US982052A - Electrical system for the supervision of watchmen. - Google Patents

Description

A. GOLDSTEIN. BLEOTEIOAL SYSTEM BOB THE SUPERVISION 0F WATGHMEN.

APPLICATION FILED JULY 22,1910

Patented Jan 17,1911.

2 SHEETS-SHEET 1.

, A. GOLDSTEIN. ELECTRICAL SYSTEM FOR THE SUPERVISION OF WATGHMEN.

APPLIUATI OH FILED JULY 22,1910.

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GOLDSIEIN, OF NEV? YORK, N. Y., ASSIGNOR TO INTERNATIONAL ELECTRIC PROTECTION COMPANY, A CORPORATION OF NEW YORK.

ELECTRICAL SYSTEM FOR THE SUPERVISION OF WATCHIVIEN.

Specification of Letters Patent.

Patented J it, ifilifi.

Eriginal application filed May 10, 1910,.Seria1 No. 560,534. Divided and this application filed July 22, 910.

- Serial No. 573,170.

To all whom it may concern:

Be it known that I, ALBERT GOLDSTEIN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a certain new and useful IIDPIOVGIUOIK in Electrical Systems for the Supervision of' 'Watchmen, of whi h the following is a specification.

The invention is an electrical system for the supervision of watchmen. It is a central station system in contradistinction toa local system; or, in other words, the watchman is under the constant supervision at all times of a person posted at a central station. It operates automatically at certain times to send in tell-tale signals unless the watchman goes'to the several sub-stations on the premises to be protected and prevents this operation. This is the opposite method to that hitherto employed, wherein the watchmanis himself required to send in the signals, or make arecord to be examined at some future. time. It also provides means for telephonically communicating with the watchman as soon 5 a tell-tale signal comes -in, Hence the'determination-of whether a watchman has done hi's ditty through the night, for exanmle is not a matter for the next morning, but one of immediate-discovery. He cannot miss a sub-station on his rounds without that fact being instantly known, and inquired into. To the device which watches the watchman there is added a device which watches it, so'that any failure of the former immediately results in a warning signal being sent to the central station; and again the watchman can be called upon to discover and remove the cause of the trouble. In association with the watch system there is also provided a fire alarm system, whereby, upon the occurrence of a fire, the watchman can instantly send in a signal, and this lire signal is diiierentiated from the watch or su 'iervision signals, so that its nature is atonce recognized. And finally, provision is made for the operation of the fire alarm system despite troubles on the wires on. the protected premises, and for preventing the transmission of false alarms, due to accidental wire crossings or like occurrences.

In another application for Letters Patent. t t-rial- No, 560,534. filed May 10, 1910. of which my present application is a division, 1 have. described and claimed the watch mans supervisory system herein set forth, so that my present application relates more particularly to the said supervisory system in combination with a telephone or fire alarm system. i

The accompanying drawing is an electrical diagram, showing the entire system. The two sheets are to be placed together, Figure 2 on the right of Fig. 1. v

For convenience of description, I will as sume that there are two sub-stations (there may be any number) in a given building, from which signals will be automatically and alternately sent to the central station at intervals of thirty minutes apart. At each substation there a device which is manually controlled by the watchman for preventing the transmission of said signals. Obviously, the watchman must arrive at each sub-station before the moment when the signal will be automatically sent, and must, to prevent such transmission, operate the controlling device. If he does not do this, then the simple fact that a signal is received at the central station shows that the watchman has neglected to arrive at the sub-station at the proper time. The watch man may then be called up on the telephone, provided for the purpose, and hisexcuse for the dereliction demanded. If no reply is received to the telephone call, then the usual practice of sending a runner to the protected premisesto discover the cause of the trouble can be resorted to.

I will first describe the mechanism whereby the signal is automatically sent, and also the means whereby the watchman prevents that transmission.

