US316693A - Beegh - Google Patents

Description

(No Model.)' 7

H. VAN I-IOEVENBERGH.

CHEMICAL OR- FAG SIMILE PRINTING TELEGRAPH. No. 316,693.. Patented Apr. 28, 1885.

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v UNITED STATES PATENT OFFICE.

HENRY VAN HOEVENBERGH, OF ELIZABETH, NEWV JERSEY, ASSIGNOR TO THE BALTIMORE 85 OHIO TELEGRAPH COMPANY, OF BALTIMORE, MD.

CHEMICAL OR FAC-SIMILE PRINTING-TELEGRAPH.

EPECIPICATION forming part of Letters Patent No. 316,693,dated April 28, 1885.

Application filed August 7, 1884.

T0 ctZZ whom, it may concern:

Be it known that I, HENRY VAN HOEVEN- BERGH, a citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Automatic Telegraphs, of which the following is a specification.

My invention relates, generally, to the class of telegraphic apparatus employed for auto matically transmitting messages over a single electric conductor; and it relates especially to that class in which a transmitting-slip is prepared with the characters embodying the message formed by groups of perforations, the record of which is made at the receiving-station upon chemically-prepared paper.

The object of the invention is to provide means for causing one terminal of the main line to be electrically connected with a series of transmitting-points in succession, and to cause the remaining terminal to be simultaneously connected with a series of receiving-styluses in succession; and,also,to provide means for moving the transmitting and receiving slips with the proper relative speeds. The invention consists in employing in connection with two regulated motors, preferably of the general character known as the Lacour motor, a series of transmitting-points, and a corresponding series of receiving-styluses, which are respectively located at the transmitting and receiving stations. The transmitting-motor is provided with a circuitclosing arm,which is connected with the main line and passes over a series of circuit-closing plates in succession. One of these plates is connected with an auxiliary battery having the same polarity as the main battery, which is included in the main line for the purpose of effecting impressions upon the chemicallyprepared paper. The remaining contactplates are respectively connected with the series of transmitting-points. The prepared transmitting-slip is moved beneath the circuitclosing points and over a conducting-surface, which is connected with .the earth at a regulated speed by means of a motor. At the receiving-station there is provided a circuit-closing arm and a series of contact-plates corresponding to the similar parts at the transmitting-station.

(No model.)

One of these contact-plates is connected with the earth, while the remaining plates are respectively connected with the series of receiving-styluses. The circuit-clos- 5 5 ing arm which is applied to this series of contact-plates is also connected with the main line, and it is actuated by the motor at the receiving-station. An arm moving with the shaft of this motor is applied to an electromagnet which is included in the circuit of the main line, and the periodic vitalizations of this magnet serve to maintain the motor in unison with the transmitting-motor.

Suitable means are provided for advancing the chemically-prepared paper at the proper speed relatively to the transmitting-slip over a conductingsurface which is connected with the earth. So long as the motors move in unison, the circuit of the battery included in the main line will be completed through the successive transmitting-points simultaneously withthe completions through the corresponding receiving-styluses. At one point in the revolution of the transmitting circuit-closing 7 5 arm, however, the additional battery will be connected with the main-line, and at the same moment the ground-connection of the main line will be established at the receiving-station. If, therefore, 'the armature at that moment confronts its electro-magnet, the motors being in unison, no effect will be produced.

If, however, the receiving-motor be slightly in advance, the electro-magnet, by acting upon the armature,will tend to retard the receiving-motor, and if the receiving-motor be slow the electro-magnet will tend in like manner to accelerate the movement of the receiving-m0- tor. In this manner the two motors will be maintained in unison. The transmitting-slip 0 is prepared with perforations grouped in such a manner as to represent the characters embodying the message. A circuit will be completed through the main line and' the corresponding receiving-styluses each time any 5 one of the transmitting-points is placed in elec trical connection with the main line through one of these perforations, provided the two motors are in unison, and that transmittingpoint and the corresponding receiving-stylus will be simultaneously connected with the main line. The impressions will therefore be formed upon the chemical paper,the positions ofwliich ture will confront the poles of the magnet at correspondto the positions of the perforations in the transmitting-slip.

It is designed that for each revolution of the transmitting circuit-closing arm the transmitting-slip shall be advanced a distance equal to the width of one perforation, If, for instance,'there be a vertical line of perforations in the transmitting-slip, the circuit will be completed through each of the transmittingpoints in succession before that line of perforations has been moved from beneath the points. The slip will then be advanced, and a succeedingline of perforations will be brought into position to cause the circuit to be completed through the corresponding points, when Q the circuit-closing arm connects the same with the main line through the corresponding contact-plates.

In the accompanying drawings, Figure 1 is a diagram illustrating the general organization of the apparatus employed for carrying out my invention, and Fig. 2 illustrates certain details in the construction of the same.

