapted to lieagainst the wall of a box and an elongated socket projecting from said face and constructed to receive the cable, means for securing said member in position on a box, and a pinch-type clamp formed integral with the walls of said socket at a point intermediate its ends.
- a fitting for connecting armored cables to wiring boxes comprising a member having a cable receiving socket formed integral therewith, a nut surrounding said socket for securing said member to a box, said member having a lateral extension, and screw means adjacent the end of said extension and in addition to said nut for bonding said member to the box.
- a tamper-proof connector comprising a member having a laterally extending 'fiange forming .a rigid shoulder engaging the outside of the box and also having a socket adapted to receive an armored cable and extending through said opening into the box, means located inside of the box for clamping the cable in said socket, and a lock nut encircling said socket at a point between said shoulder and clamping means and also, located inside of the box co-operating with said'shoulder for securing said member to the box.
- a tampenproof connector comprising a member having a laterally extending flange forming a rigid shoulder engaging the outside of the box and also having a socket adapted to receive an armored cable and extending inside of the box, a pinchtype clamp carried by said socket inside of the box for holding the cable in said socket, and a locking nut encircling said socket between said shoulder and clamp and adapted to engage the inner wall of thebox, said nut being of such size as to slip freely oversaid clamp.
- a connector comprising a member having a flat face engaging the outside of said box and overlying both said openings, said member having a cable receiving socket extending through one of said openings into the box, means adjacent said opening for securing said member in position, means inside of the box for clamping a cable in said socket, and screw means, in addition to said-securing means, passing through the other of said openings to bond the connector to the box.
- a tamper-proof connector comprising a member having a socket adapted to receive'an armored'cable and also having a radially extending flange forming a rigid shoulder surrounding said socket, cable clamping means carried by said socket and insertable therewith through said opening into the box, and means located inside the box between said clamping means and shoulder and co-operating with said shoulder for securing said member to theibox.
- the combination with a wiring box having an opening, of a tamper-proof connector comprising a member having .a-socket adapted to receive an armored cable and also having a rigid shoulder surrounding said socket, cable clamping'means carried by said socket and insertable therewith through said opening into the box until said shoulder engages the outside of the box, and a lock nut, of such size as to slip freely over said clamping means, encircling said socket within the box and engaging the inside of the box, so as to grip the wall of the box between itself and said shoulder and thus secure the member in position.
Description
R. P. M DONALD 2,265,179
I ARMORED CABLE CONNECTOR Filed May 17, 1939 Patented Dec. 9, 1941 UNITED STATES PATENT OFFICE AR-MORED CABLE CONN ECTOR.
. Robert P.'- MacDonald, Huntington, -N. .Y.
Application May 17, 1939, Serial No. 274,289
11 Claims.
This invention relates to connectors for securing armored cables to wiring boxes and more particularly for securing an armored service entrance cable to a meter or switch box.
It has been found that, with the use of connectors of the type now commonlyemployed, in which the cable clamping .means is on the outside of the box, it is possible, by loosening this clamping means, to slip the armor back far enough to expose the conductors. and to tap such conductors and illegally take. currenttherefrom.
One object of the presentinvention is to providea tamper-proof connector, or,in other words to so construct andarrange a connector .that it will be impossible to mechanically disconnect the i cable from the box or to, slip the armor back-so as to expose the conductors. To this end, I
propose to place the cable clamp on the inside .of
devices, the-invention consists in the construc- 1 tion and arrangement of parts hereinafter described and claimed and illustratedin the accompanying drawing, forming part of this specification, and in which:
Fig. 1 is a front elevation of my improved connector as it appears when applied-to a box;
Fig. 2 is a transverse section on the line 22 thereof, looking in the direction of the arrows, the armored cable itself being shown in dotted lines;
Fig. 3 is a rear elevation of the connector shown in Figs. 1 and 2, looking from the inside of the box; and
Fig. 4 is a perspective view of the connector itself.
Referring to the drawing in detail, my improved connector comprises a body member I havingat one side a semi-circular outline as shown iniFig. 1, and provided with a concentricsocket or opening 2 to receive the armored cable, indicated at A in Fig.2.
