US1648764A - Renewable fuse-attachment plug - Google Patents

Renewable fuse-attachment plug Download PDF

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Publication number
US1648764A
US1648764A US82781A US8278126A US1648764A US 1648764 A US1648764 A US 1648764A US 82781 A US82781 A US 82781A US 8278126 A US8278126 A US 8278126A US 1648764 A US1648764 A US 1648764A
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United States
Prior art keywords
arm
plug
attachment
attachment plug
renewable fuse
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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
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US82781A
Inventor
Frank F Frakes
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.)
JOSEPH M DEDMAN
Original Assignee
JOSEPH M DEDMAN
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.)
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Publication date
Application filed by JOSEPH M DEDMAN filed Critical JOSEPH M DEDMAN
Priority to US82781A priority Critical patent/US1648764A/en
Application granted granted Critical
Publication of US1648764A publication Critical patent/US1648764A/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
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/94—Holders formed as intermediate parts for linking a counter-part to a coupling part

Definitions

  • the present invention relates to attachment plugs especially adapted for use in connection with electrical appliances to feed sockets and more particularly attachment plugs having renewable fuses.
  • An important object of the invention is to provide a novel and inexpensive means for automatically breaking the circuit to the appliance, should a short circuit occur which would ordinarily burn out the wire or appliance.
  • a further object of the invention is the provision of a device of this character which will be readily repaired by .persons unfamiliar with mechanics, to the end that the socket may again be brought into service.
  • Figure 1 is a sectional view through an attachment plug constructed in accordance' with the invention.
  • FIG. 2 is a sectional View through an attachment plug, after the fuse has been burned out.
  • Figure 3 is a sectional view taken on line 3-3 of Figure 1.
  • Figure 4.- is a bottom plan view of the attachment cap.
  • rthe reference character 5 indicates the plug section ofthe attachment plug, and as shown, the same is provided with the usual metallic threaded end member 6 that cooperates with the threaded socket in which the plug is to be positioned, for securing the plug within the socket.
  • Pairs of spring fingers 7 are provided in the plug section, and as illustrated by Figures 1 and 2, these lingers cooperate to grip the contact arms 8 that form a part of the attachment cap 9 which constitutes -the upper section of the plug.
  • cap 9 Secured within the attachment. cap 9 is a spring arm 10 which extends downwardly in parallel relation with the arms 8, and adjacent to one of the arms. The free end of the arm 10 is adapted to be moved into engagement with the arm 8 adjacent thereto,
  • Wires 12 and 13 extend into the usual central opening of the attachment cap, one ot the wires being secured to the screw 14 that is employed for connecting the arm 10 to the cap, to theend that electric energy will be carried oil' through the wire 12, to the appliance which is connected with the opposite end of the wires.
  • a separable electric plug having pairs of' spring fingers and substantially straight contact arms to be positioned between the spring lingers, a spring arm secured to one of the sections and arranged adjacent to one of the contact arms, a securing wire of fusible material vfor securing the spring arm to the contact arm, and said securing arm adapted to be slid over the tree ends of the contact arm and

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

Description

F F FRAKES RENEWABLE FUSE ATTACHMENT PLUG Filed Jan. 21. 1926 Nov. 8, 1927.
Snom/Moz Patented `Nov. 8, 1927.
f UNITED STATES,
PATENT OFFICE.
EEANK E. EEAKES, OE COLUMBIA, TENNESSEE, AssrGNoa OE ONE-HALE To JOSEPH M.
- DEDMAN, OE COLUMBIA. TENNESSEE.
RENEWABLE FUSE-ATTACHMENT PLUG.
Application led January 21, 1926. Serial No. 82,781.
The present invention relates to attachment plugs especially adapted for use in connection with electrical appliances to feed sockets and more particularly attachment plugs having renewable fuses.
An important object of the invention is to provide a novel and inexpensive means for automatically breaking the circuit to the appliance, should a short circuit occur which would ordinarily burn out the wire or appliance.
A further object of the invention is the provision of a device of this character which will be readily repaired by .persons unfamiliar with mechanics, to the end that the socket may again be brought into service.
With the foregoing and other objects in view which will appear as the descrip-tion proceeds, the invention resides in the combination and arrangement of parts and 1n the details of construction hereinaftendescribed and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made 5 within the scope of what is claimed, without departing from the spirit of the invention.
Referring to the drawing:
Figure 1 is a sectional view through an attachment plug constructed in accordance' with the invention.
` Figure 2 is a sectional View through an attachment plug, after the fuse has been burned out.
Figure 3 is a sectional view taken on line 3-3 of Figure 1.
Figure 4.- is a bottom plan view of the attachment cap.
Referring to the drawing in detail, rthe reference character 5 indicates the plug section ofthe attachment plug, and as shown, the same is provided with the usual metallic threaded end member 6 that cooperates with the threaded socket in which the plug is to be positioned, for securing the plug within the socket.
Pairs of spring fingers 7 are provided in the plug section, and as illustrated by Figures 1 and 2, these lingers cooperate to grip the contact arms 8 that form a part of the attachment cap 9 which constitutes -the upper section of the plug.
' spring arm.
Secured within the attachment. cap 9 is a spring arm 10 which extends downwardly in parallel relation with the arms 8, and adjacent to one of the arms. The free end of the arm 10 is adapted to be moved into engagement with the arm 8 adjacent thereto,
there being provided a. securing lnember `1l formed of suitable fusible material adapted to hold the arm 1() adjacentl to the arm 8, associated therewith, .to the end that electric energy passing through the arm 8 will be directed to the arm 10 through the wire.
Wires 12 and 13 extend into the usual central opening of the attachment cap, one ot the wires being secured to the screw 14 that is employed for connecting the arm 10 to the cap, to theend that electric energy will be carried oil' through the wire 12, to the appliance which is connected with the opposite end of the wires. y
From the foregoing it will be seen that should al short circuit occur in the electric circuit and which would otherwise result in the burning out ofv the electric appliance or Wire, fuse member 11 will be burned allowing the arm 10 to spring outwardly away from the arm 8 as shown by Figures 2, thereby breaking the circuit.
To renew the plug, it is only necessary to disconnect the plug section and attachment cap, and move the arm 10 into close engagement with the arm 8 and place a. fusible member over the arms to connect them.
In combination with a separable electric plug having pairs of' spring fingers and substantially straight contact arms to be positioned between the spring lingers, a spring arm secured to one of the sections and arranged adjacent to one of the contact arms, a securing wire of fusible material vfor securing the spring arm to the contact arm, and said securing arm adapted to be slid over the tree ends of the contact arm and In testimonyitliat I claim the foregoing as my Own, I have hereto aliixed my signature.
FRANK E. FRAKES.
US82781A 1926-01-21 1926-01-21 Renewable fuse-attachment plug Expired - Lifetime US1648764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US82781A US1648764A (en) 1926-01-21 1926-01-21 Renewable fuse-attachment plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82781A US1648764A (en) 1926-01-21 1926-01-21 Renewable fuse-attachment plug

Publications (1)

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US1648764A true US1648764A (en) 1927-11-08

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Family Applications (1)

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US82781A Expired - Lifetime US1648764A (en) 1926-01-21 1926-01-21 Renewable fuse-attachment plug

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686856A (en) * 1951-07-06 1954-08-17 Cardone Eugene Electric plug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686856A (en) * 1951-07-06 1954-08-17 Cardone Eugene Electric plug

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