US819804A - Combined sash-lock and burglar-alarm. - Google Patents

Description

PATENTED MAY 8, 1906.

J. B. RIDGE.

COMBINED SASH LOOK AND BURGLAR ALARM.

APPLICATION FILED MAY 20, 1905.

UNITED STATES PATENT OFFICE;

JAMES B. RIDGE, OF BROOKLYN, NEW YORK.

COMBINED SASH-LO CK AND BURGLAR-ALARM.

To all whom, it may concern:

Be it known that'I, J AMES B. RIDGE, a citizen of the United States, residing at Brooklyn, county of Kings, and State of New York,

have invented certain new and useful Im rovements in, a Combined Sash-Lock and urglar-Alarm, of which the following is a specification.

My invention relates to combined sashlocks and burglar-alarms.

The object of the present invention is th provision of a simple, inexpensive, and compact device of the character set forth, which can be attached to a window-frame and sash by any one of ordinary mechanical ability, and which when in position will be sunk in the sash and. win ow-frame so as not to mar the appearance of the window, said device be ing designed to automatically lock thesash if it is raised or opened and thereupon to close an electrical circuit and operate a visual or audible signal, or both, and having means whereby the locking device and circuit-closer may be rendered. inoperative to lock the sash or sound or display the signal when it is desired to open the window or to unlock the device.

Having the foregoing object in view the invention embraces certain improved features of construction and novel combinations of parts set forth in detail hereinafter and recited in the appended claims.

In the accompanying drawings, Figure 1 is a sectional elevation showing the invention applied to a window-frame and window-sash and with the parts locked together; Fig. 2, a similar view showing how the locking-bolt can be pressed back either to prevent looking or to release the bolt after it has once looked the window; Fig. 3, a side view with certain parts broken away to show how the parts appear when the window is closed Fig. 4, de-

tailed views of the spring-contact and lockingbolt Fig. 5, details of the releasing device, 4 5 {and Fig. 6 a diagram of the electrical connec- 7tion which may be employed.

The numeral 1 designates an ordinary win-.

dow-frame, and 2 the window-sash. The locking device and spring-contact are sunk into the window-frame 1 and comprise a faceplate 3, having an opening 4 and connected to the frame 1 by screws 5, a spring metal contact 6, connected to the face-plate 3 by a screw 7, but insulated from said face-plate by insulating material 8, said spring-contact 6 having a lip 9 adapted to bear against the Specification of Letters Patent.

Application filed May 20, 1905.

Iratented May 8, 1906.

Serial No. 261,371.

rear of the face-plate 3, and securely connect,- ed to the spring-contact 6 is a locking-bolt 10,, which passes through the opening 4 and is surrounded by an insulating-bushing 11, IIIOV-m able with it, which prevents said locking-bolt from touching the face-plate 3. The lockingbolt is arranged at a slight angle to the face of face-plate 3 and is provided with a notched portion 12, whereby said locking-bolt is the better adapted to snap into and engage with, a locking-plate 13, secured to the window. sash at 14 and proviileil with an opening 15, which receives the locking-bolt and the margin of which engages the notched portion 12 of the locking-bolt. Secured to the locking plate 13 and extending back into the windowsash 2 is a tubular casing 16, having a slot 17. Movable in the tubular casing 16 is a releasing-bolt 18, which may be made square to prevent its turning in the casing and which has a reduced end adapted to fit in the open-. I

ing 15 to press back the locking-bolt out of engagement with said opening. Secured to the releasing-bolt is a screw-threaded thumbpiece or finger-hold 19, whose shank plays in the slot 17 and also in a slotted guard-plate 20, secured to the window-sash.

Circuit- wires 21 and 22 are secured, respectively, to one of the screws 5 and to the screw 7, and these maybe included in any alarm-cir cuit desired; but I find it desirable to employ signals or alarms and circuit arrangements such as set forth in Fig. 6, where the battery 23 may consist of as many cells in multiple series as may be desired, sixteen cells, four to each series, being a satisfactory number. One circuit-wire 21 will lead to one pole of the battery, and the other circuit-wire 22 will constitute one of the feed-wires, the remaining feed-wire being shown at 24. An electric bell or an annunciator 25 can be conveniently located in the building to indicate the window attacked, and a small incandescent light, such as a four-and-a-half volt, four-candlepower lamp 26 can be connected to the circuits, so as to illuminate the face of the annunciator, while another incandescent light 27 can be arranged on the outside of the building adjacent the window, so as to light up when the window is raised When the window is down, the locking bolt 10 is pressed back by the sash, so that the contact-spring 6 does not touch the faceplate 3, and the circuit is thus open; but immediately the window is raised sufficiently for the locking-bolt to snap into the opening 15 further movement of the window from the outside is impossible and the release of the locking-bolt permits the contact-spring 6 to engage face-plate 3, thus closing the circuit and lighting the lights and sounding the alarm. A suitable switch 28 can be used so that the device can be employed as a sashlock by the occupants of the building without sounding the alarm. When it is desired to raise or lower the window after it has been locked, the thumb or finger hold 19 can be grasped and the locking-bolt pressed out of the opening 15 by the releasing-bolt 18, or if the locking-bolt is not in the opening 15 and it is desired to prevent locking of the sash the sash can be raised or lowered Without interference by operating the releasing-bolt, as above set forth, as the releasing-b olt will then slide past the locking-bolt and keep the latter pressed back. As an additional safeguard I sometimes prefer to employ a supplemental contact device comprising a spring-wire 30, secured to the plate 3 at 31 and provided with a roller 32, journaled to its free end, which is received in a recess 33 in the window-sash when the sash is down, but is pressed back into engagement with electrical contact 34 as soon as the sash is raised, thus closing the circuit and displaying and sounding the signals. This device insures the giving of the alarm even if the window-pane be broken and the finger-hold 19 pushed back to prevent the main contact 6 from completing the circuit.

I wish it understood that the present invention is not limited to use in connection with window-sashes and can just as well be employed on doors and in other connections.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a combined window-sash lock and burglar-alarm, the combination with the window-frame and the window-sash, of a springactuated locking-bolt carried by one of them and adapted to positively engage or look with the other of them, circuit-controlling contacts normally separated but adapted to engage each other when the locking-bolt is locked, and an independent retracting or releasing device for disengaging or preventing engagement of the locking-bolt.

2. In a combined window-sash lock and burglar-alarm, the combination with the window-frame and the window-sash, of a metal face-plate having an opening and secured to one of them, a leaf contact-spring secured to said face-plate and provided with a lockingbolt projecting through the opening aforesaid, insulation normally preventing elec trical contact of the spring with the faceplate, and means on the other of them for disengaging or preventing engagement of the locking-bolt. v 3. In a combined window-sash lock and burglar-alarm, the combination with the window-frame and the window-sash, of a metal face-plate having an opening and secured to one of them, a leaf contact-spring secured to said face-plate and provided with a lockingbolt projecting through the opening aforesaid, insulation normally preventing electrical contact of the face plate with the spring, insulation preventing contact of the locking-bolt with the faceplate, and means on the other of them for disengaging or preventing engagement of the locking-bolt.

In testimony whereof I hereunto aflix m y signature in presence of two witnesses,

JAMES B. RIDGE.

WVitnesses J osnrn WALsI-I. F. I-IoLE'rEN.

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