The aut01m1tz'o zfranwm'ssion of sigynols.l and II are the two sub-stations which the watchman must visit successively at intervals, say, of BO minuteS. l is a cam disk which is kept in rotation by any suitable clock mechanism, and which, at intervals of thirty minutes, closes contact with switches 2 and 3, connected respectively to sub-stations I and II. lVhen contact is made with switch 2. local circuit is closed by way of wire 4, to switch 5, and contact (3, to wire 57, and then by autoniat means a. signal is sentto line and so to the receiving station; and similarly when contact is made with switch 3, another local circuit is closed by way of wire 8, to switch 9. and contact 10, to wire 57, and then, as before, the automatic means operates to send the signal to line and so to the central station.

' The watchmans signal preventing (Zem'ces.-'-In order to prevent a signal from being sent, the watchman must reach the proper substation before the moment arrives for its automatic transmission, and must operate the preventive means there located. Any suitable clockwork mechanism contained in a case 12 sets in rotation a cam 1st when released by the insertion by the watchman of a key, for example, in an opening 13. While the cam 1-"1 is at rest, the end of a switch 15 enters a notch in its periphery, and as switch 15 is mechanically connected to switch 5, the local circuit, already described, is normally kept closed. But as soon as the cam 14 begins. to rotate, the switch 15 is raised and the local circuit is broken between switch 5 and contact (3. The wire 57 is not broken because switch 15 now t'ouches contact 7. The period of rotation of cam .14 is to be made long. en'ough to keep the local circuit open during the period while the cam 1 is in contactwith switch 2. Hence the signal is not transmitted. The watchman then goes to substation II in proper season, and perform the same operation. Consequently, so long as he visits these sub-stations and operates his preventive devices, no tell-tale signal arrives at the central station, but should he fail to arrive and act at the proper time at either sub-station, then. as stated in the beginning, the signal will automatically be sentin. If the watchman is not to be kept under supervision continually night and day, but only, say, during the night and throughout the 36 hours intervening between Saturday night and Monday morning, I provide a disk 16 which, by suitable clock-work mechanism, is caused to make one rotation in a week. This disk is in circuit with disk 1, and has on its periphery suitably disposed projections of proper length which keep the circuit closed at switch 17 over the night hours, and over'the Saturday to Monday interval, the bent end of the switch 17 at other times entering the spaces between said pr0-' jections and so breaking the circuit.

The telephonic ingm'ry.It has been stated that in case a signal is received indicating failure on the part of the watchman, he may be called on the telephone and asked to exlain. The telephone connections are as follows: At III is a set 'of standard telephone receiving deyices connecting with the regular telephone line III One terminal of the telephone line connects by wire 18 to contact 19. The other terminal-connects by wire 2.0 to two local telephone transmitting stations III and III, and finally, to switch 21 which is mechanically connectedito switch 17. The stations III and III are preferably situated at the watehmans stations I and II, and each is provided with the usual bell, condenser, induction coil and jack, so

that the watchman can connect to either of 1 them a portable telephone transmitter and receiver, which he carries always with him. It will be obvious that when the circuit is closed by disk 16, the telephone circuit is also closed, and in this way, the telephonic devices are made ready for use during the period while the watchman is under supervision. I-Ience during the supervised time. all of the bells atthe telephone stations III, III, III will respond to a call from the central station, and this call the watchman can answer at the station III or III which happens to be nearest him at the moment, by connecting in his portable telephone.

The super-vising transm-tter.l have now described the device which watches the watchman. I will now describe the supervising transmitter, or, in other words, the

device which watches the watching device.-

This is shown at- IV, and its purpose is to send in a signal automatically in case of a failure of the driving mechanism which r0- tates disk 1, in which event, of course, the

hence itmight be inferred at the central station that the watchman was alert and doing his duty, when in fact the reverse might be true.

