US136251A - Improvement in telegraph-repeaters - Google Patents

Description

2 Sheets--Sheet I.

L. T. LINDSEY.

Telegraph Repeaters.

'NO. 136,251.- Patented Feb.25,1873.

Imaemor.

fi wwmm Attorneys.

AM. PHara-umaswH/c ca Mx (ossmuzlq mamas) I'V/Itnese? s 2 sheets shegg L. T. LINDSEY.

Wee/261 AM PIIOTD-LIIHOGRAHIIC 1:0. 1v. {(maomvels PnbeEss.)

UNITED STATES PATENT QFFIGE.

LANDY T. LINDSEY, OF JACKSON, TENNESSEE.

IMPROVEMENT IN TELEGRAPH-REBEATERS.

Specification forming part of Letters Patent No.136,251. dated February 25, 1873.

To all whom it may concern:

Be it known that I, LANDY TUNSTALL LIND- sEY, of Jackson, in the county of Madison and in the State of Tennessee, have invented certain new and useful Improvements in Automatic Telegraph-Repeaters; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters and figures of reference marked thereon making a part of this specification.

In the drawing, Figure l is a general view and plan. Fig. 2 represents the arrangement of the repeaters for being worked by alternately opened and closed local circuits. Fig. 3 represents the arrangement of the repeaters for being worked by perpetually-closed local circuits.

The reference letters and figures represent the same parts in the different figures, and their application will appear as the specification proceeds.

The object of my invention is to provide an automatically acting or changing telegraphic repeater, simple, reliable, and void of many of the mechanical auxiliaries heretofore used in other improvements for the same purpose.

In Fig. 1, MM represent relaymagnets D D, their respective armature-levers; d d (1 d, the supports for the adjusting-screws i t" t 23, respectively. P is an adjusting-post, which controls the springs p p, which are attached to the armature-levers D D. I) b c c are binding-posts for receiving the wires of the two main-line circuits, whence they lead through the instruments and keys to the ground. L-

L are sounder and repeatinglevers, controlled by the magnets H H. A A are armatures thereon, and m m and n n the posts upon which they respectively vibrate. K K are ordinary transmitting-keys; S S, switches for increasing or diminishing the resistance furnished by the resistance-coils R R, which may be done by moving the bars on the buttons 8 s s s. a a a a are bindingposts for the batterywires of the local circuits, which include magnets H H. m n are posts, and 0 0 springs operating thereon, for the continuation of the circuits through the magnets H H contacts made at D t D t are broken, as will be hereinbelow described. m n are posts, and o 0 springs operating thereon for opening and closing the circuit of the main line in the ordinary way. .1

In the drawing, Figs. 2 and'3, I have disposed the various parts above mentioned in a manner to show more comprehensively the course and operation of the circuits, avoiding those parts not essential to the explanation of the working part of the instrument.

In Fig. 2 the eastern and western main-line circuits are represented by dotted lines, and pass, respectively, to the springs 0 0 of the opposite sounder-lever,'and 'v'ia posts m a, respectively, thence to the ground.

Likewise, the ordinary local connections for the sounder-magnets, viz For magnet H 'vz'c wires 1 2 3, battery B, wire 4, armature-lever D, and adj usting-screw t". For magnet H eta wires 5 6 7, battery B, wire 8, armature-lever D, adjusting-screw t are as ordinarily arranged in other methods.

In Fig. 3 the terminal wires 3 19 and 7 20 of magnets H H, respectively, proceed directly to the poles of each battery, and do not pass through the usual points of contact D t D 2" controlled by the relay-magnets M M, respectively.

My invention consists in providing means whereby the circuit of either magnet H or H 'will be retained complete through such ma net, thus keeping its lever and the main-line circuit there established continually closed while the other repeating-lever is in operation, and vice versa; and in such. additional connections as are requisite for the formation, when so required, of extra shunt-circuits for annulling the power of either magnet by furnishing a shorter route, and one that offers less resistance for the returnof the circuit to the opposite poles of the battery from whence itstarted. This I accomplish in two ways, i!- lustrated by Figs. 2 and 3: In Fig.2, by running extra wires 13 16 from the levers D D to springs o 0, respectively, and extra wires 14 15 from post m to magnet H, and wires 17 18 from post 41 to magnet H. WVhen, therefore, the levers L and L descend, with springs o 0 to contact with posts m n, arepetition is made of the connection formed by the re- 'lay-magnet points. D t and D i, respectively, which maintains the circuits unbroken through magnets H H after levers D D have fallen back from the points above mentioned.

