US824031A - Telegraphic transmitting-key. - Google Patents

Description

No. 824,031. PATBNTEDJUNE 19, 1906. I. KITSEE. TBLEGRAPHIC TRANSMITTING KEY.

APmmATxoi FILED rs.11.1905.

2 SHEETS-SHEET 1.

arm Wot No. 824,631,. PATENTED JUNE 19, 1906.

I. KITS-EB.

TELEGRAPHIC TRANSMITTING KEY.

APPl-IGATIOK FILED FEB. 11. 1995.

2 SHEETS-SHEET 2.

twi -mea J as (3 H u e n [*oz 5 d r ITED STATEES PATENT OFFICE.

ISIDOR KITSEE, or

PlilLA DELPHIA, PENNSYLVANIA HALF r0 WILLIAM J. LATA, ()F PHILADELPHIA, PENNSYLVANIA.

TELEGRAPH; TRANSMiTTING-KEY.

Patented June 19, 1906.

Application llied February 11, 1905. Serial No 245.221.

To all whom it may concern;

Be it known that. I, Iswon Knees, of the city and count r of Philadel his and State of Pennsylvania, eve invented cert-sin new and useful 1m rcvcments in Telegraphic Trams mitting eys, (Close No. 236,) of which the following is s. specification.

My invention relates to on improvement in telegraphic tnansmitting-keys, and has for its object to produce a key whereby current-reversals may readily be transmitted. Referring to the drawings, Figure 1 is a plan View of the d evicc embodying m invention with the electrical connections s men in diagram. Fig. 2 is a side elevation of the same. Fig. 3 is a. plan View oi my invention in e modified form.

A is the key lever or tongue secured to the stationary part (1 with the interposition of the spring A in a manner so as to he movable horizontally. This lever is provided with the contacts a and (1 respectively, both of these contacts being in electrical connection with each other end the lever.

B and B are two springs escorted and held in position by the two binding-posts E: and a, respectively, these springs being non mall y in contact with the two contest-s C and C, respectively.

D and D are two adj usteble contacts. 7

The spring B is )rovided wit h the contact a, and the spring l3 with the content c.

The lever A is connected to the line of transmission F eitlier directl or with the interposition of the necessary devices. This leverA.

occupies a. central position, as is illustrated in Figs. 1 and 3.

The binding-posts I) and D are each con nested with source of current, here shown as the, batteries 1 2, the binding-post 1) con nected through wire E with the of battery 1, the )ositive pole of whic is grounded at Z, the winding-post. l) connected through wire E with the positive pole of the bette 2, the nega tive pole of which is groun ed at Z. The contact C is connected with wire G, grounded at Z. T he contact C is through wire H electrically connected with the spring 13, and the spring B is electrically connected with the lever A.

N ormslly-that is, when the ke is not in use-the lever A occupies a. centr position,

negative ole through this ground, and I as sta. Led above, and is only connected with the transmitting line F and through the spring B, contact 0, wire H, spring B, contact 0, wire G to the round '25. The contacts I) and D are normal y out of connection with any part of the key, excepting the batteries 1 and 2, respectively.

This kcyis more specially designed to transmit impulses of opposite dlrection or in other words, to transmit true reversals, as is outlined in Letters Patent No. 777,259, granted to me under date of December 13, 1904, for a system of telegrsphy, wherein true reversals are used, c transmitted impulse of one polarity sways being followed by an impulse of oppositc polarity. In some cases-es, for instance, in submarine telegraph it is of great edventsge that soon as an impulse is sent over the cable the terminal of the same should be wounded at once. The reason for this is wel understood by persons versed in the art, and it suffices to say here that the dis charging of the condensers connected to the ceble, as well as the cable itself, is facilitated eve provided in this transmitting-key the automatic grounding through the intermediate contacts C and C and the springs B and B.

