US1082667A - Automatic resetting alarm cut-out for electric burglar-alarm systems. - Google Patents

Description

wi lwcooeo: 7 I vwewlioz I. I r v M b A m I J. P. WILLIAMS & H. HUH'N. AUTOMATIC RESETTING ALARM GUT-OUT FOR ELECTRIC BURGLAR ALARM SYSTEMS. urymuxon FILED DECJ, 1910.

1,082,667. Patentd Dec. 30, 1913.

in the county and UMTED sa a'ras earner castes J' WILLIAMS D HERMANN HUI-IN, OF NEW YORK, N. Y.,'- ASSIGNOHE- I0 ELECTRIC-BANK PRGIECTION COMPANY, A CORPORATION OF DELAWAIQE AUTOMATIC gESETTIN ALARM CUT-OUT FOB ELECTRIC BTFRGLAR- ALARM SYSTEMS.

Specification of Letters Patent.

Patented Dec. 39, 1 M13,

Application filed December 16, 1910. Serial l lo. 597,705.

Be it known that we, JoHN P. WILLIAMS and HERMANN HUHN, both citizens of the nited States, and residents of New York, State of New York, have invented certain new and useful Improvements in Automatic Resetting Alarm Cut- Outs for Electric Burglar-Alarm Systems, of which the following is a specification.

This invention relates to automatic alarm cut-outs for electricburglar-alarm systems, and it hasfor its object to provide electric protective means of the above class in which an electric protective circuit is automatically controlled to sound and cut out an alarm and the cut-out will be automatically reset after its period of operation.

Ourdnvention is designed to provide simple and improved means of certain and positive automatically-operative characteristics by which the operative status of the alarm circuits can be definitely governed tosound an alarm for a predetermined period of time and automatically reset to successively repeat the periods of alarm operation.

Our present improvements are particularly adapted for installation within electricallyprotected structures, such as a vault or safe, the door of which is provided with a mechanical time lock, so that in case an attack is made upon such a structure,- and an alarm sounded, the system is automatically reset after the alarm has been operated for a predetermined period of time, thus insuring perfect protection at all times.

Under the circumstances just indicated, where a mechanical time lock is employed, the door of the protected structure could not be opened by any mechanical means until the lapse of a predetermine period of time "as controlled by the time lock, and therefore, in case of an alarm being sounded, it the cut-out Within the cally reset itself or must be manually set, entrance to the vault is required for resetting the cut-out after each completed alarm period. and the vault would thus be without operative electrical protection until the time lock operated. Our automatic re-setting cut-out obviates this disadvant re and insures the protective status of the system at all times.

Automatic H cut-outs have been employed in electric protective systems, to control the vault does not automati operative periods of an alarm sounded when an attack is made, but unless such automatic cut-out is reset its operation disconnects the alarm circuit and the protective status is vitiated. The manual resetting of such autoinatic cut-outs requires entrance to the vault or protected structure within which the cut-out is usually installed in the class of burglar-alarm systems to which our improvements espec'iallyrelate, and the obvious disadvantages and weakness inherent in automatic cut-outs and alarm-circuit controlling devices which require manual resetting is entirely overcome by the improved means of our present invention by which the alarm is not only controlled in an operative status during predetermined periods and cut out after the period of operation, but is .auto-' matically reset for operation during the next ensuing period.

A further object of our invention is to provide cut-out means of the class described which will possess advantages in point of simplicity, etiectivene ss, positive operation, convenience and general efliciency.

In the drawings we have shown a diagram'matic. illustration of our automatic re setting cut-out mechanism in connection with the linings of an electrically-protected structure, such as a vault or safe, and the alarm circuits of a burglar-alarm system.

The type of burglar-alarm systems to which our improvements particularly rclate involve primarily a guarded structure protected by the burglixnalarm system,. which structure may be-a vault, safe, or otherapartment which it is desired to protect in a bank or other, building, and all the parts of the ,ystem that may be attacked or manipulated to cripple the system are within the protected structure or structures. The guarded structm'e is electrically protected by the system in such a manner that an unathorized attempt to gain entrance thereto by an attack upon the structure will operate an electrical circuit and sound an alarm, and our in'iprovements provide ineans to-automatically cut out the alarm and then automatically reset the cutout to permit'a successive operation of the alarm.

