US595375A - Electric signaling apparatus - Google Patents

Description

(No Model.)

W. E. DEOROW.

ELECTRIC SIGNALING APPARATUS.

No., 595,375. Patented Dec. 14,1897.

UNITED STATES PATENT Prion ILLIAM E. DEOROIV, OF BOSTON, MASSACHUSETTS.

ELECTRIC SIGNALING APPARATUS SPECIFICATION forming part of Letters Patent No. 595,875, dated December 14, 1897.

Application filed July 17, 1897.

To all whom it may concern:

Be it known that 1, WILLIAM E. DEoRow, of Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Electric Signaling Apparatus, of which the following description, in conned tion with the accompanying drawings, is a specification, like letters and numerals on the drawings representing like parts.

This invention relates to electric signaling systems, particularly adapted for police sig naling purposes, wherein two classes of signals are transmitted and it is desirable to audibly distinguish one class of signals from the other.

The invention has for its object to improve and simplify the construction of the means employed for distinguishing the signals to the end that for one class of signals a succession of taps will be sounded or a bell caused to ring repeatedly for very short intervals of time and for the other class of signals the bell will be caused to ring for a long time or continuously until reset by hand. In lieu of a bell an ordinary sounder may be employed, if desired.

It is now customary in police signaling systems to divide the signals into two classes, one class containing the on-duty signals and the other class containing the wagon, telephone, and other important signals; but at the present time the onduty signals are received silently i. e. without audible indication-and the important signals are announced by the loud ringing of a bell. If the officer in charge of a station desires to know whether the officers on the beats are properly sending in their on-duty signals, he must watch the strip and note the locations, and as a result considerable time and attention are required; but by so constructing and arranging the parts that the onduty signals are announced by taps or short rings of the bell and the important signals are announced by a continuous ringing of the bell the officer in charge may know without watching the strip What signals are being received and consequently What oflicers are sending in their on-duty signals.

The invention consists in the combination, with a message-recording instrument which is constructed and arranged to receive both Serial No. 644,908. (No model.)

the on-duty and special or important signals, of abell, or it may be a sounder, adapted to respond to the successive impulses of one class of signals and to ring continuously upon the reception of a signal of the other class; also, in the combination, with a message-recording instrument, of a bell, or it may be a sounder, adapted to respond to all signals received by said instrument, means for continuously ringing said bell, and a device controlled by a differentiating impulse for setting said means in operation.

Figure 1 shows a diagrammatical View of a suflicient portion of an electric signaling system to illustrate my present invention; Figs. 2 and 3, modifications to be referred to.

In connection with this invention any wellknown or suitable message-receiving instrument or register may be employed, and such register may be either a single or multiple pen register, although the latter form is preferable, as the signals from several circuits may be received and recorded upon the same strip of paper and but one train employed. In the present instance I have illustrated my invention in connection with a multiple-pen register of ordinary construction, arranged to receive the signals from four separate circuits, and it comprises, essentially, a normally-wound train for moving forward the strip of paper upon which the message is to be recorded, an electromagnet M for releasing said train, four pen-magnets, as 6 and pens e, operated by them, which press the paper against the marking-wheels, which are inked by suitable inking devices provided for the purpose. The pen-magnets c are included in local circuits controlled by relays K, which latter are included in the separate signaling-circuits. one signaling circuit at (0, having signalboxes a. As many signal-boxes are or may be arranged in or included in the several signaling circuits as may be desired, and they each contain multiple-signal transmitters adapted to transmit two different classes of signalsor messagesviz., special or important signals, which require immediate attentionsucl1, for instance, as a wagon-call, a telephone-call, and the likeand on-duty signals, which do not require immediate attention, and said multiple-signal transmitters I have herein illustrated Lil are included or connected in the normallyclosed circuits at.

In conjunction with the register a creeper mechanism is shown which is adapted to operate in conjunction therewith on the reception of the special or important signals only, and hence said creeper mechanism is constructed and arranged to respond to the differentiating impulsethat is, to an impulse which differs from the regular signaling impulses-and for simplicity I prefer to employ impulses of long duration, as the differentiating impulse, such an impulse differing from the regular signaling impulses by reason of its excessive length, as the regular signaling impulses are of very short duration. The creeper mechanism herein shown consists, essentially, of a sector m, provided with a serrated or roughened edge loosely pivoted to a short arm m, fixed to rock-shaft or pivot a, and a toothed or serrated wheel 077?, secured to a shaft 7' which may be one of the shafts of the train of the recorder, and said sector is adapted to be moved into and out of engagem ent with said wheel. When the parts are at rest, the sector at falls by gravity out of engagement with the wheel m but when the magnet M is energized and its armature attracted by reason of the connecting-rod a connecting the armature-lever with the arm m the said sector will be thrown into engagement with the toothed wheel m and as the wheel turns said sector will be raised or turned upwardly on its pivot. The arm on, carrying the sector, will of course be vibrated in response to the impulses received and therefore will hold the sector in engagement with the wheel m a length of time corresponding to the length of the impulses, and for an impulse of short duration will hold the parts in engagement but a short time, and for an im pulse of long duration will hold the parts in engagement a corresponding length of time. A pin n projects from the sector m, upon which rests the outer or free end of a contactpen m located adjacent to but insulated from a contact-pen m and as said sector is lifted the contact-pen 072 will be raised, and upon the occurrence of an impulse of long duration said sector will be raised sufficient to raise the contact-pen m into engagement with the contact-pen m and thereby close a local circuit '6, containing a local battery t and an electromagnet 15 The on-duty or patrol signals are composed of a series of short breaks or changes in the condition of the circuit. Therefore such signals include a succession of short impulses, and the special signals are composed of a long break followed by a series of short breaks. Therefore such signals comprise a long impulse and a succession of short impulses. This impulse of long duration is in the present case the differentiating impulse. On the reception of an onduty signal the armature of one of the relays K vibrates, closing the local circuit containing one of the penmagnets e" and also the releasing-magnet M, thereby releasing the normally-wound train and recording the signal or message upon the strip, and upon the reception of a special signal the same operation of parts takes place; but in addition thereto the armature of the relay K is held retracted upon the occurrence of the impulse of long duration, and the armature of the releasing-magnet M will be correspondingly held attracted long enough for the creeper mechanism to operate and close the local circuit 25 and thereby attract the armature of the electromagnet 25 The armature of the electromagnct t is carried by an armature-lever i pivoted at '6 and having a latched end which engages and holds the drop in elevated position, and pivoted arm P, which when released falls and closes upon a contact t, which is connected with one of the local circuits of the releasing-magnet M.

