US644497A - Wireless telegraphy. - Google Patents

Description

No. 644,497. Patanted Feb. 27, I900. A. F. COLLINS.

WIRELESS TELEGRAPHY.

(Application filed Nov. 7, 1899.)

(No Model.)

THE cams versus 00. wormumm. WASHINGTON, o c.

ARCHIE FREDERICK COLLINS, OF SARATOGA SPRINGS, NEW YORK, SIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THEAMERIOAN- WIRELESS TELEPHONE AND TELEGRAPH COMPANY, OF ARIZONA TERRITORY.

WIRELESS TELEGRAPHY.

SPECIFICATION forming part of Letters Patent'No. 644,497, dated February 27, 1906.

Application filed November 7, 1899. Serial No. 736,198. (No model.)

To all whom it may concern:

Be it known that LAROHIE FREDERICK 00L- LINs,of Saratoga Springs,in the county of Saratoga and State of New York, have invented certain new and usefulImprovements in VVireless Telegraphy, of which the following is a specification.

My invention relates to certain improvements in wireless telephony and telegraphy, and more particularly to the coherer used in connection with the receiving apparatus, the same being so constructed and arranged that the resistance is materially lessened and'the local current of electricity is varied.

Myinvention further contemplates the use, in connection with the transmitter, of means whereby the etheric waves are concentrated and coincidently reflected in parallel lines to the receiver, thus preventing all possibility of the spreading or diffusion of said waves.

My invention consists of the novel features of construction and arrangement of parts, all of which will be hereinafter fully described, and particularly pointed out in the appended claims.

To more fully comprehend the nature of my invention and the manner in which the same is carried out, reference must be had to the accompanying drawings, forming part of this specification, wherein- Figure 1 represents a sectional elevation of a receiver and transmitter constructed according to my invention. Fig. 2 represents, on an enlarged scale, a longitudinal section of the coherer. Fig. 3 represents a transverse section thereof, taken on the line 3 3 of Fig. 2. Fig. 4 represents, on an enlarged scale, a front view of the wave-reflector used in connection with the transmitter; and Fig. 5 represents a central section thereof, taken on the line 5 5.

Similar reference-numerals indicate corresponding parts in all the figures of the drawings.

I will first proceed to describe the transmitting apparatus with especial reference to Figs. 1, 4, and f the drawings, which show the several parts of the apparatus in assembled position and the wave-reflector in detail.

3 and 4 designate, respectively, the primary and secondary wires, which are wound upon the magnet 5, said magnet being pro vided with a vibrator 5, and the primary wire 3 leads to and connects with the transmitter 3 and the battery 3 in the usual manner. The secondary wire 4 is grounded at 6, and its other terminal is carried to the desired elevation, where it is supported in any desired or approved manner.

6 designates an oscillator which is in air cuit with the secondary coil 4, and in close proximity to this oscillator is a wave-reflector 7, the latter being formed with a plurality of annular steps 8, whose diameters become gradually reduced as they reach the center portion 9.

I will now proceed to describe the receiving apparatus illustrated in Figs. 1, 2, and 3 of the drawings.

1O designates a tube, preferably of glass and of any desired diameter and length,into which are inserted two oppositely-disposed metal conductor-plugs 11, the latter being prefer ably made of brass and having their inner ends beveled or inclined, as shown, to provide a pocket or space 12 for the reception therein of metal filings or other granular metallic particles 13, which only partially fill said pocket 12. The inner beveled ends of the plugs 11 are connected together by means of a small German-silver strip 14 or other kindred metal of high electrical resistance, andthe plugs 11 and filings 13 are connected in circuit with a magnet 15, arranged above the pocket 12 and upon the outside of the tube 10.

16 designates a local battery in circuit with the plugs 11 and the magnet 15, so that when the etheric waves coming from the transmitter contact with the wire 15 and through it attack the metal particles in the coherer of the receiyer the resistance is materially lessened, being considerably aided by the small connecting-plate 14 between the plugs 11, thereby causing the magnet 15 to attract the filings or granular particles 13, which latter will by their own gravity fall back to their original places. A relay 17 is interposed between the coherer-magnet and the battery, as shown, from which relay a second circuit 19 is formed, which contains the receiver 20.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. A receiving apparatus for Wireless telegraphy, comprising a non-conductor tube, 0ppositely-disposed conductor-plugs arranged Within the tube, and having their inner ends beveled to form a tapering pocket, adapted to receive loose magnetic particles, a local circuit embracing said plugs, and filings, and a magnet in said circuit arranged to act on said particles, substantially as and for the purpose set forth.

2. A receiving apparatus for Wireless teleg-

Images