Extending rearwardly from the body member I and preferably formed integral therewith is a barrel or elongated socket member 3, terminatpreferably having rounded outer edges, as shown in Fig. 2.
The body I is provided with a laterally'extending flange forming a rigid shoulder or fiat face l adapted to rest against the outside of the box around the hole or opening cut therein to receive the socket member 3, and adjacent the flat face l I provide an enlargement 5 integral with the walls of the socket member 3 and threaded to receive the usual locking nut 6 for securing the connector in place. In installing the connector, the wall of the box B is gripped between the fiat face I and the nut 6, as clearly shown in Fig. 2. 1
Formed integral with the walls of the socket member 3 at .a point between the end 4 and the enlarged threaded portion 5, is a pinch-type clamp comprising resilient tongues conforming with the shape of the socket member 3 and provideda-t their free. ends with upstanding ears 7 adapted to receive a binding screw. 8, in a well known manner.
,In order to provide an independent grounding or bonding means, Iiorm my improved connector with a lateral extension 9, and place adjacent the end of this extension and preferably integral therewith, an inwardly extending threaded stud [0, shown as provided with a pointed-end I0.
In installing my improved connector, 9. hole or opening is first'cut in the box at the desired point, this opening being large enough to receive .the enlarged portion 5 of the connector socket. The socket is then inserted through the opening. and the connector rotated around the socket as a center, thus causing the pointed end HJ of the stud H] to scratch an arcuate line or mark. non the outer wall of the box, as indicated in brokenlines in Fig. 1. The installer thenrernoves the connector and drills a hole at any desired point on the line :t'of a suitable size to receive thestud [0. Having drilled this hole, he may then place the connector in position, as shown in Fig. 2, and secure it in such position by meansof the nut 6 engaging the threaded portion 5 of the socket, and also by means of one ormorenuts ll, engaging the threaded stud Ill, and servingto tightly bond this stud to the box.
Employing this method .of locating the hole'for the :stud- ID, I am enabled to. avoid the necessity of a template.
It will, of course, be understood that the opening in the nut is of such size as to enable it to ing at its end in an inturned annular flange 4, 65 be slipped over the ears 1 of the clamp. It is for this reason that the threaded portion 5 is enlarged, as shown.
The armored cable A is then inserted into the socket of the connector until its end engages the inturned flange or shoulder 4, this acting as a stop to properly position the cable. The conductors C of the cable project into the box through the center of the annular flange 4, the rounded edges of this flange serving to prevent the conductors from being cut or injured.
From the foregoing, it will thus be seen that I have provided an improved connector in which both the locking nut and the cable clamp are lo-. cated inside of the box so as to be inaccessible to unauthorized persons, and that when the cable has once been inserted in the connector and the binding screw 8 tightened up, it will be impossible to disconnect or withdraw the cable or armor.
Preferably the entire connector, asshown in Fig. 4, is formed of an integral casting, the only additional parts required being the nuts and screw. The invention, however, is not necessarily limited to all parts being formed integral, as the stud I0 may be formed separately, if de sired.
What I claim is:
,1. A tamper-proof fitting for connecting armored cables to wiring boxes comprising a member having an elongated socket to receive the cable and also having a rigid shoulder surrounding said socket, a pinch-type clamp formed integral with the'walls of said socket, screw threads on said member between said shoulder and clamp and a nut engaging said threads to grip the wall of the box between said shoulder and said nut.
2. A fitting for connecting armored cables to Wiring boxes comprising a member having an elongated socket to receive the cable and also having a shoulder surrounding said socket, a pinch-type clamp formed integral with the walls of said socket, the walls of said socket between said shoulder and clamp having an enlarged portion, and screw threads formed on said enlarged portion and adapted to receive a nut to grip the wall of the box between itself and said shoulder, said nut being of a size to pass freely over said clamp.
3. A fitting for connecting armored cables to wiring boxes comprising a member having an elongated socket to receive the cable, means adjacent one end of said socket for securing said member to the wall of the box, an inturned flange at the other end of said socket to engage the end of the armor of the cable, and a pinch-type clamp formed integral with the walls of said socket at a point intermediate its ends.
