US877914A - Telegraphic transmitter. - Google Patents

Description

N0. 877,914, PATENTED FEB, 4. 1908. P. B. DELANY. TBLEGEAPHIG TRANSMITTER.

APPLIOATIO'N FILED MAR.31.1906.

LINE- I J g n EIG -Q i i o E I h PATRICK B. DELANY, or some ORANGE, NEW JERSEY.

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Specification of Letters Patent.

Patented Feb. 4, 1908.

Application filed March 31. 1906. Serial No. 309.042.

To all whom it may concern:

Be it known that I, PATRICK B. DELANY,

' a citizen of the United States, residing at arrangement, any

South Orange, county of Essex, State of New Jersey, have invented certain new and useful Improvements in Telegraphic Transmitters, of which the following is a s ecification- This invention relates to t at class of trans-- mitters in which a neutrally disposed key is moved in one direction for transmission to line of dots, formed automatically by transmitting devices, the number of. dots transmitted being dependent u on the length of time that the key is so hel .by the operator: and, when the key is moved in opposite direction a dash is transmitted during the period the key is so held or in cable working, dots automatically formed may be transmitted when the key is in the latter or dash position. The present invention comprises an improvement u on the organization shown in my ap lication No. 262,097, filed May 24, 905 w ich discloses and claims a transmitter of the general character herein described. The claims in this application are limited to such improvement, or detail structure and broader subject matter that may be read u on the transmitter herein disclosed being 0 aimed, or to be claimed, in said application Serial No. 262,097. 7 -The im rovement constituting the subject matter 0 the resent application is an arran ement offtiie apparatus by which a single ocal batterymay be used in conjunction with two ma ets one for sending signal impulses into t e line, and the other for controlling the circuit of the first one.

In the accompanying drawings: Figure 1 is a diagrammatic view showin an or anization of transmitting devices or sent ing, in the manner stated, dot and dash signals according to the Morse or other similar codez Fig. 2, a similar view showing an organization for cable transmission in which uniform impulses are transmitted, those of one p0 lanty re resenting dots, and those of the apparatus are shown in other das es.

Referring to Fig. 1, the various parts of the normal or inactive position, the line I11b8l1'1 closed at two-point switch a, as convenient y located for the op-, erator. as is the switch of an ordinary Morse key. The key I; rocks about an axis 0 but is normally maintained in central or neutral position by a spring d attached'to the key Tandheld between pins or posts 6. If the key into the line through contacts a, 11).

be moved to the right, current from local battery f will pass by; wire g to magnet h; thence by wire 11 to contact? carried by the armature lever of another magnet, and by contact t and wire is to key contact m. Magnet h is energized and its armature lever being attracted,

- its insulating contacts n, 0 come together,

thereby closing, through wire p, the circuit of magnet q, whose circuit is y wire 1", to local battery f and by wire s to contact 11,. The armature lever q being attracted, contact 7' carried thereby passes out of engagement with stationary contact t, the circuit of magnet h is opened and its armature lever returning to normal of ma net q. In t is way automatic actuation oi botharmature levers at uniform rate or speed is set up and will be maintained as loglig as the key is held to the right or dot s1 e.

it represents a main battery or source of energy having one ole grounded, and its other pole connected with a contact stop 1), against which bears an insulated contact w, carried by armature lever of h, and connected plosition breaks the circuit to line as, so that automatically uniformly spaced or formed dots Will be transmitted from the battery to into the line during the period that the key is held against its contact m, the number of .dots so transmitted being dependent upon the period of time during which the key is so held. Since the dot signals are locally audibl manifested to the operator by the action 0' the a paratus, he knows how long the key shoulil be held in position to effect transmission automatically of the desired number of dots.

When the is 'moved to the left, the circuit of i'nagnet 7b is closed through the key contact y, wire a, winding of magnet h and wire 9 to local batter f and thence to the key. A dash signal 0 any desired period or length may therefore, at will, be transmitted When the operator desires to practice manipulation of the key without transmission of the sig-' nals into the line, switch a is closed; and

when he desiresto transmit a message to. line, the switch is opened, thereby putting I the line and battery contacts w, c, in-transmitting circ uit.

It is contemplated that with the exception of the finger 'iece of key I), and knob of switch ct, all 0 the ap aratus, with-its single cell of dry battery, wi 1 be inclosed in a suitable box, making it compactand portable.

I from the best style of electro magnetic transmitter; and that will be entirely independent of the operators style of Morse manipulation so far as (lots are'concerned. All of the connections of the devices when the key is closed to one side or the other are effected with precision and uniformity, both as to each signal and as to the regularity and pre cision of the formation of a series thereof.