The operation of this key is as follows: The operstor in transmitting ire nlses over the line moves the key-lever to t 1e right or left, as the case may be. It. is supposed that he first wishes to transmit a positive impulse. He therefore in accordance with the arrangement as illustrated in Fig. 1 has to move the lever to the left, and in the course of this movementthe contact a on the lever A connects with the contact a on the spring B and. pushes this contact away from the contact O and in connection with the contest 3. As soon as through the movement of this lever the connection of B end'(] is broken the ground connection of the line is and when in its further movement the point a connects through the'point a with the contact D the connection of the use with the battery 2 is made, and an electrical impulse flows in the direction of the arrow from buttery 2, through wire E, point- D, a, a", A, A", .1. and (as the line of transmission is green ed on the other terminal) heck to the ground Z. As soon as the operator releases ASSlGNOR OF ONE- also broken,

the lever A the same will assume its central or normal position, and the pressure on the spring B being removed the same will break its connection with the contact V and will connect with the contact C, thereby efl'ectually grounding the line of transmission ii. The movement of the lever A to the right has the same efl'ect as the movement of the lever to the left, with the exception that now an impulse flows over the line of a polarity oposite to the polarity of the former impulse.

e lever in moving toward the right first connects its point a with the point a of the spring B, moves this spring B out of contact with the point (),and moves the point a) toward and in contact with the point 1). Through the breaking of the cont in. between C and spri w B the round connectt n of the line F is bro en, an through the contact of a and a and D the connection of the line F with the battery 1 is established, which connection allows a current to flow from the posi- F tive pole toward the ground Z, and (as the line of transmission is dgrounded on the other terminal) through sai line, lever A, contact a, contact "9, D, wire E, back to the battery 1. The releasing of the lever A. will again break the connection between it and the con tacts c andD, whereby the flow of the battery will cease, and the spring B released of its pressure will'a ain contact with 0, thereby again elfectual y grounding the line F.

In 3 I ave omitted the automatic grounding device, and this key is best adapted for such lines where the capacity is not at enough to necessitate the grounding of 0th terminals after each transmitted 1mpulse. In this figure similar letters indicate similar parts.

The movement of the lever A to the right sends a negative impulse over the line and the movement of the lever to the left sends a positive impulse over the line. In its normal position-that is, when not in usethe lever does not connect with any of the batteries.

I have illustrated in Figs. 1 and 3 the source of electric current as to consist of two batteries each grounded; but it is obvious thatinstead of two batteries one large batter may be used grounded in the center or mi dle, which in realityis the equivalent of a battery split in two.

Having now d ascribed my in vcntion, what I claim as new, and desire to secure by Lettors Patent, m

1. in combination with a line ol trans1nission, a trans:cutting-key mubracing a main. lever connected to said line, a contact --lcver on car-l1 side of said main. lever connected each through stationary coi'itacts with the ground, stationary contacts connected to sources of current and means whereby through the moven'icnt ol the main lever, the line counmztml to one or the other of said sources.

2 A trausniitting-key embracing a support, a main lever, means to connect said main lever to an outside circuit, said main lever provided with contactim points on each side, a CUIllltUlJ-lCVQl" on one 1 side of said. main lever, a stationary contact for each of said contact-lewrs, one of said stationary contacts connected with one of said contactlevcrs, the second ol said stationary contacts provided with means to connect the same to an outside circuit, the second of said contactlevers connmgtcd to the main lever, a bindi post on each side of said movable l vers, erib h ol said binding-posts provided with means to connect the same to an outside circuit.

3. 1n con'ibination with a line of transmis' sion, a transmittingkcy prov ided with means to connect said line, when in normal position, to the ground and provided with means to break said "IOllllil and connect said line with one pole oi a source of current if moved to the right and with an opposite ole of a source of current if moved to the le t.

4. A telegraphic transmitting-key provided with a movable lever, stationary contacts, and movable conductors interposed between said lever and said contacts, said movable conductors normally in electrical contact with. each other, and with the movable lever, and adapted to be brought out of con tact with each other through the movement of said levdr.

In testimony" whereof I hereby sign my name, infthe presence of two subscribing witnesses,this 9th day of February, A. D. 1905.

ISIDOR KITSEE. Witnesses E rrn R. STLLLEY, I C. Yn'rrnn.

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