US1012496A - Wireless receiving electric system. - Google Patents

Description

G. WIRTH. WIRELESS RECEIVING ELECTRIC SYSTEM.

1 I APPLICATION FILED DEC. 20, 1910. 1,01 2,496.

Patented Dec. 19,1911.

UNITED STATES PATENT OFFICE.

"CHRISTOPH WIRTH, OF NUREMBERG, GERMANY.

WIRELESS RECEIVING ELECTRIC SYSTEM.

Specification of Letters Patent. Patented Dec, 19, 191-1,

Application filed December 26, 1910. Serial No. 598,414. 7

To. all whom it may concern:

. Be it known that I, 'CHRISTOPH VVIRT I a citizen of the Empire of Germany, residtuned.

ing electric system comprising a receiving tail parts.

ing at Nuremberg, in the Empire of Germany, have invented a new and useful Wiredisturbances by foreign electrical impulses of, the same kind for which it has been The improvements consist in regulating devices in the receiving circuit and in a mechanism for varying the said regulating devices, so that the responsive capacity of the receiving circuitcan be at will varied.

I will now proceed to describe my invention with reference to the accompanying drawing, in 'which Figure 1 1s a diagram of a wlreless receivcircuit with regulating devices, circuits controlled by the receiving circuits, a di'stribw .ter, and a mechanism for varying the regulating devices, only parts of the operating circuits under the control of the distributer being shown, Fig. 2 is a view of apart of the mechanism for varying the regulating devices, Fig. 3 is a cross section through the line A'B in Fig. 1. Fig. 4 is-a cross section through the line G-D in Fig. 1, and Fig. iris-atop plan view ofcertain de- Similar characters ofreference refer to similar parts throughout the several views.

The antenna of the receiving circuit is shown to consist of an aerial conductor 42,

Fig. 1, the primary coil P of atransformer T and an inductance-coil 68. The secondary coil S of the transformer T is by lines 2 and 4 connected in multiple to the coherer or wave-responsive device 38 and the 'two lines 2 and 4 are respectively connected by lines 7 and 11, also a contact spring 12, with the terminals of a condenser 73. Another condenser 74 is connected to the'line'11 and the lower terminal oft-he coherer 38 The induction toil of the condenser 73 is mounted on a shaft 16 turning,in-su-itable bear mgs not shotvn and is electrically connected wit-ha metallic .disk 15, against which the contact spring 12 bears. Both th'is induc t1on coil and the disk 15 are insulatedifrmn the shaft 16. A ratchet wheel 58 3) with four teeth is fastened on the right. end

of the shaft 16 inFig. 1 and carries a disk consisting of a cross 65 (Fig. 4) of insulating material with four metallic sectors 66, 66, which latter are also insulated from the ratchet wheel 58 in any known manner.

Four disks 67,, 67 are fastened on theshaft 16 and are insulated therefrom, 'while they are separately connected with the four sectors 66, 66. A contact spring 69 (Figs. 1

and 4) bearing against the periphery of the disk 65, 66, 66 is'by a line 18 connected with an'earth-pla'te E. Four contact springs 19, 19 hearing against the disks-67, 67 are separately connected by lines 23, 24, 25, 26 with different points 27, 28, 29, 30 respectively on the inductance-coil 68. In a manner to be described later the ratchet wheel'58 and "thereby the shaft 16 with the four disks 67,

67 and the induction coil of the condenser 73 can be brought into four different posi- 'tions set at an angle of 90 from one another. The condenser 73 is in any known manner so constructed as to alter its. capacity in accordance with the said'four posi tions of the ratchet wheel'58.- The other condenser 74 may have a-constant capacity.-

It will be now understood, that, for the four different positions of the ratchet wheel 58 the antenna will, be diflerently tuned.

