US997870A - Horn. - Google Patents

Description

G. L. STEVENSON.

HORN.

APPLICATION FILED APB.15,-1910.

997,870, Patented July 11, 1911.

Fig. 1. i

WITNESSES INVENTOR 6. a? Goayglfilvmaoh.

I. JRNEY sTATEsP TE T OFFICE.

GEORGE L. s'ravimson, or rnovmnncn, imonn ISLAND, ASSIGNOB rot HOUSEHOLD CABINET woaxs, or raovibnilcn-miona 81,481). a coaroiu'rion or naomi Be it known that I, Gaoaor: L. Summon, a citizenof the United States, zeQiding atg the city of Providence, in the: v unty Providence andjStete-of Rhode Isla d, have invented certain 'new' anduseful Improvements in Horns, of. which the following is a specification, reference being had therein to t V e accompanying drawing. This invention relates to a sound amplifying device, commonly k m as a horn, the

, same being moreparti c larly adapted for use on sound reproducing instrumentssuch as honographs or the like.

he ob ect of the invention is to construct a horn having unusual acoustic properties;

whereby the sound is not only amplified but where the phonetic, principles of clear, articulate, yet soft-andmellow sound are roduced, in contrary distinction to the e ect of the ordinary flaring or bell-mouthed horn which merely enlarges the sound without reit. A further object of the,invention is .to provide a born that in addition to being simple andinexpensive in construction takes up ut com aratively little room when used either insi e or outside of a phonograph supporting cabinet, or upon being stored away when not in-use. 4

With these and other objects in view, the invent-ion consists of certain novel features :of construction, as will be more fully de- I inexpensive scribed and particularly pointed out in the appended claims. I

In theaccompanyin drawings: 'Fi 1- shows in improve born as mounte on the insidem a cabinet or box on which the phonogr it'ph "*Rtsupported. illustrates thehorn as applied to. t e ordinary honograph instrument. 3 is an en arged perspective view of :my the walls of the i same turned inward at its mouth end forming a contracted opening instead of being vided an improved hornwhich is preferably constructed with a contracted neck portion 1 adapted to be connected by a tube 2, or other suitable means to the needle carrying. 01

Of I

. tion through which the sound ,en zsectionalv 7 at opposite end through ;.-w

soi'indis emitted, thus being sound transmittingarm 3. 'This neck por- .rooj'f of the mouth; gums and teeth ISLAND.

997,8 10, I {D dication ofy dt ht l iatent. Patented July 11, "i1. 'n nqm and A ril is, s mi in. 555,000.

.170 it may i tion is then gradually enlarged into the body-portion substantially rectangular in cross section,whose top and bottom lates 5 and 6 are broad and substantially at and" whose sides 7 and 8 are comparatively 1m; rowand'set substantially at'right angles to' ing a still further contraction {to the mouth 11. This last contraction, however isnot absolutely essential as these platesnily be straight completely to the mouth if I This horn may be made of any desired or suitable material but I preferably construct the same like a, violin body ofthin boards or plates of wood, and join the sections toget er'by glue or by other suitable means; It is found in practice, outside of the acous-' tic properties of this style of horn, that'it is i very inexpensive in construction as 25 pared with the flaring bell-'shapedvhorm ialao that ittakes u very much less room than 'the old style orn and can bestored away in much less-s ace.

is particularly adapted toused within'a cabinet or box 14 and connected to the minij cal instrument 15 by atube, if desired, as: illustrated in Fig.1, or it mix on the outside and above j improv construction or formefhor Fig. 3 in which there is a small a somewhat contracted n'outh' ora sen them 0 instrumentf itself, as illustrated in Fig-2, or in any '11 otwsuitable gconvenient way.

"has an enlarged thin flatfitubular sound amplifying ibody f,- tang'ular in cross seetion as illustrated in I similar in e ecti tojthe plifying and while passing through the horn.

The shape of the horn as bestshown in i Fig. provides Wicle upper and lower l l l l plales 5 andii which, especially when made 2 of thin wood, enable a resonance to be ob tained which can be compared with that ol. j

a violin.

This resonance cannot be oh} llillllet'l lt'i'on'i a plui'a-liiy of narrow strips. Q

'neeiing sanl plates and also SQIVlllg as Therefore the said shape of the horn not only illCllUWn the sound Waves in the inanner liei'einhei'oi'e mentioned as comparable with the niellowing eli'ecl' produced upon the human voice hy ilie shape of the nionlh hut ale: allains lhe amplifying and resonanl ell'eel (llHZllllCLl from broad, thin, single SllQClb of Wood.

upper and lower plates forming sounding boards, and relalively narrow sides connecting said plates and also serving' as sounding hoards said plates and sides diverging from the inlet end of said horn, the outlet ends of said sides being luineil inwardly to form a conti'acled inouih.

A hoi'n having relatively wide and flat upper and lower plates i'oi'ining sounding hoards, anil relatively narrow sides eonsounding hoai'ils, said plales and silica (liwrging' from the inleteinl o'l saiil lioi'n the oniiet ends ol' rZllLl sides ZLIHl said lop ainl l)()ll()lll plalm being LlIl'llL(l ii1\\ai ll lo l'ol'in a vonli'an-ieil mouth.

in testimony whereof l ailix niy einnm Having thus described my invention, what i (-la in as new i015 iFaient, is:

l. A horn having relatively Wide and Hal ainl (leave to secure by Let (i llOlHi l) L. S'lllY EN h'( I'Il. Witnesses:

\VALTER ll. BARNEY, llD'WIX 13. Lixcoiix.

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