US184773A - Improvement in burglar-alarms - Google Patents
Improvement in burglar-alarms Download PDFInfo
- Publication number
- US184773A US184773A US184773DA US184773A US 184773 A US184773 A US 184773A US 184773D A US184773D A US 184773DA US 184773 A US184773 A US 184773A
- Authority
- US
- United States
- Prior art keywords
- alarms
- burglar
- improvement
- hammer
- door
- 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
- 210000002445 Nipples Anatomy 0.000 description 6
- 210000002816 Gills Anatomy 0.000 description 4
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B45/00—Alarm locks
Definitions
- l preferably hollow, so as to be light.
- Burglar-alarms have been made with a nipple for a percussion-cap and a spring-hammer, that explodes the same if an attempt is made to open the door or window with which it is connected.
- My invention is in the class of alarms aforesaid; and consists in the combination, with the spring-hammer and nipple, of a sliding wedge-catch, which serves a threefold purpose: it catches the hammer when the alarm is cocked for use, -it is the device that is moved by the door to set oiil the alarm, and it serves as a block to prevent the door being openr-d.
- Figure 1 is a side view, partially in section, ofthe alarm as set for use
- Fig. 2 is a plan ofthe same.
- the base a is in the form of a Wedge, and At the thicker4 end are the spurs or prongs b, that enter the carpet or oor, and prevent the alarm sliding when inserted with the point of the wedge beneath the door.
- the base a Upon the base a is the nipple d for a detonating-cap, and the fulcrulmv-standard c for the hammer f.
- the contractile springA g between f and a, serves t0 re the cap when the tail h ofthe hammer is liberated from the catch i upon the sliding wedge l.
- This wedge is preferably hollow, for lightness, and connected, by the screws 0, to the base a, said screws going through slots, so that the wedge will move easily upon the base a, if the door is pressed against it, thereby unlatching the hammer-tail, and allowing the hammer to explode the cap.
- This wedgecatch will prevent the door being swung open, even if the alarm should fail to frighten away robbers, the Wedge acting as a block beneath the door.
Landscapes
- Burglar Alarm Systems (AREA)
Description
l preferably hollow, so as to be light.
UNITED STATES PATENT OFFICE.
HARRY GILL, OF NEW YORK, N. Y.
IMPROVEMENT IN BURGLAR-ALARMS.
Specification forming part of Letters Patent N o. 184,773, dated November 28, 1876; application filed September 27, 1876.
To all whom it may concern:
Be it known that I, HARRY GILL, ofthe city and State of New York, have invented an Improvement in Burglar-Alarms, of which the following is a specification:
Burglar-alarms have been made with a nipple for a percussion-cap and a spring-hammer, that explodes the same if an attempt is made to open the door or window with which it is connected.
My invention is in the class of alarms aforesaid; and consists in the combination, with the spring-hammer and nipple, of a sliding wedge-catch, which serves a threefold purpose: it catches the hammer when the alarm is cocked for use, -it is the device that is moved by the door to set oiil the alarm, and it serves as a block to prevent the door being openr-d.
In the drawing, Figure 1 is a side view, partially in section, ofthe alarm as set for use;
and Fig. 2 is a plan ofthe same.
The base a is in the form of a Wedge, and At the thicker4 end are the spurs or prongs b, that enter the carpet or oor, and prevent the alarm sliding when inserted with the point of the wedge beneath the door. Upon the base a is the nipple d for a detonating-cap, and the fulcrulmv-standard c for the hammer f. The contractile springA g, between f and a, serves t0 re the cap when the tail h ofthe hammer is liberated from the catch i upon the sliding wedge l. lThis wedge is preferably hollow, for lightness, and connected, by the screws 0, to the base a, said screws going through slots, so that the wedge will move easily upon the base a, if the door is pressed against it, thereby unlatching the hammer-tail, and allowing the hammer to explode the cap. This wedgecatch will prevent the door being swung open, even if the alarm should fail to frighten away robbers, the Wedge acting as a block beneath the door.
This alarm, although especially adapted to l HARRY GILL. Witnesses:
GEO. D. WALKER, GHAs. H. SMITH.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US184773A true US184773A (en) | 1876-11-28 |
Family
ID=2254178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US184773D Expired - Lifetime US184773A (en) | Improvement in burglar-alarms |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US184773A (en) |
-
0
- US US184773D patent/US184773A/en not_active Expired - Lifetime
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