US859464A - Antibuzzing device for telephones. - Google Patents

Description

PATENTBD JULY 9, 1907v 'A. SGHAFFER.

ANTIBUZZING DEVICE FOR TELBPHONES.

APPLICATION FILED DEO.24,1906.

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AUGUST SGI'IAFFER, OF EAST COLUMBUS, OHIO.

Specification of Letters Patent.

Patented July 9, 1907.

Application filed December 24,1906. Serial No. 349,328.

To all whom it may concern:

Be it known that I, AUG Us'r ScI-IArrnn, a citizen of the United States, residing at East Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Antibuzzing Device for Telephones, of which the iollowing is a specification.

The object of this invention is to provide a simple, cheap and effective device for eliminating buzzing in telephone receivers.

In my invention I provide, as will be hereinafter fully explained, a device that can be easily and promptly interposed between the diaphragm and cap ring or car piece of the receiver, said device operating to deaden, absorb or prevent the creation or transmission of such noises to the ear of the user.

The invention consists in the construction hereinafter described and claimed.

In the accompanying drawings in which I have illustrated an embodiment of the invention-Figure 1 is an edge view of the wire netting or screen piece; Fig. 2 is a plan view of the same; Fig. 3 is an edge view of an annulus that may be employed in the construction; Fig. 4 is a plan view of the same; Figs. 5 and 6 are edge and sectional views respectively of the concave-convex disk; Fig. 7 is a plan view of the same; Fig. 8 is an edge view of the several parts assembled and bound together; Fig. 9 is a plan view of the same; Fig. 10 is a view ofa fraction of an ordinary telephone receiver showing my device applied thereto, the cap ring or car piece being in diametrical section, the parts in this view being on a larger scale than in the other views.

The parts of the anti-buzzing device, as above referred to and as shown, are all of circular form and of substantially the same diameter to adapt them to the form ol receiver at present in common use, but I know of no reason why they could not be modified in this respect if the form of the receiver required it. The screen part 11 of the device comprises a flat piece of woven metal, preferably steel wire, netting, with a disk 11 of preferably waxed paper of equal diameter pasted or glued to one side of it. The paper member of the screen piece is coated in its center, as within the circle ll preferably with a thick enamel paint or shellac. l2 designates an annulus preferably of mica, although it might be of metal, paper or other material. 13 designates the concave-convex piece. This last named piece is preferably of metal, for examplesaluminium or steel. This concave-convex piece is covered on both sides, as seen at l3 and 13, with ordinary paperwrapping paper will do pasted or glued thereto. of this (lisk is coated in its center, as within the circle 3, with a thick enamel paint or shellac. These separate parts, as above described, are all assembled together or superposed on each other in the order in which they are shown and as seen in Figs. 8 and I0; and for convenience in handling the parts are bound together at the edges. Small metallic clips 14 secured at different points around the edge of the assembled parts will suffice for this last named purpose. The device as thus constructed is clamped in the telephone receiver between the cap ring or car piece 15 and the body or handle piece 115 with the wire netting piece lying next the diaphragm of the receiver.

Various modifications in the construction thus shown and described can be made but the best results I believe are attained with constructions as precisely described.

The annulus shown in Figs. 3 and 4 can be entirely omitted but, as before indicated, better results are had when it is included.

I have found by many trials and tests that my device eliminates entirely or largely relieves the buzzing commonly observed by users of telephone receivers, but I am not at present prepared to explain why the device effects this result.

What I claim and desire to secure by Letters Pat ent is:

1. An anti-buzzing device for telephone receivers coinprising essentially in combination, a wire screen, a washerlike device, and a concavo convex piece, adapted to he placed together and secured in the ear piece of the receiver.

2. An anti-buzzing device for telephone receivers con1 prising essentially in combination, a wire screen, and a concave-convex piece, adapted to be placed together and sc cured in the ear piece of the receiver.

3. An untthuzzing device for telephone receivers com prising in combination, a woven wire screen and a paper covering added thereto.

4. In an anti huzzing device for telephone receivers, 11 wire screen and a paper covering therefor having a painted or shellackcd central portion.

In an anti-buzzing device for telephone receivers, the combination of a wire screen and a concave-convex piece having a paper covering added thereto.

6. In an anti-buzzing device for telephone receivers. the combination of a wire screen and a concavo convcx piece having a paper covering added thereto on both sides.

1. In an anti-buzzing device for telephone receivers. the

combination of a wire screen and a concave-convex disk The convex side of the paper covering having a paper covering added thereto, said paper covering i 10. An anti'buzzing device comprising in combination, a

having a painted or shellacked center. wire screen and a metallic disk superposed one with refer- S. In an anti-buzzing device for telephone receivers, the enee to the otherv combination of a wire screen, and a eoncavoconvex piece 11. An anti-bnzzing device comprising in combination, a

superposed with reference to each other, and means for metallic plate, a rine,- or washer, and a wire screen.

holding them together. AUGUST SUHAFI IGIL 0. An antibuzzing; device comprising in combination, a Witnesses:

metallic disk, a wire screen, and a paper covering added ALICE B. Coon,

thereto. I BENJAMIN Fl NoKnL.

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