US1377398A - Fuse-cartridge - Google Patents

Fuse-cartridge Download PDF

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Publication number: US1377398A
Authority: US; United States
Prior art keywords: fuse; ribs; divided; insulating member; cartridge
Prior art date: 1918-11-18
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

US262996A

Inventor

George A Conrad

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.)

Individual

Original Assignee

Individual

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.)

1918-11-18

Filing date

1918-11-18

Publication date

1921-05-10

1918-11-18 Application filed by Individual filed Critical Individual

1918-11-18 Priority to US262996A priority Critical patent/US1377398A/en

1919-01-13 Priority to GB89319A priority patent/GB137590A/en

1919-01-30 Priority to FR495378A priority patent/FR495378A/fr

1921-05-10 Application granted granted Critical

1921-05-10 Publication of US1377398A publication Critical patent/US1377398A/en

1938-05-10 Anticipated expiration legal-status Critical

Status 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
- H01H85/05—Component parts thereof
- H01H85/165—Casings
- H01H85/175—Casings characterised by the casing shape or form
- H01H85/1755—Casings characterised by the casing shape or form composite casing
- 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
- H01H85/165—Casings
- H01H85/175—Casings characterised by the casing shape or form
- 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
- H01H85/24—Means for preventing insertion of incorrect fuse

