US783996A - Burglar or fire alarm system. - Google Patents

Description

PATBNTED FEB. 28, 1905.

-J. W. GULP.

BURGLAR 0R PIRE ALARM SYSTEM.

APPLIATION FILED TUNE 25,1904.

Alfo'rney manwli SSS S..

Lillina "i83,996.

Patented February 28, 1905,

PATENT Tirion..

IUI-'IN W. CULI), OF ELKHART, INDIANA, ASSIGNOR TO MODERN 'BUlii-lIn/-ilt & FIRE ALARM CUMIANY, OF lilLKI-IART, INDIANA. l

BUWGLAW OH FIRE ALAFiIVl SYSTEM.

SPECIFICATION forming part of Letters Patent No. 783,996, dated February 28, 1905.

Application filed June 25,1904. Serial No. 214,197.

.To f/,ZZ when?, if; T11/my concern:

Be it known that I, J onN W'. CULP, a citizen of the United States, and a resident oi' Elkhart, in the county oi Elkhart and State oi Indiana, have made a certain new and useful Invention in Burglar or Fire Alarm Systems; and I declare the following to be a Full, clear, and exact description oi' the same, such as will enable others skilled in the art to which it ap- IO pertains to make and use the invention, relerence being' had to the accompanying' drawing, and to letters or figures oi' reference marked thereon, which form a part of this speciiication. The figure is a vertical longitudinal sectional I5 View illustrating' the invention.

The invention relates to means for giving notice in case of iire or burglary in 4buil-dings; and it consists in the novel construction and combinations ot' parts, as hereinafter set forth.

2O In the accompanying' drawing, illustrating the invention, the letter a designates an outer metallic case which is designed to be attached to the outer wall of the building' to be protected. This case is provided with a tubular extension (I, which projects from the rear of the case into the building. .It is also provided with a drop-door .whereby access can be had to the interior, such door having a suitable lock. as at c. To the door is connected near its hinged portion an inside i'lat spring device a', which is designed when the door is opened to come in contact with the inside case e and deenergize the magnet M, thereby setting' oli'A the alarm in the inner ease.

This provision is made to guard against tampering with the lock. The door is designed to be provided with a strong wire-netting at Within the outer case is located the inner case c', which is oi' similar form to the outer 40 case, but a little smaller, so that it will .have an interval around it between its wall and that ot the outer case. insulating-strips f are placed between the inner and outer cases. The inner ease is also provided with 'a tubular extension projecting in rear within the tubular extension of the outer case and insulated therefrom. The inner case is 'designed to contain the alarm and signal devices and when placed within the outer case is entirely insulated therefrom and from its tubular extension, except in so Vtar as the coliductingwires hereinafter described are concerned. The alarm-bell is indicated at a and its electromagnet at y.) within the inner case, which also contains the red light f] ol incamleseent characteigthe wires Poi' which extend th rough the tubular extension to the source ol. electric-light current. The wires (i and 8 oil the alarm-circuit also extend through the tubular projections olvl the cases into the buildings. 6o

rI `lie'ii1si .le of the building is4 wired in connection with the windows and doors, as at 5, and there is also provided alongI the walls ol. the building a system et' 'fusible wiring, as at l0. This wiring is designed to melt apart at a low degree oi'l heat to ent out the electromagnet N. Y

M denotes an electromagnet which is normally in circuit, thus holding its armatureswitch V out oig engagement with contactpoint l/V.

N is an electronnignet normally energized by battery J and holdingI armature-switch Iv out of touch with contact-point U.

The electric-light wiringl l.J is provided with 7 5' a break near the magnet N and a pivoted switch Q, which is held out ot contact with the other terminal et' said break by the armature-switch l. when in circuit, said switch having an insulated. arln it, serving as a rest or 8O catch. In this manner it designed to cut out the electric-light current b v the energization ot' the magnet N, which is normally in circuit. The switch-armature V oiAl magnet M is connected by wire 7 to battery' K. 85

l/V denotes a Contact in connection with the alarm-wire 6, and when the armature-switch V falls through any short-eircuiting or breaking ot the normally closed circuit in the inagnet M the current will pass' through the wires 90 (i, 7, and 8 andv battery K, soundingI the alarm.

The wire 2 leads Jfrom one side Oi' battery JA, forming circuit with the inside tubing' and case and extending by wire 3 to one side ot' magnet M. The other wire, 4, from battery J forms circuit with the outside tubing and case, which is connected with wire 5, which extends to suitable connections upon doors and windows and continues to the other side of magnet M. The fusible metal wiring 10 extends from battery J through such parts of the building as are liable to outbreaks of lire and is fully connected with one side of magnet N. The other wire, 11, from battery J is also in connection with magnet N, which is normally in closed circuit. Wires 12 and 14 are connected with wiring 5 and provided with switch 13, which may be closed when it is desired to cut out the wiring system to the doors and windows without denergizing magnet M. The contact part U is connected to the wire L of battery J by wire 16, and the armature-switch I is connected by wire 17 to the wire Q of the same battery.

Then the door or window connection is broken, magnet M will be denergized and its switch-armature will fall, engaging contact W' and putting the alarm-circuit in action for battery K. Should the fusible wiring melt at any point, the magnet N will become deenerg'ized and its switch-armature l will drop and close circuit in contact U, denergizing magnet M and allowing the switch-armature Vto drop and closing the bell-circuit. At the same time the switch Q will be released and will close the electric-light circuit. ln the case of burglary when the circuit of the wiring' of the windows and doors is broken the bell-alarm will ring; but when tire occurs, short-circuiting' the fusible-wire system, both the alarm-circuit and the light-circuit will be put in action.

Having described the invention, what l claim, and desire to secure by Letters Patent, 1s4

1. The electric alarm, consisting of the outer case, and its tubular extension, forming a part ol. a protection-circuit normally closed on an electromagnet, and including an inner case, and its inner tubular extension, insulated from said outer case and its tubular extension, and containing an alarm device having an electromagnet in a normally open circuit, the armature of the electric magnet in the normally closed circuit moving to close the normally open circuit upon the denergization of its magnet, substantially as specified.

2. The electric alarm, consisting of the outer case, forming' a part of a burglar-protection circuit normally closed on an electromagnet, and including' aninner case, insulated from said outer case, and containing' an alarm device, having an electromagnet in a normally open circuit, the armature of the electric magnet in the normally closed circuit moving to close the normally open circuit upon the deenergization of its magnet,an electric light in a normally open circuit having a switch in insulated engagement with a second switch-armature, a second normally closed circuit, an electromagnet energized thereby to normally hold said second switch-armature open and a fusible wire in said second closed circuit, substantially as specified.

ln testimony whereotI l aiiiX mysignature in presence of two witnesses.

JOHN W CULP.

Witnesses:

A. Gr. GEDNEY, EMoRY H. BoGLEY.

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