US139292A - Improvement in automatic fire-alarms - Google Patents
Improvement in automatic fire-alarms Download PDFInfo
- Publication number
- US139292A US139292A US139292DA US139292A US 139292 A US139292 A US 139292A US 139292D A US139292D A US 139292DA US 139292 A US139292 A US 139292A
- Authority
- US
- United States
- Prior art keywords
- alarms
- improvement
- automatic fire
- fire
- holder
- 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 4
- 230000000875 corresponding Effects 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/04—Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure
Definitions
- Patented May 2 3 1 HENRY L. BROWN, OF MIDDLETOWN, CONNECTICUT.
- the invention consists in the improvement of fire-alarms, as hereinafter described and point-ed out in the claim.
- Figure v 1' is a plan view of the apparatus, illustrating my invention.
- Fig. 2 is an elevation. 1
- A is a collapsible air-holder with a pipe, B, for inflating it by air forced in by a pump or other means and having a cock,
- D is the pipe of lead, or other fusible substance, connected with the holder, and arranged throughout the building where it will be most exposed to fire.
- R I is a lever connected with the holder, so that when it is inflated the spring J will be extended.
Description
H. 'L-. BROWN. Automatic Fire-Alarms.
Patented May 2 3 1 HENRY L. BROWN, OF MIDDLETOWN, CONNECTICUT.
IMPROVEMENT IN AUTOMATIC FIRE-ALARMS.
Specification forming part of Letters Patent No. 139,292, dated May 27, 1873; application filed March 15, 1873.
To all whonm't may concern:
Be it known that I, HENRY L. BaowN, of Middletown, in the county of Middlesex and State of Connecticut. have invented a new and Improved Fire and Burglar Alarm, of which the following is a specification:
The invention consists in the improvement of fire-alarms, as hereinafter described and point-ed out in the claim.
I propose to have a small tube of lead, or other substance easily destroyed by fire, running throughout the building where it will be exposed and burn ed in case of fire'in the building, and connecting with a collapsible airholder, inflated and connected with a lever and a spring, so that when the tube is burned and the air escapes the spring will move the lever and cause it to release a bell-hammer of an alarm mechanism to allow it to be set in motion by its actuating spring to sound an alarm.
Figure v 1' is a plan view of the apparatus, illustrating my invention. Fig. 2 is an elevation. 1
Similar letters of reference indicate corresponding parts. A is a collapsible air-holder with a pipe, B, for inflating it by air forced in by a pump or other means and having a cock,
0, for securing the air. D is the pipe of lead, or other fusible substance, connected with the holder, and arranged throughout the building where it will be most exposed to fire. R I is a lever connected with the holder, so that when it is inflated the spring J will be extended. K
is a detent connected with said lever and arranged with an arm, L, of a bell-hammer of an alarm mechanism, N, that when the holder is inflated it will engage said arm and prevent the mechanism from breaking, and when the
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US139292A true US139292A (en) | 1873-05-27 |
Family
ID=2208706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US139292D Expired - Lifetime US139292A (en) | Improvement in automatic fire-alarms |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US139292A (en) |
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0
- US US139292D patent/US139292A/en not_active Expired - Lifetime
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