Definitions

My invention relates to a fuse cartridge shown in the accompanying drawings and more particularly described in the following specification and claims. 'f
One of the objects of this invention is to provide a simple and inexpensive fuse cartridge in'which the ⁇ fuse when blown may be easily replaced at a minimum cost.
Another object ofthe invention is to pro- Y vide Va construction adapted to arbitrarily control the maximum cross-sectional area of the fuse strip that maybe inserted in the cartridge, in order that no fuse strip capable of carrying a greater amperagemay be inserted through accident or design than was originally designed forV the installatioiji in which it was employed.
Another object of the invention is to eliminate all screw-caps or other like c'ontrivances employed in devices of this 'character for engaging the ends of the fuse strips to secure them in position within the cartridge.
Another feature lof the invention consists of a divided insulating support for the fuse strip secured together by metal caps ⁇ which engage the respective ends of Vthe divided insulation to grip the fuse strip between the same and also to serve as terminals for lthe ends of the fuse strip.
v Another feature is the construction of the caps themselves, which maybe struck up out of sheet metal with a projecting tongue to adapt theV cartridgeto be gripped between the opposing springs of a fusev board l(not shown).
Figure l is a side elevation of a fuse cartridge embodying my invention.
l Fig. 2 is a longitudinal central sectional View of the same.
Fig.- 3 is a longitudinal sectional View with the end caps removed and the divided insulating portion separated to show the projecting ribs of -one member of the insulating i portion; j
Fig. et is a longitudinal Vcentral sectional view of the fuse cartridge, showing the end capsv provided with a 4projecting tongue to adapt them to be engaged by a fuse board having opposing spring terminals;
Fig. 5 is a cross-sectional view 'through F ig.V 2 to show the projecting ribs of one member of the insulating portion extending into recesses in the other member of the j divided insulating portion,-between which is ,lodged the fuse strip.
Fig. 6 is a fragmentary perspective view showing theconstruction of the end cap disclosed in F ig. l.
Fig. 7 is a modification of the end cap in which the projecting tongue is brazed to the body portion.
Fig. 8 shows a. sheetl metal blank from which the cap shown in 6 is constructed.
Fig.V 9 is a perspective view of one part of the insulating portionY showing afuse strip lodged between the ribs thereof,the endsof the strip being'bent over the end of the insulation in position to receive the end engag ing caps.
afusecartridge comprising a divided insulating portion B, Bf, one'part j of which isfprovlded with projecting ribs C, indicates a fuse strip lodged between the ribs Zi, ,the space between the ribs controlling the maximum width of the fuse strip that may be lodged between them.
the fuse strip is gripped between the ends of the opposing parts of the insulating portion and its projecting ends, bent to overlap the end of the insulation,with a return bend against the outer peri aheral surface of the latter as indicated at 1.
E, E designate metallic caps which engage the ends of the divided insulating portion to bind them together,-the caps serving also as terminals f for the ends of the fuse strip upon which they impinge.
the divided insulating portions B, B are provided at opposite sides of the fuse strip C with recesses 1 and 2 extending longitudinally of the said insulating portions and terminating short of the ends thereof.
the recess l is located between the longitudinal ribs b' and the recess 2 is preferably extended laterally to receive the longitudinal ribs b when the insulating portions are assembled.
the ends of the abutting curved portions 3 of the cap E are designed to be soldered, brazed or otherwise secured together to prevent expansion of the cap.
ribs Z2 of the divided insulating memberl continuous from end to end thereof; they may be of any other preferred construction.
thecross-sectional area of the fuse strip controls the amperage carried thereby ;-it will also be evident that the space between the ribs of the divided insulating member controls the maximum width of the fuse strip which may be inserted theren,-while the end caps which engage the divided insulated member serve also to control the thickness of the fuse strip lodgedV between the latter; It is therefore evident that if the fuse is too thick the caps cannot be placed over the ends of the insulating member and if too wide the fuse strip cannot be lodged between theribs ;-thus a fuse strip cannot be inserted in the cartridge capable of carrying greater amperage than that designed therefor.
the caps E may be formed of sheet metal struck from a blank as indicated in Fig. 8, land may be provided with a projecting tongue E1, adapted to be gripped between the opposing springs of a fuse board (not shown). Instead of forming the tongue El as just described, it may be a separate piece brazed to the body of the capas shown in Fig. 7.
a fuse cartridge comprising an insulating member divided longitudinally withone portion rovided with projecting ribs spaced apart a apted to enter co-acting recesses in the opposing portion of said insulating member, a fuse strip lodged between the spaced ribs and engaging the inner faces and terminals of the same Iand extending beyond the ends of the insulating member, and means adapted to embrace the respective ends of the divided insulating member adapted to bind the parts together to form a single unit and also to serve as terminals for the fuse strip.
a fuse cartridge comprising an insulatingV member divided longitudinally having one portion provided with projecting ribs spaced apart adapted to enter corresponding recesses in the opposing portion of the divided insulating member, a fuse strip located between the ribs and between the opposing portions of the divided insulating member engaging the said ribs at the inner faces and ends of the same and having its ends extending beyond the ends of the latter with a return bend adjacent to its outer peripheral surface, and a pair of annular caps adapted to embrace the ends of said divided insulating member to bindthe parts together and to serve as terminals for the ends of the fuse strip.
a fuse cartridge comprising an insulating member divided longitudinally having one portion provided with projecting ribs spaced apart adapted to enter corresponding recesses in the opposing portions of the divided insulating member, a fuse strip located between the ribs and between the opposing portions of the divided insulating member and engaging the said ribs at the inner faces and terminals of the same and having its ends extending beyond the ends of the latter'with a return bend adjacent to its outer peripheral surface, said insulating member being provided at opposite faces of ⁇ the fuse strip with longitudinal recesses and a pair of annular caps adapted to embrace the ends of said divided insulating member to bind the parts together, said caps provided with a projecting tongue, adapted to be engaged by the opposing springs of a fuse board.
fuse cartridge comprising an insulating member divided longitudinally, a fuse strip located between said divided portions with its ends extending beyond the respective ends of the latter, and means for bind- Ving said divided portions together to form asingle unit and to form terminals for the fuse strip, consisting of a member formed of sheet metal shaped to form an annular band surrounding the end of the insulating member with a strip bridging said band across the end of ⁇ said member.
a fuse cartridge comprising a longitudinallyV divided insulating member, one of the portions of the insulating member being provided with spaced longitudinal ribs and having a central longitudinal recess between the ribs and the other portion of the insulating member Vbeing provided with a longitudinal recess receiving the said ribs, a fuse strip located between the portions of the insulating member and extending between the ribs, the recesses of the said portions of the insulating member forming' divided portions ofthe insulating member together to form a single unit.

Description

G. AA CONRAD.

FUSE CARTRIDGE.

APPLICATION' FILED NOV. I8. i918 UNITED STATES PATENT OFFICE.

GEORGE A. CONRAD,'OF DETROIT, MICHIGAN.

T 0 all whom t may concern.

Be it `known that I, GEORGE A. CONRAD, citizen -of the United States, residing at Detroit, county of Vayne, State of Michivan, haveinvented `a certain new and useful mprovement in Fuse-Cartridges, and de- Clare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the Vart to whichV it pertains to make and use thesame, reference being had tothe accompanying drawings, which form a part of this specification.

