US1270534A - Phonograph. - Google Patents

Description

G. W. LORIMER.

PHONOGRAPH.

APPLICATION FILED on. 6. {915.

1,270,534. Patented June 25, 191&

caches-w. Lommnn; or 1 1cm, omok,

a ucaut mqpttober 6,1915. Serial so.

' exact description.

My invention relates to improvements in sound conducting horns and more particularly to phonograph horns. p

The object of the invention is to provide a phonograph horn, the walls of which. are under stress of such a character that the tone of the instrument is much improved.

. Specification of Letters Patent.

. HIHONOGRAPH.

Patented June 25, 191's.

other fiber-horns, the latter material being used in connection with expensive machines. I

' The opening through which the sound issues may be closed b ratan 15 or any other suitable closure may be provided.

, I have found in practice that by maintaining the horn under tension the sound is greatly improved, thevibrations being effected in such manner as to produce tones in [a moderate priced instrument which coin- A more specific object is to provide a ph'opograph horn of non collapsible material, the Wall at one end of which, is maintained under constant tension.

In the accompanying drawings, I have illustrated one embodiment of the invention. Other embodiments however, may be devised.

Figure 1 is an elevation partlyin section of a phonograph which will serve to illus trate the improvement.

Fig. 2 is a side elevation thereof section.

The phonograph is provided with the usual case or box 1, containing suitable driving mechanism 2 for rotating the supporti disk 3 and the phonograph record 4 place thereon. The reproducer 5 may be of stand: ard construction and opens through suitable partly larly "adapted for advantage in connection tubing 6, 7 to thephonograph horn, which is indicated as a whole by reference 8. In the present illustration, the horn is made of metal and is of circular cross section at one,

end 9, but is of oval cross section at the other end 10, the intermediate portion being flaring. This shape may-be obtained by using va funnel shaped horn and widening-it at' the large end to partially flatten it out. g The oval end of the horn is maintained under tension by means of a pair of semicircular brackets 11, each provided with an extension 12 passing through the wall ofthe case 1, and secured by nuts 13, hearing against washers 14. By tightening up on the nuts 13, the brackets 11 are drawn apart and the pull thus'results in adjustingtheonly with metal horns but with wood andthe cabinet.

pare favorably with those of the most'expensivephonographs on the market. The

tension may be maintained in other ways than illustrated and the shape of the horn need not necessarily be that shown in the drawings. 1 do not limit myself to horns formed of the materials specified, since other materials including flexible material of vari-' ous kinds may besatisfactorily employed. Furthermore, while the present improvements have been described herein as particuuse in connection; with it is obvious that said improvements are of much broaderadaptation, and hence it is not desired to limit the same to the particular use shown and described, For instance, closed herein, whereby the tone qualities of a horn are improved, might also be used to with telephones,

phonograph horns,

the larger and more the principle dismegaphones, and various other types of.

horns. to the details of construction described, except where limitations appended claims. 7

What I claim as new and desire to obtain f by Letters Patent of the United States is:

. materia 1. A non-collapsible horn, the walls of whichare maintained under tension to improve the quality of the tone. Y

2. A phonograph horn of non-collapsible the wall at maintained under tension to improve the quality of the tone.

Neither" do I desire to limit myselfare imposed. in the one end of wh1ch'is 3 The combination with a phonograph horn, of means for drawing the walls apart at one end thereof to maintain said walls underte'nsion to improve the quality of the tone.

4. A phonograph having a flaring horn of non-collapslble material, and means for maintaining the large end thereof under:

constant stress.

.5. In a phonograph, the combination with the casing thereof, of a partially flattened sion.

9. In a phonograph, the combination with the casing thereof, of a horn, brackets fit-- horn of flexiblematerial in the base thereof, the small end of said horn being circu-. lar and the large end thereof being 4 semi-circular brackets fitting withm the ends of said oval, extensions thereon passing through the walls of said casing and means on the outside of said walls for drawa ing said brackets apart to maintain said" horn under tension.

6. In a phonograph; the combination'with a non-collapsible horn, of means for supporting the outlet end thereof and maintaining it under tension.

7. A honograph havin a permanently orn, the Walls of which are supshaped ported under tension. I 1 8. In a phonograph, the combination with maintain the walls of said horn un ertenting within said horn, extensions on said brackets passing through the walls of said casing, and'means on theputside of'said'" walls for drawing said brackets apart to maintain said horn under tension.

oval,

'10. In a phonograph, the' combination with the casing thereof, of a horn, one end of which is supported by said casing, and adJuStabIe means supporting the other .end

' of said horn-under-tension and out of contact with said casing 11; In, combination, a sound conducting horn, means for maintaining the Walls of said horn under sufficient tension to modify the tone qualities thereof, and means for adjustingsaid tension.-

12. In combination, aflaring sound conducting horn, means tending to" enlarge the opening ,at the large end of said horn to thereby maintain the adjacent walls under tension, and means for adjusting said ten- 13.- In combinatiom'a sound conducting horn, a'housing therefor, and means cooperat ng with said housing and with said horn to support the latter with its walls out of contact with said housing. and to maintain said walls under tension.

In witnesswhereof, I, hereunto subscribe my name th s 2nd. day of October, A. D.

@GEORGEW. YLORIMER! Witness 3 FRA Gemin

Images