Referring to the drawings, 1 designates a portion of a vault, safe or' other structure to be guarded, the wall or frame thereof, shown at 2, and the liningshown at 3, be-

ing of conducting material. In the general I preferred arrangement of our improved automatic resetting alarm cut-out as herein illustrated, we have shown a suit-able clockwork, 4, mounted in a suitable case or cabinet, 5, which parts are protected in practical arrangement by i':iclo ure within the guarded structure 1. Shafts, as'at '6 and 7, are rcvolubly mountet within said cabinet in operative engagement with the gear train of the clockwork,4, and carried on the shaft (3 is a trip disk, 8, provided at its periphery with a recess, 9.

Under certain conditions, in the operation of our present invention and improvements, the protective circuit may sometimes be sustained in operative condition and the actuation of the alarm maintained, and in order to break the protective circuit after a predetermined period of time we employ a circuit-controller disk, 10, carried on the shaft 7 and provided with a peripheral recess, 11, having an insulating block, 12, atthe base thereof.

Suitably arranged, preferably within the casing 5, is a relay, l4, and pivctally mounted for co-active relation thereto is a springpressed trip lever, 15, provided at its free end with an insulating block, 16, and carrying an armature, 17, operating in connection with the core of the relay 14. Fixed to the free-end portion of the trip lever 15, and ranging toward the clockwork-4, is a trip arm, 18, which is ncrmally in engagement with the escapement mechanism of the clockwork and operates to release the clockwork when the relay 14 is energized to draw the armature 17 and trip lever 15 toward its core. Pivtrtally mounted on 'thefree end of thetrip lever 1.5 is a spring pressed trip dog, 19, provided," with an extension, 20, adapted to norm y enter the recess '9 of the trip disk 8. tecured to the insulating block 16 which is carried on the trip lever 15 is a conducting plate, 21, having spring contact finger-s, 22 and 23, which respectively contact normally with a long contact plate, 24, and a short contact plate, 25, both suitably mounted, and said fingers are adapted, when the lever 15 moves under action of the arinattire 17, to respectively contact with the long plate 24 and another short contact plate, 2G,siiitablyinonnted adjacent the short contact 25, as will be neatlily understood.

T he general circuits connecting the various parts of the electrical burglar-alarm system as employed in connection with the subject matter of our present invention may be arranged in any suitable or desired man net, and we have herein shown one preferred arrangement of circuits. which we will now proceed to describe.

From the pcsitive side of abattery,

a conductor, 28, extends to a spring contact nosaccr brush, 30, engaging the periphery of the circuit-controller disk 10. A conductor, 31, extends from the shaft 7 of :theicontroller disk 10 to the wall or frame 2 of the protected structure. A conductor, 32, extends; from the negative pole'of the battery27 to the long contact plate 24, and is in electrical connection with'the short contact plate25 through the fingers 22 and 23 of the conducting plate 21, and a conductor, 33, extends t'rofn the short contact plate 25 to the coil of the relay 14, from which a conductor, 34, extends to the lining 3 of the protected structure. A conductor, 35, ex tends from the short contact plate 26 to the magnet of a bell or gong alarm device, 36, which is in electrical connection with the conductor 31 through a branch conductor, 37'.

'lhe operation and advantages of our invention and improvements will be readily understood by those skilled in the art.

The drawing shows the position of the contacts and the relatively-operating parts and the circuits when conditions are nor mal, and in the positions shown the alarm circuit controlled'by the operation of the contacts is set in operative condition and ready for actuation in case of an attack upon the protected structure. With relation to the contacts it will be understood that the contacts 24 and 25 are normally closed and the contacts 24 and 26. are normally open. When an attack is made upon the protected structure, for instance by a drill or other tool contacting with the Wall 2 and lining 3, a circuit is estahlishcd'through the wall 2, the conductor 31, shaft 7 and controller disk 10, brush 30, conductor 28, battery 27 I conductor 32, coptact plate 24, conducting plate 21, contaetplate 25, conductor 33, relay 14, and conductor 34, to the lining3 of the protected structure. The relay 14 is then energized and attracts the ar causing movement of the lever 1 to vwithdraw the dog 19 from engagement," .with the recess 9 of the disk 8, and thissaction also withdraws the trip arm. 18 of the lever 'ature 17,