The coherer 38 is'inserted in a circuit" 31,

which comprises a source of'energy 32' and the coil of an electromagnet 39. The armatrue 36 of the electromagnet 39' is disposed on the left arm of a two-armed lever-33 and is insulated therefrom. The right arm of this lever 33 serves as, a switch, which can close and open a circuit 34, that includes a source of energy 13'and the coil of an electromagnet 14. Shunted to-the circuit 34 is a .device 35 of any known construction for actuating the hammer 37' of the coherer 38. The armature ofthe electromagnet 14'is attached to the left short arm 9 of a two-' armed lever 8, 9 and is insulated therefrom. The'right Ion arm 80f this lever carries a pawl 10 (indicated by dotted lines in Fig.

1), which engages a ratchet wheel 100 that is not shown as it is covered by a pinion 85. A spring 8 serves for pressing the long arm 8 downward, so as to detach the armature from the electromagnet 14. A shaft 6 is mounted in two parallel stationary disks 1 to turn and has fastened on it the said ratchet wheel,.the pinion 85 and a crank 5. Six studs 40,- 40 are assumed to be disposed on the stationary front disk 1 alon its periphery and are electrically insu ated therefrom. Each stud 40 carries a contact spring 3 against which the crank 5 can strike. Each stud 40 is moreover connected with a line 41 forming one terminal of an operating circuit. Six other studs .76 (of which only three are shown in Fig. 1) are disposed on'the stationary front disk 1 and are each connected with a line 77 forming the other terminal of the respective. operating circuit. The six studs 76 only one of which is shown in Fig. 5 are connected with contact springs behind the front disk, 1, which contact springs bear against the circumference of a disk of insulating material fastened on the shaft 6 and containing a radial metallic sector, that can come in contact with only one of the six contact springs at atime. For the sake of simplicity but one stud 40 and one'stud 76 are shown in Fig. 5. It will be now understood, that as the ratchet wheel behind the pinion 85 has twelve teeth, it will be fed one tooth forward each time that the electromagnet 14 is energized, so that the crank 5 will close or open any of the six operating circuits, in otherwords it serves as a distributer.

A lever 45 is mountedon a stationary pin 44 to rock'and carries at its upper free end a pin 78, on which a gear wheel 43 is mourted to turn. The gear wheel 43 can mesh with the pinion 85 and is elastically connected with the lever 45 by a spiral spring 46 surrounding the pin 78. The lever 45 is pressed to the left in Fig. 1 by a helical. spring 46 secured to some stationary point, so that the gear wheel 43 normally engages the pinion 85. The lever 45 carries the armature 79 of an electromagnet 64, the coil of which is inserted in the circuit 61, 62 of a sourceof energy 63. The line 61 terminates in a stud 80 on which a contact spring 59 is fastened. l The other line 62 terminates in a stud 81' on which a contact spring In' l1ne with the shaft 16 another shaft 86 is mounted in suitable bearings (not shown) 60", 60", being connected with'the to turn and is adapted to be turned by a clockwork 54 of any known construction.

It carries at the left end a crank 56 (Fig. 3)

which is coupled with another shaft 53,

is adapted to wind up the spring of the clockwork 54. The two terminals of the electromotor 51 are connected with lines 87 and 88, in one of which a source of energy 50 is inserted. The line 87 is connected with a stud 89, on which a contact sprin 48 is fastened, and in a similar manner the ine 88 is connected with a stud 90, on which a contact spring 49 is fastened. The'two contact springs 48 and 49 form a cut-out for the circuit of the electromotor 51. A bent .contact piece 47 (which may be replaced by a pin) fastened on the gear wheel 43 and insulated therefrom is adapted to strike the contact spring 49 and to press it against the other contact spring 48, whereby the circuit is closed so that the electromotor 51 can start.

'The crank 56menti6ned above carries a bent projection 91, which is'adapted to press the upper contact spring 59 on the lowercontact spring 60 and thus to close the circuit 61, 62,-,so that the electromagnet 64 will";

beienergi'zed for attracting its armature 79,

whereby the gear wheel 43 is moved out of engagement with the pinion 85. The projection 91 is made to normally press against a contact spring 92 serving as a switch, whereby the circuit 71 of an optic signaling device 93 (an incandescent electric lamp for instance) and including a source of energy 72 is normally opened.

