US850365A - Alarm-fuse. - Google Patents
Alarm-fuse. Download PDFInfo
- Publication number
- US850365A US850365A US30266706A US1906302667A US850365A US 850365 A US850365 A US 850365A US 30266706 A US30266706 A US 30266706A US 1906302667 A US1906302667 A US 1906302667A US 850365 A US850365 A US 850365A
- Authority
- US
- United States
- Prior art keywords
- fuse
- body portion
- tongue
- alarm
- terminal
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
Definitions
- My invention relates to an alarm-fuse, and has for its object to provide an improved and efficient device which will be very simple and cheap to manufacture.
- Figure l is a perspective view of anV alarm-fuse' embodying my invention.
- Fig. 2 is a longitudinal sectional view thereof, and
- Fig. 3 is a transverse. sectional View on line 3 3 of Fig. 2.
- the alarm-fuse shown is especially adaptf ed for use inte'lephone-eXchanges in order to guard the apparatus against abnormal currents, the fuses when blown bringing about the closure of a grounded alarm-oir-l in the art.
- the flat body portion a of the fuse shown and the terminal a thereof at one end of the body portion are formed integrally, being stamped from a single piece of metal.
- the body portion Supports. at its other end an insulated terminal a2, said body portion having an extension 113 adapted to fit within the-terminal a2, which preferably comprises a flat metal collar, an insulating-sleeve b being interpo'sed between the collar and extension'aa.
- a spring-tongue c is secured at one end to the body portion, being preferably struck out from said body portion, and lies at the rear of the body portion. with its free end adjacent the terminal u?,
- the terminal a2 preferably carries Specication of Letters Patent. Application filed February 24
- the body portion a is preferably corrugated, as shown, to
- the fuse comprises parts for assembly struction, while very Simple and cheap to manufacture.
- An alarm-fuse comprising a body por- .I tion of metal, a termina at one end ofsaid. body portion formed integrally therewith,
- An alarm-fuse comprising a metal body portion, a terminal at one end thereof formed integrally therewith, an insulated terminal Aat the other end of said body-portion, a
- alarm-fuse comprising an integrallyof the fuse it closes an' portion, an leXten- The fuse-wire passes through the the'minimum number vof v and 1s substantial In oon-y 'parts being stamped from a single. iece of I of said. bodyfport'on, an
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Fuses (AREA)
Description
No. 850,365. PATENTEDAPR. 16, 1907.
W. E. HARKNESS.
ALARM FUSE. APPLIUATION FILED 313.24. 1906.
' .To all whom it 'may concern:
zvo
UNITED-STATES PATENT OEEICE -WILLIAM E. HARKNESS, OF CHICAGO, ILLINOIS, ASSIGNOE To WESTERN VELECTRIC COMPANY, OF CHICAGO, ILLINOIS, A CORPORATIONl OE ILLI- N OIS.
ALARM-FUSE.
Be it known that I, WILLIAM E. HARKNESS, a citizen of the United States, residing at Chicago,`in thecounty of Cook and State of IllinoIs', have invented a certain new and useful Improvement in Alarm-Fuses, of which the" following 1s a full, clear, concise, and exact description. r p
My inventionrelates to an alarm-fuse, and has for its object to provide an improved and efficient device which will be very simple and cheap to manufacture.
I will describe my invention by reference to the accompanying drawings, which represent the preferred embodiment thereof, reserving for the'appended claims a statement of the parts, improvements, and combinations which I consider novel with me.
In the drawings, Figure l is a perspective view of anV alarm-fuse' embodying my invention. Fig. 2 is a longitudinal sectional view thereof, and Fig. 3 is a transverse. sectional View on line 3 3 of Fig. 2.
The same letters of reference are used to p designate the same parts wherever shown.
cuit well known The alarm-fuse shown is especially adaptf ed for use inte'lephone-eXchanges in order to guard the apparatus against abnormal currents, the fuses when blown bringing about the closure of a grounded alarm-oir-l in the art.