15 from-engagement with the escapeitocnt mechanism of the clockwork to releasefthe same. This movement of the trip leverf15 also causes the springfinger 23 to pass fthe short contact plate 25 and engage wit it.

the othershort contact plate 26, while the" it alarm circuit is then estahrevolution with the extension 20. of the cuit is retained in .the operativecondition just indicated, causing the actuation of the alarm, while the trip disk' 8' makes a gull 0g 19 bearing on the periphery thereof. 'When the full revolution of the disk 8'has been completed and the recess the extension 20, the latter enters the recess 9, and the movement of the lever;15-then causes the finger 23 to move back into contact with .the short contact plate 25, while the finger :22 remains in contact with the long contact plate 24, and at, thesame time the trip arm 18 engages the e'scapement mechanism and stops the clockwork. Thus, the alarm will .be in operation during one complete revolution of the trip disk 8, and

the alarm circuit is then broken and the cut-out automatically reset for again establishing the alarm circuit. The above described conditions follow where the short circuit between the wall 2 between other parts of the electrical protection of the guarded structure 1,. is only temporary. When such short circuit is prolonged or iermzuient, the actuation of the alarm would'bo continued because the coil of the relay 14 would still be energized by the completion of the alarm circuit through such short circuit, thus retaining the extension- 20 of the dog 19 from engagement with the recess 9 in the trip disk 8, and the alarm circuitwould then remain in operation and cause the, actuation of the alarm during several revolutions of the trip disk 8 and until the revolution of the circuit-controller disk 10 brought the brush 30 into contact with the insulating block 12 and thus broke the circuit. For instance, should the-penetrating tool used in attack upon the protected structure be left in contact with the wall 2 and lining 3 the alarm circuit-Would be closed and in operation until the circuitcontroller disk 10 made, say, one complete revolution, when the brush 30 would contact with the insulating block 12 and break' the alarm circuit, as will be readily understood.

The trip disk 8 may bc'adapted to any desired time for one complete revolutionand the circuit-controller disk 10 adapted to any desired longer period of time for revolution. For instance, the disk 8 may be regulated to a five minute period of revolution and the disk 10 to a one'ho'ur period.

It will he understood that the relative adjustment of parts is such that the disk 8 will make such a number of revolutions with respect to the disk l0 that the recess 9 is in front of the extension 20 of the dog 19 when the insulation 12 reaches the contact memher 30. I 4

It will be understood thatour improved automatic resetting cut-out means .maybe operatively adapted to either open or closed cir cuits, or to a'combinatior of open and 9 comes beneath and lining 3, or.

' operated ;by-

-means is operative cult and before its cut-out action thereon," said governing means comprising a movable closed circuit conditions, in electric burglaralarm protective systems, as will be readily understood.

1 VVe do not desire to be understood as limiting ourselves to the detail construction and arrangement of parts or circuits as herein shown and described, as it is manifest-that variations and modifications therein may be resorted to, in the adaptation of our invention to varying conditions of-use, without departing from the spirit or scope of our invention and improvements. We therefore reserve the rightto all such modificationsand variations'as properly fall within the scope of 01m invention and the terms of the following claims.

Having thus described our-invention, we claim and desire to secure by Letters \Patent:

1. In an alarm system, an electric protectivc system including an alarm circuit operatable to actuate an alarm, a motor mechanism, cut-out means to'r mechanism and in said alarm circuit to control the operation thereoftor a predetermined period of time, an electro-responsive device in shunt to the alarm, and means the action of said electro-responsive device to automatically govern the operation .of said cut-out means and thus permit successive and repetitive actuation of'tlie alarm during the period said cutrout to control the alarm cirmember governing theoperation of said mo- I tor-inechanism and supplementary mechanism go\-'erning the position of said movable member when said electro-responsive device is not energized.

2. In an alarm system, tivc system including an an electric protecalarm circuit op- 'eratahle to actuate an alarm, motor mechanism, cut-out means operated by said motor mechanism and in' thealarm circuit for controlling the operation thereof for a predetermined period of time. an electro-responsive device in shunt to the alarm, motor controlling means operated by the action of said electro-responsive device and governing the operation of said plementary means operative to control said motor controlling means to govern the operation of said alarm circuit for the actuation of the alarm duringa lesser period than the periodof control by said cut-out means, circuit contacts carried by means, and circuit contacts for closing the circuit through the electro responsive 'device or alarm and adapted to contact with the circuit contacts controlling means under different positions of said latter means.

