US975186A - Burglar-alarm sash-lock. - Google Patents

Burglar-alarm sash-lock. Download PDF

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Publication number
US975186A
US975186A US49221209A US1909492212A US975186A US 975186 A US975186 A US 975186A US 49221209 A US49221209 A US 49221209A US 1909492212 A US1909492212 A US 1909492212A US 975186 A US975186 A US 975186A
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United States
Prior art keywords
sash
alarm
casing
burglar
lock
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Expired - Lifetime
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US49221209A
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Morris Wheeler
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Individual
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Priority to US49221209A priority Critical patent/US975186A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
    • H01H3/161—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid

Definitions

  • FIG. 1 shows a fragment of a windowsash in outline and the window-frame and lock in section on the cutting plane 1, 1, of Fig. 2.
  • Fig. 2 shows the window-frame in face view.
  • Fig. 3 is a diagrammatic illustration of my said device.
  • the object of my invention is to provide a sash-lock in combination with an electrically actuated alarm mechanism which is so arranged and constructed that any motion in the direction of opening the sash will cause the alarm to sound, also to permit setting the sash for ventilation, as for bed-rooms, to such a point as will still prevent entrance without moving the sash, and when moved, cause the alarm to sound.
  • I provide a metal casing A having a face plate 7) and to said casing are attached binding-posts e (Z whereof thelatter is insulated at e on each side of said casing and held by a screw which passes through an enlarged hole g in said casing and thereby prevents contact of said screw with the casing A and on the inside of said casing and on the head of said screw is placed a spring 70 which is insulated from the casing on its edges and into said casing is placed an eccentric cam j which turns on a shaft h and on said shaft is wound a coiled spring 71 whereof one end is held by the side of the casing, and said spring is provided with a spring-arm 6 under said cam, whereby said cam is lifted and contacts with the sash B whereby it is actuated when the sash is moved.
  • binding-posts e Z whereof thelatter is insulated at e on each side of said casing and held by a screw which passes through an enlarged hole g in said casing and
  • a chamber Z is cut out of the Window frame to make room for the binding posts, and the contact-face of the cam j is provided with teeth m.
  • a key-post h on one end of the shaft 7L receives a key by means of which said shaft and its cam may be moved against the pressure of the arm 2' to release the cam j from the sash B so that the latter may be operated. By simply inverting the part A it may be applied to an upper window sash.
  • Fig. 3 In Fig. 3 is shown a circuit D and in it the battery E, alarm C and look A.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Burglar Alarm Systems (AREA)

Description

M. WILEL-ILER.v
BURGLAR ALARM. BASH LOOK.
APPLICATION FILED APBHZG, 1909.
Patented Nov. 8, 1910.
Jay;
MORRIS WHEELER, OF CHICAGO, ILLINOIS.
BURGLAR-ALARM SASI-I-LOCK.
Specification of Letters Patent.
Patented Nov. 8, 1910.
Application filed April 28, 1909. SeiiaI No. 492,212.
To all whom it may concern:
Be it known that I, Monms -Wiinnnnn, a citizen of the United States, residing 111 Chicago, in the county of Cook and State of.
Illinois, have invented certain new and use ful Improvements in Burglar-Alarm Sash- Locks, of which the following is a full and correct specification, reference being had to the hereto-accompanying drawing, forming a part hereof, and in which Figure 1 shows a fragment of a windowsash in outline and the window-frame and lock in section on the cutting plane 1, 1, of Fig. 2. Fig. 2 shows the window-frame in face view. Fig. 3 is a diagrammatic illustration of my said device.
Like reference letters denote like parts throughout.
The object of my invention is to provide a sash-lock in combination with an electrically actuated alarm mechanism which is so arranged and constructed that any motion in the direction of opening the sash will cause the alarm to sound, also to permit setting the sash for ventilation, as for bed-rooms, to such a point as will still prevent entrance without moving the sash, and when moved, cause the alarm to sound. To attain said desirable ends I construct and apply my said new device in substantially the following manner, to wit:
I provide a metal casing A having a face plate 7) and to said casing are attached binding-posts e (Z whereof thelatter is insulated at e on each side of said casing and held by a screw which passes through an enlarged hole g in said casing and thereby prevents contact of said screw with the casing A and on the inside of said casing and on the head of said screw is placed a spring 70 which is insulated from the casing on its edges and into said casing is placed an eccentric cam j which turns on a shaft h and on said shaft is wound a coiled spring 71 whereof one end is held by the side of the casing, and said spring is provided with a spring-arm 6 under said cam, whereby said cam is lifted and contacts with the sash B whereby it is actuated when the sash is moved.
A chamber Z is cut out of the Window frame to make room for the binding posts, and the contact-face of the cam j is provided with teeth m. A key-post h on one end of the shaft 7L receives a key by means of which said shaft and its cam may be moved against the pressure of the arm 2' to release the cam j from the sash B so that the latter may be operated. By simply inverting the part A it may be applied to an upper window sash.
In Fig. 3 is shown a circuit D and in it the battery E, alarm C and look A.
As shown in Fig. 1 the cam is contacting the spring 70 and thereby is completed the circuit through the screw f but when in normal position said parts are not in contact and the circuit is broken.
hat I claim is:
The combination with a window frame and a sash therefor, of a metallic casing on the window frame, a key operable shaft journaled in said casing, a cam on said shaftand contacting with said sash, a contact-spring held by and insulated from said casing, an electric circuit connected to the contact-spring and to the casing, and an alarm in said circuit.
MORRIS WHEELER. Witnesses JOHN P. MARSH, WM. ZIMMERMAN.
US49221209A 1909-04-26 1909-04-26 Burglar-alarm sash-lock. Expired - Lifetime US975186A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US49221209A US975186A (en) 1909-04-26 1909-04-26 Burglar-alarm sash-lock.

Applications Claiming Priority (1)

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US49221209A US975186A (en) 1909-04-26 1909-04-26 Burglar-alarm sash-lock.

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US975186A true US975186A (en) 1910-11-08

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