US2852766A

US2852766A - Building security indicating and recording device

Info

Publication number: US2852766A
Application number: US445086A
Authority: US
Inventors: Rollo B Green
Original assignee: ELECTRO CHEK CORP OF AMERICA
Current assignee: ELECTRO CHEK Corp OF AMERICA
Priority date: 1954-07-22
Filing date: 1954-07-22
Publication date: 1958-09-16
Anticipated expiration: 1975-09-16

Description

Sept. 16, 1958 R. B. GREEN 2,852,766

BUILDING SECURITY INDICATING AND RECORDING DEVICE Filed July 22, 1954 3 Sheets-Sheet 1 6. .3 I 4/ *1 J7 n 46 J5 I 5 I I [ZECfH/C INVENTOR Mam B. G/P'f/l BYMM ATTORNEYS R. B. GREEN Sept. 16, 1958 3 Sheets-Sheet 2 Filed July 22, 1954 6 W UH om 3mm a 9 on 3a? m. on 3: Q on @NPQ 3 9w; n. on 3N Q on QM w. 3 3i INVENTOR BY 80140.6. 6847f,

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, ATTORNEYS R. B. GREEN Sept. 16, 1958 BUILDING SECURITY INDICATING AND RECORDING DEVICE Filed. July 22, 1954 3 Sheets-Sheet 3 5/1/6 I Hal/f III.

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ATTORNEYS BUILDING SEKIURETY INDIQATHNG AND RECURDWG DEVICE 3 Claims. (Cl. filth-276) The present invention is related to devices for safeguarding buildings against unauthorized entering and is more particularly directed to devices for indicating that buildings closures, such as doors and windows, are shut and for recording the examination of such indicators by patrolmen from time to time.

Accordingly, it is a principal object of the present invention to provide a device for indicating to night watchmen, police and the like that all closures of the building are closed and locked and which device also records this examination without the necessity of the police physically contacting the apparatus.

Another and important object of the invention is to provide a security indicator and recorder which can be economically produced, having a minimum of parts and which can be remotely operated by the proper persons and which device also indicates when the elements thereof are not properly functioning.

Further objects of the invention will be in part pointed out and in part obvious from the following detailed description of the accompanying drawings, wherein,

Fig. 1 is a schematic view of the present device.

Fig. 2 is a side elevation, partly in section, of the tape recorder.

Fig. 3 is an enlarged plan view of a portion of the tape.

Fig. 4 is a wiring diagram showing the photoelectric relay circuit.

Fig. 4A is a modification to an indicating lamp circuit forming part of the wiring diagram of Fig. 4.

Fig. 5 is an enlarged detailed view partly in section of the lock operated switch forming part of the present device; and

Fig. 6 is a schematic top view of a modified form of door operated switch.

Referring now more particularly to the accompanying drawings in which like and corresponding parts are designatcd by similar reference characters, note particularly Fig. 5 wherein is shown a conventional door 1 upon which is mounted a knob 2 of the door lock from which extends a bolt 3 for retaining the door shut against the door jamb 4. A switch housing 5 has an opening 6 for receiving said bolt therein whereupon said bolt pushes head 7 of rod 9 longitudinally of the bore of support 8 compressing spring It). Base 11 of said rod accordingly contacts poles 3 .3 for closing the circuit formed by wires 14 and which are connected to a source of supply of electrical current. Head '7, support 8 and base 12 for poles 13 are preferably formed of an electrical insulating material to prevent the electrical current from reaching door knob 2.

Wires 1d and 15 are connected to a transformer 16 controlling a photoelectric relay circuit as best shown in Fig. 4 of the drawings. Two wires 17 and 18 are connected to said transformer with wire 18 connected to a condenser 20 and a resistor 19. The opposite side of said condenser and resistor are connected to a wire 21 which in turn is connected at one end to a conventional ice photoelectric tube 22 which tube likewise is connected to a wire 23 which in turn is connected to a wire 24 connected to a plate 25 of an electronic discharge tube. Wire 21 is connected to the grid 26 of said electronic discharge tube, while the filament 27 thereof in turn is connected by wire 28 of said transformer.

Wire 1'! extends from said transformer around to a wheZE connected at one end to an indicating lamp 354 from which lead 31 extends to wire 23.

Wires

29 and 31 in addition are connected to the windings of a solenoid 32 having a plunger 33 from which extends a pin 34. solenoid has a tubular core 35 through which said plunger slides when said winding 32 is energised, compressing spring 36 which returns the plunger upwardly when the current is shut off.

Adjacent said solenoid is mounted a base 37 from which extend a pair of arms 38 supporting therebetween a shaft 3d upon which is wound a roll of tape dd. Said tape is fed as at 41 between a pair of guide plates and 43 with plate 43 having an opening 4 2 beneath pin 54. Tape 41 is drawn through said guide plates by a pair of rollers 45 supported by a pair or" arms and 4? connected by a cross bar 48 which likewise supports solenoid 32. A gear 49 is fixedly connected to one of said rollers 45 for rotation therewith and is in meshed connection with a gear chain 50 driven by a conventional electric clock mechanism 51 connected to a source of electrical current as at 52.

A closed housing 53 contains the photoelectric cell relay circuit as hereinbefore described and has a bracket 54 on one side for supporting a filter 55 extending through said housing and in line with photoelectric tube 22. Further an indicating lamp 56 extends through said housing 53 and is connected by

wires

57 and 58 to the two poles 13 of switch 9 for line lid.

