US1550504A - Renewable electric fuse - Google Patents

Renewable electric fuse Download PDF

Info

Publication number
US1550504A
US1550504A US302517A US30251719A US1550504A US 1550504 A US1550504 A US 1550504A US 302517 A US302517 A US 302517A US 30251719 A US30251719 A US 30251719A US 1550504 A US1550504 A US 1550504A
Authority
US
United States
Prior art keywords
fuse
plug
renewable electric
electric fuse
slot
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
US302517A
Inventor
Jr Sears B Condit
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.)
Condit Electrical Manufacturing Corp
Original Assignee
Condit Electrical Manufacturing Corp
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 Condit Electrical Manufacturing Corp filed Critical Condit Electrical Manufacturing Corp
Priority to US302517A priority Critical patent/US1550504A/en
Application granted granted Critical
Publication of US1550504A publication Critical patent/US1550504A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01H85/05—Component parts thereof
    • H01H85/143—Electrical contacts; Fastening fusible members to such contacts
    • H01H85/157—Ferrule-end contacts

Definitions

  • My invention relates to a renewable electric fuse of the cartridge type and has for its object to provide a fuse of such type having a vent for the expulsion of heated gas formed upon the blowing of the fuse and the cooling of the gas during its expulsion whereby to prevent the discharge of a dangerous flame.
  • Fig. 1 is a side view, partly in section, of a renewable electric fuse .-mbodying my invention.
  • Fig. 2 is an end view of the fuse with the end-plug in place.
  • Fig. 3 is a view of the inner face of the end-plug illustrating the gas passages therein.
  • Fig. 4 is a section along lines 14 of Fig.
  • Fig. 5 is an end view of the fuse with the end-plug removed and illustrating the fusesupporting plate and the fuse-receiving slot therein.
  • my invention is applied to the renewable electric fuse having the enclosing tubular enclosing casing 10 of fibre or other suitable insnlatingmaterial on the ends of which are permanently received the end-ferrules 11 which, at their end-portions, are interiorly-threaded as at 12.
  • Each end ferrule is formed with the in wardly-extended flange 13 against which the end of the enclosing casing is designed to abut and which also serves as an abutment for the fuse-supporting plate.
  • the fuse-supporting plate comprises a disc 14:, usually of copper, of slightly less diameter than the inner diameter of the endferrule whereby it may be removably received therein, and has a non-axial or eccentric slot 15 therethrough extended from the edge thereof beyond and above the center of the disc and terminates near the op- Seri aI No. 302,517.
  • Said slot is adapted to be about midway between the center of the disc and the edge, as illustrated in Fig. 1, and is adapted to receive the fusible element.
  • the fusible element comprises the fuse strip of fusible material extended through the enclosing casing 10 and has its end-portion received in the fuse-receiving slot 15 and the extended end-portion is refiexed over the outer face of said fuse-supporting disc to which it is adapted to be clamped by the end-plug.
  • the slot 15 is adapted to be of greater cross-section than that portion of the fuse received therein whereby it forms a gas vent for the casing.
  • the fuse clamping means comprises a clamping plate or end plug as the relatively thick disc 16, preferably of copper, having a threaded peripheral portion 17 whereby it is removably received in the end-ferrule, and the outer face thereof is provided with a slot 18 in which a screw-driver or other suitable tool is adapted to be received to remove said plug from or secure it to the fuse.
  • An axial opening 19 is extended through said plug and, in the outer face thereof, may be enlarged, as indicated at 20.
  • a slotor gas passage 21 is formed in the inner face of said plug and extends from said opening 19 therein to the periphery of the plug. Said plug is adapted to be screwed against the reflexed end of the fuse strip to thereby secure it in firm electrical engagement with the fuse-supporting plate and consequently with the end-ferrule.
  • the fuse strip is relatively broad and the refiexed end thereof occupies the central portion of the space 22 between the fuse-supporting plate and the end plug whereby said space is roughly in the form of an annular ring closely bounded by said plate and plug with which the fuse eceiving slot 15 communicates.
  • the axial opening 19 in the end-plug is closed by the reflexed end of the fuse strip and the slot or passage 21 in the inner face of said plug 1 V (e 13- in said slot 91 :iin'l "i sa eh"; ooenmn l in Ui' lE l plii zx l1 iasszz i e iilier-etln'oilgli iis eii'eetion of low lS fll' e'elSfil many times; and 5 the gas is brought intimately in eonteet with, relatively eoli'l lembzilisti'zieiiingr heilies whereby iii is cooled and may he expelled from the fuse without flame.
  • 1% is ohvioiis that inmliiiee m'i'm'nt enninls of my invention in which :i tortuous path and anolin means for the oncriish'i may he provided Without (lepziriing from the spirii of my in? ni'ion.
  • renewable electric fuse of the can "g'e type comprising :i tllblllel' enelosii'ig enal i ei'l'sammlungs ez'urieil iihei'ehy, enil loosely received in said end ferrules eccent ic fuse-receiving slots therelihwnp ln 2i use sii'ip erzl'endeil through Sflifl fLiSinQ and. the slots in said plates and. the enns irelexed ever the onl'ei' faces of said plates.