22 is a code wheel, fast on shaft 23, which apparatus would no longer be operative, and

is rotated by clock-w'ork'meohanism in tho case 24. Said clock-workmechanism is normally wound, but is prevented from operating by the following means: 25 is the pallet tail which, when the clock-work is running, vibrates to and fro. This tail is held from movement and the clock-work so arrested by its entrance into a sleeve 26 carried on the end of a rod which extends upwardly from the dash pot bell 27. The bell 27 has a small side vent 28,-,and is received in the cup 29. A pin on the rod enters a slotin the lever 30, which is pivoted to any suitable support at 31. The free end of lever 30 extends in front of a disk 32 which is intermittently'rotated by the same mechanism which drives the disk 1, so that (under the time conditions previously assumed) a half revolution is made every half hour. On the i disk 32 are two pins 33, 34, disposed 180 apart. When one of the pins 33, 34 comes under the lever 30, it lifts said lever, and soraises thebell 27 out of its cup 29. As

the pin-passes from under the lever, the bell descends, imprisoning the air which can now escape only slowly through the vent 28. By suitably adjusting the. size of the ven the time period of the descent of the-bell can be regulated. If now, the driving mechanism of disk 1 should fail, disk 32 will not be rotated, and hence the bell 27 will be allowed to sink to the bottom of its cup, thus withdrawing the sleeve 26 from the pallet tail 25, and freeing the clockwork mechanism of code wheel 22. Said wheel controls the connected switches 35, 36 to make and break contact at 37 and 38. On the shaft of wheel 22 is a disk 39 having a rim of insulating material and a notch 40 in said rim into which enters the bent end of a switch 41, which is connected to ground at G. Switch 41, when its bent end enters notch 40. breaks contact with switch 42, and is raised to close said contact to ground when said disk rotates. i

The main transmitten-This is shown at T; It comprises a code wheel M rotated by any suitable clock-work mechanism in the case 43. Said wheel operates the switches m, m to break circuit at the contacts 44, 45. On the shaft of wheel M is a disk Nhaving a rim of insulating material and a notch 0 in said rim into which enters the bent end of a switch a, which is connected to ground at G Switch a, when its bent end enters notch'o, breaks contact with switch a, and is raised to close said contactto ground when said disk rotates. The pallet tail 1) of the driving mechanism of wheel M is normally held, and said mechanism is so prevented from operating by engagement in a notch in the end of a pivoted lever 46, which is controlled by the magnet. 47, which magnet, when energized, lifts said lever to free said pallet tail.

The metallic watch cirouit;-All of the apparatus on the right of line m, 33, Fig. 2, is located at the receiving or central station, and all on the left is located at the trans mitting or protected station. The source of current A is here shown in two sections, with a connection to ground Gbetween them.

The magnet F is a neutral magnet'having two coils 49, 50, and controls the switches f and f. The magnet K controlsthe switches k and 7c. The magnets D, D, E, E control the translating mechanism at the central or home station. Magnets '13 and l are to he made relatively weaker than magnets D and E. pulses, one set stronger than the other set, be successively transmitted, all of the magnets l), E, l), E will be-capable ofircsponding to the stronger set of impulses; but only D, E will respond to the weaker set. Magnet D controls switch (Z to open and close con- .tact at 68, and magnets D, E, E control switches cl, 6, e to open and close contact at 69, 70, 71. The contacts 69 and 71 are in local circuit with battery L and lamps P, Q; The contacts 68, are in local circuit with battery L and lamps P, Q. The said lamps constitute translating devices for the signals transmitted through magnets l), l), E, E. The metallic circuit proceeds as follows: "from source A, to magnet D, magnet 1'), line member a, contact 44,.switch m, conthence to switch Z Hence if two sets of im tact 45,- switch in, wire t8, to junction where the circu t s into a line lirai and a local hr ch branches are r united at junction Y. Tracing, first, the line. branch, the circuit is as follows: from junction X, to coil 49 of neutral magnet is, by wire 51, to junction Y. The house branch proceeds from junction X, to coil 50 of neutral magnet F, to switch 7', contact 52, wire 53, (which forms an outer loop extending through the protected premises) contact 5%, switch f, wire 55, switch k, contact 56, magnet K, wire 57 which forms an inner loop and includes in series the watchmans sulr stations II and L es follows: in sub-station H, to switch 58, contact 5:), to switch 3,-wire 8, switch 9, contact.- 10, to sub-station I. In sub-station I, to switch. 15, contact til, wire (32, switch 2., wire 4, switch 5, contact 6, and contact 63, wire (54, to unction Y. The line and house branches having united at junction Y, the circuit continues tocon'tact 1'35, switch 66, wire 67, con tact 38, switch 35, contact 3?, switch 36, line member a, magnet E, magnet E, to SOUTcA.