' In addition tothe contact springs'f59, 60 as many contact springs 59, 60, 59", 60

. are inserted in the circuit of the elec- 11o tromagnet 64, as there are operating circuits I 41, 77 to be controlled by the. distributer 5. In Fig. 1 only" two of these additional contact springs are shown for want of space, the studs 80, 80",

the line 61 by' branches 82, 82 and the studs 81, 81", carrying the contact springs line 62 by branches 83, 83",

Each operating circuit 41, 77 includes the coils of an electromotor 17 (Fig. 2), the armature shaft of which is adapted to wind up the spring of a clockwork 84 of any known construction, either directly .or by 125 means of a shaft 94,. as the case may be. On some projecting shaft 95 of the clockwork' 84 a two-armed lever 22, '75 is fastened, one arm 75 of which is adapted to press one part of the corresponding contact 130 in a direction 7 carrying the contact springs 59, 59", being connected with 16 ned.; Thearmature-shaftsof the several 7 e ectromotors' ,17serve for operatingin ads dition to the clockworksv84 various known devices,- machines, apparatus, or the-like v. (not shown)', w hich can'be set to work. and 16 be Stopped by'the 'di'stributer 5. EIngeneral the several 0 crating circuits by reason of v the construction of the respective devices, machines, apparatus, etc., require a certain time before the respective effect is obtained 20 or produced, although this timemay be very 1 short and may comprise only afew seconds,

afact which is to be bornein mind for the following explanations. 7 The wlreless receiving electric system described operates as follows: It is in any known manner so tuned as to be responsive to the waves transmitted atany moment from the sending station, for example the disk 65, 66, 66'on the ratchet wheel 58 may occupy such a positionas to connect the point 30 on the inductance-coil 68 by the line 26 with the earth-plate E. Then each time that in response to the electrical impulses transmitted from the sender the coherer 38 becomes conductive, it will close the primary circuit, that is the circuit 31 of the electromagnet 39, so that the latter will be energized for attracting its armature 36. Thereby' the secondary circuit, that is the circuit 34 of the electromagnet 14, will be closed for simultaneously energizing the electromagnet 14 and the device 35. In consequence of this the electromagnet 14 will attract its armature. and turn the long arm 8 with the pawl 10 upward; Immediately afterward ,it .will become without current and will release its armature, so that the long arm 8 is again pressedby its spring downward, whereby the ratchet wheel will.

59 be fed one tooth forward, so that the crank or distributor 5 may strike any contact spring 3 and bend it, whereby the respective operating circuit 41, 77 is closed, or the crank 5' may release any contact spring 3 and engage in the space between 'it. and the next following contact spring 3, whereby the said operating circuit 41, 77 is again opened. Meanwhile the device 35 will have actuated the hammer 37 for restoring the normal state of the coherer 38. Evidently in Fig. '1 the crank 5 requires to be turned in the direction of the hands of a watch, so

that the gear wheel 43 will be turned in the opposite: direction, whereby the 8 spring 46 'is strained. Each time that-any ggy gm -traction of the armature 79 the lever 45 will spiral operating circuit 41, 77 is closed byfthe flis devicespmachines, apparatus, etc. moment that the electromotor 17 starts, it will also wind up the spring of the clockwork and; thearm 22 will release the'contact spring '97 whereby the circuit 98 of the optic signaling device '70. will be closed. The clockwork 84 is so adjusted-thatthe arm can strike and press the upper-con tact spring 59 on the lowercontact spring 60 at, the moment that the respective effect to be produced by the operating circuit 41', 77 has-been obtained or produced and .the