Landscapes

  • Spark Plugs (AREA)

Description

Aug. 18, 1925.
S. B. CONDIT, JR
RENEWABLE ELECTRIC FUSE Filed Juno '7, 1.919
Patented Aug. 18, 1925.
UNITED STATES PATENT OFFICE.
SEAR/S B. CONDIT, JR, OF BROOKLINE, .IVEASSACHUSETTS, ASSIGNOR TO CONDIT ELEC- TRIGAL MANUFACTURING COMPANY, OF SOUTH BOSTON, MASSACHUSETTS, A COR- PORATION OF MASSACHUSETTS.
RENEYVABLE ELECTRIC FUSE.
Application filed June 7, 1919.
To all whom it may concern:
Be it known that 1, Same B Czarnu'r, Clix. a citizen of the United States. and resident of Brookline, in the county of Norfolk and State of Massachusetts, have invented an Improvement in Renewable Electric Fuses, of which the following is a specification.
My invention relates to a renewable electric fuse of the cartridge type and has for its object to provide a fuse of such type having a vent for the expulsion of heated gas formed upon the blowing of the fuse and the cooling of the gas during its expulsion whereby to prevent the discharge of a dangerous flame.
Certain features herein shown but not claimed are shown and claimed in my copending application Serial No. 302,516, filed June 7, 1919.
Fig. 1 is a side view, partly in section, of a renewable electric fuse .-mbodying my invention.
Fig. 2 is an end view of the fuse with the end-plug in place.
Fig. 3 is a view of the inner face of the end-plug illustrating the gas passages therein.
Fig. 4 is a section along lines 14 of Fig.
Fig. 5 is an end view of the fuse with the end-plug removed and illustrating the fusesupporting plate and the fuse-receiving slot therein.
As here shown, my invention is applied to the renewable electric fuse having the enclosing tubular enclosing casing 10 of fibre or other suitable insnlatingmaterial on the ends of which are permanently received the end-ferrules 11 which, at their end-portions, are interiorly-threaded as at 12. Each end ferrule is formed with the in wardly-extended flange 13 against which the end of the enclosing casing is designed to abut and which also serves as an abutment for the fuse-supporting plate.
The fuse-supporting plate comprises a disc 14:, usually of copper, of slightly less diameter than the inner diameter of the endferrule whereby it may be removably received therein, and has a non-axial or eccentric slot 15 therethrough extended from the edge thereof beyond and above the center of the disc and terminates near the op- Seri aI No. 302,517.
posite edge of the disc. Said slot is adapted to be about midway between the center of the disc and the edge, as illustrated in Fig. 1, and is adapted to receive the fusible element.
The fusible element comprises the fuse strip of fusible material extended through the enclosing casing 10 and has its end-portion received in the fuse-receiving slot 15 and the extended end-portion is refiexed over the outer face of said fuse-supporting disc to which it is adapted to be clamped by the end-plug. The slot 15 is adapted to be of greater cross-section than that portion of the fuse received therein whereby it forms a gas vent for the casing.
The fuse clamping means comprises a clamping plate or end plug as the relatively thick disc 16, preferably of copper, having a threaded peripheral portion 17 whereby it is removably received in the end-ferrule, and the outer face thereof is provided with a slot 18 in which a screw-driver or other suitable tool is adapted to be received to remove said plug from or secure it to the fuse.
An axial opening 19 is extended through said plug and, in the outer face thereof, may be enlarged, as indicated at 20. A slotor gas passage 21 is formed in the inner face of said plug and extends from said opening 19 therein to the periphery of the plug. Said plug is adapted to be screwed against the reflexed end of the fuse strip to thereby secure it in firm electrical engagement with the fuse-supporting plate and consequently with the end-ferrule.
It will be noted that the fuse strip is relatively broad and the refiexed end thereof occupies the central portion of the space 22 between the fuse-supporting plate and the end plug whereby said space is roughly in the form of an annular ring closely bounded by said plate and plug with which the fuse eceiving slot 15 communicates. The axial opening 19 in the end-plug is closed by the reflexed end of the fuse strip and the slot or passage 21 in the inner face of said plug 1 V (e 13- in said slot 91 :iin'l "i sa eh"; ooenmn l in Ui' lE l plii zx l1 iasszz i e iilier-etln'oilgli iis eii'eetion of low lS fll' e'elSfil many times; and 5 the gas is brought intimately in eonteet with, relatively eoli'l lembzilisti'zieiiingr heilies whereby iii is cooled and may he expelled from the fuse without flame.
1% is ohvioiis that inmliiiee m'i'm'nt enninls of my invention in which :i tortuous path and anolin means for the oncriish'i may he provided Without (lepziriing from the spirii of my in? ni'ion.
claim:
1. A i'enewehle electric use 01'? the cartriilge type comprising a tubular enclosine inej in eni wh te :17
the casino 'ith hi-"1e ens e'zis opening; fl ei'el'hi strip extended ihiie and a Few! Y-OLl I 1i strip :igeinsi n l-plate said ulznnpmgz Olaijfl heving aerial opening Face therethiong'h the it 1101' enrl 017 is elosed by (he i'efiexeil en-zl o f-iziip and a (LS iessiiee in ilis innei' lei from o1 ling toward The periphery of said plate to provide a vent passage from the fuse,
2. A ienewahle enclose-(l electric film, of
,nl l iisih e iezins, sziii'l enihplng having: an .q ni ;hei'eiihi'ongh lillil a pas? g0 W i'h szii l epeningg extended riiphei'y of viii i plug and consnimih. The space he'tii'een said fuse sup- 3)'7(" and Hg whereby e tortuous l'(' Vi(lQ(l {or the expulsion of gas U. renewable electric fuse of the can "g'e type comprising :i tllblllel' enelosii'ig enal i ei'l'iiles ez'urieil iihei'ehy, enil loosely received in said end ferrules eccent ic fuse-receiving slots therelihwnp ln 2i use sii'ip erzl'endeil through Sflifl fLiSinQ and. the slots in said plates and. the enns irelexed ever the onl'ei' faces of said plates. and pines i'e iovzihl received i th 1 said ferrules engaging the refle ml ends oi? said iuse sli'i said i lii having? :1: .l openings ihei'etln'oiie'h in 1 slots in (heninnei' feces ercl'eniliniay from sa d axial oneliinxzs [to i'heiiJ peripheries to we wide ens vents for the Fuse. 1
in "oesl'imony whereof. I have sigyneil my name to this specification.
SEARS B. CONDIT, J12.
US302517A 1919-06-07 1919-06-07 Renewable electric fuse Expired - Lifetime US1550504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US302517A US1550504A (en) 1919-06-07 1919-06-07 Renewable electric fuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US302517A US1550504A (en) 1919-06-07 1919-06-07 Renewable electric fuse

