US1214989A - Automatic telegraphic or radiotelegraphic transmitter. - Google Patents

Description

E. BELIN AUTOMATIC TELEGRAPHIC OR RADIOTELEGRAPHIC TRANSMITTER. APPLICATION FILED MAR. 12. 1914.

Patented Feb. 6, 1917.

2 SHEETS-SHEET 1 t. BELIN. AUTOMATIC TELEGRAPHIC (1R RADIOTELEGRAPHIC RANSMITTER. APPLICATION FILED MAR. 12, 1914.

3d- M L Lu 1 EDOUARD BELIN, F PARIS, .dEANCE.

AUTOMATIC TELEGRAPHIC OR RADIGTETJEGEAIHXG TRAlllStEIIT'lEER.

Specification of Letters Bate-m.

Patented Feb. i 3917.

Application filed March 12, 1914. Serial No. 89.42%.

To all whom it may concern:

Be it known that I, Eoounnn Benin, a citizen of the Republic of France, residing at Paris, in the Republic of France, have inventedcertain new and useful Improvements -in Automatic Telegraphic or Radiotelegraphic Transmitters, of which the following is a specification.

The object of the present invention is to obtain the automatic sending of signals with the maximum amount of precision for transmitting to a distance by means of telegraphy or radio-telegraphy. It is particularly rpplicable to the sending of signals controlling telegraphically the relay which controls the radiotelegraphic station transmitter. The general arrangement, which will be described, can equally well heapplied to every case in which the operation oi the appam ratus controlling the sending of the signals is insured at any desired time hymeans inde-.

pendent of the apparatus. The present invention is described with reference to the sending oi signals, or the like from a radiotelegraphic station controlled by an astronomical clock. I

On the drawings herewith the general scheme of an. installationis shown comprismg:

Figure l, the synchronizing of the con-- trolled pendulum by the main pendulum.

Fig. 2, the stylus and its actuating mechanism.

Fig. 3, a detail of the circuit closer for returning the drum 1). p

Figs. 4 and 5, an elevation and plan at the arrangement for sending the signals.

Figs. 6 and 7, details of the dish. 31 and its associated parts.

A. is an astronomical clock. the pendulum 1 of which beats seconds, in strictly accurate time. Upon this pendulum l a contact 2 is fixed, which at certain moments presses against a flexible arm 3. The time when the contact between the two members will he broken can be accurately adjusted by means of a screw 4t, said screw being supported in a bracket l secured to the clock casing. This Contact, owing to the flexibility of the arm 3 and to the small amplitude of movement of the contact 2, does not appreciably interfere with the free movement of the pendulum l.

An electrical circuit fed from a battery or the like 5,.a1ul passin to the terminals 6, has a short circuit patl through the contact 3, 2, and the pendulum 1. Consequently noapprcciable current will flow past the terminals 6 except when the contact 3, 2 is open. Therefore at each creaking of the contact between 3 and 2 the cur-refill will flow to the terminals 7 an adjustableresistance. 7 is used to avoid short-circuiting the source of current It is preferable to oflcratc by breaking rather than by closing a circuit, because of certainty of the immediate action duration and si'zrength of this method an of the current impulse resulting from it.

However, it evident that the use of the arrangement its opening; the circuit only represents one method of carrying out the in vcntion.

The pendulum 1 sends at each oscillaw tiou an impulse 01% current into the circuit, the commenccment of which is determined very accu. irely, and the duration 01" which is itself ulcted by the tinge of the contact 3, .The circuit closed through electromagz nets 8, and S" the clccl: B which is to be synchronized by the clock ii.

The pendulum. 9 carries at its lower end three armaturcs l l0 and ll? a anged in such manner. lha t each of these oscillations the pendm. 9 nay be rendered, stationary, during a ver short time by the simultaneous attraction of the h ins 8 and upon the two arma'turcs which are at that instant opp the )cctive cores. This use oi the two untgne "found to he practiw n C215. y is. but is not essential.

The ClOClz'33 operates a suitable circuit closer which may be of any capable of he accuracy required. The distributing very accurately formed cylinder 12 which c rries in the form of a spiral the relief gnals to be emitted. The drum may e en rayed but preferably the relief surface in the term' cylinder is preferahly chosen of such a diameter that the deformation due to expanciahle and above all to render moreappreciahle the small dillferences in diameter due periphery. The cylinder has two stub shafts 13 and i8 supporting at its ends in two standard Mi /T. carried by a slidable .base. The no members slide beappuratus (Figs. 4 and 5) consists or a r surraces controlling the s s of; progectiug'cam shapef su faces. lhc

sion by temperature changes is inappre to the hollows or to the projections on its and allowing t to rotate truly in bushin 's t tween two guides on the table 15 which intooth of the ratchet wheel 20, and is reached rotation of the shaft and the d oi. The starting of the on r e contact falling,- hack e :33, while the cam surface 33 s so desi e to prevent the contact 3% lOClIi the dis: except when the groove 33 i anderneath; consequently the y comes into circuit again after a i'EVUllltlUD of the dis: 31. Everyepends upon the fact that just after revolution of the disk 31 the fino'e 23lis moved out of its notch against he action of its mntrollingspring; Then he motor is automatically stopped ind the weight commences its action of oringing the apparatus to its original position. The motor acts on the shaft 16 through the worm 5 which is i i'ictionally engaged by the go sha t 16 th ough the clutch Blythe latter actuated by the magnet 23 through '1 supplied the magnet simultaneously 5 ly current of the motor.

