US287742A

US287742A - waite

Info

Publication number: US287742A
Authority: US
Publication date: 1883-10-30
Anticipated expiration: 1900-10-30

Description

H T I A W E H (No Model.)

' TELEPHONE RECEIVER.

ism? WITNESSES UNITED STATES PATENT: OFFICE.

HENRY E. WAITE, OF NEW YORK, N. Y., ASSIGNOR TO THE MoLEcpLAR TELEPHONE COMPANY, OF SAME PLACE.

TELEPHONE-RECEIVER.

SPECIFICATION forming part of Letters Patent --No 287,742, dated October 30, 1883,

' Application filed Angust3',1883. (No model.)

To all whom it may concern making part of this specification.

This invention relates to the reproduction of sounds or combinations of sounds through the agency of undulatory currents of electri city, whereby articulate speech can be transmitted over atelegraph-line.

One form of my instrument is made in the following manner: On one end of a straightbar permanent magnet is placeda helix, the covered wire wound thereon being in the mainline current. This magnet is secured in a tube of wood, ebonite, or other non-conducting material, this tube being at one end enlarged into a cup inclosing the helix. Upon the rim of this cup is secured, by means of the usual ear-piece, a tympan of wood, ebonite, card-board, glass, brass, cork, or of any equivalent material not subject to the action of mag netism.- A thin or thick bar of steel or iron, or of other material capableof being acted on by magnetism, is secured at one end to the inside of the cup, forming an arch over the core of the helix, close tothe end of the magnet, within the magnetic field; or it may be held loosely by means of a screw through a slot in each end of the bar, so that the bar, when attracted by the magnet, may glide easily. A short spur projects from the strip of iron directly over the center of the core of the helix, against which spur the tympan is held by the ear-piece.

In the accompanying'drawing, which represents the preferred form or construction, A represents the inclosing tube or handle; A, the enlarged chambered end or cap inclosing the coil, and to which the tympan and earpiece are secured in any usual or preferred manner; I), the bar-magnet; c, the coil placed on the end of the magnet, within the chambered end; d, the tympan, and c the arching bar,of steel or its equivalent magnetic material, referred to, provided with the spur e,

resting in contact with the tympan d, as exu V has its other end supported upon the ledge on the opposite side, but not fastened thereto, thus leaving it free to slide on the ledge, to accommodate any vibration in the bar 6, due to disturbances in degree of polarity in the magnet, said bar being arranged in inductive proximity to said magnet, and in the form of a spring arching over its end, as shown. I

I do not confine myself tothe use of permanent magnets. Electromagnets may also be used.

By this construction of an instrument for reproducing articulate speech, the disagreeable metallic nasal sound always resulting from the use of a disk of iron in a telephone, as also K the frequent buzzing, are avoided, the articu any convenient manner upon a short spur placed on the middle of the iron bar, immediately over the center of the magnet, substantially as described.

In testimony whereof Ihave hereunto set my hand this 2d day of August, A. D. 188.3;

HENRY E. WAIT-E;