US2816193A - Fuse holder - Google Patents

Fuse holder Download PDF

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Publication number
US2816193A
US2816193A US484411A US48441155A US2816193A US 2816193 A US2816193 A US 2816193A US 484411 A US484411 A US 484411A US 48441155 A US48441155 A US 48441155A US 2816193 A US2816193 A US 2816193A
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United States
Prior art keywords
fuse
contact
housing
holder
bosses
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Expired - Lifetime
Application number
US484411A
Inventor
Orie E Pine
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Midwest Manuf Corp
Original Assignee
Midwest Manuf Corp
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Publication date
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Priority to US484411A priority Critical patent/US2816193A/en
Application granted granted Critical
Publication of US2816193A publication Critical patent/US2816193A/en
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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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
    • H01R4/2425—Flat plates, e.g. multi-layered flat plates
    • H01R4/2429—Flat plates, e.g. multi-layered flat plates mounted in an insulating base
    • 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
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5844—Electric connections to or between contacts; Terminals making use of wire-gripping clips or springs
    • H01H1/585—Electric connections to or between contacts; Terminals making use of wire-gripping clips or springs and piercing the wire insulation

Definitions

  • Another object of the invention is to provide a fuse .holder where the fuse being renewed may be inserted Withf.
  • .Another .object of the invention is to provide a fuse 1 holder which .is simple, economical to manufacture and easy to service.
  • the Yend walls 11 are provided with pairs of openings 33 which are opposite to the apex of the V notches in the .arms of the ⁇ contact member.
  • the contact member is made of a flexible metallic material, such as copper or beryllium copper, having suitable inherent resiliency.
  • .insulated conductors 35 are inserted through the openings 33 and when so inserted the contact strip .iiexesinward away from the wall, as shown by the dotted lines in Fig. 1, to such an extent that the walls dening the V notch 27 may engage with the periphery of the insulation.
  • connection can be quickly rnade by simply shoving the .end of the conductor through one of the holes 33 as far as it will go until it hits the center abutment 15 and then pulling it outward a slight distance.
  • Ventilating holes .36 may be .provided in the v wall ofthehousingnear thebase.
  • ⁇ of the .invention is to provide a fuse l holder anda .receptacle therefor where connections to the wires in the electrical circuit maybe made without the useof tools.
  • Another object of the invention is to provide a fuse holder which is compact.
  • Fig 2 is .a view with the cover removed and looking 4finto the housing of the holder of my. invention
  • Fig. 7 is a plan :View Vof -the fuse holder with a fuse I, .inV4 position prior to assembly;
  • Figi 8 is an elevational view of a contact member; and Fig. 9 is a plan view of the outer surface of the holder.
  • my invention comprises a receptacle having contact making strips at its ends adapted to make contact with wire conductors and a fuse holder and cover, which carries the fuse and brings it into contact with the contact strips when it is forced into position.
  • the housing comprises an open ended box of rectangular formation having end walls 11 and side walls 12 which extend at right angles from a base 13 that may be integral with the walls.
  • a rectangular boss 15 Centrally of the base there is provided a rectangular boss 15 having a cir* cular central opening 16 for receiving the head of a screw 17, which may seat in the bottom of the opening 16 and extend through a hole 18 and be threaded into a support 19.
  • positioning lugs 2l may be provided for engagement in suitable recesses in the support.
  • the end walls 11 each have secured thereto a contact member which, as is best shown in Fig. 8, may comprise a body 21 having a central aperture 22 enabling it to be secured to the end walls by rivets 23. Extending from the aperture 22 to the end of the member are a pair of arms or legs 25 which are separated by a slit 26 that eX- tends into the aperture. Each of the arms is provided with a V-'shaped notch 27 in its end. The tips of the arms may bend inward slightly, as can be seen in Fig. l.
  • the fuse holder comprises a cap ,portion v4.0 from which there extends upwardly a pair of rectangular bosses 41 .connected by ,ashallow neck 42.
