US843891A - Telephone-receiver. - Google Patents

Description

No. 843,891. PATENTED FEB. 12, 1907. H. w. HAFF.

TELEPHONE RECEIVER. 7 APPLICATION FILED AUG. 27, 1906a wi t we so 0 e fiwxa. Mm vw e k% I acousticon an sons.

UNITED STATES-,1 PATENT OFFICE.

HOWELL on. NEW YORK, N. Y., ASSIGNOR TO KELLEY ITURNER,

OF NEW YORK, N. Y.-

TELEPHONE-RECEIVER;

'Speciflcationof Letterlgatentl Pawnee-m.

Application and August 27,1906. seriaiu 'ssaoaa To all whom it may concern.-

Be it known that I, HOWELL W. HAFF, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certainjnewand useful Improvements in Telephone-Receivers, of which the following is a full, clear, and exact description.

. My invention relates to telephonic receivers, and (particularly those used with other apparatus for deaf per- The principal object of the invention is to improve the mechanical features of construc- 'acter above. mentione tion and particularly the switch mechanism b which the receiver is thrown into and out" o 0 action. v

With this and othcrcbj'ect s in view the invention consists in the features of construction hereinafter set forth and claimed;

f The'figure of the drawing illustrates areceiver embodying the principles of my invention.

current in telephonic a paratuso the charit is customa to have a. switch embodied the receiver,

which normally maintains-the battery-air uit 0 ned, but which is in a convenient place, or engagement with the operatorsfin- -;:ger so that the circuit may be closed for 0 e'ration whenever desired. Inasmuch as t e available, space within the receiver is limited, 'it' is a matter of considerable difficultyto arrange this'switch to work positively and effi- -ciently under all circumstances. In carrying out my invention I aim to secure these purposes witha switch-of verymheap and simple construction. 5

Referring to the drawing, 1 denotes the casing of a receiver having a permanent magnet 2 inset therein.

. 3 indicate the usual magnet-poles of soft iron, ca bobbins 4. v

The term nal wires of the bobbins are shown at .5 and 6; of'which 5'is soldered to a contact 10 and a tip-contact 11',

-collar-7 in alinement with a hole 8 in the casthe electricalconnection with the receiver employ an ordinary plug 9, havin a sleeveor the respective circuit-wires. The plug is adapted to be inserted through the bushed -h0l'e'8, so, that the tip-contact 1 1 enters the collar 7 and makes electrical contact therewith. The

sleeve-contact 10 lies adjacent to the bushed hole 8 under these circumstances and falls in the path of the switch element above referred to. The switch element (designated at 12) is angularly at the ppint 1'3 and pivotedv at 14 to the casing 1.

- y reason of the bent porconveniently madepf sheet metal bent right tion 13 the outer part of the switch element into s ring enga ement with the sleeve-contact a ove descrr ed. When the switch element is'moved into this relation, it is evident that theelect'ric circuit com lete.

for the receiver is at I claim is Y In a telephone instrumentQ'a collar consti tuting' a fixed electrical terminal, a switch element also constituting an electrical terminal and having means thereon whereby-it may be moved to and fro b hand mani ulation, and a plug having a tlp-contact a apted to enter said collar and having a sleeve-contact adapted to fall into the path of said switch element.

In witness whereof I subscribe my signature in the presence of two witnesses. I

. HOWELL-W. HAFF.

- Witnesses:

ALFRED W. PROCTOR,

W M. SrooKBRmon.

Images