US1075504A - Telegraph-transmitter. - Google Patents

Description

G. E. SGRIBNER.

TELEGRAPH TRANSMITTER.

APPLICATION FILED 110V. 28, 11111. 11111111111111 AUG. 14, 1913.

1,75,54.-. Patented 061.14, 1913.

hive/770w.-

CHARLES E. SCRIBNER, OF JEEICHO. COMPANY, OF NEW YORK,

VERMONT, ASSIGNOR TO WESTERN ELECTRIC N. Y., A CORPORATION OF ILLINOIS.

TELE GRAPH-TRANSMITTER.

Specification of Letters Patent.

Patented Oct. 1451913.

Application filed November 28, 1911, Serial No. 662.846. Renewed August 14, 1913. Serial No. 784,792.

To all whom it may concern:

Be it known that 1, CHARLES E. SoumNER, citizen of the United States, residing at Jericho, in the county of Chittenden and State of Vermont, have inventeda certain new and useful Improvement in Telegraph- Transmitters, of which the following 15 a full, clear, concise, and exact description.

This invention relates to printing telegraphs, and more particularly to a printing telegraph transmitter from which combinations of selecting impulses are sent over two main line conductors to a receiver located at a distant station.

An object of this invention is to provide an impulse transmitter capable of sending a plurality of characteristic impulses, there being one controlling relay for each characteristic impulse.

Another object of this invention is to provide a transmitter in which a'combination of two impulses is sent by a single contact closing action of a key and in which the number of parts necessary for a successful operation of the device is reduced to a minimum.

In the drawings is shown a diagrammatic illustration of the system embodying my invention and in which the mechanical details of the key lever is shown in perspective.

The main line conductors L and L are adapted to be intermittently connected with a source of current 110 through the medium of the current control relays 100, 101, 102, 103, 104 and 105. These relays 100 to 105, inclusive, may be selectively operated in predetermined groups to intermittently connect the source of current 110 to the main line conductors L and L to send a combination of impulses over the line conductors.

The form of key used to selectively control the circuit through the current control relays consists of a plate 120, carrying at the front thereof a slotted bar 121, and carrying intermediate its ends a transverse bar 122, to which is pivoted in a convenient manner the key lever 123. A stop plate 124 is provided to limit the verticalmovement of the key. The key lever is held in its normal position by the spring 125. A rearward extension 126 of the key lever 123 is adapted on the downward stroke of the key to move into engagement with a sliding button 127, which button is carried on the rod 128. Mounted on a plate 129.. attached to the side plate 120, are two contact springs 130, these springs in the normal position of the key lever being held apart by the tube 131, also mounted on the rod 128. A contact block 132 with which both the springs 130 contact in the lower position of the key lever is connected to ground through the conductor 150. W'hen the key lever is depressed the extenmen 126 moves into engagement with the button 127 and the rod 128 and tube 131 are moved downwardly through perforations in the plates 121 and 129. When the tube 131 passes below the springs 130, these springs move into engagement. with the block 182, completing a circuit through a selected current control relay in a manner to be hereinafter described. Upon the release of the key lever it is returned to its normal position by the spring 125, and the tube 131 is moved between the springs 130, moving the same from engagement with the block 132.

Let it be assumed that the operator wishes to send a combination of impulses over the main line conductors to select a character at the distant station. Let it be further assumed that she desires to select at the distant station the character E and that the combination of impulses to select this character is composed of two impulsesa positive impulse over line L followed by a negative impulse over line D. The key cor responding to this character is depressed allowing the contact springs 130, controlled thereby, to move into engagement with the contact block 132. circuit is closed which may be traced from battery 151, transfer rclay 152, lever 153, through one of the energizing windings of the current control relay 100, I conductor 154, contact spring 130, contact block 132, conductor 150, to ground. As a result of the closure of this circuit current control relay 100 is energized attracting its armatures, placing the positive pole of battery 110 to the main line conductor L Transfer relay 152 is energized, attracting its armature thereby breaking the circuit through the current control relay 100 at the lever 153, which is thereby deenergized, removing the battery 110 from the line L and thus determining the length of the first impulse of the combination. When the armature of transfer relay 152 moves into engagement with the lever 153, a circuit is closed which may be traced from battery 151, transfer relay 152, armature thereof, energizing Winding of the current control relay 101, conductor 155, contact spring 130, contact block 132, conductor 150, to ground. The battery 110 is again connected to the main line conductor L but in this instance the current control relay 101 connects the negative pole of the battery to the line. The length of this second impulse of a combination Will be determined by the tube 131, moving into engagement with the contactsprings 130, moving them out of engagement With the contact blocks" 132, thus removing ground from the selecting circuit, and all parts of the device return to normal.

Any other combination of character selecting impulses may be sent in the manner described. In each instance -tWo current control relays are selected, the selecting circuit passing through the transfer switch. The application of current for the first impulse is controlled by the proper current said current control means, and a transfer relay'operating to cause the successive en- 'ergization of the selected group of currentcontrol means. a

2. In an electrical impulse transmitter i Witnesses:

for transmitting a series of characteristic impulses, the combination of. a series of current control means, one for each characteristic impulse, means for simultaneously selecting a group of the current control means, and electromagnetic means for causing the successive operation of said selected current control means.

3. In an electrical impulse transmitter, the combination of a plurality of current control means, means for simultaneously selecting a predetermined group of said current control means, a source of current controlled by said current control means, and electromagnetic means for causing the successive operation of the selected group of current control means to send a combination of impulses from said source of current to a main line,

4. In an electrical impulse transmitter, the combination of two main line conductors, a source of current adapted to be intermittently connected to said main line conductors, current control relays, and means for selectively operating said current control relays in pairs, a transfer mechanism for shiftingthe control of said source of current fromone to the other of said selected pair a of current control relays.

.In Witness whereof, I hereunto subscribe my name this 21st day of November A. D., 1911. I a CHARLES E. SORI-BNER.

IRVING MACDONALD, F. P. MoIN'rosH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of fatents Washington, D. G.

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