US2796494A - Fire fuse link - Google Patents
Fire fuse link Download PDFInfo
- Publication number
- US2796494A US2796494A US569574A US56957456A US2796494A US 2796494 A US2796494 A US 2796494A US 569574 A US569574 A US 569574A US 56957456 A US56957456 A US 56957456A US 2796494 A US2796494 A US 2796494A
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- Prior art keywords
- members
- link
- tension
- subjected
- key
- Prior art date
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- Expired - Lifetime
Links
- 229910000679 solder Inorganic materials 0.000 description 8
- 238000000926 separation method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910000581 Yellow brass Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- -1 metallic Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/02—Mechanical actuation of the alarm, e.g. by the breaking of a wire
Definitions
- FIRE FUSE'. LINK Filed March 5, 1956 INVENTOR I'aylajalms/ ATTORNEY United StatCS Patent iice Y 2,796,494 Patented June 18, 1957 FIRE FUSE LINK Taylor Barnes, Shreveport, La., assignor to Bar-Brook Manufacturing Co., Inc., Shreveport, La.
- the ksubject invention has Amany uses as key lock kickoutfor ire fuse sprinklers, duct'work systems, in fact in any given location, ⁇ wherever a ktemperature responsive circuit closer is krequired ⁇ for home Aor building to increase the security of the occupants and users of the home or building.
- the present apparatus may function to operate a sprinkler system or any of the many types of alarms.
- the present invention is primarily ldesigned kfor use with a switch box having a built-in momentary contact, spring loaded to Off position and having an easily removablecover for ready access to the wiring .without the necessity of dismantling the vfuse ,link or the switch assembly.
- Figure 4 is a plan lView ⁇ of the cylindrical key, while Figure 5 is an end view of the same.
- the connecting fire fuse link comprises two overlapping electrolytically tinned members 10 and 12.
- the specific material used is yellow brass, V.062 inch thick, which are tin plated before assembly.
- the opposed outerends 14 and 16 are of general circular formation and are provided with central apertures18 and 20.
- the aperture 18 is adapted to'be lreceived on a threaded post of a switch boxeassembly, not shown, while the aperture 20 is engaged by a switch lever opposed from said post.
- the members 10 and 12 have reversed raised circular portions 22 and ⁇ 24 while only the circular portion 22 has an opening26 which serves as a gas vent. It is to be noticed that the overlapping members 10 and 12 have reversed embossments 28 and 30 ⁇ in the semi-circular ends 14 and 16 while the inner ends of the members are curved at 32 and 34.
- companion half-pockets 36 and38 are formed by the reversed raised central portions.
- lnterposed between the two overlapping members 10 and 12 is a strip of solder lm 40, from .002 to .G04 inch in thickness, terminating yat the opposed ends 32 .and 34.
- Adapted to ⁇ be encased in the formed pocket .36. 38 is a loosely contained slug or key 42, preferably cylindrical.
- the fire fuse link is tinned electrolytically for better solder adhesion and increased corrosion resistance.
- the solder is to be made in two types, one melts at 1'35 degrees Fahrenheit, which is required bysome States; the other metals ,or waxes, at the standard or accepted conditions establishedby their code standards, namely ⁇ tests in accepted21 ⁇ 2 and 32 degrees Fahrenheit or in the equivalent centigrade scale.
- Y n y With respect to other material qualications, ⁇ theconnecting links have been tinned electrolytically for better solder adhesion and increased corrosion resistance.
- the solder mayrbe yof :twoltypes that will melt at '113-5 or 165 degrees Fahrenheit.
- the link is also adapted for important utilization inconnection with attic fan shutters, doors,l as well as with conventional warning devices.
- Another objective is to provide an overlapping connecting link that will hold any specified strength, weight or pull, dependent upon the size link used.
- a further object is to arrange for the link melting point at the desired temperature through the use of approved bonding material, metallic or otherwise.
- An additional object is to provide a connecting key lock construction which will enable an immediate and positive jacking action with respect to the overlapping link members and the loosely contained key lock.
- Figure l is a top plan View of the connecting link.
- Figure 2 is a sectional view taken on the line 2 2 of Figure l.
- Figure 3 is a similar sectional view taken at the time of the separation of the two overlapping members.
- the switch utilized maybe designed for OnloadedWpurposes for use in connection with re alarms, signal lights, signal bells and other safety mechanisms. .Dueto the uses yof the specific fuse linkwith the suggested typeofjswitch in -this development a faster acting'operation has been accomplished.
