US949296A - Fuse for electric circuits. - Google Patents

Fuse for electric circuits. Download PDF

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Publication number
US949296A
US949296A US39955407A US1907399554A US949296A US 949296 A US949296 A US 949296A US 39955407 A US39955407 A US 39955407A US 1907399554 A US1907399554 A US 1907399554A US 949296 A US949296 A US 949296A
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United States
Prior art keywords
fuse
electric circuits
terminals
strip
wire
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
Application number
US39955407A
Inventor
Conrad J Dorff
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.)
HARVARD ELECTRIC Co
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HARVARD ELECTRIC 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.)
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Publication date
Application filed by HARVARD ELECTRIC Co filed Critical HARVARD ELECTRIC Co
Priority to US39955407A priority Critical patent/US949296A/en
Application granted granted Critical
Publication of US949296A publication Critical patent/US949296A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/046—Fuses formed as printed circuits

Definitions

  • '.lhis invent-ion relates vto that type of 'fusesv 'tor electric circuits in which a supporting strip of insulating material is provided aty its respective ends with terminal bindings, which in turn are connected to* gelber by an attenuated Wire of lead or like material cemented to the insulating strip aforesaid and adapted to fuse under an exross il current and open the circuit; and the object oit' the present :improvementis to provide a simple and eiiicient structural arraugen'ient of ⁇ parts in a fuse. of the type above mentioned, whereby the attenuated and fragile iiuse Wire is protected -troni abrasion and fracture during l'iandling, shipment and use,l all as will hereinafter more 'fully a p pear.
  • Fig. 2 is a longitudinal section at line eu-a Fig. l.
  • Fig. 3 is a transverse section at .line w- Fig. l.
  • draivin'gs:-1 represents the supporting strip ci insulating material, and usually formed of two sheets of mica placed one on the other and bound together' at their ends by w ripping-s 2 of thin sheet copper-'or -the like; such 'wrappiugs constituting the respective terminals of' the t: e y
  • a fuse for electric circuits comprising a thin rectangular and flexible strip ol insulating material formed with a; shallow longitudinal channel, sheet metal terminals wrapped upon the ends of said strip, and
  • a lnse for electric circuits comprising a supporting strip of insulating material, sheet metal terminals on the ends of said strip, and a fuse Wire extending between the terminals, the said strip having a longitudinal channel for the receptioinot said fuse wire and the said terminals having depressed portions fitting said channels and adapted to receive the small masses of solder by which the terminals are electrically connected to the fuse Wire.
  • A. fuse for electric circuits comprising a. supporting strip of insulating materia J sheet metal terminals on the ends of sain ot ctober, 190i.

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  • Fuses (AREA)

Description

C. J. DORFF.
FUSE POR ELECTRIC CIRCUITS.
APPLIOATION FILED 00T. 2a, 1907.
' Patented Fei. 15,-1910.
UNITED STATES FFICE.
CONRAD J'. DORFF, 0F CHICAGO, ILLINOIS, ASSXGIOR EG THE HARVARD ELECTRIC COMPANY, 0F CHICAGOfILLINOlS, A CRPOBATIN 0F ILLINOS.
ross ron unserm@ crncurrs.
Specicatinn oi Letters Patent.
Patented Felt. i5, i910.
To all whom it may concern:
Be yit knownV that. I, CONRAD J. Donrr, a citizen ot the United States of America., and a resident of Chicago, in the county o Cook and State of illinois, have invented certain new and useful improvements in Fuses for Electric Circuits, of which the following is a specification.
'.lhis invent-ion relates vto that type of 'fusesv 'tor electric circuits in which a supporting strip of insulating material is provided aty its respective ends with terminal bindings, which in turn are connected to* gelber by an attenuated Wire of lead or like material cemented to the insulating strip aforesaid and adapted to fuse under an exross il current and open the circuit; and the object oit' the present :improvementis to provide a simple and eiiicient structural arraugen'ient of `parts in a fuse. of the type above mentioned, whereby the attenuated and fragile iiuse Wire is protected -troni abrasion and fracture during l'iandling, shipment and use,l all as will hereinafter more 'fully a p pear.
ln the accompanying drawings :Figure l e front elevation of a fuse embodying the present invention. Fig. 2 is a longitudinal section at line eu-a Fig. l., Fig. 3 is a transverse section at .line w- Fig. l.
Similar numerals of referenceindicate like parts in the ldifferent views.
Referring to the draivin'gs:-1 represents the supporting strip ci insulating material, and usually formed of two sheets of mica placed one on the other and bound together' at their ends by w ripping-s 2 of thin sheet copper-'or -the like; such 'wrappiugs constituting the respective terminals of' the t: e y
provement shown in the drawings, the chender by which a positive conductive connection is effected between the respective ends of the fuse wire and said terminals or Wrappings.
Having thus fully described my said invention, what l cla1m.as new and desire to secure by Letters Patent, isfn l. A fuse for electric circuits, comprising a thin rectangular and flexible strip ol insulating material formed with a; shallow longitudinal channel, sheet metal terminals wrapped upon the ends of said strip, and
longitudinal fuse Wire arranged in said channel and electrically connected at its ends to said terminals, said channel protecting the fuse Wire from abrasion in handling the fuse.`
, 2. A lnse for electric circuits, comprising a supporting strip of insulating material, sheet metal terminals on the ends of said strip, and a fuse Wire extending between the terminals, the said strip having a longitudinal channel for the receptioinot said fuse wire and the said terminals having depressed portions fitting said channels and adapted to receive the small masses of solder by which the terminals are electrically connected to the fuse Wire. e
3. A. fuse for electric circuits, comprising a. supporting strip of insulating materia J sheet metal terminals on the ends of sain ot ctober, 190i.
` CONRAD J. DORFF. W'itnesses ROBERT BURNS, Fuso B. lVEs'rcor'r.
lill)
US39955407A 1907-10-28 1907-10-28 Fuse for electric circuits. Expired - Lifetime US949296A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US39955407A US949296A (en) 1907-10-28 1907-10-28 Fuse for electric circuits.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39955407A US949296A (en) 1907-10-28 1907-10-28 Fuse for electric circuits.

Publications (1)

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US949296A true US949296A (en) 1910-02-15

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US39955407A Expired - Lifetime US949296A (en) 1907-10-28 1907-10-28 Fuse for electric circuits.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3155797A (en) * 1958-10-10 1964-11-03 Avco Corp Destructible fuse elements
US4149137A (en) * 1976-07-08 1979-04-10 Grote & Hartmann Gmbh & Co. Kg Flat safety fuse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3155797A (en) * 1958-10-10 1964-11-03 Avco Corp Destructible fuse elements
US4149137A (en) * 1976-07-08 1979-04-10 Grote & Hartmann Gmbh & Co. Kg Flat safety fuse

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