A bell (1, herein shown as a vibrating bell, is provided as the indicating instrument for the special signals, and said bell is connected at 2 3 with the local circuit containing the releasing-magnet M, and when said local circuit is closed the armature d of said bell will be attracted to tap the bell, and at such time the current passes from the binding-post 2, through wire at, wire 5, bell-magnet and wire 6, to binding-post As the on-duty signals are received the bell d will respond by taps to the successive impulses of the signal.

7 represents the local battery included in wire 8, which leads to the arm 5 and to a binding-post 9 on the bell, and wire 10 leads from said binding-post 9 to a back contact 12, which is engaged by the vibrating contactplate 13 on the bell-armature, and when the arm 5 is released and closes on the contact i a local circuit containing the local battery 7 will be closed, and the bell will respond as an ordinary vibrating bell and will ring continuously until the drop t has been raised and the local circuit opened. Upon the occurrence of the impulse of long duration which precedes a special signal the bell will thus be caused to ring continuously.

It will be seen that the bell cl is herein constructed and arranged to serve as a tap-bell for the impulses of short duration and to ring continuously when the drop '6 falls; but in lieu of providing a bell of such construction an ordinary vibrating bell, such as shown in the modification Fig. 2, may be employed, it being set in operation for impulses of short duration and caused to ring continuously on the reception of the differentiating impulses.

By means of the indicating device herein shown it will be seen that not only is the special call audiblyindicated, but also the on-duty calls are audibly indicated to such an extent that a person familiar with the service may by listening to a call readily tell what officer has transmitted it.

It is obvious that the bell maybe connected in circuit with the message-recording instrument in different ways and still respond in accordance with this invention. Therefore I do not desire to limit my invention to the particular way herein shown for connecting said bell in circuit with the message-recording instrument.

In lieu of providing the local circuit 25 and magnet 25 and drop i controlled by it, for closing the short circuit for the bell and retaining it closed until said drop 15 is reset by hand, the contact-pens m m may directly operate said short circuit, as shown in modification Fig. 3, wherein it will be seen that the pen m is formed with a latched end, and pen when lifted will be engaged and held by said latched end until said parts are disengaged, and said pen m is connected by wire with the post 3 of the bell, and the pen m is connected by wire 8 with the .post 9 of the bell.

1. In an electric signaling apparatus, a signal-box having means for transmitting two classes of signals, one of which is accompanied by a differentiating impulse, a messagerecording instrument for receiving the sig nals of both classes, and a bell constructed and arranged to respond successively to the impulses of one class of signals, and to respond continuously upon the reception of a signal of the other class, substantially as described.

2. In an electric signaling apparatus, a signal-boX having means for transmitting two classes of signals, one of which is accompanied by a differentiating impulse, a messagerecording instrument and a bell for receiving the signals of both classes, means for continuously ringing said bell, and a device controlled by said diiferentiating impulse for setting said means in operation, substantially as described.

3. In an electric signaling apparatus, a signal-box having means for transmitting two classes of signals, one of which is accompanied bya differentiating impulse, a messagerecording instrument for receiving the signals of both classes a bell also responsive to the signals of both classes, a short circuit for said bell, a circuit-closer for said short circuit, and means for operating said circuitcloser controlled by said differentiating impulse, substantially as described.

4. In an electric signaling apparatus, a signal-box having means for transmitting two classes of signals, one of which is accompa nied by a differentiating impulse, a message recording instrument for receiving the signals of both classes, a bell connected in circuit therewith and responsive to all signals received by it, a short circuit for said bell, a circuit-closer for said short circuit adapted to be manually reset, and means for operating said circuit-closer controlled by said differentiating impulse, substantially as described.

5. In an electric signaling apparatus, a signal-box having means for transmitting two classes of signals, one of which is accompa nied by a differentiating impulse, a messagerecording instrument for receiving the signals of both classes, a bell, the operatingmagnet of which is connected in circuit with said recording instrument to respond concurrently therewith, a short circuit for said bell, a vibrating circuit-closer therefor actuated by said operating-magnet, and another circuitcloser for said short circuit, and a device operated by said differentiating impulse for operating said last-named circuit-closer, substantially as described.

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

\VILLIAM E. DEC/ROW.

\Vitnesses:

B. J. NoYns, ARTHUR F. RANDALL.

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