US153779A - Improvement in burglar-alarms - Google Patents

Improvement in burglar-alarms Download PDF

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US153779A
US153779A US153779DA US153779A US 153779 A US153779 A US 153779A US 153779D A US153779D A US 153779DA US 153779 A US153779 A US 153779A
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Prior art keywords
slide
lever
burglar
alarms
improvement
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    • 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

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  • WITNESSES INVENTOB L M I ATTBBNEYS.
  • My invention consists of a lever to hold the escapement of aclock mechanism from working, and a slide to raise the lever and allow.
  • the escapement to work so combined with a clock mechanism and an alarm-bell that the slide may be set by a door or window, so 1 to be moved in case the door or window is opened, and lift the lever oil from the escapement and allow the'bell to sound; and the connection of the slide and lever is such that they can be disconnected and allow the slide to be pushed back from the door or window during the day-time without allowing the bell to.
  • F is a slide with a beveled or inclined point, G, and having a couple of stud-pins, H, projecting from it, between which the weighted lever E passes, so that when the slide is moved upward it will liftv the lever from the verge and free the appara-. tus so as to sound.
  • This slide is to be set in such relation to a door or window that, in case the door or window is opened when the slide is pulled down, it will be pushed up by the door or window, and will lift the lever off the verge, so that the'hammer will be operated.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)

Description

A. NEVLING.
Burglar-Alarms. v No.153,779. Paten tedAug. 4,187 4.
WITNESSES: INVENTOB L M I ATTBBNEYS.
THE GRAPHIC CO- QHGID-LIT'PLSSBHH PARK PLACEJLY.
UNITED STATES PATENT OFFICE.
ABRAHAM NEVLING, O13 GLEN HOPE, PENNSYLVANIA.
IMPROVEMENT IN BURGLAR-ALARMS.
Specification forming part of Letters Patent N 153,779, dated August 4, 1874; application filed May 29, 1874.
To all whom it may concern:
Be it known that I, ABRAHAM NEVLING, of Glen Hope, in the county of Olearfield and State of Pennsylvania, have invented a new and Improved Burglar-Alarm, of which the following is a specification:
My invention consists of a lever to hold the escapement of aclock mechanism from working, and a slide to raise the lever and allow. the escapement to work, so combined with a clock mechanism and an alarm-bell that the slide may be set by a door or window, so 1 to be moved in case the door or window is opened, and lift the lever oil from the escapement and allow the'bell to sound; and the connection of the slide and lever is such that they can be disconnected and allow the slide to be pushed back from the door or window during the day-time without allowing the bell to.
verge by said arm, or it may be by the hammer-lever, so as to prevent the spring from working the hammer when it is not required to sound the bell. F is a slide with a beveled or inclined point, G, and having a couple of stud-pins, H, projecting from it, between which the weighted lever E passes, so that when the slide is moved upward it will liftv the lever from the verge and free the appara-. tus so as to sound.
This slide is to be set in such relation to a door or window that, in case the door or window is opened when the slide is pulled down, it will be pushed up by the door or window, and will lift the lever off the verge, so that the'hammer will be operated.
To enable the slide to be shoved back during the day without freeing the alarm, the lever E is lifted out from between the studpins and rested on the pin J.
I do not claim the combination of a sliding .bar and a holding device with the spring
US153779D Improvement in burglar-alarms Expired - Lifetime US153779A (en)

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