My invention relates to a fuse cartridge shown in the accompanying drawings and more particularly described in the following specification and claims. 'f One of the objects of this invention is to provide a simple and inexpensive fuse cartridge in'which the `fuse when blown may be easily replaced at a minimum cost.

Another object ofthe invention is to pro- Y vide Va construction adapted to arbitrarily control the maximum cross-sectional area of the fuse strip that maybe inserted in the cartridge, in order that no fuse strip capable of carrying a greater amperagemay be inserted through accident or design than was originally designed forV the installatioiji in which it was employed.

Another object of the invention is to eliminate all screw-caps or other like c'ontrivances employed in devices of this 'character for engaging the ends of the fuse strips to secure them in position within the cartridge. l Another feature lof the invention consists of a divided insulating support for the fuse strip secured together by metal caps `which engage the respective ends of Vthe divided insulation to grip the fuse strip between the same and also to serve as terminals for lthe ends of the fuse strip. v Another feature is the construction of the caps themselves, which maybe struck up out of sheet metal with a projecting tongue to adapt theV cartridgeto be gripped between the opposing springs of a fusev board l(not shown). j f With the foregoing and other l,objects in view, which will appear as the description proceeds', the invention resides Ainthe combination and arrangement of parts and in FUsEGARTRIDGE.

Specification of'Letter'sPatent. Patented May 10, 1921, Application led November 18, 19187. Serial No. 262,996. y

the details of construction hereinafter described and claimed, it being understood that changes may be made in the precise embodiment of the invention'herein described without departing from the spirit of the same.

In the drawings accompanying this specification:

Figure l is a side elevation of a fuse cartridge embodying my invention. l Fig. 2 is a longitudinal central sectional View of the same. j

Fig.- 3 is a longitudinal sectional View with the end caps removed and the divided insulating portion separated to show the projecting ribs of -one member of the insulating i portion; j

Fig. et is a longitudinal Vcentral sectional view of the fuse cartridge, showing the end capsv provided with a 4projecting tongue to adapt them to be engaged by a fuse board having opposing spring terminals;

Fig. 5 is a cross-sectional view 'through F ig.V 2 to show the projecting ribs of one member of the insulating portion extending into recesses in the other member of the j divided insulating portion,-between which is ,lodged the fuse strip.

Fig. 6 is a fragmentary perspective view showing theconstruction of the end cap disclosed in F ig. l. Fig. 7 is a modification of the end cap in which the projecting tongue is brazed to the body portion. i

Fig. 8 shows a. sheetl metal blank from which the cap shown in 6 is constructed.`

Fig.V 9 is a perspective view of one part of the insulating portionY showing afuse strip lodged between the ribs thereof,the endsof the strip being'bent over the end of the insulation in position to receive the end engag ing caps.

Referringv now to the lettersof reference placed upon the drawings f A, denotes afusecartridge, comprising a divided insulating portion B, Bf, one'part j of which isfprovlded with projecting ribs C, indicates a fuse strip lodged between the ribs Zi, ,the space between the ribs controlling the maximum width of the fuse strip that may be lodged between them. The fuse strip is gripped between the ends of the opposing parts of the insulating portion and its projecting ends, bent to overlap the end of the insulation,with a return bend against the outer peri aheral surface of the latter as indicated at 1. E, E, designate metallic caps which engage the ends of the divided insulating portion to bind them together,-the caps serving also as terminals f for the ends of the fuse strip upon which they impinge. The divided insulating portions B, B are provided at opposite sides of the fuse strip C with recesses 1 and 2 extending longitudinally of the said insulating portions and terminating short of the ends thereof. The recess l is located between the longitudinal ribs b' and the recess 2 is preferably extended laterally to receive the longitudinal ribs b when the insulating portions are assembled. The ends of the abutting curved portions 3 of the cap E are designed to be soldered, brazed or otherwise secured together to prevent expansion of the cap.

Instead of constructing the ribs Z2, of the divided insulating memberl continuous from end to end thereof; they may be of any other preferred construction.