- the strip of solder iilm is designed to melt at a predetermined temperature and pressure and at a predetermined time.
- the connecting link may be constructed to hold any specified strength, weight or pull, dependent upon the size used.
- the melting point temperature effectiveness is acquired by using approved Bureau of Standards bonding material, metallic, waxes or otherwise in accordance with their established standards, namely 212 or 32 degrees Fahrenheit, or equivalent centigrade scale.
- the subject link adapted to be actuated by the temperature under standard conditions has the approval of the Underwriters Laboratory, such approval given at and 165 degrees Fahrenheit.
- the link In addition to operation in connection with attic fan shutters and switches, the link is adaptable for use on duct work, doors and conventional safety warning devices, or wherever time operation of the devices is required and manual replacement is involved.
- a connecting fuse link subjected to tension comprising two overlapping members fusibly connected and means between said members for jacking apart said members upon'fusing of saidfusible connection while said members are subjected to tension, and'means comprising prising reversed raised central portions on the outer surreversed raised central portions on said members wherev byea pocket is formed adapted to receive a key.
- a connecting fuse link subjected'to tension cornprising two overlapping members fusibly connected and means between said two members forl converting relatively longitudinal movement of vsaid members into trans* verse separation thereof upon fusing of said fusible connection while said members are subjected to tension, said means comprising reversed raised central portions on said members whereby a pocket is formed adapted to receive a key, and said key being approximately of the same formation as theinner walls of said pocket whereby said key may be loosely received therein.
- a connecting fuse link subjected to tension comprising two overlapping membersrfusibly connected and means between said members for jacking apart said members upon fusing of said fusible connection while said members are subjected to tension, means comprising reversed raised central portions on said members whereby a pocket is formed adapted to receive a key, and said key being approximately of the same formation as the inner walls of said pocket whereby said key may be loosely received therein.
- a connecting fuse link subjected to tension comprising two overlapping members fusibly connected and means between said two members for converting relatively longitudinal movement of said members into transverse separation thereof upon fusing of said fusible connection while said members are subjected to tension, said means comprising reversed raised central portions on the outer surfaces of said members :whereby a pocket is formed, afloose keyfreceivedy therein, said key adapted to tilt and in abutment with said two members.
- a connecting fuse link subjected to tension comprising two overlapping members fusibly connected and means between said two members for converting relatively longitudinal movement of said members into transverse separation thereof upon fusing of said fusible connection while said members are subjected to tension, and said means comprising reversed central portions raised above the plane of the respective outer surfaces of said members whereby a pocket is formed to receive a key, and a gas vent disposed in the raised portion of the upper overlappingV member.
- a connecting fuse link subjected to tension comprising two overlapping members fusibly connected and means between said members for jacking apart said members upon fusing of said fusible connection while said members are subjected to ⁇ tension, means comprising reversed raised central portions on said members whereby a pocket is formed adapted to receive a tiltable key, and a gas vent disposed in the raised .portion of the upper overlapping member.
- a connecting fuse'link subjected to tension comprising two overlapping members fusibly connected and means between said two members for converting relatively longitudinal movement of said members into transverse separation thereof upon fusing of said fusible connection while said members are subjected to tension, and spaced embossments formed in the opposed ends of said members whereby better clearance of said fusible connection is maintained.
- a connecting fuse link subjected to tension comprising two overlapping members fusibly connected and means between said two members for converting relatively longitudinal movement of said members into transverse separation thereof upon fusing of said fusible connection while said members are subjected to tension, said means comprising reversed central portions raised above the plane of the prospective outer surfaces of said members whereby a pocket isformed adapted to receive a key, and spaced embossments formed in the opposed ends of said members whereby better clearance of said fusible connection is'maintained.
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fuses (AREA)
Description
June 1s, 19574 T. BARNES 2,796,494
FIRE FUSE'. LINK Filed March 5, 1956 INVENTOR I'aylajalms/ ATTORNEY United StatCS Patent iice Y 2,796,494 Patented June 18, 1957 FIRE FUSE LINK Taylor Barnes, Shreveport, La., assignor to Bar-Brook Manufacturing Co., Inc., Shreveport, La.