, 86. electromotor 17 ceases workingj Then. by a the contact springs 59, 60 the circuit of the electromagnet 64 will be closedfor energizing the latter. In consequence of the atbe turned to the right whileovercoming the strain of the helical spring 46, so that the gear wheel 43 will come out of engagement with the pinion 85, whereupon it will be returned to its initial-position shown by the strained spiral spring 46". The spring of the clockwork 84 will turn the arm 22back to its initial position, so that it will depress the contact spring 97 and thereby open the circuit 98 of the optic signaling device-70, which then becomes inoperative. The signals conveyed by the various optic devices 70 to the sending station will keep the operator posted about the state of things at the receiving station. Evidently the distribu- 100 ter 5 is turned through the same small angle corresponding to the pitch of the ratchet 7 wheel behind the pinion 85 each time that .the coherer '38 responds to the electrical waves transmitted, so. that it will close and open the several operating circuits one 'after the other. ,As, however, the effects to be produced by the several operating circuits'41, 7 7'can not be at once produced or obtained, but after a determined number of units of-time (seconds for example), it is possible to select any of the several operating circuits by causing the distributor 5 to step rapidly before it strikes and depresses I the'right contact spring 3. It is also obvious, that the gear wheel 43 which meshes with the pinion 85 will be turned through a small distance, 'each time thatthe distributer 5 which is on the same shaft as the pinion 85 is moved one step forward, so 2 that the distributor 5 may complete one revolution or more before the contact piece 47 on the gear wheel 43 can strike'and press the lower contact spring 49 against the j upper contact spring 48 for closing the circuit of the electromotor '51. As after the completion of one revolution of thedistributer .5 the gear wheel 43 will in' any case have returned to its initial position without coming in contact with the contact 0 spring 49, the receiving electric system will remain in the same position for respondin to the electrical impulses of the same kin so that any of the operating circuits can be opened and closed over distance from the sender.

.When by chance electrical impulses-of the same kind from some source'other than the sender should meet -fthe aerial conductor 42,,of course they would produce the same effects as dwcribed above. Then the optic signals conveyed by the several devices would inform the operator atthesending station of this fact. In case of war things would be very dangerous if for example abattle-ship of the enemy could send out impulses of the same kind and produce irregularities. If for example the Ireceiving electric system were disposed on a torpedo-like vessel and one operatingcircuit were to control a certain speed or an alteration of the direction of the vessel, and if an electrical impulse had been transmitted from the sender for causing the distributor 5 to strike and depress the con-- tact spring 8 belonging to the said operating circuit it would take erhaps two seconds before the desired e ect is produced. If now within these two seconds the enemy transmits an impulse of the same kind, the distributor 5 would be thereby caused to leave the contact spring 3, so that the eii'ect intended by the operator could not be produced. As the optic device 70 fails to sigml, the operator would perceive that some disturbance by the enemy had taken place and he would endeavor by rapidly transmitting a certain number of impulses to turn the distributer 5 again into the right position for the desired effect. If the enemy again sends out electrical impulses and the same occurrence were repeated, the desired effect might be further delayed. It would even be prevented from being at all produced, if the contact piece 47 were not disposed on the gear wheel 43. With the aid of the contact piece 47, however, all further endeavors of the enemy will be frustrated in the following manner: As soon as owing to the continued turning of the distributor 5 the contact piece 47 strikes and presses the lower contact spring 49' against the upper contact spring 48, the circuit 87, 88 of the electromotor 51 will be closed, so that this motor starts and in the manner described above turns the crank 56 with the pawl 55 from the position shown in full lines in Fig. 3 to the other position indicated by dotted lines. Thereby also the shaft 16 with the four disks 67, 67 and the induction coil of the condenser 73 will be turned through the same angle, so that not only another length of the inductance-cil 68 will be inserted, but also the capacity of the condenser 73 will be altered and consequently the aerial conductor 42 will be tuned fig electrical impulses of another kind. At e same time the projection 92 of the cra-n 56 will have struck and de pressed the contact spring 59 for closingral spring 46. As the electromagnet 64 again becomes without, current, the. helical spring .46. will return the "lever 45 to its normal position andv thus put the gear wheel 43 into engagement with the pinion 85, and thespringof the clockwork 54 will ,return the crank 56 to its initial position,

whereby the optic device 93 becomes moperative. Then the operator will be enabled to henceforward operate the torpedo-like vessel as he may desire, without being disturbed bythe enemy.

The wireless receiving electric system may be varied in many respects without departing from the spirit of my invention.