  • the periphery of the bosses .41 and the neck 42 are of rectangular formation with the sides providinga close lit with :the side walls 12 ,of the housing.
  • Each .ofthe Ybosses 41 is provided with .a .transversely extending groove 4.3 spaced from the cap Yand .extending in a horizontal direction, :as viewed in
  • Each of the bosses is also provided with .an upper p orftion 44 slightly shorter in .length than the supporting bosses 41 and through which is formed a longitudinally .extending slot 45 .extending across .the boss for .approxi- .each other .andare of a width .approximately that of the .thickness of the fuse element to. be used, but slightly larger, to permit easy insertion of the fuse elementand of a depth Vconsiderably greater than the width of the fuse element.
  • the fuse element as shown in Fig. 6, consists of a center fus-able portion 47 anked by a pair of enlargements 48 which are connected to enlarged ends 49 by short necks 50. It will be appreciated that the width of the center 47 for a given thickness of fuse element determines the current carrying capacity.
  • the outer face of the cap is provided with undercut portions 55 extending into the cap from opposite sides and providing a strip 56 in the center of the cap which serves as a handle which may be engaged for removing the same.
  • the fuse element as can best be seen in Fig. 7, is inserted in the slots 45.
  • the enlarged portions 48 are disposed in the slots and the fusible portion 47 is suspended in mid-air between the bosses 41.
  • the necks 5t which obviously must be larger than the blowable portion 47 in order to insure that it will carry the maximum lamount of current intended, are disposed approximately opposite the ends of the bosses 41 and provide a weakened portion which enables the enlarged ends 49 to be bent downward alongside the ends of the bosses 41, at which time they extend over the grooves 43. In other words, the fuse element is shoved into the slots 45 and bent down at the ends over the grooves.
  • a fuse holder unit comprising a housing having opposite end walls, contact strips secured to said end walls being provided With transverse ribs and resilient arms having V-shaped notches, said housing being formed with apertures opposite said notches through which an insulated wire may be passed to move said arms away from the housing and engage the wire in said notches, a fuse holder releasably secured within said housing comprising a cap member having fuse holding means arranged to extend into said housing, said means being formed with transversely extending grooves disposed opposite to the ribs on said contact strips, a fuse carried by said fuse holding means and having portions disposed over said grooves and resiliently engaged by said transverse ribs on said contact strips whereby said portions are deformed into said grooves.
  • a fuse holder unit comprising a rectangular housing having vertically extending side and end walls and an open face, Contact strips secured to the end walls and arranged to be engaged with a conductor, said strips eX- tending from near the bottom of the housing to the open face thereof and being provided with transverse ribs spaced from the open face of the housing, a fuse holder releasably secured within said housing comprising a cap adapted to overlie the edges of the housing defining said open face and formed with a pair of spaced bosses thereon arranged to extend within the housing, said bosses being provided with longitudinally aligned slots for the reception of a fuse therein and being formed with transversely extending grooves disposed opposite to the ribs on said Contact strip, fuse means disposed in said longitudinally aligned slots extending toward the ends thereof and over said grooves and arranged to be deformed into the grooves by contact with said ribs on said contact strips, said fuse having a central blowable portion disposed between the bosses and enlarged portions disposed
  • An article of the class described including a wall having openings therein, a flexible contact member secured to the wall spaced from said openings, said member being formed with flexible legs each having a V-shaped notch in ⁇ the end thereof with the material defining the notch partially overlying one of said openings, said member ⁇ being arranged to be pushed away from the openings by aconductor a suicient distance for the conductor to engage in said notch and the edges of said notch being arranged to penetrate the wall of the conductor and make contact with the wire when the conductor is pulled outward of ythe opening, said member being provided with a rib spaced from its connection to the Wall and opposite from said legs and arranged for engagement with a fuse.

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  • Fuses (AREA)