The flat body portion a of the fuse shown and the terminal a thereof at one end of the body portion are formed integrally, being stamped from a single piece of metal. The body portion Supports. at its other end an insulated terminal a2, said body portion having an extension 113 adapted to fit within the-terminal a2, which preferably comprises a flat metal collar, an insulating-sleeve b being interpo'sed between the collar and extension'aa.
A spring-tongue c is secured at one end to the body portion, being preferably struck out from said body portion, and lies at the rear of the body portion. with its free end adjacent the terminal u?,
nal a2 while maintaining the tongue under tension.
The terminal a2 preferably carries Specication of Letters Patent. Application filed February 24| 1906. Serial No. 302.667.
-tongue c.
particularly a fuse-wire d electric-V lally connecting the tongue with said termi` Patented April 16, 1907.
arm a, to which one end of the fuse-wire d is secured, the other end being secured to the opening inthe body portion formed by the striking out of said tongue. The body portion ais preferably corrugated, as shown, to
give the device strength. v
In practice when the spring-,tongue c is released by the blowing alarm-circuit containing a bell o'r other suitable signal device.
With my arrangement it will be seen that the fuse comprises parts for assembly struction, while very Simple and cheap to manufacture. i
I claim- 1; An alarm-fuse comprising a body por- .I tion of metal, a termina at one end ofsaid. body portion formed integrally therewith,
-an Insulated terminal upon the jother end of said body portion, a spring-tongue secured at one end to said body sion of said insulated terminal on the side of the body portion oppositesaid tongue, and a4 fuse passing through an opening in said body portion andv uniting said extension with the free end of said tongue, and maintaining said tongue undertension.
2. An alarm-fuse comprising a metal body portion, a terminal at one end thereof formed integrally therewith, an insulated terminal Aat the other end of said body-portion, a
spring-tongue struck out vfrom said body portion, an extension of sai-d insulated terminal, and a fuse connecting said tongue and extension and holding said tongue under t'enjV sion'. I
` .-3. A n alarm-fusecomprising a body portion and term-'nal at one end thereof, said metal, a flat Inetal collar or termina over the other end insulating-sleeve between said collar. and body portion, an angular extension of said ollar, a spring-tongue stam ed from said od body portion opposite said extension, `and a fuse-wire connecting said tongue and eXtenfitting sion to maintain said tongue under tension.
4. alarm-fuse comprising an integrallyof the fuse it closes an' portion, an leXten- The fuse-wire passes through the the'minimum number vof v and 1s substantial In oon-y 'parts being stamped from a single. iece of I of said. bodyfport'on, an
y portion and lying on te side of the Iloo formed metal body portion, sprng-nnguc, my naine this 20th day of Fobrumy, A. D. and terminal, an nlsulated terminal cmfwdf i906. by said body poltion, and a fuse-WH@ elec f 4 "rc trcally connecting said tongue yand insulated TNILLIAM D H'Alg'hbh" J tennna] and maintaining said tongue under Wtnessses:
tension. ROY T. ALLOWAY, n Witness whereof I hereunii-O lQubscrbe E. F. BEAUBEN.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30266706A US850365A (en) | 1906-02-24 | 1906-02-24 | Alarm-fuse. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30266706A US850365A (en) | 1906-02-24 | 1906-02-24 | Alarm-fuse. |
Publications (1)
Publication Number | Publication Date |
---|---|
US850365A true US850365A (en) | 1907-04-16 |
Family
ID=2918824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US30266706A Expired - Lifetime US850365A (en) | 1906-02-24 | 1906-02-24 | Alarm-fuse. |
Country Status (1)
Country | Link |
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US (1) | US850365A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3076079A (en) * | 1959-03-16 | 1963-01-29 | Mc Graw Edison Co | Protectors for electric circuits |
-
1906
- 1906-02-24 US US30266706A patent/US850365A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3076079A (en) * | 1959-03-16 | 1963-01-29 | Mc Graw Edison Co | Protectors for electric circuits |
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