The regulating devices 73, 74, 68 and the transformer T may be replaced by their equivalents. I

From the diagram of Fi 1 of the drawings it will be observed t at a connection of the contacts 40 and 76 with the contacts 59 60, etc., of the ma net 64, does not take place. These serieso contacts 59-60, 59 60 ,,5960, etc., belong to the circuits of the motors 17 associated therewith, it being understood that there will be one of the motors 17 for each set of contacts 59 -60", 59 60", etc., and in this connection it will be further seen that butone contact 76 is provided with which the contact lever 5 is always electrically connected. The circuit .wire 77, which is connected to the contact 76, includes a source of energy w and successively has a connection Wlth one terminal of the several motors 17, and the other terminal of each. of said motors 17 has a wire connection 41 with one of the .contact points 40, all of which plainly appears in the diagrammatic view. It may be further observed that the single signal lamps 70 ;will momentarily be llghted as the lever 5 passes. This is not a disadvantage in the operation of the apparatus but, on the contrary, an advantage because the motion of the said lever is incidentally and constantly controlled thereby.

I claim:

1. In a wireless receiving electric system of the kind described, the combination with a receiving circuit, of regulating devices in said receiving circuit, circuits controlled by the receiving circuit, a distributer controlled by said circuits controlled by the receiving circuit, operating circuits adapted to be closed and opened one after the other by said distributor, and a mechanism under the control of said operating circuits for varying said regulating devices, so that the responsive capacity of said receiving circuit.

trolled by sai circuits controlled b the receiving circuit, operating circuits a apted to be closed and opened one after the other by said distributer, a mechanism under the control of said operatin circuits for varying said regulating devlces, so that the re-' sponsive capacity of said receiving circuit with said mechanism, optic signaling devices, and subsidiary circuits includm said optic signaling devices, said clockwor s be- 20 ing severally adaptedto be woundup and to close the corresponding subsidiary circuit on the corresponding operating circuit being closed and to return to its normal condition and to open the subsidiary circuit on the 2 operatingcircuit' being again opened;

3. In a wireless receiving electric system,

, the combination with a receiving conductor,

of regulating devices" in' said receiving conductor, circuits controlled by said receiving conductor, a distributer'com'prising aplurality of insulated contact springs along its periphery, a revoluble insulated shaft with a ratchet wheel and a contact crank adapted to strike the contact springs one after the other, means operated by said circuits controlled by the receiving conductor for intermittently feedingthe ratchet wheel of said distributer, electromotors, operating circuits connecting said electromotors with the con- 4 tact springs and thefcrank of said" distribut e r, a pinion on the shaft of said distributer,

an electromagnet, a lever carrying a pin and the armature of said electromagnet, a gear 4 wheel turnable on the pin of said lever, a spring for returning said 'ear wheel into an initial position, a s ring For normally mov 7 ing said lever ofl' om said electromagnet and pressing said gear wheel into engagement with said pinlon, a controlling clrcuit including said electromagnet, contact springs 1 m saidcontrolling circuit, clockworks adapted to be severally wound 'up by said electro motors and to close 'said contact springs on the corresponding operating circuit being again opened, so that said electromagnetis energized for moving by said leversaid ge r wheel out of engagement with said pinion,

' anoperating shaft, means operated by said operating shaft for varying the regulating l0 devices,'a regulating c1rcu1t comprising a contact spring, means, operated by said regulating circuit for intermittently turning said operating shaft and at last closing one of the last mentioned contact s rings and a 36 part on said gear wheel adapte to close the operating shaft is set to York-for varying can be at w1ll varied, clockworks connected contact spring of said regulating circuit, so that on the angle of rotation of said gear wheel exceeding a predetermined limit said said regulating devices. d "ID 4. In a wireless receiving electric s stem,v the combination with a receiving con uctor, of regulating devices in said receiving conductor, a receiving circuit connected, with said receiving conductor and comprising a coherer and a relay, a primary circuit controlled by the relay of said receiving circuit and comprising a relay, a tapping device for.

