US484469A - George b - Google Patents
George b Download PDFInfo
- Publication number
- US484469A US484469A US484469DA US484469A US 484469 A US484469 A US 484469A US 484469D A US484469D A US 484469DA US 484469 A US484469 A US 484469A
- Authority
- US
- United States
- Prior art keywords
- base
- cover
- alarm
- wire
- george
- 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
- 239000000126 substance Substances 0.000 description 8
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000615 nonconductor Substances 0.000 description 4
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 235000016639 Syzygium aromaticum Nutrition 0.000 description 2
- 240000005147 Syzygium aromaticum Species 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
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
- H01H37/764—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet
- H01H37/765—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet using a sliding contact between a metallic cylindrical housing and a central electrode
Definitions
- My invention relates to thermal circuitclosers in which an excessive rise in the temperature will automatically close an electric circuit that is otherwise normally kept open; and the objects of my improvement are to provide a simple, inexpensive, and reliable electric thermostat of this class adapted to be connected with the alarm-bells used in elevators, and also with other electric bells and annunciators in hotels and dwellings.
- Figure 1 is a perspective View of a duplex fusible fire-alarm constructed in accordance with my invention, the cover of one of the wire-spring circuit-closers being shown as turned up and standing upon its edge to show said wire springs and also the insulating material in the bottom of said cover.
- Fig. 2 is a longitudinal central section of the duplex fusible fire-alarm, showing its con 11 cction with a bell and battery.
- A represents a base, preferably of wood, about three inches long and an inch and a half wide.
- two coils b of tinned spring-steel wire.
- the upper end of each coil stands free; but the lower end of the wires forming each coil is made to pass through a vertical perforation a in the base to the under side thereof, where they are preferably twisted together at b and adapted to be connected with a wire attached to an annunciator or to an electric alarm Z) and thence to one pole of a battery.
- a metallic cap or box-cover O is placed over each pair of coils b. Each cover is secured to the base A by means of two screws 0,
- Said substance is preferably streatin e. It is a commercial substance worth about nine cents per pound and is one of the best non-conductors of electricity. A few drops of oil of cloves and a small amount of rosin may also be added thereto. To prepare the covers, said substance is first melted and a small quantityabout one-sixteenth of an inch in thicknessis poured into the bottom of each cover, and when congealed it adheres 8o strongly to the tin or metal of said cover.
- the base A can be secured to the ceiling or wall of a room or the frame of an elevator by means of a screw made to pass through the central perforation a thereof.
- a series of coils b pressing against the metal cover in place of only one coil the probabilities of a completion of the electric circuit are tion of a non-conductor base-block, metallic covers 0, having non-metallic fusible insulating material secured to the bottom of said covers, two coiled springs pressing against said material, the wires of said springs being extended through the base-block, and a wire connected to and in contact With each cover, substantially as described.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Fuses (AREA)
Description
(No Model.)
G. B. SMITH.
FUSIBLB FIRE ALARM.
No. 484,469. Patented Oct. 18, 1892.
fiF/ 7E55E5: liven/01:
[in 1W. &.nw%
" UNITED STATES PATENT- OFFICE- GEORGE E. SMITH, OF ST. CLOUD, MINNESOTA, ASSIGNOR OF ONE-HALF TO ROBERT ASHlVORTH, OF SAME PLACE.
FUSIBLE FIRE-ALARM.
SPECIFICATION forming part of Letters Patent No. 484,469, dated October 18, 1892.
Application filed May 10, 1892. Serial No. 482,460. (No model.)
To all whom it may concern.-
1 3e it known that I, GEORGE E. SMITH, a citizen of the United States, residing at St. Cloud, in the county of Stearns, State of Minnesota, have invented certain new and useful Improvements in Fusible Fire -Alarms, of which the following is a specification, reference being had therein to the accompanying drawings.
My invention relates to thermal circuitclosers in which an excessive rise in the temperature will automatically close an electric circuit that is otherwise normally kept open; and the objects of my improvement are to provide a simple, inexpensive, and reliable electric thermostat of this class adapted to be connected with the alarm-bells used in elevators, and also with other electric bells and annunciators in hotels and dwellings. I attain these objects by the construction illustrated in the accompanying drawings, in which Figure 1 is a perspective View of a duplex fusible fire-alarm constructed in accordance with my invention, the cover of one of the wire-spring circuit-closers being shown as turned up and standing upon its edge to show said wire springs and also the insulating material in the bottom of said cover. Fig. 2 is a longitudinal central section of the duplex fusible fire-alarm, showing its con 11 cction with a bell and battery.
