US367004A - Geoege a - Google Patents

Description

2 Sheets-Shet 1.

(No Model.)

, G. A. HUEWE.

BAR PIECE FOR TELEPHONES. No. 367,004. Patented July 19, 1887..

N PETERS. Pmwuthu aphar, Wa'lhinihm, DJ:-

2 Sheets--Sheet 2.

(No Model.)

G. 'A. HUEWE.

EAR PIECE FOR TELEPHONES.

Patelited July 19, 1887.

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yd' ufi N, PETERS. Pnawunw n m. lnhinglom n c UNITE STATES PATENT OFFICE.

GEORGE A. HUEVVE, OF CINCINNATI, OHIO, ASSIGNOR TO THOMAS C. BRAD- FORD, OF SAME PLACE. 7

EAR-PIECE FOR TELEPHONES.

I SPECIFICATION forming part of Letters Patent No. 367,004, dated July 19, 1887.

Application filed January 15, 1887. Serial No. 394,413. (No model.)

To aZZ whom it may concern.-

Be it known that I, GEORGE A. Hunwn, a resident of the city of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Ear- Pieces or Attachments for Telephones, of which the following is a specification.

The object of my invention is to provide an ear-piece of novel construction for ready attachment to the ordinary telephone-receiver, and which shall form a comfortable cushion against the head, and at the same time completely surround the ear and cut off external sounds.

. The various features of my invention and the advantages arising from their use conjointly or otherwise will be apparent from the following description.

In the accompanying drawings, Figure 1 is a view in perspective of my ear-piece or attachment and a telephone-receiver, the attachment being applied to the receiver. Fig. 2is aside elevation of the attachment apart fromthe receiver and provided with a stiffening-ring. Fig. 3 is a view of the forward or receiving end of the receiver and the ear-piece or attachment applied thereto, the attachment and that portion of the receiver to which the attachment is applied being shown in section, the section being a longitudinal central one, the remainder of the receiver being in elevation. Fig. 4 is a central section of the at-- tachment from front to rear, the section being taken at the line zr .r of Fig. 2. Fig. 5 is a View in perspective of the preferred form of ring which may,when desired, be employed to stiffen a portion of the said ear-piece or attachment. Figs. 6 and 7 illustrate modifications ofthe invention.

The device, as shown in Figs. 2 and 4, is made of aflexible elastic substance, preferably rubber. Its general shape is that of a'hollow frustum of a cone. While said device is made in a single piece, it is convenient for purposes of description to divide it into the ear-tube A and the curtain B. The, ear-tube A terminates within in the annular ridge or shoulder a, and on the outside is provided with two flanges, aa forming between them a groove, C. One of these flanges, especially the lower flange, a,

may be omitted,but both flanges arepreferably employed.

The device is applied to the telephonereceiver as shown in Figs. 1 and 3. 4

The curtain B is stretched over the end of the receiver and the device pulled on until the shoulder a rests on the flange or head D of the receiver. On being released the curtain clasps the head of the receiver quite snugly,

its elasticity enabling it to adapt itself to the head, as shown most fully in Fig. 3. When in position on the receiver, the free end of the curtain fits under the shoulder or head D and serves to hold the device in position. To hold the ear-tube A in shape, and to prevent itslipping down over the head D, I sometimes employ. the ring E, which is preferably but slightly elastic and made of a material stiffer than the rubber, the preferred material being metal, such as spring-brass. This ring E is slipped over the ear-tube A and fits in the groove C. Instead of thus holding the ring E to place by means of one or both of the flanges a a the ring may lie in the material of the ear tube or piece A and appear at the surface of the latter, or be located in the interior thereof, these modifications being illustrated in Figs. 6 and 7. flanges a a may be omitted. An annular flange or flanges, as a or a", if sufficiently large, will operate to stiffen the ear-tube to the desired degree.

The device applied to a telephone-receiver greatly increases the efficiency of the latter, because it completely surrounds the car when in use and cuts off extraneous sounds. More over, it forms a cushion for the head, which cushion is much more comfortable than the ordinary telephone-receiver. In addition, the device commends itself on account of its simplicity and ease of application.

I'do not in this case claim anything claimed in another pending application, No. 223,269, filed by me January 3, 1887.

What I claim as new and of my invention, and desire to secure by Letters Patent, is-

1. The combination of the ear-tube A, hav iug shoulder a, and elastic curtain B, adapted to clasp and overlap the end of the receiver, substantially as and for the purposes specified.

In such event the 2. The combination of the cur-tube A, ClFtS- 5. As an attachment for a telephone retic curtain 13, and ring E, substantially {LS and ceiver, the combination of the cur-tube A and for the purposes specified. the curtain B, made in one piece of elastic Inn- 3. The combination of the eztrvtube A, havtei'ial, and. the stiffening-ring O, substantially 5 ing flanges (t a", curtain B, and ring E, subas and for the purposes set forth.

stantiall as and for the )umosess )ecified. 1 1 j 7 4. Th combination of the eautu be A, hzwl Ghohclh ing shoulder a and flanges a (1?, curtain B,

and ring E, substantially as and for the pun xo poses specified. l

vAttest:

O. M. HILL, E. M. HARMON.

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