4. A tamper-proof fitting for connecting armored cables to wiring boxes comprising a member having a fiat face adapted to lieagainst the wall of a box and an elongated socket projecting from said face and constructed to receive the cable, means for securing said member in position on a box, and a pinch-type clamp formed integral with the walls of said socket at a point intermediate its ends.
5. A fitting for connecting armored cables to wiring boxes comprising a member having a cable receiving socket formed integral therewith, a nut surrounding said socket for securing said member to a box, said member having a lateral extension, and screw means adjacent the end of said extension and in addition to said nut for bonding said member to the box.
.. an opening, of a tamper-proof connector comprising a member having a laterally extending 'fiange forming .a rigid shoulder engaging the outside of the box and also having a socket adapted to receive an armored cable and extending through said opening into the box, means located inside of the box for clamping the cable in said socket, and a lock nut encircling said socket at a point between said shoulder and clamping means and also, located inside of the box co-operating with said'shoulder for securing said member to the box. 7
8. The combination with a wiring box, of a tampenproof connector comprising a member having a laterally extending flange forming a rigid shoulder engaging the outside of the box and also having a socket adapted to receive an armored cable and extending inside of the box, a pinchtype clamp carried by said socket inside of the box for holding the cable in said socket, and a locking nut encircling said socket between said shoulder and clamp and adapted to engage the inner wall of thebox, said nut being of such size as to slip freely oversaid clamp.
9. The combination with a wiring box having two openings, spaced apart, of a connector comprising a member having a flat face engaging the outside of said box and overlying both said openings, said member having a cable receiving socket extending through one of said openings into the box, means adjacent said opening for securing said member in position, means inside of the box for clamping a cable in said socket, and screw means, in addition to said-securing means, passing through the other of said openings to bond the connector to the box.
10. The combination with a wiring box having an opening, of a tamper-proof connector comprising a member having a socket adapted to receive'an armored'cable and also having a radially extending flange forming a rigid shoulder surrounding said socket, cable clamping means carried by said socket and insertable therewith through said opening into the box, and means located inside the box between said clamping means and shoulder and co-operating with said shoulder for securing said member to theibox.
11. The combination with a wiring box having an opening, of a tamper-proof connector comprising a member having .a-socket adapted to receive an armored cable and also having a rigid shoulder surrounding said socket, cable clamping'means carried by said socket and insertable therewith through said opening into the box until said shoulder engages the outside of the box, and a lock nut, of such size as to slip freely over said clamping means, encircling said socket within the box and engaging the inside of the box, so as to grip the wall of the box between itself and said shoulder and thus secure the member in position.
ROBERT P. MACDONAID.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US274289A US2265179A (en) | 1939-05-17 | 1939-05-17 | Armored cable connector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US274289A US2265179A (en) | 1939-05-17 | 1939-05-17 | Armored cable connector |
Publications (1)
Publication Number | Publication Date |
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US2265179A true US2265179A (en) | 1941-12-09 |
Family
ID=23047593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US274289A Expired - Lifetime US2265179A (en) | 1939-05-17 | 1939-05-17 | Armored cable connector |
Country Status (1)
