US109971A - Improvement in alarm-attachments - Google Patents
Improvement in alarm-attachments Download PDFInfo
- Publication number
- US109971A US109971A US109971DA US109971A US 109971 A US109971 A US 109971A US 109971D A US109971D A US 109971DA US 109971 A US109971 A US 109971A
- Authority
- US
- United States
- Prior art keywords
- alarm
- bolt
- door
- attachments
- improvement
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
Definitions
- Fi ure 1 re (Fi ure 1 re )resents a view of the door and bolt with.
- Figure 2 represents an end view of the alarm.
- l igure 3 represents a view of the bolt with its end over the leverthat causes the alarm.
- Figure 4 represents a perspective view of the lever that operates the alarm.
- my invention relates to that class of alarms that is operated by the bolt or lockot' a door, and consists, mainly, in the construction of the keeper which secures the end of-the bolt, and the lever which is hinged on the outer partof the same.
- a in the drawing represents a door, having on its inside an ordinary sliding bolt of ant-suitable description.
- This keeper or nose is made larger than the door- -bolt, and is provided with a cross-slot, F, as will be hereinafter set forth.
- G represents a lever, having three angles, as shown in'fig. 4.
- the other angle extends ashort distance outward, and is connected by a wire,-H, to an alarm. I, of any suitable description, which issecured upon the doorframe or wall of the premises.
- the bolt 13 on the door is passed into the keeper 0, under. the angle y ofthe lever G, which lies in the slot F, so that when the 1 door is pushed inward the bolt presses against the angle i ,'carryingdownward the angle 5, and causing the wire H to soundthe alarm I.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Description
J.H.THORP.
, Burglar Alarm. I N0.-10'9,971. Patented Dec. 6, 1870 minesses Q w 1 Inventor.
can state JAMES H. THORP, on NEW YORK, NY.
Letters PatentNo. 109,971,- dated December 6, 1870.
\MPROVEMENT IN ALARM-ATTACHMENTS.
The Schedule referred to in these Letters Patent and making part of the same.
To all whom it may concern Be it known that I, James H. 'luonr, of New York City, New York, have invented certain new and, useful Improvements in Alarm-Attachmen ts for Doors and Windows; and do hereby declare that the follow ing is a. full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon making a part of this specification.
Fi ure 1 re )resents a view of the door and bolt with.
the alaI'm-attachment.
Figure 2 represents an end view of the alarm. I
l igure 3 represents a view of the bolt with its end over the leverthat causes the alarm.
Figure 4 represents a perspective view of the lever that operates the alarm.
The nature of my invention relates to that class of alarms that is operated by the bolt or lockot' a door, and consists, mainly, in the construction of the keeper which secures the end of-the bolt, and the lever which is hinged on the outer partof the same. A in the drawing represents a door, having on its inside an ordinary sliding bolt of ant-suitable description.
1) represents the door-frame, and to which is attached the bolt-keeper G.
.This keeper or nose is made larger than the door- -bolt, and is provided with a cross-slot, F, as will be hereinafter set forth.
G represents a lever, having three angles, as shown in'fig. 4.
' The lower angle a; of thislever is hinged to the under part of the keeper 0, as shown at a a, fig. 1, thus allowing the angle y to lie in the slot F of-said keeper.
The other angle: extends ashort distance outward, and is connected by a wire,-H, to an alarm. I, of any suitable description, which issecured upon the doorframe or wall of the premises.
- To operate the alarm, the bolt 13 on the door is passed into the keeper 0, under. the angle y ofthe lever G, which lies in the slot F, so that when the 1 door is pushed inward the bolt presses against the angle i ,'carryingdownward the angle 5, and causing the wire H to soundthe alarm I.
\Vhen it is desired to bolt the door so as to not' and the door-bolt 13, all constructed and operating substantially asset forth.
JAMES H. THORP. Witnesses:
W. H. BURRIDGE,
, D. L. HUMPHREY.
are I com. I
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US109971A true US109971A (en) | 1870-12-06 |
Family
ID=2179443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US109971D Expired - Lifetime US109971A (en) | Improvement in alarm-attachments |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US109971A (en) |
-
0
- US US109971D patent/US109971A/en not_active Expired - Lifetime
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