Referring to the drawings, A and A rep resent two motors. These motors are designed tobe driven by means of a weight or a spring at approximately the same rates. For the purpose, however, of renderingthe rate of revolution of the two motors entirely synchronous, itis designed to employ an electro-magnet, B, for. modifying the speed of the motor A, to correspond to the movements of the motor A. For this purposeit is designed that once in each revolution of the motors the electro-magnet B shall be vitalized by a current of greater strength than is employed for acting upon the chemically-prepared paper, and that this circuit shall tend to either retard or to accelerate the movements of the motor A as may be necessary. The shaft a of the motor A carries a circuit-closing arm, b,which is connect ed with the main line. Applied to this circuitclosing 'arm are a series of contact-plates, 0, one of which is connected through a conductor,

'2 including a battery, 0, with the earth at G.

In the main line Lthere isa main battery, 0, havingthe same polarity as the battery 0'. At the receiving-station the shaft a of the motor A carries a contact-arm, 12 which is connected in, like manner with the main line L. Applied to this circuit-closing arm is a corresponding series of contact-plates, 0 one of which is connected with theearth at G through a conductor, lflincluding an artificial resist- The electro-magnet B is included in the circuit of the main line, between the circuit-closing arm b and the main line. WVhen, therefore, the circuit-closing arms I) and]; make simultaneous contact with the-particula'r plates 0 and 0 which are connected with the earth, the electro-magnet will be vitalized 1 by a currentdue to both batteries 0 and ,0.

Applied to the shafta is-an armature,=e, which passes, oncein each revolution of the shaft, before the poles of the electro-magnet B. The parts are soadjusted that this armathe moment it is vitalized by the combined action of the batteries Oand 0. Should, however, one motor be slightly in advance of the other, the electro-magnet will be vitalized whilethe armaturev is either slightly beyond or before it has reached the central point of the electro -magnet, and the motor A will thereby be either retarded or accelerated, as may be necessary to bring it into unison with the transmitting-motor. In this manner the ultimate rate of revolution of the two motors, and thus of the two circuit-closingarms, will be rendered synchronous. The remaining series of oircuit-closingpoints c at the transmitting -station are respectively connected with a series of transmitting-points,

ff f, &c., through conductors 1 2 3, 8:0. Likewise the remaining contact-plates of the series 0 at the receiving-station are connected, respectively, with a series of receiving-styluse's, h h? if, &c., through the conductors 8 9.10, &c. The pointsff f &c., rest upon or are pressed toward the transmitting plate or cylinder K, which is of conducting material, and is connected with the earth at G.

The slip P, which is employed for transmitting the message, consists of a strip of paper or other suitable non-conducting material, and it is prepared with perforations, as shown at p, grouped in such manner as to represent the letters and characters embodying the message which it is desired to transmit. This strip is designed to be moved across the plate K by means of a suitable toothed wheel, m. These wheels carry points a, which enter apertures 3, formed in the respective edges of the strip of paper. The wheels m are actuated by means of a wheel, g, which is geared to the shaft of the motor A, and is thus revolved at the speed required for moving the paper strip beneath the transmitting-points f. At the receiving-station the series of receiving-styluses h h h &c., rest upon a strip of chemicallyprepared paper, P. The paper 1?? is moved over the surface of a conductingcylinder, K, by means of a feeding-roller, m which are actuated by means of the motor A at the proper speed relatively to the transmitting-strip P. The styluses are successively placed in connectionv with the main line, through the action. of the circuit-closing arm b and since the moments when they are'so placed in circuit coincide with the moments when the transmitting-points f are connected with the main line, the records produced by the points upon the chemically-prepared paper will coincide in position to theperfora-, tions through the instrumentality of which the circuitiis closed at the transmitting-station, it being understood that the polarity of the battery 0' is such that currents therefrom act upon the paper in a manner well under-- stood. The resistance r, included in the conductorl", is designed toequalthe resistance offered to the current by the chemical paper P and the receiving-styluses.

ICO

I claim as my invention- 1. The combination, substantially as hereinbcfore set forth, of two regulated motors and a main line, two circuit-closing arms, respectively actuated by said motors and connected with the respective terminals of said main line, two series of contact-plates, respectively applied to said arms, a series of transmittingpoints, respectively connected with the contact-plates applied to one of said arms, a series of receiving-Styluses, respectively con nected with contact-plates applied to the other of said arms, a battery and an electromagnet included in the main line, two conductors, respectively connecting one of said contact-plates applied to each motor with the earth, and a battery included in one of said conductors.

2. The combination, substantially as hereinbefore set forth, of two regulated motors and a main line, a battery included in said main line, an electro-magnet, also included in said main line, an armature moving with one of said motors and applied to said electromagnet, a second battery, one pole of-which is for placing the same'in connection with said main line in succession, of apaper-feeding de vice for causing a strip of paper to be moved beneath said points, two toothed wheels constituting a portion of said paper-feeding device, the teeth of which wheels enter perforations formed in the edge of said paper, and

means for controlling the movements of said 0 paper by the action of said circuit-controller.

In testimony whereof I have hereunto subscribed my name this 26th day of June, A. D. 1884:.

HENRY VAN HOEVENBERGH. [L. s.] Witnesses: DANL. XV. EDGEOOMB, CHARLES A. TERRY.

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