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US (1) | US2265179A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3254399A (en) * | 1962-11-23 | 1966-06-07 | Crawford Fitting Co | Bulkhead support and fastening means |
US3981069A (en) * | 1975-04-10 | 1976-09-21 | Aubrey Manufacturing, Incorporated | Range-hood electrical wiring connection arrangement and method of connecting same |
US5073100A (en) * | 1990-05-18 | 1991-12-17 | Outboard Marine Corporation | Clamp assembly |
US6762727B2 (en) | 2001-10-09 | 2004-07-13 | Tyco Electronics Corporation | Quick-attach, single-sided automotive antenna attachment assembly |
US20050237248A1 (en) * | 2003-11-25 | 2005-10-27 | Harada Industry Co., Ltd. | Vehicle roof antenna attachment |
US7004666B2 (en) * | 2001-10-09 | 2006-02-28 | Tyco Electronics Corporation | Quick-attach automotive antenna mounting assembly |
US20100115728A1 (en) * | 2007-04-04 | 2010-05-13 | Yazaki Corporation | Grommet |
CN102163830A (en) * | 2010-12-17 | 2011-08-24 | 华北电力科学研究院有限责任公司 | Linear interconnection method and device for optical fiber composite power cable |
US20140203548A1 (en) * | 2011-09-05 | 2014-07-24 | Alstom Grid Gmbh | Electrical switchgear unit |
US20140294390A1 (en) * | 2010-04-06 | 2014-10-02 | Christopher M. Badinelli | Method and apparatus for protecting fiber optic distribution systems |
US20140339824A1 (en) * | 2011-12-15 | 2014-11-20 | Volvo Construction Equipment Ab | Input/output pipe reinforcing device for vehicle compressor |
US20190301652A1 (en) * | 2018-03-30 | 2019-10-03 | Bell Helicopter Textron Inc. | Multiport piston-seal fitting |
US20190301653A1 (en) * | 2018-03-30 | 2019-10-03 | Bell Helicopter Textron Inc. | Fluid-Fitting Adapter |
-
1939
- 1939-05-17 US US274289A patent/US2265179A/en not_active Expired - Lifetime
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3254399A (en) * | 1962-11-23 | 1966-06-07 | Crawford Fitting Co | Bulkhead support and fastening means |
US3981069A (en) * | 1975-04-10 | 1976-09-21 | Aubrey Manufacturing, Incorporated | Range-hood electrical wiring connection arrangement and method of connecting same |
US5073100A (en) * | 1990-05-18 | 1991-12-17 | Outboard Marine Corporation | Clamp assembly |
US7212168B2 (en) | 2001-10-09 | 2007-05-01 | Tyco Electronics Corporation | Quick-attach automotive antenna mounting assembly |
US6762727B2 (en) | 2001-10-09 | 2004-07-13 | Tyco Electronics Corporation | Quick-attach, single-sided automotive antenna attachment assembly |
US7004666B2 (en) * | 2001-10-09 | 2006-02-28 | Tyco Electronics Corporation | Quick-attach automotive antenna mounting assembly |
US20060110214A1 (en) * | 2001-10-09 | 2006-05-25 | Kozlovski A D | Quick-attach automotive antenna mounting assembly |
US20050237248A1 (en) * | 2003-11-25 | 2005-10-27 | Harada Industry Co., Ltd. | Vehicle roof antenna attachment |
US7088297B2 (en) | 2003-11-25 | 2006-08-08 | Harada Industry Co., Ltd. | Vehicle roof antenna attachment |
US20100115728A1 (en) * | 2007-04-04 | 2010-05-13 | Yazaki Corporation | Grommet |
US9083168B2 (en) * | 2007-07-04 | 2015-07-14 | Yazaki Corporation | Grommet |
US20140294390A1 (en) * | 2010-04-06 | 2014-10-02 | Christopher M. Badinelli | Method and apparatus for protecting fiber optic distribution systems |
US9490929B2 (en) * | 2010-04-06 | 2016-11-08 | Christopher M. Badinelli | Method and apparatus for protecting fiber optic distribution systems |
CN102163830A (en) * | 2010-12-17 | 2011-08-24 | 华北电力科学研究院有限责任公司 | Linear interconnection method and device for optical fiber composite power cable |
US20140203548A1 (en) * | 2011-09-05 | 2014-07-24 | Alstom Grid Gmbh | Electrical switchgear unit |
US20140339824A1 (en) * | 2011-12-15 | 2014-11-20 | Volvo Construction Equipment Ab | Input/output pipe reinforcing device for vehicle compressor |
US9416900B2 (en) * | 2011-12-15 | 2016-08-16 | Volvo Construction Equipment Ab | Input/output pipe reinforcing device for vehicle compressor |
US20190301652A1 (en) * | 2018-03-30 | 2019-10-03 | Bell Helicopter Textron Inc. | Multiport piston-seal fitting |
US20190301653A1 (en) * | 2018-03-30 | 2019-10-03 | Bell Helicopter Textron Inc. | Fluid-Fitting Adapter |
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