The operation of the apparatus so far as described is as follows: The magnets D, D, E, E and K are all normally energized from the central source A. F are not energized, F being balanced. I will now assume that the watchman being due at sub-station l, for example, at a given time, fails to go there, and hence does nothing to prevent warning of that fact being automatically transmitted to the receiving station. This transmission takes place in the following way: Disk 1 makes, contact with switch 2. bircuit is then established through magnet 47, the coil terminals of which are respectively connected to junction X and to switch 17. Magnet 47 raises lever 46, freeing the clock-work mechanism of code wheel M. The transmitter T is bridged between contact and switch m by a con nection containing resistances 72, 73, which com'iection connected through contact a and switch 72- to ground at The code wheel M in rotating intermittently, brings these resistances into the circuit and so sends to line a succession of weak impulses, which will operate only the magnets D, E, and produce visual signals atthe lamps P, Q". These are the tell-tale signals which show the dereliction of the watchman, and upon receiving them, the attendant at the receiv ing station at once calls up the watchman by telephone in the manner already described.

The arrangement of resistances 74, T5 and ground connection at the supervising transmitter at IV is the same as just explained, so that when this transn'iitter is caused to operate. as l1li 2(l Y described, it also sends in similar weak signals, allfccting only magnets 1), E. In this event, the attendant The magnets 4:7 and nism of disk 1, which may have run down,

or otherwise remedy the trouble.

The fire alarm connectiona The object of the part of the system now to be described is to enable the watchman to send in fire alarm signals in case of necessity. This he does by means of hand switches, any number of which may be used throughout the building to be protected. Two of said switches are here shown at B and B. The pivoted hand lever B is normally in wiping contact with the plate terminals 6, b of wire 53, and when operated, meets the plate contact 0 connected to wire 57 before it opens circuit at said terminals. makes contact at C, thus producing-a crossing bet-ween wires 53 and 57, the magnet K, which is normally energized, becomes shortcircuited, fails, and its switches is, k break circuit at. 56 and 63, and close circuit'at 76, 77 and 78. It has already been explained that magnet K is in sericswith coil 50 of neutral magnet F which is normally balanced. The removal of the resistance of magnet K now unbalances magnet F, causing switches f and f to open contact at 52 and 54, and so bringing magnets H and H into the following circuits: Magnet H. From junction X, to

coil 50 of magnet F, wire 7 9, magnet H, wire 80, wires 53, switch B, wire 57, switch is con-' tact 78, to ground G Magnet H. From junction Y, to wire 64, contact 76, switch 7e wire 55 wire 81, magnet H, wire 53, switch B, wire 57, switch 76, contact 7 8, to ground G The magnets H and H, thus being energized, attract pivoted levers h, it against the action of their retracting springs s, 8. On each of these levers are two pawls 2', a", which engage shouldered disks j, j on the shaft 1. The/disk shoulders are so placed as that, when the magnets operate, only the lower pawls 2' act on the disks j, y" to' turn them.- This brings the upper pawls i into position to engage the shoulders on the upper edge of the disks. By this time, the,

hand lever B has moved out of contact with. the terminals I), 5, thus breaking the circuit and denergizing magnets H, H, which release their levers h, h, so'that said levers are brought back to their original position by the retracting springs s, 8. But because the upper pawls i are now in engagement with the disks, this movement of the levers rotates the disks still farther in the same direction. The object of this construction is simply to cause an arm at on the end of the I shaft 1 to move over" its path in two steps.