the coherer of said receiving circuit shunted to said primary circuit a distributer comso prising a plurality of insulated contact springs along its periphery, a revoluble insu-v lated shaft with a ratchet wheel and a, con tact crank adapted to strike the contact springs one after the other, means operated as by the relay of said primary circuit for intermittently feeding the ratchet wheel of said distributer, electromotors, operatin circuits connecting said electromotors wit the contact springs and the crank of said so distributer, a pinion on the shaft-bf said distributer, an electromagnet, a lever carrying 'a pin and the armature of said electromagnet, a gear wheel turnable on the pin of said lever, a spring for returning said gear wheel into an initial posltion, a s ring for normally moving said'lever ofl' rom said electromagnet and pressing said gear wheel into engagement with said pinion, a sec- 7 ondary circuit including said electromagnet, contact springs in said secondary circuit, clockworks adapted to be severally woundup'by said electromotors and to close said contact springs on the corresponding oper-'- ating circuit being again opened, so that said electromagnet is energized for moving by said lever said gear wheel out of engagement with said pinion, an operatingshaft, means operated by said operating shaft for varying said regulating devices, a third circuit comprising a contact spring, means operated by said third circuitr forintermittently turning said operating shaft and at last closing one of said contact springs, andapart on said gear wheel adapted to close the contact spring of the third circuit, so that on the angle of rotation of said gear wheel exceeding a predetermined limit said operating shaft is set to work for varying said regulating devices.

'5. In a wireless receiving electric s stem, the combination with a receiving con uctor,

of regulating devices in said receiving conductor, circuits controlled by said receiving conductor, a distributer comprising aplurality of insulated cont-act springs along its periphery, a revoluble insulated shaftwith a ratchet wheel and a contact crank adapted to strike the contact springs one afterthe other, means operated by said circuits for 130 intermittently feeding; the ratchet wheel of said distributer, electromotors, operating c rcuits connecting said electromotors with the contact springs and the-crank of sa d d s-' tributer, a pinionon the shaft of said distributer, an electromagnet, a lever carrying a pin and the armature of said electromag- 1 contact springs and the crank of said diswheel into an initial a gear wheel turnable on the pin of for returning said gear osition, a 5 ring for (l lever ofi' romsaid said gear wheel net, said lever, a spring normallymoving sai electromagnet and pressing into enga ement with said trolling circuit including said electromagnet, contact springs in said controlling c rcuit, optic signaling devices, subsidiary 'C11- cuits includin said optic signaling devices, clockworks a apted to be severally wound up by said electromotors and to first close inion, a conand'at last open the corresponding sub'sidiary circuit and to magnet is ener ized for moving by said lever said gear whee out of engagement with said inion, an operating shaft, means operated y said operating shift for varying said regulating devices, a regulating circuit comprising a contact spring, means -operated by said regulating circuit for intermittently turning said operating shaft and at'last closating circuit, so that on the angle of rotation of said gear wheel exceeding a predetermined limit said operatin shaft is set to work for varying said regu ating devices.

6. In a wireless receiving electric s stem,

the combination with a receiving con uctor,

of regulating devices-in said receiving conductor, circuitscontrolled by said receiving conductor, a distributer; comprising a plurality of insulated contact springs along its periphery, a 'revoluble insulated shaft with a ratchet wheel and a contact cronkadapted one of the contact springs, and a part on said gear wheelada ted to close the contact spring of said regul close at last the correspondmg contact spring, so that said electroto strike the contact springsone after the other, means 0 erated by said circuits for intermittently ceding the ratchet wheel of said distributer, electromotors, operating circuits connecting said electromotors with the tributer, a; pinion on the shaft of said distributer, an electromagnet, a lever carrying of said lever, a spring wound .up b

electromotors and to first close and at. last opn the corres onding subsidiar circuit and to closeat a st the corresponding contact spring, ,so that said electromagnet is energized for moving by said lever said gear wheelout of engagement with said pinion, an alarming circuit comprising an optic signaling device, an operating shaft, means operated by said operating shaft for-varying said regulating devices while first closing and at last opening said alarming circuit, a regulating circuit comprising a contact spring, means operated y said regulating circuit for intermittently turning said operating shaft and at last closing one of the contact sprin s, and a part on said gear wheel adapted to c ose the contact spring of said regulating circuit, so that on the angle of. rotation of said gear wheel exceedin a prede tel-mined, limit said operating sha t is set to work for varying said re lating devices.