Application March 5, l1956 Serial No. 569,514 9 Claims. (C1. 20o- 142) This Vinvention relates to re fuse links,i.particularly to.the connecting -solder type which will melt in a predetermined time, a predetermined temperature and at a predetermined pressure or force. 1
The ksubject invention has Amany uses as key lock kickoutfor ire fuse sprinklers, duct'work systems, in fact in any given location, `wherever a ktemperature responsive circuit closer is krequired `for home Aor building to increase the security of the occupants and users of the home or building. Obviously, the present apparatus may function to operate a sprinkler system or any of the many types of alarms.
'The present invention is primarily ldesigned kfor use with a switch box having a built-in momentary contact, spring loaded to Off position and having an easily removablecover for ready access to the wiring .without the necessity of dismantling the vfuse ,link or the switch assembly.
`It is contemplated that the approved type of bonding material rbe used that meets the requirements of .the Bureaupof Standards for ythe melting point of materials,
Figure 4 is a plan lView `of the cylindrical key, while Figure 5 is an end view of the same.
In the drawings where like reference characters denote like parts, the connecting fire fuse link comprises two overlapping electrolytically tinned members 10 and 12. The specific material used is yellow brass, V.062 inch thick, which are tin plated before assembly. The opposed outerends 14 and 16 are of general circular formation and are provided with central apertures18 and 20.
The aperture 18 is adapted to'be lreceived on a threaded post of a switch boxeassembly, not shown, while the aperture 20 is engaged by a switch lever opposed from said post. The members 10 and 12 have reversed raised circular portions 22 and` 24 while only the circular portion 22 has an opening26 which serves as a gas vent. It is to be noticed that the overlapping members 10 and 12 have reversed embossments 28 and 30` in the semi-circular ends 14 and 16 while the inner ends of the members are curved at 32 and 34.
In Figures 2 and 3 it will be observed that companion half-pockets 36 and38 are formed by the reversed raised central portions. lnterposed between the two overlapping members 10 and 12 is a strip of solder lm 40, from .002 to .G04 inch in thickness, terminating yat the opposed ends 32 .and 34. Adapted to `be encased in the formed pocket .36. 38 is a loosely contained slug or key 42, preferably cylindrical.
The fire fuse link is tinned electrolytically for better solder adhesion and increased corrosion resistance. The solder is to be made in two types, one melts at 1'35 degrees Fahrenheit, which is required bysome States; the other metals ,or waxes, at the standard or accepted conditions establishedby their code standards, namely `tests in accepted21`2 and 32 degrees Fahrenheit or in the equivalent centigrade scale. Y n y With respect to other material qualications, `theconnecting links have been tinned electrolytically for better solder adhesion and increased corrosion resistance. The solder mayrbe yof :twoltypes that will melt at '113-5 or 165 degrees Fahrenheit. f
In addition to the above noted usesv, the link is also adapted for important utilization inconnection with attic fan shutters, doors,l as well as with conventional warning devices.
It is an object of my invention to provide a connecting link for operating circuit closers at a predetermined temperature.
Another objective is to provide an overlapping connecting link that will hold any specified strength, weight or pull, dependent upon the size link used.
A further object is to arrange for the link melting point at the desired temperature through the use of approved bonding material, metallic or otherwise.
An additional object is to provide a connecting key lock construction which will enable an immediate and positive jacking action with respect to the overlapping link members and the loosely contained key lock.
These and other objects made apparent during the further progress of the specification are accomplished by means of the apparatus described herein; a full and complete understanding of my invention being facilitated by reference to the drawings herein, in which,
Figure l is a top plan View of the connecting link.
Figure 2 is a sectional view taken on the line 2 2 of Figure l.
Figure 3 is a similar sectional view taken at the time of the separation of the two overlapping members.
melts at 165 degrees, Fahrenheit, a requisite in the majority of states and is considered to be acceptable for all service use such as on fans and blowers.
lt can also be appreciated the switch utilized maybe designed for OnloadedWpurposes for use in connection with re alarms, signal lights, signal bells and other safety mechanisms. .Dueto the uses yof the specific fuse linkwith the suggested typeofjswitch in -this development a faster acting'operation has been accomplished.
There is nolag or delay `when temperature has reached y the melting point of `the' solder and the jacking action of the `small cylindrical rkey obtained springs apart the two halves of ,the fuse link. This resultant Aaction is clearly defined` in Figure3 `where the key or-slugis shown tilted with the ,two lpreviously lfused halvesl of the link separated. It can be understood that when the present device is subjected to tension the relatively longitudinal movement of the members is converted into transverse separation of the two half sections. Because of this and the abutting relationship of the two members with the loosely contained key or slug the tilting or jacking action is accomplished.