Against this arm bears the pallet tail w of the clock-work mechanism of a code wheel WV which, in this way, is normally prevented from operating. When the arm it makes its fir stop to the position indicated by dotted lines 2?, it does not release said pallet tail, but

When the lever B I on making its second step to the position shown in dotted lines at t, it does effect such release. Going back, therefore, to the hand switch B, the initial movement of that switch into contact with a, but without breaking contact at terminals 7), b, deter mines, through the devices described, the first step of. arm u. The movement of B continued, breaks contact at terminals 5, Z) and this determines the, second step of arm a and consequent release of wheel W. Metallically connected to wheel W is a disk C having a notch in its periphery into which enters the bent end of switch 83, connected to ground at G When the disk C is at rest, this ground connection is broken. lVhen disk C rotates, the switch 83 bears on its circumferential edge and establishes such ground connection. Switch 66 bears on wheel V. i

From the foregoing it will be seen that the operation of lever B by the watchman causes the release of wheel lV, which now becoming connected to ground, sends its signal impulses to line. These impulses are much stronger than those sent by the transmitters at T and IV, and hence all four of'thc magnets D, D, E, E and all four of the lamps P, Q, 1 Q respond. The code on wheel W is preferably different from that on wheels M and 22.

The reason for providing two magnets H, H is to insure 'the transmission of the fire signal in case of trouble on either loop wire 57 or 53, for its will be evident that if one of said wires is impaired, only the mag- It is, of course, to be understood that sufficient lag is to be given to magnet K to prevent it becoming deenergized by the ordinary code signals sent over the system. Obviously, also, any trouble on loo 's 53 and 57 will unbalance magnet F, w ich will thereupon put magnets H, H in circuit ready to actuate the release mechanism of the fire alarm wheel W upon the operation of any lever B, B.

Instead ofleversB, B, any other signal initiating devices may be used, such as thermostats, organized to perform the same two steps. I

; I claim:

1. An electrical supervision syst-enrcomprising (1) a line circuit. 'a transmitter ceases automatically operating at certain time intervals and for certain time periods to send signals over said line, a translating device at the supervising station, and a telephone circuit; and, (2) at the supervised station,

' signals over said line, a translating device at the supervising station, and a telephone circuit, and, (2) at each of a plurality (it supervised stations, telephonic apparatus, and' successively operable manually controlled means for preventing said signal transmission during said periods; and (3} an automatically operating device for intermittently connecting said telephone circuit and apparatus to line,

3. An electrical supervision systeni' comprising a line circuit and in said circuit an automatically operating transmitter, a translating device, a second transmitter, and a manually operable circuit closer disposed in a crossing between the line members and at the supervised station for independently controlling said secondtransmitter.

4:. An electrical supervision system comprising a line circuit a'pd in'said circuit anautcmatically operating transmitter, a translating device, a second transmitter, and a plurality of manually operable circuit closers, each independently controlling said sec ond transmitter and disposed in crossings between the-line members at the supervised station.

5. An electrical supervision system comprising a bus circuit and 1n sa1d circuit an automatically operating transmitter, two

translating devices, a second transmitter, and means at the supervised station for lndependently controlling sa1d second transm1tter: the said transmitters respectively sending impulses of diiferent strengths: one of said translating devices being responsive to relatively'weak impulses sent by the first named transmitter, and both of said devices being responsive to the stronger impulses sent icy the second transmitter.

6. An electrical supervision system com prising a line circuitand in said circuit an automatically, operating transmitter, a second transmitter, means at the supervised station for independently controlling said second transmitter, and selective devices at the supervising station for indicating signals respectively sent by said transmitters.

7. in electrical supervision system comprising a source ofcurrent at the supervising station, a line circuit, an automatically operating transmitter, a second transmitter, translating devices selectively controlled by said transmitters means for preventing the operation of said second transmitter and a manually controlled releasing device for said preventive means.

In testimony whereof I have aliixed my signature in presence of two Witnesses.

' ALBERT GOLDSTEIN.

Witnesses:

Gnn'rnnon T. PORTER, Mar T. MOGARRY.

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