Description

Dec. 10, 1957 o. E. PINE 2,816,193
FUSE HOLDER Filed Jan. 27, 1955 fd f FUSE HOLDER 0l-ie yE.f1ine, Galesburg, Ill., assigner to Midwest Manu-v `iacturing Corporation, Galesburg, Ill., a corporation of lIllinois v "Ibis invention relates to'improvements in fuses for the United States Patentk O Anobject of the invention -is to provide a Vfuse holder .where .the fuse may be replaced without the use of tools.
Another object of the invention is to provide a fuse .holder where the fuse being renewed may be inserted Withf.
yout any dangerof contact with an electrical circuit.
.Another .object of the invention is to provide a fuse 1 holder which .is simple, economical to manufacture and easy to service.
2,816,193 Patented Dec. 10, 1957 rice ber and which is preferably made by deforming the mem- `ber at .this point.
The Yend walls 11 are provided with pairs of openings 33 which are opposite to the apex of the V notches in the .arms of the `contact member. The contact member is made of a flexible metallic material, such as copper or beryllium copper, having suitable inherent resiliency. In 1operation,.insulated conductors 35 are inserted through the openings 33 and when so inserted the contact strip .iiexesinward away from the wall, as shown by the dotted lines in Fig. 1, to such an extent that the walls dening the V notch 27 may engage with the periphery of the insulation. Then, after the notch is in engagement with .the periphery of the conductor it :is pulled backward outwardly of the housing to the position as shown by the full lines, in Fig. 1, at which time -the edges of the member .defining the notch 27 .penetrate the insulation and make good contact with the wire conductor itself. Thus .a ,connection can be quickly rnade by simply shoving the .end of the conductor through one of the holes 33 as far as it will go until it hits the center abutment 15 and then pulling it outward a slight distance.
lf'desired, Ventilating holes .36 may be .provided in the v wall ofthehousingnear thebase.
.Another object `of the .invention is to provide a fuse l holder anda .receptacle therefor where connections to the wires in the electrical circuit maybe made without the useof tools. y
Another object of the invention is to provide a fuse holder which is compact.
vlIn .the drawings:
.T1-lig. l .is a vertical medial sectional view of my invenl )Fig 2 is .a view with the cover removed and looking 4finto the housing of the holder of my. invention;
Fig. 7 is a plan :View Vof -the fuse holder with a fuse I, .inV4 position prior to assembly;
l"Figi 8 is an elevational view of a contact member; and Fig. 9 is a plan view of the outer surface of the holder. Briefly, my invention comprises a receptacle having contact making strips at its ends adapted to make contact with wire conductors and a fuse holder and cover, which carries the fuse and brings it into contact with the contact strips when it is forced into position.
More particularly the housing comprises an open ended box of rectangular formation having end walls 11 and side walls 12 which extend at right angles from a base 13 that may be integral with the walls. Centrally of the base there is provided a rectangular boss 15 having a cir* cular central opening 16 for receiving the head of a screw 17, which may seat in the bottom of the opening 16 and extend through a hole 18 and be threaded into a support 19. If desired, positioning lugs 2l) may be provided for engagement in suitable recesses in the support.
The end walls 11 each have secured thereto a contact member which, as is best shown in Fig. 8, may comprise a body 21 having a central aperture 22 enabling it to be secured to the end walls by rivets 23. Extending from the aperture 22 to the end of the member are a pair of arms or legs 25 which are separated by a slit 26 that eX- tends into the aperture. Each of the arms is provided with a V-'shaped notch 27 in its end. The tips of the arms may bend inward slightly, as can be seen in Fig. l. Spaced from the end of the contact member there is formed a rib which extends transversely of the mem- The fuse holder comprisesa cap ,portion v4.0 from which there extends upwardly a pair of rectangular bosses 41 .connected by ,ashallow neck 42. The periphery of the bosses .41 and the neck 42 are of rectangular formation with the sides providinga close lit with :the side walls 12 ,of the housing. Each .ofthe Ybosses 41 is provided with .a .transversely extending groove 4.3 spaced from the cap Yand .extending in a horizontal direction, :as viewed in Each of the bosses is also provided with .an upper p orftion 44 slightly shorter in .length than the supporting bosses 41 and through which is formed a longitudinally .extending slot 45 .extending across .the boss for .approxi- .each other .andare of a width .approximately that of the .thickness of the fuse element to. be used, but slightly larger, to permit easy insertion of the fuse elementand of a depth Vconsiderably greater than the width of the fuse element.
The fuse element, as shown in Fig. 6, consists of a center fus-able portion 47 anked by a pair of enlargements 48 which are connected to enlarged ends 49 by short necks 50. It will be appreciated that the width of the center 47 for a given thickness of fuse element determines the current carrying capacity.
The outer face of the cap is provided with undercut portions 55 extending into the cap from opposite sides and providing a strip 56 in the center of the cap which serves as a handle which may be engaged for removing the same.
The fuse element, as can best be seen in Fig. 7, is inserted in the slots 45. In this position the enlarged portions 48 are disposed in the slots and the fusible portion 47 is suspended in mid-air between the bosses 41. The necks 5t), which obviously must be larger than the blowable portion 47 in order to insure that it will carry the maximum lamount of current intended, are disposed approximately opposite the ends of the bosses 41 and provide a weakened portion which enables the enlarged ends 49 to be bent downward alongside the ends of the bosses 41, at which time they extend over the grooves 43. In other words, the fuse element is shoved into the slots 45 and bent down at the ends over the grooves. It should be noted that this is the only act necessary for the installation of the fuse element and that it is performed completely away from the contacts so that no danger of shock will be encountered. When the fuse element is installed in the holder in the manner described, the holder is then forced into position in the main housing. This carries the ends 49 over the ribs 30 on the contacts, and, when in position, the ribs 30 depress the portions of the part 49 into the grooves 43 on the bosses. This performs the dual function of holding the cap and its fuse in place and making a good electrical` contact with the fuse and the end contact plates.
