US1626105A - Low-capacity fuse - Google Patents
Low-capacity fuse Download PDFInfo
- Publication number
- US1626105A US1626105A US86878A US8687826A US1626105A US 1626105 A US1626105 A US 1626105A US 86878 A US86878 A US 86878A US 8687826 A US8687826 A US 8687826A US 1626105 A US1626105 A US 1626105A
- Authority
- US
- United States
- Prior art keywords
- low
- fuse
- wire
- wires
- casing
- 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
Links
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
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
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/044—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
-
- 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
- H01H85/0039—Means for influencing the rupture process of the fusible element
- H01H85/0047—Heating means
- H01H85/0052—Fusible element and series heating means or series heat dams
Definitions
- An object of my invention is to provide a low-capacity fuse which makes use of metal of high resistance and therefore quickly heated for fusing a metal of low melt1ng temperature, whereby a fuse is provided that will operate at low current-carrying capacities.
- a further object of my invention is to provide a device of the type described whlch is extremely simple in construction, and 1n which the fuse wires are connected to each other in a manner to provide a good electrical connection, the connection of the wires also effecting a quick break between the wires when the fuse operates.
- a further object of my invention is to provide a device of the type described in which the fuse may be readily renewed by the simple addition of a small piece of fusible wire.
- Figure 2 is a top plan view of Figure 1
- Figure 3 is an enlarged sectional view along the line 33 of Figure 1.
- the device is designed primarily to oper ate at low current-carrying capacities for use in radio work, experimental work, and where sensitive and inexpensive electrical, equipment is used.
- the device comprises a casing 1 in which I dispose two insulating strips 2 and 8.
- the casing 1 is preferably made of insulating material also.
- the strips 2 and 3 are connected to each other by eyelets 4 and 5 and are spaced from each other by soldering lugs 6 and 7 and washers 6' and 7 see Figure 3.
- the lugs have openings 8 and 9 adjacent to their free ends for receiving wires 10 and 11.
- the wires 10 and 11 constitute the fusing element.
- the wire 10 is made of a metal. having a low melting temperature, for example, a metal composed of a lead and a tin alloy.
- the wire 11, or the second part of the fuse is made of a metal having a relatively high resistance, for example, nickel and chromium alloy, or a nichrome wire. These wires are soldered to their respective lugs 6 and 7 and are bent around each other at 12 and then have their free ends cemented or otherwise secured to the strip 3, as at 13 and 14.
- the wireslO and 11 are drawn taut for affording a good electrical connection between the lugs 6 and 7.
- Terminal screws 15 and 16 are inserted through openings in the casing 1 and also pass through the eyelets 1 and 5.
- Lock nuts 17 and 18 secure the screws in place and clamp the screws tightly to the eyelets 4 and 5, whereby a good electrical connection is made.
- Knurled nuts 19 and 20 are also mounted upon the screws 15 and 16 for securing wires, not shown, to the terminals.
- the operation 1 thereof may be readily understood.
- the fuse is connected in a circuit and the current will flow, for example, from the terminal 15 to the lug 6, the wire 10, the wire 11, the lug 7, and then to the terminal 16. If an excessive current should be passed through the fuse, the high-resistance wire would quickly heat and would therefore aid the current in melting the low-melting tempera ture wire 10.
- the fusing element is mounted for its protection within insulating material, i. e., the strips 3 and 4 and the casing 1.
- the same members 15 and 16, which effect the assembly of'the fuse, also serve to con nect the fuse with the mounting 1 and t0 fusible Wire connected to one of said lugs, a
- a low-capacity fuse comprising a casing, and having their free ends secured to said i insulating members disposed in said casing, insulating members, and terminals passed eyelets connecting said members together, through said casing and through said eyelugs carried by said eyelets and being dislets.
Description
April 26- 1927. 1,626,105
E. V. SUNDT LOW CAPACITY FUSE Filed Feb. 8. 1926 INVENTOR 6. a Sandi ATTORNEYS;
Patented Apr. 26, 1927.
EDWARD V. SUN DT, OF CHICAGOyILLINOISL LOW-CAPACITY FUSE.
Application filed February My invention relates to improvements in low-capacity fuses, and it consists in. the combinations, constructions, and arrangements herein described and claimed.
An object of my invention is to provide a low-capacity fuse which makes use of metal of high resistance and therefore quickly heated for fusing a metal of low melt1ng temperature, whereby a fuse is provided that will operate at low current-carrying capacities.
A further object of my invention is to provide a device of the type described whlch is extremely simple in construction, and 1n which the fuse wires are connected to each other in a manner to provide a good electrical connection, the connection of the wires also effecting a quick break between the wires when the fuse operates.
A further object of my invention is to provide a device of the type described in which the fuse may be readily renewed by the simple addition of a small piece of fusible wire.
Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claims.
My invention is illustrated in the accompanying drawings, forming part of thls application, in which- Figure 1 is a sectional view of the casing showing the parts operat-ively connected tor gether,
Figure 2 is a top plan view of Figure 1, and
Figure 3 is an enlarged sectional view along the line 33 of Figure 1.