It will be understood that thecross-sectional area of the fuse strip controls the amperage carried thereby ;-it will also be evident that the space between the ribs of the divided insulating member controls the maximum width of the fuse strip which may be inserted theren,-while the end caps which engage the divided insulated member serve also to control the thickness of the fuse strip lodgedV between the latter; It is therefore evident that if the fuse is too thick the caps cannot be placed over the ends of the insulating member and if too wide the fuse strip cannot be lodged between theribs ;-thus a fuse strip cannot be inserted in the cartridge capable of carrying greater amperage than that designed therefor.

As shown in VF igs. 4 and 6 the caps E may be formed of sheet metal struck from a blank as indicated in Fig. 8, land may be provided with a projecting tongue E1, adapted to be gripped between the opposing springs of a fuse board (not shown). Instead of forming the tongue El as just described, it may be a separate piece brazed to the body of the capas shown in Fig. 7.

aving thus described my invention, what I claim is: l

l; A fuse cartridge comprising an insulating member divided longitudinally withone portion rovided with projecting ribs spaced apart a apted to enter co-acting recesses in the opposing portion of said insulating member, a fuse strip lodged between the spaced ribs and engaging the inner faces and terminals of the same Iand extending beyond the ends of the insulating member, and means adapted to embrace the respective ends of the divided insulating member adapted to bind the parts together to form a single unit and also to serve as terminals for the fuse strip.

2. A fuse cartridge comprising an insulatingV member divided longitudinally having one portion provided with projecting ribs spaced apart adapted to enter corresponding recesses in the opposing portion of the divided insulating member, a fuse strip located between the ribs and between the opposing portions of the divided insulating member engaging the said ribs at the inner faces and ends of the same and having its ends extending beyond the ends of the latter with a return bend adjacent to its outer peripheral surface, and a pair of annular caps adapted to embrace the ends of said divided insulating member to bindthe parts together and to serve as terminals for the ends of the fuse strip.

3. A fuse cartridge comprising an insulating member divided longitudinally having one portion provided with projecting ribs spaced apart adapted to enter corresponding recesses in the opposing portions of the divided insulating member, a fuse strip located between the ribs and between the opposing portions of the divided insulating member and engaging the said ribs at the inner faces and terminals of the same and having its ends extending beyond the ends of the latter'with a return bend adjacent to its outer peripheral surface, said insulating member being provided at opposite faces of` the fuse strip with longitudinal recesses and a pair of annular caps adapted to embrace the ends of said divided insulating member to bind the parts together, said caps provided with a projecting tongue, adapted to be engaged by the opposing springs of a fuse board.

4. fuse cartridge comprising an insulating member divided longitudinally, a fuse strip located between said divided portions with its ends extending beyond the respective ends of the latter, and means for bind- Ving said divided portions together to form asingle unit and to form terminals for the fuse strip, consisting of a member formed of sheet metal shaped to form an annular band surrounding the end of the insulating member with a strip bridging said band across the end of `said member.

5. A fuse cartridge comprising a longitudinallyV divided insulating member, one of the portions of the insulating member being provided with spaced longitudinal ribs and having a central longitudinal recess between the ribs and the other portion of the insulating member Vbeing provided with a longitudinal recess receiving the said ribs, a fuse strip located between the portions of the insulating member and extending between the ribs, the recesses of the said portions of the insulating member forming' divided portions ofthe insulating member together to form a single unit.

In testimony whereof I sign this specification in the presence of two witnesses.

' GEORGE A. CONRAD. Witnesses:

EDWIN R. MONNIG, S. E. THOMAS.

US262996A 1918-11-18 1918-11-18 Fuse-cartridge Expired - Lifetime US1377398A (en)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
US262996A US1377398A (en)	1918-11-18	1918-11-18	Fuse-cartridge
GB89319A GB137590A (en)	1918-11-18	1919-01-13	Improvements in and relating to electric fuse cartridges
FR495378A FR495378A (en)	1918-11-18	1919-01-30

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US262996A US1377398A (en)	1918-11-18	1918-11-18	Fuse-cartridge

Publications (1)

Publication Number	Publication Date
US1377398A true US1377398A (en)	1921-05-10

Family

ID=22999943

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US262996A Expired - Lifetime US1377398A (en)	1918-11-18	1918-11-18	Fuse-cartridge

Country Status (2)