When the fuse breaks down it is merely necessary to grasp the handle 56 and pull the cap out of the housing, after which the burned fuse parts maybe removed and a new one installed. Because of the depth of the slot 45 it will be appreciated that wider fuses may be used, or, when not available, two narrow fuses may be used juxtaposed to each other.
It will therefore be apparent that I have provided a fuse assembly that may be quickly connected into a circuit without any special tools and Where the fuse may be renewed quickly, easily and economically.
Having thus described my invention it will be appreciated that the structure shown in the drawings has been selected largely for the purpose of illustration, and that various changes in the parts may be made without departing from the spirit or scope of the invention as is defined in the appended claims.
I claim:
1. A fuse holder unit comprising a housing having opposite end walls, contact strips secured to said end walls being provided With transverse ribs and resilient arms having V-shaped notches, said housing being formed with apertures opposite said notches through which an insulated wire may be passed to move said arms away from the housing and engage the wire in said notches, a fuse holder releasably secured within said housing comprising a cap member having fuse holding means arranged to extend into said housing, said means being formed with transversely extending grooves disposed opposite to the ribs on said contact strips, a fuse carried by said fuse holding means and having portions disposed over said grooves and resiliently engaged by said transverse ribs on said contact strips whereby said portions are deformed into said grooves.
2. A fuse holder unit comprising a rectangular housing having vertically extending side and end walls and an open face, Contact strips secured to the end walls and arranged to be engaged with a conductor, said strips eX- tending from near the bottom of the housing to the open face thereof and being provided with transverse ribs spaced from the open face of the housing, a fuse holder releasably secured within said housing comprising a cap adapted to overlie the edges of the housing defining said open face and formed with a pair of spaced bosses thereon arranged to extend within the housing, said bosses being provided with longitudinally aligned slots for the reception of a fuse therein and being formed with transversely extending grooves disposed opposite to the ribs on said Contact strip, fuse means disposed in said longitudinally aligned slots extending toward the ends thereof and over said grooves and arranged to be deformed into the grooves by contact with said ribs on said contact strips, said fuse having a central blowable portion disposed between the bosses and enlarged portions disposed in the bosses and an easily bendable portion spaced from the rib contact ends thereof and disposed opposite to the corners of the bosses.
3. An article of the class described including a wall having openings therein, a flexible contact member secured to the wall spaced from said openings, said member being formed with flexible legs each having a V-shaped notch in `the end thereof with the material defining the notch partially overlying one of said openings, said member `being arranged to be pushed away from the openings by aconductor a suicient distance for the conductor to engage in said notch and the edges of said notch being arranged to penetrate the wall of the conductor and make contact with the wire when the conductor is pulled outward of ythe opening, said member being provided with a rib spaced from its connection to the Wall and opposite from said legs and arranged for engagement with a fuse.
References Cited in the le of this patent UNITED STATES PATENTS 357,550 Chase Feb. 8, 1887 598,106 Lowe Feb. 1, 1898 1,270,335 Schweitzer et al June 25, 1918 1,952,279 Peterson Mar. 27, 1934 2,333,266 Miller Nov. 2, 1943 2,583,530 Hasselbohm Jan. 29, 1952 2,723,327 Gilbert Nov. 8, 1955 2,725,544 Strange Nov. 29, 1955 2,748,363 Despard May 29, 1956 FOREIGN PATENTS 635,943 Great Britain Apr. 19, 1950
US484411A 1955-01-27 1955-01-27 Fuse holder Expired - Lifetime US2816193A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152851A (en) * 1963-04-12 1964-10-13 Westinghouse Electric Corp Wiring device and wire release arrangement therefor
US3201745A (en) * 1962-07-27 1965-08-17 Burndy Corp Angular contact connector
US3813535A (en) * 1973-04-02 1974-05-28 Reflect O Lite Mfg Co Light fixture for vehicles
US4141617A (en) * 1977-11-21 1979-02-27 Unarco Industries, Inc. Light fixture
US4988313A (en) * 1989-10-16 1991-01-29 Castlebury Gerald E Fuse holder device
EP0621622A1 (en) * 1993-04-20 1994-10-26 Vossloh Schwabe GmbH Fuse holder
US20090017699A1 (en) * 2007-07-09 2009-01-15 Breen Iv Dennis M In-line push-in wire connector
US20090091218A1 (en) * 2007-04-04 2009-04-09 Panasonic Corporation Temperature protection device for brushless dc motor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US357550A (en) * 1887-02-08 chase
US598106A (en) * 1898-02-01 Ernest a
US1270335A (en) * 1914-12-17 1918-06-25 Edmund O Schweitzer Fuse device.
US1952279A (en) * 1931-12-28 1934-03-27 Peter W Peterson Fuse plug for electric light switch boxes
US2333266A (en) * 1941-06-30 1943-11-02 James B Miller Emergency wire connector
GB635943A (en) * 1946-10-11 1950-04-19 Ericsson Telefon Ab L M Improvements in or relating to methods of making electrical connections
US2583530A (en) * 1947-01-30 1952-01-29 Ericsson Telefon Ab L M Electrical connecting terminal strap
US2723327A (en) * 1950-12-26 1955-11-08 Gilbert Margaret Doris Line cord switch
US2725544A (en) * 1951-12-18 1955-11-29 Tinnerman Products Inc Electrical terminal clip
US2748363A (en) * 1954-06-25 1956-05-29 Pass & Seymour Inc Push-in type terminal unit for lamp receptacles