The speed of automatic formation of dots may be regulated by changing the play of one of the armature levers, preferably that of magnet g, leaving the gap between the transmitting conta zts e, w, unchanged. The impulses transmitted to line by this instrument, formed with such precision and uniformity, will carry further and at greater speed of transmission than those of ordinary Morse keyworking. Moreover the operator is relieved from muscular and nervous strain since he is'required to make forty-eight less movements intthe formation of the Morse alhabet than are required with ordinary l orse key working. Obviously the lever of either electro magnet may carry the line transmitting contact.

Fig. 2 shows diagrammatically anorganizatio n, in accordance with this invention, for cable transmission in which all of the impulses sent to line are dots. The local connection for both sidcs are the same as those for the dot side illustrated in Fig 1, except that the armature lever of magnet q carries the line transmitting contact w, and key 1) is -moved to the left for transmitting short signals representing dots, and to the right for transmission of short signals of opposite polarity representing (according to the cable code) dashes. The connections for the dot side are lettered the same as in Fig. l, and those for the dash side have the same lettering with the exponent 1, added in each instance. The pole changing arrangement for the main or transmitter battery, or source 4, is that usuallyemployed in cable working.

I claim as my inventionz l. A telegraphic transmitter comprising the combination. of a transmitting key, a single local battery, its circuit, an electromagnet connected in the local circuit with the battery and key, said magnet being energized when the local circuit is closed by the key', and a second. electro magnet also connected in local circuit with the battery, and contacts and circuit connections wherebywhen the [i'rst named magnet attracts its armature lever the circuit of the second magnet is closed, and on attraction of its armature lever, the circuit 01 the first magnet is opened, and line transmitting contacts controlled by one of such magnets, whereby so long as the .-key.closes the. local circuits of the first magnet the circuits of both magnets are automatically opened and closed at a regulated uniform rate and transmission of a succession of dot signals effected.

2. A telegraphic transmitter com rising the combination of a transmitting .ey, a single local battery, its circuit, an electro magnet connected in the local circuit'with the battery and key, said magnet being energized when the local circuit is closed by the key, and a second electro magnet also connected in local circuit with the battery, normally separated contacts included in the circuit of the second magnet and controlled I by the armature lever of the first magnet, adapted to automatically close when the armature lever of the first magnet is at tracted, normally closed contacts controlled by the armature lever of the second magnet included in the local circuit of the first mag net, and automatically opened when the ct. is ated by one armature lever of the second ma tracted, and line contacts control of said 1nagnets. 1

3. A telegraphic transmitter comprising the combination of a local transmitting member, a local battery, itscircuit, an electro( magnet connected In said local circuit with said battery and transmittingmember, said magnet being energized when the said local,

circuit is'closed by said transmitting mem ber, a second electro magnet also connected with the said battery, line transmitting-con tacts controlled by one of said electro magnets, contacts and circuit connections whereby when the first electro magnet attracts its armature lever the circuit of the second electro magnet is closed, and on attraction of its armature lever the circuit of the first electro-ma net is opened, whereby, so long as the loca transmitting member closes the 'local circuit of the first electro-magnet, said electro-magnet and'the second electro-magnet are automatically opened and closed and a succession of impulses sent-into the line by the line connected contacts.

4. A telegraphic transmitter comprising the combination of a local transmitting member,- a source of electric ener y eon-' nected thereto, two electro magnets a so eonnectcd to said source of electric-energy, contaets in the path of said transmitting member whereby the circuit of said source of electric energy may be completed through either of said electro ma nets separately, two other electro-magnets a so connected to said source of electric energy, contacts controlled by the first two electro-magnets, whereby said souree' of electric ener y is completed 1 through the second two electro-magnets and contacts controlled by the second two electro-magnets for opening the circuits of the lie first two eleotto msgnets, whereby automatic vihre-tionof the armature levels of one of the first two elects-magnets and one of the second two al z'o sets is produeed and maintained so iong' as t Zoos transmitting member is hehi egeiinst of contacts, and whereby, automate e vihretion oi. the armature levers oi the other the two eleotro-megnets and other of second two ele'otro-megnets is produced. and maintained sobng as the local transmitting memher is held against its other Contact, and line I connected contacts controlled by two of said armature levers for sending automatically made signal impulses to a distant station.

In testimony whereof, I have hereunto subscribed my name.

PATRICK B. DELANV.

' L. F. BROWNING,

t Vhtnesses t E. F. WICKS.

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