US265912A - Ton electric protective association - Google Patents

Description

(No-Model.) 2 Sheets-Sheet 1. G. W. ADAMS.

WATGHMANS ELEOTRIO REGISTER. No. 265,912. Patented 001;.10, 1882.

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GfW. ADAMS.

WATOHMANS ELECTRIC REGISTER.

No. 265,912. Patented Oct. 10, 1882.

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UNITED STATES PATENT OFFICE.

GEORGE W. ADAMS, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE BOS- TON ELECTRIC PROTECTIVE ASSOCIATION, OF SAME PLACE.

WATCHMANS ELECTRIC REGISTER.

SPECIFICATION forming part of Letters Patent No. 265,912, dated October 10, 188.2.

Application filed August 22, 1882. (N model.)

T 0 all whom it may concern Be it known that I, GEORGE IV. ADAMS, of Boston, county of Suflolk, and State of Massachusetts, have invented an Improvement in Electric \Vatchmens Registers, of which the following description, in connection with the accompanying drawings, is a specification.

My invention relates to an electric watchmans register of that class in which the watch- IO man, by operating keys or circuit-controlling devices at various points or stations, causes a signal to be recorded by a recording device in circuit with the said key upon a surface traveling with uniform speed-as a dial rotated by I clockwork-so that a complete record is made upon the dial of the time at which the watch man visited each station andoperated the key there.

The present invention has for one of its objects to detect an attempt on the part of the watchman to evade duty by closing the circuit of any of the recording-instruments at any other point except where its key is located; and it consists in the combination, with each key, of what may be termed a tell-tale wire or circuit, the said tell-tale wires from all the keys passing through a single tell-tale recording-instrument common to all the stations. The circuits are in this instance normally-open branches passing from one pole of the common battery through the actuating-magnet of each disconnected. A battery-wire passes from the other pole of the battery to the anvil-piece of each key, so that by depressing the key the circuit is closed therefrom and the battery thrown upon the corresponding recording-instrnment,

which is thus caused to make its record. If,

however, the said circuit is closed otherwise than by depressing the key-as by throwing a battery-wire on at any other point-the current will divide, a portion passing directly so through the corresponding station recording.

instrument and a portion passing from the key to the tell-tale wire and recorder, so that a simultaneous record will be made by the telltale instrument and by the instrument of the station which the watchman sought to evade visiting without detection. The clock-case containing the recording-dial is provided with a circuit-closer operated by opening the case, and controlling a recorder, so that it the watchman should attempt to make his record by opening the clockcase that fact would also be recorded. The said clock-case recorder is operated when the recording-dial is removed and a new one inserted, so that a record of the time of the said operation is made. The recording-instrument consists of a sharp-pointed finger at the end of an arm connected with the armature of an electro-magnet, which in this invention is arranged to operate as an automatic circuit-breaker, so that the pointed lin- 7o ger is vibrated rapidly, thus insuring a certain and distinct record upon the paper passing beneath it.

Figure 1 is a front elevation of a clock provided with recording apparatus such as employed in practicing my invention; Fig. 2, a side elevation of one of the recording-instruments detached; Fig. 3, a front elevation of the recording-dial on a larger scale, and Fig.

4 a diagram illustrating the circuit and keys. So

The recording apparatus is contained in a clock-case, A, of any suitable construction, it having an arbor, a, arranged to make a revolution once in twelve hours, the same as the hour-hand of the clock. The said arbor is provided with a disk, Z), (see Fig. 3,) upon which a paper dial, 0, may be fastened by a springspider, (I, provided with a slot, 2, to enable it to be removed from or placed upon the arbor a, which is provided with a cross pin, 0, to hold the said spider in place, with the paper clamped between it and the disk I), as shown in Fig. 3. The paper dial 0 is divided by radial divisions representing time, the said divisions coming successively into a vertical position in the rotation of the dial with the arbor a, and they are divided into a series of concentric divisions corresponding to the number of recording-instruments comprised in the apparatus.

Each of the said recording-instruments, as

K I'III- shown in Fig. 2, consists of an electro-magnet, f, the armature g of which is mounted on a spring, h, normally pressing it against a back contact-spring, 2, the said parts g h i being included in the circuit of the magnet f, so that when the said circuit is completed the said armature y will be automatically vibrated, making and breaking the circuit between it and the spring 6, which is made adjustable toward and from the armature g by means of the screw 1'. The said armature g carries an arm, j, fixed thereon by the set-screw k, and provided at its end with a puncturing finger, l, which is brought above the proper concentric division of the dial and in line vertically above the arbor a, so that when the said armature g is vibrated the point or finger I will pierce the paper of the dial in the concentric division corresponding to the particular recording-instrument that is operating and in the radial division that happens to be uppermost, according to the time when the said recording-instrument is operated.