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US357550A (en) * 1887-02-08 chase
US598106A (en) * 1898-02-01 Ernest a
US1270335A (en) * 1914-12-17 1918-06-25 Edmund O Schweitzer Fuse device.
US1952279A (en) * 1931-12-28 1934-03-27 Peter W Peterson Fuse plug for electric light switch boxes
US2333266A (en) * 1941-06-30 1943-11-02 James B Miller Emergency wire connector
GB635943A (en) * 1946-10-11 1950-04-19 Ericsson Telefon Ab L M Improvements in or relating to methods of making electrical connections
US2583530A (en) * 1947-01-30 1952-01-29 Ericsson Telefon Ab L M Electrical connecting terminal strap
US2723327A (en) * 1950-12-26 1955-11-08 Gilbert Margaret Doris Line cord switch
US2725544A (en) * 1951-12-18 1955-11-29 Tinnerman Products Inc Electrical terminal clip
US2748363A (en) * 1954-06-25 1956-05-29 Pass & Seymour Inc Push-in type terminal unit for lamp receptacles

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201745A (en) * 1962-07-27 1965-08-17 Burndy Corp Angular contact connector
US3152851A (en) * 1963-04-12 1964-10-13 Westinghouse Electric Corp Wiring device and wire release arrangement therefor
US3813535A (en) * 1973-04-02 1974-05-28 Reflect O Lite Mfg Co Light fixture for vehicles
US4141617A (en) * 1977-11-21 1979-02-27 Unarco Industries, Inc. Light fixture
US4988313A (en) * 1989-10-16 1991-01-29 Castlebury Gerald E Fuse holder device
EP0621622A1 (en) * 1993-04-20 1994-10-26 Vossloh Schwabe GmbH Fuse holder
US20090091218A1 (en) * 2007-04-04 2009-04-09 Panasonic Corporation Temperature protection device for brushless dc motor
US8188627B2 (en) * 2007-04-04 2012-05-29 Panasonic Corporation Temperature protection device for brushless DC motor
US20090017699A1 (en) * 2007-07-09 2009-01-15 Breen Iv Dennis M In-line push-in wire connector
US20090215326A1 (en) * 2007-07-09 2009-08-27 Ideal Industries, Inc. In-Line Push-In Wire Connector
US7722384B2 (en) 2007-07-09 2010-05-25 Ideal Industries, Inc. In-line push-in wire connector
US7794268B2 (en) 2007-07-09 2010-09-14 Ideal Industries, Inc. In-line push-in wire connector

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