US886983A - Coherer and decoherer. - Google Patents

Description

JOSEPH L. JONES, or KIZEB, TENNESSEE.

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Specificationiof Letters Patent.

- Patented May 6, 1.908.

Application filed December 26, 1906. Serial No.'349,475.

To all whom it may concern:

Be it known that I, JOSEPH L. JONES, a-

citizen of the United States, residing at Kizer, in the county of Blount and State of 5 Tennessee, have invented a new and useful Coherer and Decoherer, of which. the folldwin is a specification.

his invention relates to coherers and decoherers for use in connection with wireless telegraphy and signaling systems, and has for its prlncipal object to provide a coherer that is mounted for free movement, so that when agitated the particles of metal in the coherer tube will be loosened.

A further object of the invention is to provide a device of this class in which the deco-' hering operation is accomplished by shaking the coherer instead of agitating the same by tappers as usual.

A still further object of the invention is to provide a device of this class in which the co- 18161 is carried directly by the decohering mechanism.

A still further object of the invention is to provide a device of this class in which the decoherer is in the form of an armature or armature lever arranged within the field of force of an electro-magnet, and is provided With'means for supporting the coherer tube.

With these and other objects in view, as will more fully hereinafter a p'ear, the invention'consists in certain nove features of construction'and arrangement of parts, hereinafter fully described, illustrated in the accomanyi draw' s, and articularly pointed ut in he appfide'd claims, it being understood that various changes in the form, proportions, size and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

' .In the accompanying drawings z-Figure 1 is a perspective view of a coherer and decoherer constructed in accordance with the invention. Fig. 2 is a side elevation of the same,

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures of the drawings.

In carr ing out the invention, a standard 10 forme of metal or other, suitable material .is mounted on a suitable base 11, of woodor other insulating material. The up er end of the standard 1s, bent. over and ownward forming an arm 12 to which is attached a small spring strip 15, and to the lowerend of this spring is rigidly secured an armature 16. The armature is arranged immediately in front of a pair of electro-magnets 17, and is provided with a suitable make and break device for vibrating the coherer tube 19. The

make and break device preferably consists of a spring contact member 13 one end of which is secured to the armature 17 while the opposite end thereof is adapted to. engage a stationary contact 14 and thus make and break the circuit when the electro magnets are energized, the spring 15 serving to hold the contacts 13 and 14 normally in engagement with each other, as shown.

The lower end of the armature is curved to form a hook 18 for the reception of the coherer tube 19, said tube being formed, as usual, of glass and containing metal filings. At the opposite ends of the tube are arranged small metal blocks 20 which are connected by loose wires 21 to binding posts 22 and 23, respectively, that are carried by the base 11, one of the binding posts being arranged for connection to the aerial conductor, and the other being grounded. The glass tube is' filings are shaken up and the current broken or interrupted, it being of course understood that a switch or similar device will be included in the battery circuit for controlling the same. a pair of binding posts 27 for connection to the decoherer battery, although the connections with the decoherer magnets may, of course, be made in an suitable manner.

The 0 eration of t ecoherer proper is in the usua manner, the flow of current from the aerial conductor causing the particles of metal in'the coherer to cl together for the purpose of closing a local circu t, and as the current is made andbroken in the usual manner through the electro magnets of the decoherer, the armature will be attracted and re: leased, and the coherer tube will be shaken or agitated forthe purpose of causing the The base is further provided with partlcles of metal to separate and thus prevent the passage of the current. The .wires 21 are, of course, mounted loosely, so that they will not in any manner interfere with the vibratory niovenient of the coherer.

The device is of simple and inexpensive construction and may be readily installed in existing systems of wireless telegru-phy.

I clannz-- 1, A decoherer electro-magnet, an armsture arranged within the iicld of force of the magnet and having a hooked end, a make and break device, and a coherer supported by the hook.

2. In combination, a base, a standard carried thereby, an armature, a spring connecting the armature to the standard, the lower portion of said armature being turned to form a hook, an electrounagnet supported by the standard, a coherer tube, binding posts arranged on the base, loose wires connecting the binding posts to the ends of the coherer, an insulating tube surrounding the coherer tube and provided with a notch, and a securingscrew extending through the notch and across the hooked portion of the armature.

In testimony that I claim the foregoing as my own, I havehereto al'lixed my signature in the presence of two witnesses.

JOSEPH L. JON IS.

\'Vitnesses:

J. H. BRr NT, J12, .B. H. BORING.

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