3. In an alarm system, an electric 'protec motor mechanism, supcarricd' by said motor' ti've system including an alarm circuit opersaid motor controlling.

7 ftermined .5 being constituted by;a

. "ni c -ou and'hya contact in adapted to contact 10 an electro-magnet 'ed to respectively said motor mechanism and -30 atable to actuate an alarm,

rneaii's' id alarm circu'it'for a prederiod of time, saidgcut-out means revoluble disk in said alarm circuit and'operated' by said motor mechanismand=hav1ng an insulated point said alarmcircuit and with 'said insulated point, in shunt to the alarm, a -lcng contact, 24,-in said alarm circuit, short contacts, 25 and 26, in said shunt and alarm circuit respectively,

"eration ofthe operation of said motor mechanism, circuit contacts, 22 and-23, carried by said movable member and adaptcontact-with said long circuit contact and'said short circuit con tacts, a supplementary'revoluble disk operated by said motor mechanism and having a recess, and an automatic catch carried by said movable member and adapted to engage said recess.

v 4. In an alarm net and governing system, an electric pr'otec-.

' tive system including an alarm circuit ogeratable to actuate an alarm, a motor mec anism, automatic cut-outmeans operated by in said alarm circuit for controlling the operation thereof for a predetermined tro-responsive device in shunt to the alarm,

' contacts for closing the circuit through the electrc-responsive device or alarm,"a mov-- able member operated by the action of said electro-responsive device and governing the operation of said motor mechanism, circuit contacts carried by said movable member and adapted to contact with said first named contacts, and supplementary means operated b said motor mechanism and governing the position of said movable member when said elcctro-responsive device is not energized to control the alarm .circuit for the actuation of tln= alarm for a lesser period than the period of (C( HHX'Ol by said cut-out means.

In an alarm system,

operata'ole 1o actuate an alar1n, an electroresponsive device in shunt to the alarm, circuitcontacts comprised in said alarm c rr suit for closing the circuit throughthe lecu-c-rcsponsive device or alarm, a m vable member operated by the action of said eleclrc-responsivo (.evice, circuit contacts carp by saidinovable for controlling the op},-

a movable member. op- 'erated by the armatureof saidelectro-mag.

period of time, an elecan electric pro]- teem-c system including an alarm c rcuit contact with said first sponsive device isnot energized and for a predetermined period of ofsuch period.

, 6. In an alarm system anmelectric proa r i o'peratable to. actuate an alarm, a motor tective system including an member and adapted to j named circuit con- 7 'tacts, means for governing the position of said movable member when said electro-re-I time, and means. l j carried by said movable member for engaging said governing means'at the termination mechanism, cut-out means operated by; said motor mechanismand in said alarmcircuit for controllin the operation thereof for "a. predetermine magnet in shunt tothe alarm;

1 period-oi -time, an e'lectrm "means orclosing the circuit th'roughjjthe jmagnet or" alarm, means oper I electro-magnet and governing the operation of said motor mechanism,-ii1eanscarried by said last-mentioned governing Zinea'na' and operating to control said-'- means {to the alarmcircuit, and supplementary overnin the positi'o'n oi saidf mea 1s contro led by said electro magne eratable when said 'electro-magnet, 1s"i1ot :en-

ated by the-action. of said-- ean which.

i lidj pf ergized to control the; alarm circuit for the I actuation of the alarm 'for a lesserperiod tha'n the5period of control by said cut-out means. l,

7. In an alarm system an electric'fprotective'system including an alarm circuit operatable to actuate an. alarm, ,an electro-magnet in shunt to the alarm, means circuit through themagnet or alarm, motor controlling means operated'by the action of said electro-m'agnet, means carried by'said' for closing the motor controlling means and operating t0.'

control said means for closing said. alarm circuit, means for governing the position of said motor controlling means when saidelec- I tro-magnet is not energized and for a rede termin'ed period of time, and means or retaining said governing means against further operationat the termination of such "period, 4

In testimony whereof we have signedour names in the presence of the subscribing Witnesses.

' JOHN P..WILLIAMS.

.fi'u. HERMANN Witnesses:

M. GREENWOOD, E; Sinner B'oorn,

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