Publications (1)

Publication Number Publication Date
US1550504A true US1550504A (en) 1925-08-18

Family

ID=23168070

Family Applications (1)

Application Number Title Priority Date Filing Date
US302517A Expired - Lifetime US1550504A (en) 1919-06-07 1919-06-07 Renewable electric fuse

Country Status (1)

Country Link
US (1) US1550504A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294939A (en) * 1965-07-15 1966-12-27 Chance Co Ab Combination expendable cap holder and fuse link retainer for electrical distribution cutout
US4520202A (en) * 1981-12-09 1985-05-28 Bayer Aktiengesellschaft Process for preparing 4,4'-dibenzoylaminodianthrimidecarbazole

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294939A (en) * 1965-07-15 1966-12-27 Chance Co Ab Combination expendable cap holder and fuse link retainer for electrical distribution cutout
US4520202A (en) * 1981-12-09 1985-05-28 Bayer Aktiengesellschaft Process for preparing 4,4'-dibenzoylaminodianthrimidecarbazole

Similar Documents

Publication Publication Date Title
US2300142A (en) Fusible electric protective device
US1550504A (en) Renewable electric fuse
US2343224A (en) Electric circuit-interrupting device
US2834852A (en) Plug-in type power fuses
US2672540A (en) Banded multiple element fuse
US1443886A (en) Fuse
US2296627A (en) Time lag fuse
US3156801A (en) Current limiting fuse unit with casing sealing its terminals
US2846544A (en) Expendable disc cutout
US3740687A (en) Current limiting fuse
US2041590A (en) Fuse
US1290860A (en) Electric fuse.
US2558581A (en) Coordinate fuse and mounting clips
US1353123A (en) Cartridge-fuse
US1506049A (en) Renewable electric fuse
US2220698A (en) Terminal clamp
US2062669A (en) Fuse indicator
US1246417A (en) Inclosed fuse.
US1244589A (en) Inclosed electric fuse.
US1907739A (en) Renewable link cartridge fuse
US2644872A (en) Renewable fuse
US1502883A (en) Refillable fuse
US1265576A (en) Electric cut-out.
JP3196848U (en) Limiter fuse
US1573392A (en) Renewable fuse element