In said drawings, A represents a base, preferably of wood, about three inches long and an inch and a half wide. Upon said base are placed vertically near each end thereof two coils b, of tinned spring-steel wire. The upper end of each coil stands free; but the lower end of the wires forming each coil is made to pass through a vertical perforation a in the base to the under side thereof, where they are preferably twisted together at b and adapted to be connected with a wire attached to an annunciator or to an electric alarm Z) and thence to one pole of a battery. To complete the circuit with said bell or electric alarm, a metallic cap or box-cover O is placed over each pair of coils b. Each cover is secured to the base A by means of two screws 0,
passing through said cover, and a wire dis secured to the neck of said screws and. made to bear upon the top of the cover 0, the portion of the wire 01 between said screws being bent, preferably, in the form of a coil. The balance of said wire is made to pass through a perforation a in the base A and preferably loosely secured to said base by passing twice through said perforation a and conducted to the under side of the base in the form of a coil (1 The same arrangement is made for the two covers 0, and the two wires d are brought together and connected to the other pole of a battery or electric alarm to make a metallic circuit, in case the temperature becomes above 130 Fahrenheit in the room Where the device is placed; but to normally prevent the completion of the circuit there is placed in and secured to the under side of the cover 0 a coating formed of a non-metallic substance f, which melts at or about 130 Fahrenheit. Said substance is preferably streatin e. It is a commercial substance worth about nine cents per pound and is one of the best non-conductors of electricity. A few drops of oil of cloves and a small amount of rosin may also be added thereto. To prepare the covers, said substance is first melted and a small quantityabout one-sixteenth of an inch in thicknessis poured into the bottom of each cover, and when congealed it adheres 8o strongly to the tin or metal of said cover. When the covers are screwed to the base A over the coils b, the upper ends of said coils press normally against the streatine f; but when the device is subjected to a temperature of 130 Fahrenheit or more the substance f melts and allows the coils b to form direct contacts with the covers, and then a metallic circuit is complete in each alarm on the base A, and it connected with an alarm- 0 bell the'latter rings continuously.
The base A can be secured to the ceiling or wall of a room or the frame of an elevator by means of a screw made to pass through the central perforation a thereof. By having a series of coils b pressing against the metal cover in place of only one coil the probabilities of a completion of the electric circuit are tion of a non-conductor base-block, metallic covers 0, having non-metallic fusible insulating material secured to the bottom of said covers, two coiled springs pressing against said material, the wires of said springs being extended through the base-block, and a wire connected to and in contact With each cover, substantially as described.
In testimony whereof Iaffix my signature in presence of two Witnesses.
GEORGE E. SMITH.
Witnesses:
J. W. WING, E. E. CLARK.
Publications (1)
Publication Number | Publication Date |
---|---|
US484469A true US484469A (en) | 1892-10-18 |
Family
ID=2553318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US484469D Expired - Lifetime US484469A (en) | George b |
Country Status (1)
Country | Link |
---|---|
US (1) | US484469A (en) |
-
0
- US US484469D patent/US484469A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US484469A (en) | George b | |
US685745A (en) | Automatic fire-alarm. | |
US1003009A (en) | Fire-alarm. | |
US582093A (en) | Automatic fire-alarm | |
US1111708A (en) | Automatic fire-alarm system. | |
US510115A (en) | Electric fire-alarm | |
US856921A (en) | Electric fire-alarm. | |
US1019270A (en) | Electric fire-alarm. | |
US581544A (en) | X x x x x | |
US514361A (en) | Automatic electric fire-alarm | |
US1201241A (en) | Signal-controlling device. | |
US542775A (en) | Fire-alarm | |
US1003173A (en) | Electric fire-alarm. | |
US1156717A (en) | Automatic fire-alarm. | |
US1176809A (en) | Automatic fire-alarm. | |
US989107A (en) | Fire-alarm. | |
US530839A (en) | Automatic fire-alarm | |
US480340A (en) | Burglar-alarm | |
US546261A (en) | Charles d | |
US594192A (en) | baughman | |
US546262A (en) | Charles d | |
US565410A (en) | Electrical fire-alarm system | |
US688213A (en) | Thermostatic fire-alarm. | |
US397838A (en) | Electric signaling and alarm apparatus | |
US681495A (en) | Electric switch for alarms. |