Having thus shown how the levers L L can be made to act as the immediate agents for preserving the circuits which hold them to the poles of their respective magnets, it is necessary to show how this reciprocating influence is to be destroyed when it is desired the lever should lift and sever its contact. This I accomplish by the formation of shunt-circuits, one for each of the magnets H H, which are much shorter, and constructed of much larger wire, or of bars of metal as large as the immediate demand may require, and which, consequently, offer so much less resistance to the passage of the current that, whenever these circuits are completed, the electric current is readily conducted by them, and the magnets in the circuits thus shunted so weakened as to admit of the levers thereof being readily thrown up by the now preponderating influence of its spring h or h. These shunt-circuits are formed when the levers D D are drawn back against adjustingscrews 41 i, and may be thus traced: For magnet H, starting from adjusting-screw 2', via wire 11, lever L, post in, wire 12, battery B, wire 8, to lever D, which forms contact with adj listing-screw 13. For magnet H, starting from adjusting-screw i, we wire 9, lever L, post it, wire 10, battery B, wire 4, to lever D, which forms contact with adjusting-screw '13. Each of these shunt-circuits, thus completed, includes within it either battery B or 13, thus cutting off the passage of the current through magnet H or H just in proportion as it affords a return route to the battery shorter or of less resistance. It therefore follows that the shunt-circuits, formed as hereinbefore described, may be composed of metallic wires or bars of such increased conducting capacity as may be found necessary to insure the greater part of the current being conveyed by that route, and the magnet of the opposing circuit be thereby so weakened as to lose its control of the lever heretofore under its influence.

In the ordinary operation of these repeaters one lever will remain perfectly still, held down by the reformation of the circuit through the magnet which controls it, as hereinbefore described, while the other is working, and vice versa.

The shunt-circuits must always be formed of sufficiently large conducting mediums to offer greatly less resistance to the passage of the currents than the circuits which include magnets H B. When, however, large metallic wire or bars cannot be had, the necessary proportion between the shunt-circuit and the one to which it is opposed may be obtained by inserting resistance'coils, which will have the effect to lengthen the circuit reformed by the operation of the levers L L, when they bring springs 0 0 in contact with posts m n, respectively. This is illusto a shunted circuit when formed of any-sized wire.

In order that any liability of both repeat:- ing-levers having the circuits of their main lines, respectively, broken at the same time may be avoided, a metallic connection, repre sented by wire 2], Fig.2, is extended from mag net H to post n, which has the effect to complete the circuit of this magnet in such a con tingency, and thus restore any disorder this state of afiairs might produce.

In Fig. 3 the terminal wires 3 19 7 20 of the magnets H H run directly to the poles of their respective batteries, forming a perpetually-closed circuit.

The lever of either magnet may be brought into use by the operation of the shunt-circuits which remain unchanged, the lever of the other magnet remaining still meanwhile. The operation and effect of the shunt-circuits remain the same in either event, whether employed as in Fig. 2 or in Fig. 3.

Having thus fully described my invention, what I claim as new, and desire to'secure by Letters Patent, is-

l. The combination of the lever L of a sounder-magnet, H, spring 0, post m, and electrical connecting-wires, for the purpose of keeping the circuit of the soundermagnet closed through it beyond the time allowed by the contact of the armature-lever of the relaymagnet with its adjusting-screw, substantially as herein set forth.

2. The combination of the adjusting-screw i, lever D of the relay-magnet M, lever L of the sounder-magnet H, post at, and electrical connecting-wires, for the purpose of forming a shunt-circuit to weaken the current in the sounder-magnet H, substantially as herein set forth.

3. The combination of the lever L of the sounder-magnet H, post a, sounder-magnet July, 1872.

L. T. LINDSEY. Witnesses:

I. B. TREE, JAS. K. STEPHENS.

Images