Fig. 4A shows a modified circuit for said lamp 56 which as indicated thereon may be connected by wire 58a to wire 15 instead of a pole of switch 9 for a purpose to be explained hereinafter.

In Fig. 6 of the drawings there is shown a modified arrangement of the switch for closing line 1d and which switch consists of a button 59 of insulated material having a rod 60 sliding through a support 61 with a spring 62 between said button and said support while a conducting plate 63 is connected to the opposite end of said rod for contacting the two

posts

64 and 65 of wire in the operation of the present device, upon the clos ing and locking of all doors 1 to which the apparatus is connected, the electrical switch in the adjacent jarnbs 4 will be closed by the conducting plates contacting poles l3, completing the electrical circuit through

wires

14 and 15. While only one switch is shown in line 1 14, it is to be appreciated that this line could be connected to any number of such switches, each operable by door at various positions in one or more buildings.

Upon closing of the circuit, current passes through the transformer 16 into the photoelectric cell relay circuit; that is, through wires 18 and ii and 23 to said electronic discharge tube. Upon the directing of a light above a predetermined candle power through filter lens 555, said light will strike the photoelectric tube 22 whereupon the current generated by said photoelectric tube will be directed to the plate of said electronic discharge tube activating said tube which then passes current to wire 23 and the windings 32 of the solenoid and also to the indicator lamp 350. It is preferable that the photoelectric cell be activated only upon receiving a light re duced from around 200,000 candle power by said filter lens, for example, so as not to be activated by lesser powered lights such as lights in the building, small flash lights and the like.

Upon the windings 32 of said solenoid receiving electrical current, plunger 33 will move downwardly causing pin 34 to perforate tape 41 therebeneath. The clock mechanism 51 through its

gearing

50 and 49 rotates rollers 45 at a predetermined speed so that, for example, the tape 41 will have the indicia thereof beneath pin 34 corresponding to the correct time of the day whereupon the mark created by said pin will form a permanent record of the actual time at which the light struck the photoelectric tube 22.

Watchmen, guards, police and the like can accordingly observe the housing 53 either while walking through the interior of the building or by looking through the window from the exterior thereof and upon noting that the indicator lamp 56 is not lighted will know that all closures in the building are closed and locked. Alternately if the circuit of Fig. 4A is used for lamp 56, said lamp will be lit when all the building closures are shut and switch 9 is closed. This observance can be made, for example, from a vehicle without necessitating the patrolmans leaving the same and they can direct a light of the proper candle power to the filter 55 activating tube 22. Lamp 39 will light if the apparatus is working correctly, indicating that the pin 34 has perforated tape 41 leaving a record of the inspection. Conversely, if the lamp 56 is lit, then the patrolman would be warned of an open door or window and should investigate. Also, if the apparatus is not working correctly, such as for example tube 26 having burned out, the current will pass directly to the transformer and to the lamp 30 causing the same to burn continuously and serve as a Warning that the apparatus needs attention.

It is to be appreciated that the switch 9 may take many different forms and also other forms of the photoelectric relay circuits may be used as well as other forms of electrically operated recording apparatus. Accordingly, the invention is capable of considerable modification and such changes thereto as come within the scope of the appended claims are deemed to be a part of the invention.

WhatI claim is:

l. A building security indicating and recording device comprising in combination an electric switch operable by a building closure, a source of electrical current, a pair of wires connected to said source of current with one wire having said switch interconnected therein, a photo- 45 electric tube relay circuit connected to said pair of wires for receiving current only when said closure operated switch is closed and having the photoelectric tube thereof positioned for receiving light from the exterior of said building, an indicating light also connected to said pair of wires for receiving current therefrom when said switch is closed for indicating the closing of said switch and which indicating light is positioned for being vsible exteriorly of said building, and electrically operable recording means connected to said relay circuit for receiving current therefrom when a light of a predetermined power strikes the photoelectric tube of said relay.

2. A building security indicating and recording device as claimed in claim 1 wherein a second indicating light is connected to said relay circuit for receiving current therefrom with said recording means indicating the operation thereof and which light is positioned for being viewed from the exterior of said building.

3. A building security indicating and recording device comprisin in combination a source of electrical current, a circuit connected to said source of current, a plurality of switches interposed in series in said circuit and each mounted for being closed by the closing of a building closure, a closed housing, a photoelectric relay circuit contained within said housing and connected to said firstmentioned circuit for receiving current therefrom only when all of said closure operated switches are closed, an indicator lamp extending exteriorly of said housing and connected to said relay circuit for receiving current therefrom, a filter mounted in one side of said housing in line with the photoelectric tube of said relay circuit for admitting light of a given power through said housing to said tube, said housing being positioned with said indicator lamp and filter being visible and capable of receiving light from the exterior of said building, electrically operable recording means connected to said relay circuit for receiving current when said tube receives light of a given powerconsisting of a solenoid whose windings are connected to said relay circuit, a tape with recording indicia thereon, means for presenting said tape to the plunger of said solenoid to be marked thereby, rollers for drawing said tape past said solenoid, and electrically operated clock mechanism connected to said source of current and to said rollers for rotating same at a given speed.

References Cited in the file of this patent UNITED STATES PATENTS 575,799 Bower Jan. 26, 1897 1,256,362 Olson Feb. 12, 1918 1,349,651 Bartlett Aug. 17, 1920 1,536,933 Rose May 5, 1925