The device is designed primarily to oper ate at low current-carrying capacities for use in radio work, experimental work, and where sensitive and inexpensive electrical, equipment is used. The device comprises a casing 1 in which I dispose two insulating strips 2 and 8. The casing 1 is preferably made of insulating material also. The strips 2 and 3 are connected to each other by eyelets 4 and 5 and are spaced from each other by soldering lugs 6 and 7 and washers 6' and 7 see Figure 3. The lugs have openings 8 and 9 adjacent to their free ends for receiving wires 10 and 11.
s, 1926. Serial No. 86,878.
The wires 10 and 11 constitute the fusing element. The wire 10 is made of a metal. having a low melting temperature, for example, a metal composed of a lead and a tin alloy. The wire 11, or the second part of the fuse, is made of a metal having a relatively high resistance, for example, nickel and chromium alloy, or a nichrome wire. These wires are soldered to their respective lugs 6 and 7 and are bent around each other at 12 and then have their free ends cemented or otherwise secured to the strip 3, as at 13 and 14. The wireslO and 11 are drawn taut for affording a good electrical connection between the lugs 6 and 7.
From the foregoing description of the various parts of the device, the operation 1 thereof may be readily understood. The fuse is connected in a circuit and the current will flow, for example, from the terminal 15 to the lug 6, the wire 10, the wire 11, the lug 7, and then to the terminal 16. If an excessive current should be passed through the fuse, the high-resistance wire would quickly heat and would therefore aid the current in melting the low-melting tempera ture wire 10. The same tension of the wires 10 and 11, which makes a good electrical connection between the wires, now aids in quickly breaking the contact between the wires when the wire 10 is melted at 12.
This principle of fusion permits a small capacity fuse to be constructed which is easily manufactured, and which will withstand the most severe commercial requirements. The fusing element is mounted for its protection within insulating material, i. e., the strips 3 and 4 and the casing 1. The same members 15 and 16, which effect the assembly of'the fuse, also serve to con nect the fuse with the mounting 1 and t0 fusible Wire connected to one of said lugs, a
connect the fusing element with the circuit. high-resistant wire connected to the other 10 I claim: lug, said wires contacting with each other A low-capacity fuse comprising a casing, and having their free ends secured to said i insulating members disposed in said casing, insulating members, and terminals passed eyelets connecting said members together, through said casing and through said eyelugs carried by said eyelets and being dislets.
posed between said insulating members, a EDWARD V. SUNDT.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86878A US1626105A (en) | 1926-02-08 | 1926-02-08 | Low-capacity fuse |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86878A US1626105A (en) | 1926-02-08 | 1926-02-08 | Low-capacity fuse |
Publications (1)
Publication Number | Publication Date |
---|---|
US1626105A true US1626105A (en) | 1927-04-26 |
Family
ID=22201481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US86878A Expired - Lifetime US1626105A (en) | 1926-02-08 | 1926-02-08 | Low-capacity fuse |
Country Status (1)
Country | Link |
---|---|
US (1) | US1626105A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2757259A (en) * | 1952-08-01 | 1956-07-31 | Hughes Aircraft Co | Electrical circuit breaker |
US3030473A (en) * | 1959-07-01 | 1962-04-17 | Burndy Corp | Protective device for the electrical system of aircraft |
US3569891A (en) * | 1969-10-31 | 1971-03-09 | Westinghouse Electric Corp | Current limiting fuse |
US5099218A (en) * | 1990-12-07 | 1992-03-24 | Avx Corporation | Binary fuse device |
-
1926
- 1926-02-08 US US86878A patent/US1626105A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2757259A (en) * | 1952-08-01 | 1956-07-31 | Hughes Aircraft Co | Electrical circuit breaker |
US3030473A (en) * | 1959-07-01 | 1962-04-17 | Burndy Corp | Protective device for the electrical system of aircraft |
US3569891A (en) * | 1969-10-31 | 1971-03-09 | Westinghouse Electric Corp | Current limiting fuse |
US5099218A (en) * | 1990-12-07 | 1992-03-24 | Avx Corporation | Binary fuse device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4533896A (en) | Fuse for thick film device | |
US2300142A (en) | Fusible electric protective device | |
US4344058A (en) | Low voltage cartridge fuse design | |
US2966649A (en) | Fuse resistor | |
GB1387288A (en) | Current limiting fuse | |
US2111749A (en) | Electric protective device | |
US3639874A (en) | Fuses | |
US1626105A (en) | Low-capacity fuse | |
US3094600A (en) | Electric fuse having improved cap link connection | |
CA1155155A (en) | Current-limiting fuse | |
US2773961A (en) | Time delay fuse | |
US3423567A (en) | Electrically heated bedcovering | |
US3614699A (en) | Protector for electric circuits | |
US2281795A (en) | Fuse link construction | |
US3535668A (en) | Electrical cartridge fuses | |
US3246105A (en) | Protector for electric circuits | |
US2202719A (en) | Protective device for electric circuits | |
US2286518A (en) | Fusible protective device | |
US2062669A (en) | Fuse indicator | |
US3453580A (en) | Protector for electric circuits | |
US2171864A (en) | Fuse link | |
US2789182A (en) | Fuse construction | |
US3206579A (en) | Fuse and method of manufacture | |
US2773960A (en) | Time delay fuse | |
CN105489455A (en) | Thermal link with double insulators |