US333298A - healy - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

- O. L. HEALY.

PRINTING TELEGRAPH.

No. 333,298. PatentedjDec. 29, 1885'.

(No Mddel. 4 2 Sheets-Sheet 2. 0. L HEALY;

PRINTING TELEGRAPH N0.333,298. v Patented 1390.29, 1885'.

I I I I N- PEYERS. PMwl-ilhngnpher. Wahinglon, 1Q

UNITED STATES PATENT EEIcE.

CLARENCE L. HEALY, OF BROOKLYN, ASSIGNOR TO STEPHEN D. FIELD, OF YONKERS, NEW YORK.

PRINTING-TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 333,298, dated December 29, 1885.

Application filed September 4, 1885. Serial No. 176,157. (No model.)

To all whom it may concern:

Be it known that I, CLARENCE L HEALY, of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Printing-Telegraphs, of which the following is a full, clear, and exact description, and will enable those skilled in the art to which they appertain tomake and use the same, reference being had to the accompanying drawings.

Theseimprovements relate generally to that class of printing-telegraphs in which one or more revolving type-wheels bearing the requisite characters are used, with mechanism for pressing a ribbon or strip of paper upon the characters; and the improvements relate particularly to the circuits which run to the printers and which are provided with keys or other similar means for closing them and establishing the press or printing currents.

It has been customary for the operator to hold the keys of the press-circuits closed during such time as is necessary for the press or printing mechanism to fully act; but it is found that this is very difficult to properly do, and particularly when high speed is required, experience showing that the circuit will be held closed too long, and thus time will be wasted, or that the circuit will not beheld closed long enough, and the press devices will act only feebly and thereby fail to print or printvery poorly.

The object of the invention, therefore, is to provide means which will act independently of the operator who puts them into action, to hold the press circuit or circuits closed the requisite time to effect the proper operation of the press devices, and will then break such circuit or circuits.

The invention consists in a mechanical lock, which is connected with the circuit-closing key of a press-circuit and is arranged to lock or hold the circuit closed when the key is re leased, and an electro-magnet connected with the press-circuit and operating to open or disconnect said lock and thereby break the circuit.

Figure 1 shows a simple form of lock embodying the invention, which look is connected with a key andis located directly in a presscircuit of a printing-telegraph. Fig. 2shows the key-boards and transmitting mechanism of a printing-telegraph, which transmitting mechanism is provided with looking mechanism embodying the invention, this form of transmitting mechanism being arranged to work the type and press mechanism of the printers through a single circuit. Fig. 3 shows the same mechanism arranged to work separate type and press-circuits. Fig. 4 shows the press-circuit part of another form of transmitting mechanism, which is provided with a lock embodying the invention. Other forms of transmitting mechanism are possible, but

.these views suffice to illustrate the application of the invention.

In Fig. 1, A represents the press-circuit, which is connected with the latch or spring B and runs through the magnet O and to the armature-arm D of the magnet. The arma ture-arm is provided with a catch, E, and has a spring, F, by which it can be made to respond more or less slowly to the attraction of its magnet. The magnet also is constructed to act rather slowly. G is a key bearing upon the spring, but, preferably, is not fastened thereto, though, manifestly, it might form a partof either the latch or spring B or of the armaturearm D. When it is desired to close the press circuit to effect the printing of a character in the printing-instruments to which it runs, the key is depressed and thereby causes-the spring to be caught and held by the catch on the armature-arm and the circuit to be made. The magnet receives its full charge a short time after the circuit has been made, and when the press mechanism of the printers has operated, and thereupon draws the armature arm away from the spring and breaks the circuit. It will be seen that by this device the duration of the presscurrent is automatically regulated and independently of the operator who makes the circuit. He has but to close the circuit, and upon so doing he may at once release his hold upon the key or other device that is manipulated to close the circuit, as the further operation of the circuit is done independently of him. This not only makes the printing certain and uniform, but it also results in a gain in the speed of transmitting news, for

the requirements of skill are lessened and the operator is freed from responsibilities that heretofore have acted to retard rapid and accurate manipulation.

In Fig. 2, H is a transmitting apparatus driven by any suitable power and arranged to send rapidly alternating currents to the typewheel magnets I of the printers, the pressmagnet J being slow in action and not capable of responding to such currents. K is a ratchwheel on the same shaft as the transmitter, and its pawl L carries the armature of the electro-magnet IWI, which is in the circuit leading to the printers and is constructed so as not to be operated by the typecurrents. a rotating-arm driven from the transmittershaft and movingjust below the keys (only one of which is shown) of the key-board P. The'transmitter is driven at a speed such as prevents the pawl L engaging with the ratchwheel K. WVhen, however, it is desired to prolong a current sufficiently long to operate the press-magnets, the key representing the character to be printed is depressed and the arm N is arrested by that key with the corresponding notch in the wheel K directly under the pawl L, which thereupon is drawn into such notch and holds the transmitter indef, pendently of the key that arrested it, the operator being free to release the key the instant the arm N is arrested. The current that is thus prolonged first charges and causes the press-magnet to operate, and immediately alter the printing has been effected the ratchmagnet becomes fully charged and releases the transmitter by withdrawing the pawl, thus interrupting the press-current and reestablishing the type currents.

In Fig. 3: the last-described mechanism is shown as arranged to work separate type and press lines. The magnet Q is arranged in the type-circuit and is not responsive to the typecurrents, and the pawl magnet M is located in a local circuit which contains the pressrclay R, and is controlled .by the magnet Q. Whenthe transmitter is arrested,the sustained type-current brings magnet Q into action and closes the local circuit and the press-circuit, and after the local circuit has been held closed long enough to insure the proper action of the press mechanism, the pawl-magnet acts to release the transmitter as before.

In Fig. 4 the transmitter shaft is arrested through the medium of a sunflower, S, on it, a clutch-magnet, T, connected therewith, and short electric circuits connecting the N is.

clutch-magnet with the keys of the key-board. When a key is depressed and the revolving arm of the sun-flower closes that circuit, the clutch-arm U of the clutch-magnet arrests the transmitter, and a dog, V, is drawn under its outer end, thus holding the transmitter independently of the key-board. The clutch also acts to close a local relaycircuit, W, which controls the press-circuit and contains a slowly-acting magnet, X, that comes into action in time to Withdraw the dog V after the printing is done, and release the transmitter.

It is to be noticed that the devices herein described are mechanical circuit closers or press-circuits of printing-telegraphs, for the purpose herein described, has already been patented to me, and does not therefore form any part of the present invention.

What is claimed as new is 1. In combination, in a printing-telegraph,

.a press circuit, a circuit closing key, a mechanical lock arranged to hold the circuit closed independently of the operator, and an electro-magnet connected with the circuit and operating to open said lock and interrupt the press-current when the printing has been effected.

2. In combination, in a printing-telegraph, a press circuit, a circuit closing key, a mechanical lock connected with said key and arranged to close and hold the circuit closed independently of the operator, and an electromagnet connected with the circuit and arranged to disconnect said lock whenthe printing has been effected.

3. In combination with a press-circuit of a printing-telegraph, a transmitter for sending out type-currents, a mechanical lock operated by the keys of a key-board and arranged to arrest the transmitter and hold it independently of said keys while the press-currents are being sent out, and an electro-magnet connected with the press-circuits and arranged to open said lock andrelease the transmitter.

CLARENCE L. HEALY.

Witnesses:

RoBT. F. GAYLORD, DANIEL H. DRISOOLL.

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