The various recording-instruments R are arranged, as shown in Fig. 1, around the dial 0, and their points I are brought to the proper position by adjusting the armsj longitudinally with relation to the armatures g and bending them laterally when necessary. The paper of the dial 0 is supported at the point pierced by the fingers l by means of a metallic strip, m, embracing the said paper above and below, as shown in Fig. 2, and slotted, as shown in Fig. 3, where the fingers l strike. By making the actuating-armature of the puncturing-finger operate as an automatic circuit-breaker a large number of blows will be struck by the end of the finger in substantially the same place upon the paper in the time occupied by the operator in depressing the circuit-closing key, instead of the single blow that would be produced if the coils alone of the magnetsf were included in the circuit. Such a single blow is not certain to'puncture the paper unless a very great battery-power is employed; but by the rapid succession of blows the paper is sure to be punctured, and an easily-discernible record produced with a comparatively small batterypower. The clock is provided with as many of the station recording-instruments R as there are stations to be visited by the watchman, and also with two additionalinstruments, TO, the former constituting the tell-tale recorder and the latter the clock-case recorder, the former indicating any closure of any of the circuits except at the proper point, and the latter indicatin g if the clock-case has been opened.

The operation of all the recording-instruments is shown in the diagram Fig. 4. The battery 13, by which they are all actuatcd'and which may be kept in the clock-case, has one pole connected by the wire 4 with one terminal of each of the magnets of the recordinginstruments, and the other terminal of each of the station -recorders is connected by wire 5 with the key 0, placed at the station the watchman is to visit. The other terminal of the telltale recording-instrument T, Fig. 4, is connected by wire 6 with a back contact-point for each of the keys 0, which thus normally conmeet the wires 5 of the station recording-instrument with the corresponding wire, 6, of the tell-tale recorder. The other pole of the battery B is connected by wires 7 with anvilpieces for the various keys 0, so that when any one of the said keys is depressed the circuit is closed through the corresponding station-instrument, but the key is at the same time disconnected from the tell-tale wire 6, so that no current is sent through the tell-tale recorder T. It, however, it is attempted to connect the battery-wire 7 with one of the station-wires 5 at any other point except at the key 0, as indicated by the dotted line at F, it will be seen that a divided circuit is afl'orded, a portion of the current passing through the wires 7 and 5 and the corresponding station-instrument, and another portion passing from the wire 5 to the key 0, and thence to the wire 6, and through the tell-tale recorder T, so that a simultaneous record is made both by the station and telltale instruments, thus indicating the improper closure of the circuit and which circuit was so closed.

The clock recorder O is in circuit between the wires 8 and 9, connected with the poles of the battery, and including a circuit-closer, y, operated by the door of the clock after the manner of the usual burglar-alarm circuitclosers, it being retained open when the door is closed, and closing the circuit the moment the door is opened.

The switch S, inside the clock-case, which is shown in Fig. 1 as provided with a glass front, enables the operator to open the circuit of the recorder-instrument C, so as to prevent it from operating while he is changing the dials. After a new dial is inserted in the proper position the switch S is closed,thus causing the clock'recorder U to produce a signal while the door is being closed and another when it is again opened, so that the time of supplying and removing the dial is thus recorded on the face of it. In easethe watchman should attempt to produce his record at the clock instead of from the keys 0, the clock recorder 0 would produce a record of the time that the clock was openedfor that purpose.

I claim- 1. In a watchmans detector, the combination, with the traveling recording-surface, of the recording instrument consisting of an electro-magnet, its armature and back contact-point therefor in circuit with the said magnet, and the arm provided with a puncturing-finger mounted 011 and actuated by the said armature, substantially as described.

2. The combination of a series of station recording-instruments, conductor leading therefrom to a scriesof corresponding stations, circuit-controlling devices at the said stations, and tell-tale recording-instrument and conductors leading therefrom to all the said sta tions, and normally connected through the said 3. The traveling recordingsurface and se-' ries of recording-instruments and inclosingcase therefor, combined with a recording-instrument and circuit-controlling device therefor, operated by the door of the said case, whereby a record is made of the opening of the door, substantially as and for the purpose I5 described.

In testimony wbereofI have signed my name to this specification in the presence of two subscribing witnesses.

GEO. W. ADAMS.

Witnesses J 0s. P. LIVERMORE, FRED A. POWELL.

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