' i such as 21, when the upped by the return of the cylin der to its original position, any jerks on disn; or of the motor drive are isoan and there is no need or wakes.

the time set a contact closed. Now

. as will he seen from Fig. 5'011 causes the operation of the electro-im 2-4. This releases the ratchet wheel 1). 'ihc signals are then sent until 315 the relay current is taken olt and the ratchet wheel again enqu res with the pawl on the re 'This is the whole operation necessary for the sending of the However. it obvious that ai'te a W n time the drum will come to the end oi its course and for this purpose a re-windinn' gement employed. Such ar 1' k illustrated with reference to Land T. ii'hcn the cylinder reaches 25 t oi its path that when it is com g run down, an electric motor is l t into play, while at the same time a r displacement oi" the cylinder to the :21; takes place. This allows of the r' irning the cylinder liach to its origii in, while the. pointer 26 is out of t the cam-sl1apcal surfaces.

"he starting of the electric motor the elertro-n'iagnet and disp Le carriage on which the cylinder 12 a me other parts are fixed, liodhy in a lonulinai direction, by this means bringing into operation the friction clutch 21 whereby brought into engagement with '2 the displacement being sulii- .eienl', to more the pointer 26 from the helipath of the cam-shaped surfaces into cess, between these surfaces. n the course the 34 see reaching the end of its 3% is operated by the arm -paratus is in a condition to repeat its oper- By a Fig. .10. This causes the arm 8% to he removed from the slot 33 and thereby the motor is stopped and current no longer passes through the electro-magnet The eil'ect of this is to allow the cylinder to come under the action of the gravity motor until the ratchet wheel 20 is rei ngaged. This slight movement enables the arm ill to ride slightly out of the groove 33. The cylinder is now in its original. position and the apation.

I declare that what I claim is 2- 1. An apparatus for transmitting signals at any desired moment by tclcgraphy, com- 30 prising in combination a clock, a contact adapted to be actuated by said clock at a predetermined instant, a cylinder adapted to rotate and having cam shaped surfaces which represent signals, a tracing; point in Contact with said cylinder and adapted to be actuated by said cam surfaces, said tracing point being; adapted to control the transmis sion of signals and electromagnetic means for holding the said cylinder adapted to re lease said cylinder when said contact of said clock isv actuated. I v

2. An apparatus for transmitting signals at any desired moment hy telegraphy, comprising in combination a clock, a contact adapted'to be actuated by said clock at a predetermined instant. a cylinder adapted to rotate and provided with cam shaped surfaces in a helicoidal path on said cylinder.

a tracing point in contact with said cylinder and adapted to be actuated by said cam surfaces, said tracing point being adapted to control the emission of signals electroinagnctic means for holding said cylinder adapted to release said cylinder when said contact of said clock isactuated, and means to provide alongitudinaldisplacement of said cylinder and said tracing-point relative to each other, in order that said tracing; point may follow said helicoidal path.

3. An apparatus iior transmitting signals at any desired moment by telegraphy, comprising in combination a clock, a contact adapted to be actuated by said clock at a prtaletermined instant, a cylinder adapted to rotate and having cam shaped surfaces which represent signals, a tracing: point in contact with said cylinde and adapted to be actuated by said cam surfaces. said tracing point heing adapted to control the transmission of A nails, a pawl and ratchet device adapted to uold said cylinder, and an electromagrnct adapted to release said device and allow the cylinder to rotate.

having cam shaped surfaces on a helicoidal path on its surface, a tracing point adapted to be actuated by said cam surfaces and to control the transmission of signals, a gravity motor causing said cylinder to rotate and to be given a longitudinal mot-ion, a contact adapted to be closed when said cylinder reaches the end of its path, a motor adapted to he set in motion when said contact is closed, an electromagnet adapted to bring vsai'd inotor into engagement with said cylinder-,J'Zx further contact adapted to be opened.

when said cylinder returns to its original pcsition and means to release said gravity motor.

13, An apparatus for transmitting signals at an3 desired moment by telegraplry, comprising in combination a clock, a contact adapted to be actuated by said clock, a cylinder having a series of cam-shaped surfaces, a tracing point adapted to be actuated by said cam-shaped surfaces and to control the transmission of signals, a ratchet adapted to hold said cylinder, and a pawl adapted to engage with said ratchet and to be released when said contact of said clock is actuated.

In witness whereof, I have hereunto signed my name this 26 day of February *1914, in the presence of two subscribing witnesses. r

- EDUUARD llllLlhl.

\Vitnesses:

Annex 1 N M ox 'rninnn'r, (Hus. l. llncssLY.

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