From the above it will be apparent that the strip of solder iilm is designed to melt at a predetermined temperature and pressure and at a predetermined time. The connecting link may be constructed to hold any specified strength, weight or pull, dependent upon the size used.
The melting point temperature effectiveness is acquired by using approved Bureau of Standards bonding material, metallic, waxes or otherwise in accordance with their established standards, namely 212 or 32 degrees Fahrenheit, or equivalent centigrade scale. The subject link adapted to be actuated by the temperature under standard conditions has the approval of the Underwriters Laboratory, such approval given at and 165 degrees Fahrenheit.
In addition to operation in connection with attic fan shutters and switches, the link is adaptable for use on duct work, doors and conventional safety warning devices, or wherever time operation of the devices is required and manual replacement is involved.
Various changes and modifications may be made in the size, shape and arrangement of the connecting lire fuse llink without departingfromV the-spirit of the invention or scope of the appended claims.
What is claimed is:
1. A connecting fuse link subjected to tension comprising two overlapping members fusibly connected and means between said members for jacking apart said members upon'fusing of saidfusible connection while said members are subjected to tension, and'means comprising prising reversed raised central portions on the outer surreversed raised central portions on said members wherev byea pocket is formed adapted to receive a key. Y
2. A connecting fuse link subjected'to tension cornprising two overlapping members fusibly connected and means between said two members forl converting relatively longitudinal movement of vsaid members into trans* verse separation thereof upon fusing of said fusible connection while said members are subjected to tension, said means comprising reversed raised central portions on said members whereby a pocket is formed adapted to receive a key, and said key being approximately of the same formation as theinner walls of said pocket whereby said key may be loosely received therein.
3. A connecting fuse link subjected to tension comprising two overlapping membersrfusibly connected and means between said members for jacking apart said members upon fusing of said fusible connection while said members are subjected to tension, means comprising reversed raised central portions on said members whereby a pocket is formed adapted to receive a key, and said key being approximately of the same formation as the inner walls of said pocket whereby said key may be loosely received therein.v i
4. A connecting fuse link subjected to tension comprising two overlapping members fusibly connected and means between said two members for converting relatively longitudinal movement of said members into transverse separation thereof upon fusing of said fusible connection while said members are subjected to tension, said means comprising reversed raised central portions on the outer surfaces of said members :whereby a pocket is formed, afloose keyfreceivedy therein, said key adapted to tilt and in abutment with said two members.
5. A connecting fuse link subjected yto tension com* prising two overlapping members fusibly connected and means between said two members for jacking .apart said members upon fusing of said fusible connection while said members are subjected to tension, said means comfaces of said members whereby a pocket is formed, a loose slug received therein, said slug adapted to tilt and in abutment with said two members.
6. A connecting fuse link subjected to tension comprising two overlapping members fusibly connected and means between said two members for converting relatively longitudinal movement of said members into transverse separation thereof upon fusing of said fusible connection while said members are subjected to tension, and said means comprising reversed central portions raised above the plane of the respective outer surfaces of said members whereby a pocket is formed to receive a key, and a gas vent disposed in the raised portion of the upper overlappingV member.
7. A connecting fuse link subjected to tension comprising two overlapping members fusibly connected and means between said members for jacking apart said members upon fusing of said fusible connection while said members are subjected to` tension, means comprising reversed raised central portions on said members whereby a pocket is formed adapted to receive a tiltable key, and a gas vent disposed in the raised .portion of the upper overlapping member. f
8. A connecting fuse'link subjected to tension comprising two overlapping members fusibly connected and means between said two members for converting relatively longitudinal movement of said members into transverse separation thereof upon fusing of said fusible connection while said members are subjected to tension, and spaced embossments formed in the opposed ends of said members whereby better clearance of said fusible connection is maintained.
