US170408A - Improvement in door-alarms - Google Patents
Improvement in door-alarms Download PDFInfo
- Publication number
- US170408A US170408A US170408DA US170408A US 170408 A US170408 A US 170408A US 170408D A US170408D A US 170408DA US 170408 A US170408 A US 170408A
- Authority
- US
- United States
- Prior art keywords
- door
- frame
- wire
- improvement
- alarms
- 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
- DSBIJCMXAIKKKI-UHFFFAOYSA-N 5-nitro-o-toluidine Chemical compound CC1=CC=C([N+]([O-])=O)C=C1N DSBIJCMXAIKKKI-UHFFFAOYSA-N 0.000 description 2
- 241000940612 Medina Species 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR 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
- the object of our invention is to attach to a door-frame one or more wires or strings, in the form of a piano-string, so that when the door is opened the strings are touched by nibs attached to the door, and made to vibrate and give the alarm required.
- Figure 1 is an elevation, showing the inside of a door and frame, with a wire attached to the frame over the door.
- Fig. 2 is an elevation, showing the inside of a door and frame with the frame cut away so as to show a wire attached to the frame in a groove in the rabbet over the door.
- Fig. 3 is a section through A B, Fig. l and Fig. 2.
- Fig.1 is a wire stretched across over the door, and kept in place by the stays D D, which are screwed to the door-frame.
- D D which are screwed to the door-frame.
- F, Fig.- 1 is a notch out in the door-frame.
- G, Fig. 2 is the groove in the rabbet of the door-frame, in which the wire H is placed and held by the pins I and J.
- K, Fig. 2 is a pin driven into the top of the door, so that when the door is opened the pin K touches the wire H and causes it to vibrate.
- the pin K passes through the notch F, Fig. 1, when the door is opened or shut.
- a wire or string alarm arranged in such relation to the door as to be vibrated by a stud or projection thereon in the act of openin g or closing the door.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Description
E. SPOOR & EL'PQSEARLE.
DO0R-ALARM.-
I No.170, 4'08.
Patented Nov. 23, 1875.
\\\\\\\\\\\\\\\\\\\\\\\\\m\\\\\\\\\\\mx\\\\\\\\\\\\\\\\\ MNH HER. WASHINGTON D C MPEIERS, PNOT I UNITED STATES PATENT OFFICE.
DAVID E. SPOOR AND EDWARD P. SEARLE, OF MEDINA, NEW YORK.
IMPROVEMENT IN DOOR-ALARMS.
Specification formingpart of Letters Patent No. 170,408, dated November 23, 1875; application filed August 25,1875.
To all whom it may concern:
Be it known that we. DAvID E. SPooR and EDWARD P. SEARLE, of the town of Medina, in the county of Orleans, State of New York, have invented a new and useful Improvement in Door-Alarms, which improvement is fully set forth in the following specification, reference being had to the accompanying drawings.
The object of our invention is to attach to a door-frame one or more wires or strings, in the form of a piano-string, so that when the door is opened the strings are touched by nibs attached to the door, and made to vibrate and give the alarm required.
Figure 1 is an elevation, showing the inside of a door and frame, with a wire attached to the frame over the door. Fig. 2 is an elevation, showing the inside of a door and frame with the frame cut away so as to show a wire attached to the frame in a groove in the rabbet over the door. Fig. 3 is a section through A B, Fig. l and Fig. 2.
0, Fig.1, is a wire stretched across over the door, and kept in place by the stays D D, which are screwed to the door-frame. E, Fig.
1, is a nib screwed to the door, so that when the door is opened it touches the wire 0, and
causes it to vibrate. F, Fig.- 1, is a notch out in the door-frame. G, Fig. 2, is the groove in the rabbet of the door-frame, in which the wire H is placed and held by the pins I and J. K, Fig. 2, is a pin driven into the top of the door, so that when the door is opened the pin K touches the wire H and causes it to vibrate. The pin K passes through the notch F, Fig. 1, when the door is opened or shut.
Now, when the door is opened, the nib E, Fig. 1, touching the wire 0, and the pin K, Fig. 2, touching'the wire H, both wires are made to vibrate, and the alarm is given.
What we claim as our invention isv A wire or string alarm, arranged in such relation to the door as to be vibrated by a stud or projection thereon in the act of openin g or closing the door.
DAVID EMMORY SPOOR. EDWARD IAYSON SEARLE.
Witnesses HENRY A. Claims, EDWARD PossoN.
Publications (1)
Publication Number | Publication Date |
---|---|
US170408A true US170408A (en) | 1875-11-23 |
Family
ID=2239816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US170408D Expired - Lifetime US170408A (en) | Improvement in door-alarms |
Country Status (1)
Country | Link |
---|---|
US (1) | US170408A (en) |
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0
- US US170408D patent/US170408A/en not_active Expired - Lifetime
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