US2159163A - Electric connector or terminal - Google Patents

Electric connector or terminal Download PDF

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Publication number
US2159163A
US2159163A US76328A US7632836A US2159163A US 2159163 A US2159163 A US 2159163A US 76328 A US76328 A US 76328A US 7632836 A US7632836 A US 7632836A US 2159163 A US2159163 A US 2159163A
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United States
Prior art keywords
cord
plug
twisting
electric connector
terminal
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US76328A
Inventor
John J Jolliffe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Okonite Co
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Okonite Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Okonite Co filed Critical Okonite Co
Priority to US76328A priority Critical patent/US2159163A/en
Application granted granted Critical
Publication of US2159163A publication Critical patent/US2159163A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01R13/56—Means for preventing chafing or fracture of flexible leads at outlet from coupling part
    • H01R13/562—Bending-relieving

Definitions

  • ELECTRIC CONNECTOR OR TERMINAL Filed April 25, 1956 may I INVENTOR MW WW ATTORNE Patented May 23, 1939 ELECTRIC CONNECTOR R TERDIINAL John J. Jollifie, Hawthorne, N. J., assignor to The Okonite Company, Passaic, N. J., a corporation of New Jersey Application April 25,
  • This invention relates to improvements in electrical connectors, and is particularly directed to attachment plugs for various electrical devices such as electric irons, toasters and the like.
  • the electric cord is subject to a great deal of twisting at the plug, and also to a combination of flexing and tension forces.
  • cords and plugs for electric irons there is a short quick bending action of the cord without a great deal of twisting, when the cord is new, but after a few hours of service there is a direct twisting of the cord.
  • This twisting apparently builds up until it finally becomes a force of considerable magnitude and the cord seems to retain this twist until it is disassembled from the appliance.
  • the cord this twisting reoccurs.
  • the twisting action is always in the same direction and at the same rate.
  • the cord is subjected to sufiicient tension to pull the plug from its receptacle; this of course places a severe strain on the cord and tends to pull the conductors free from their terminals.
  • the construction of the device of the present application is such as to overcome these defects or to eliminate their detrimental efiect on the device as a whole.
  • my device is so constructed that tension on the cord in a direction to pull the attachment plug out of its receptacle is taken up and absorbed by a spring, one end of which is attached to the plug and the other to the cord.
  • tension on the cord in a direction to pull the attachment plug out of its receptacle is taken up and absorbed by a spring, one end of which is attached to the plug and the other to the cord.
  • the twisting of the cord above referred to is resisted by this same spring so that there can be, in ordinary usage, no twisting of the conductors at the point of attachment to the plug terminals.
  • Fig. 1 is a sectional view of my improved attachment plug with the electric cord in place;
  • Fig. 2 is a sectional view on line 2-2 of Fig. 1.
  • I designates a plug made up of sections 2 and 3 of moulded insulating material secured to each other in any suitable manner and provided internally with split female terminal members 4 and 5.
  • An electric connector comprising a pair of moulded sections of insulating material, a coil spring one end of which is received between said and sections.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

May 23, 1939.
J. J. JOLLIFFE 2,159,163
ELECTRIC CONNECTOR OR TERMINAL Filed April 25, 1956 may I INVENTOR MW WW ATTORNE Patented May 23, 1939 ELECTRIC CONNECTOR R TERDIINAL John J. Jollifie, Hawthorne, N. J., assignor to The Okonite Company, Passaic, N. J., a corporation of New Jersey Application April 25,
1 Claim.
This invention relates to improvements in electrical connectors, and is particularly directed to attachment plugs for various electrical devices such as electric irons, toasters and the like.
In such devices, as heretofore constructed, the electric cord is subject to a great deal of twisting at the plug, and also to a combination of flexing and tension forces. For example, with cords and plugs for electric irons, there is a short quick bending action of the cord without a great deal of twisting, when the cord is new, but after a few hours of service there is a direct twisting of the cord. This twisting apparently builds up until it finally becomes a force of considerable magnitude and the cord seems to retain this twist until it is disassembled from the appliance. The next time the cord is used this twisting reoccurs. Apparently the twisting action is always in the same direction and at the same rate. Oftentimes the cord is subjected to sufiicient tension to pull the plug from its receptacle; this of course places a severe strain on the cord and tends to pull the conductors free from their terminals.
The construction of the device of the present application is such as to overcome these defects or to eliminate their detrimental efiect on the device as a whole. For example, my device is so constructed that tension on the cord in a direction to pull the attachment plug out of its receptacle is taken up and absorbed by a spring, one end of which is attached to the plug and the other to the cord. Thus no strain is brought on the cord conductors at their point of attachment to the plug terminals. The twisting of the cord above referred to is resisted by this same spring so that there can be, in ordinary usage, no twisting of the conductors at the point of attachment to the plug terminals.
I might say that by actual comparative tests my device has withstood twenty-five times the twisting that the prior type of cord and plug will withstand.
In the accompanying drawing wherein I have illustrated one embodiment of my invention:
Fig. 1 is a sectional view of my improved attachment plug with the electric cord in place; and
Fig. 2 is a sectional view on line 2-2 of Fig. 1.
1936, Serial No. 76,328
Referring to the drawing in detail, I designates a plug made up of sections 2 and 3 of moulded insulating material secured to each other in any suitable manner and provided internally with split female terminal members 4 and 5.
6 designates an electric cord, the ends of the conductors 1 of which are connected to the terminal members 4 and 5 by means of screws 8. Surrounding the cord 6 is a spring member 9 the end of which extends into the top of the connector I and is held against turning therein by making the end of the spring out-of-round in cross section and recessing the plug to conform with this end of the spring, or in any other suitable fashion.
The outer end of this spring is moulded or otherwise rigidly attached to the cord 6 as shown at II].
It will be appreciated from the foregoing description that by anchoring the spring 9 at one end to the plug I and at its other end to the cord 6, the twisting point of the cord has been moved outside the connector entirely and to a point remote from the connection of the conductors l of the cord to the terminals 4 and 5.
Inasmuch as twisting of the cord is no longer localized within the plug, rupturing of the cord is reduced to a minimum.
It is to be understood that various changes and modifications may be made in the structure illustrated Without departing from the spirit and scope of my invention.
What I claim is:
An electric connector comprising a pair of moulded sections of insulating material, a coil spring one end of which is received between said and sections.
JOHN J. JOLLIFFE.
US76328A 1936-04-25 1936-04-25 Electric connector or terminal Expired - Lifetime US2159163A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US76328A US2159163A (en) 1936-04-25 1936-04-25 Electric connector or terminal

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US76328A US2159163A (en) 1936-04-25 1936-04-25 Electric connector or terminal

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US2159163A true US2159163A (en) 1939-05-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644134A (en) * 1985-09-25 1987-02-17 Nordson Corporation Electrically heated hose having corrugated plastic cover
US4928201A (en) * 1988-11-21 1990-05-22 Wright Murray J Current collector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644134A (en) * 1985-09-25 1987-02-17 Nordson Corporation Electrically heated hose having corrugated plastic cover
US4928201A (en) * 1988-11-21 1990-05-22 Wright Murray J Current collector

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