7. In a wireless receiving electric system,

the combination with a receiving conductor,

of regulating devices in said receiving conductor, a receiving circuit connected with said receiving conductor and comprising a coherer and a relay, a primary circuit controlled by the relay of said receiving circuit and comprising a relay, a tapping device for the coherer of said receiving circuit shunted to said primary circuit, a distributer comprising a plurality of insulated contact springs along its periphery, a revoluble insulated shaft with a ratchet wheel and a contact crank adaptedto strike the contact springs one after the other, means operated by the relay of said primary circuit for intermittently feedin the ratchet wheel of said distributer, e ectromotors, operating circuits connecting said electromotors with 'the contact springs and the crank of said distributor, a pinion on the shaft of said distributer, an electromagnet, a lever carry-' ing a pin and the armature of said electromagnet, a gear wheel turnable on the pin for returning said gear wheel into an initial position, a spring -for normally moving said lever-ofi from said electromagnet and pressing said gear wheel into engagement with said pinion, a secondary circuit including said electromagnet, contact springs in said secondary circuit, optic signalin circuits including sai optic signaling devices, clockworks ada ted to be severally said e ectromotors and to first close an at last open the corresponding subsidiary circuit and to close at lastthe corresponding contact spring, so that said electromagnet is energized for moving by said lever .said gear wheel out of engagement with saidpinion, an operating shaft, means operated by said operating shaft for varying said regulating devices, subsidiary devices, a third circuit comprising a contact I cult for intermittently turning said operating shaft and at last closing one of the contact springs, and a part on said gear wheel adapted to close the contact'spring of said third circuit,s that on the angle of rota- .tion of said gear wheel'exceeding a predetermined limit said oferating shaft is set to work for-varying sai wheel'of said distributor,electromotors, op-

' electroma regulating devices. 8. In a wireless receivlng electric system,

the combination with a receiving conductor,

of regulating devices in said receiving conductolya receiving circuit connected with said receiving conductorand comprising a coherer and a relay, a primary c1rcu1t controlled by the relay of said receivmgvcir wit and comprising a relay, atapping device for the coherer of said receiving circuit shunted to said primary circuit, a dis: tributer comprising a plurality of insulated contactsprings-along 1ts periphery, a revoluble insulated shaft with a ratchet wheel and a contact crank adapted to strike the contact springs one after the other, means operated by the relay of said primary circuitfor intermittently feeding the ratchet erating circuits connecting said electromotors w th the contact springs and the crank of saiddistributer, a pinion on the shaft of said distributer, an electromagnet, a lever carrymg' a.p1n and the armature of said e et, a gear wheel turnableon the pm of mi lever, a spring for returning saidv gear wheel into an imtial position, a spring a for normally moving said lever off from i said electromagnet and 'press' said gear wheel into engagementwithsald pinion, a

-secondary circuit including said electromagnet, contact springs in said secondary circuit, optic signaling devices, subsidiarycircuits including said optic signaling devices, clockworks adapted to ,be severally wound up by said' electromotors and to first close and at last open the corresponding subsidiary circuit and .to close .at last the corresponding contact spring, so that said electromagnet' is energized for moving by said lever said gear wheel out of engagement with said pinion, an alarming circuit comprising an optic signaling device, an operating shaft, means operated by( said operating shaft for varying said regulating devices while first closing and at last opening said alarming circuit, a third circuit comprising a contactspring, means operated by said th rd circuit for intermittentlyturnone of the contact springs, and a part on said gear wheel adapted .to close the contact spring of saidthird circuit, so that on the angle of rotation of said gear wheel exceeding a predetermined limit said 0 rating shaft 1s set to work for varymg sald regulating devices. I I CHRISTOPH WIRTH. Witnesses:-

HANS Sononniz, RALPH W; Dox

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