Country	Link
US (1)	US1377398A (en)
FR (1)	FR495378A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3713064A (en) *	1971-11-03	1973-01-23	Chase Shawmut Co	Current-limiting polyphase fuse
US3766507A (en) *	1971-11-03	1973-10-16	Chase Shawmut Co	Low-voltage fuse having molded case
EP0370572A1 (en) *	1988-11-21	1990-05-30	Littelfuse B.V.	Fuse
US5153553A (en) *	1991-11-08	1992-10-06	Illinois Tool Works, Inc.	Fuse structure
US20020113684A1 (en) *	2001-02-16	2002-08-22	Hiroo Arikawa	Miniature fuse of surface-mount type
US20060119465A1 (en) *	2004-12-03	2006-06-08	Dietsch G T	Fuse with expanding solder
US20070132539A1 (en) *	2005-06-02	2007-06-14	Wickmann-Werke Gmbh	Fusible spiral conductor for a fuse component with a plastic seal
US20070236323A1 (en) *	2004-02-21	2007-10-11	Wickmann-Werke Gmbh	Fusible Conductive Coil with an Insulating Intermediate Coil for Fuse Element
US9117615B2 (en)	2010-05-17	2015-08-25	Littlefuse, Inc.	Double wound fusible element and associated fuse

1918
- 1918-11-18 US US262996A patent/US1377398A/en not_active Expired - Lifetime
1919
- 1919-01-30 FR FR495378A patent/FR495378A/fr not_active Expired

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3713064A (en) *	1971-11-03	1973-01-23	Chase Shawmut Co	Current-limiting polyphase fuse
US3766507A (en) *	1971-11-03	1973-10-16	Chase Shawmut Co	Low-voltage fuse having molded case
EP0370572A1 (en) *	1988-11-21	1990-05-30	Littelfuse B.V.	Fuse
US5130688A (en) *	1988-11-21	1992-07-14	Littlefuse Tracor B.V.	Fuse
US5153553A (en) *	1991-11-08	1992-10-06	Illinois Tool Works, Inc.	Fuse structure
US20020113684A1 (en) *	2001-02-16	2002-08-22	Hiroo Arikawa	Miniature fuse of surface-mount type
US6798330B2 (en) *	2001-02-16	2004-09-28	Soc Corporation	Miniature fuse of surface-mount type
US20070236323A1 (en) *	2004-02-21	2007-10-11	Wickmann-Werke Gmbh	Fusible Conductive Coil with an Insulating Intermediate Coil for Fuse Element
US20060119465A1 (en) *	2004-12-03	2006-06-08	Dietsch G T	Fuse with expanding solder
US20070132539A1 (en) *	2005-06-02	2007-06-14	Wickmann-Werke Gmbh	Fusible spiral conductor for a fuse component with a plastic seal
US9117615B2 (en)	2010-05-17	2015-08-25	Littlefuse, Inc.	Double wound fusible element and associated fuse

Also Published As

Publication number	Publication date
FR495378A (en)	1919-01-30

Publication	Publication Date	Title
US1377398A (en)	1921-05-10	Fuse-cartridge
US909742A (en)	1909-01-12	Switch.
US2249977A (en)	1941-07-22	Electrical connection means
US1291933A (en)	1919-01-21	Electrical-circuit-closing contact.
US3263804A (en)	1966-08-02	Key chain attachment
US1779946A (en)	1930-10-28	Battery-condition indicator
US1120226A (en)	1914-12-08	Electric fuse.
US1920357A (en)	1933-08-01	Heat exchange device
US1399942A (en)	1921-12-13	Boiler staybolt construction
US1212260A (en)	1917-01-16	Thermostat.
US1874949A (en)	1932-08-30	Fuse
US797324A (en)	1905-08-15	Safety-fuse.
US975261A (en)	1910-11-08	Safety-fuse.
US925539A (en)	1909-06-22	Fuse-plug.
US1265223A (en)	1918-05-07	Electric fuse.
US1155514A (en)	1915-10-05	Spark-plug.
US1278322A (en)	1918-09-10	Inclosed safety-fuse.
US1163372A (en)	1915-12-07	Spring fastening device.
US700147A (en)	1902-05-13	Sparking plug.
US1378329A (en)	1921-05-17	Fuse
US1022329A (en)	1912-04-02	Fuse.
US1053606A (en)	1913-02-18	Fuse.
US1154201A (en)	1915-09-21	Spark-plug connector.
US1103777A (en)	1914-07-14	Multiple-fuse plug.
US873846A (en)	1907-12-17	Cartridge-fuse attachment-plug.