9. A connecting fuse link subjected to tension comprising two overlapping members fusibly connected and means between said two members for converting relatively longitudinal movement of said members into transverse separation thereof upon fusing of said fusible connection while said members are subjected to tension, said means comprising reversed central portions raised above the plane of the prospective outer surfaces of said members whereby a pocket isformed adapted to receive a key, and spaced embossments formed in the opposed ends of said members whereby better clearance of said fusible connection is'maintained.
l References Cited in the leof this patent `UNITED STATES PATENTS
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US569574A US2796494A (en) | 1956-03-05 | 1956-03-05 | Fire fuse link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US569574A US2796494A (en) | 1956-03-05 | 1956-03-05 | Fire fuse link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2796494A true US2796494A (en) | 1957-06-18 |
Family
ID=24275991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US569574A Expired - Lifetime US2796494A (en) | 1956-03-05 | 1956-03-05 | Fire fuse link |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2796494A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD325193S (en) | 1988-11-30 | 1992-04-07 | Yazaki Corporation | Fuse |
| US6404322B1 (en) * | 1999-02-12 | 2002-06-11 | Elsie Manufacturing Company, Inc. | Fusible link |
| US20080048820A1 (en) * | 2006-08-28 | 2008-02-28 | Yazaki Corporation | Fuse element and method of manufacturing the same |
| US20080117016A1 (en) * | 2006-11-22 | 2008-05-22 | Tsung-Mou Yu | Temperature Fuse Protection Device |
| US20080204184A1 (en) * | 2005-04-08 | 2008-08-28 | Auto Kabel Managementgesellschaft Mbh | Passive Triggering of a Circuit Breaker for Electrical Supply Lines of Motor Vehicles |
| US20110237102A1 (en) * | 2008-11-05 | 2011-09-29 | Auto Kabel Managementgesellschaft Mbh | Plug-In Connection for an Occupant Protection Means |
| US20130009745A1 (en) * | 2010-03-11 | 2013-01-10 | Auto Kabel Managementgesellschaft Mbh | Fuse for a Motor Vehicle Power Line |
| EP2550996A3 (en) * | 2011-07-26 | 2015-01-07 | Minimax GmbH & Co KG | Thermal separation member with soldered strut |
| US20150332881A1 (en) * | 2014-05-19 | 2015-11-19 | Hamilton Sundstrand Corporation | Electromechanical fuse for differential motion sensing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2198410A (en) * | 1938-02-09 | 1940-04-23 | Joseph L Lafleur | Fire alarm |
| US2354111A (en) * | 1942-12-01 | 1944-07-18 | Allen J Gardenhour | Fire detector |
-
1956
- 1956-03-05 US US569574A patent/US2796494A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2198410A (en) * | 1938-02-09 | 1940-04-23 | Joseph L Lafleur | Fire alarm |
| US2354111A (en) * | 1942-12-01 | 1944-07-18 | Allen J Gardenhour | Fire detector |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD325193S (en) | 1988-11-30 | 1992-04-07 | Yazaki Corporation | Fuse |
| US6404322B1 (en) * | 1999-02-12 | 2002-06-11 | Elsie Manufacturing Company, Inc. | Fusible link |
| US20080204184A1 (en) * | 2005-04-08 | 2008-08-28 | Auto Kabel Managementgesellschaft Mbh | Passive Triggering of a Circuit Breaker for Electrical Supply Lines of Motor Vehicles |
| US8154377B2 (en) * | 2005-04-08 | 2012-04-10 | Auto Kabel Managementgesellschaft Mbh | Passive triggering of a circuit breaker for electrical supply lines of motor vehicles |
| US8258913B2 (en) * | 2006-08-28 | 2012-09-04 | Yazaki Corporation | Fuse element and method of manufacturing the same |
| US20080048820A1 (en) * | 2006-08-28 | 2008-02-28 | Yazaki Corporation | Fuse element and method of manufacturing the same |
| US20080117016A1 (en) * | 2006-11-22 | 2008-05-22 | Tsung-Mou Yu | Temperature Fuse Protection Device |
| US7639114B2 (en) * | 2006-11-22 | 2009-12-29 | Tsung-Mou Yu | Temperature fuse protection device |
| US20110237102A1 (en) * | 2008-11-05 | 2011-09-29 | Auto Kabel Managementgesellschaft Mbh | Plug-In Connection for an Occupant Protection Means |
| US20130009745A1 (en) * | 2010-03-11 | 2013-01-10 | Auto Kabel Managementgesellschaft Mbh | Fuse for a Motor Vehicle Power Line |
| US9425010B2 (en) * | 2010-03-11 | 2016-08-23 | Auto Kabel Managementgesellschaft Mbh | Fuse for a motor vehicle power line |
| EP2550996A3 (en) * | 2011-07-26 | 2015-01-07 | Minimax GmbH & Co KG | Thermal separation member with soldered strut |
| US20150332881A1 (en) * | 2014-05-19 | 2015-11-19 | Hamilton Sundstrand Corporation | Electromechanical fuse for differential motion sensing |
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