US2198993A

US2198993A - Horn

Info

Publication number: US2198993A
Application number: US243129A
Authority: US
Inventors: Felgner Richard
Original assignee: T COHN Inc
Current assignee: T COHN Inc
Priority date: 1938-11-30
Filing date: 1938-11-30
Publication date: 1940-04-30
Anticipated expiration: 1957-04-30

Description

April 30, 1940. R FELGNER 2,198,993

HORN

Filed NOV. 30, 1938 INVETOR. f RZC/mrd f/yner.

yPatented pr. 30, 1940 PArsNT ori-lcs f Yanlass:

y f ltichar'd lFelgner, lSpringfield,

HORN@ Long Island, N. Y.,

.. @Ssgnor to ,'I. Cohn, Inc.; BIQOkIYn N'Y i Application Nvembero, 1938",y Serial No. 243,129.

' molaiins. (Cl. i6-Aso);

This invention concerns ajhorn, and'more particularly a wind instrument' in which avreedi is interposed in a passage or superimposed upon end or side yopenings of a wind` channel.

" For "various reasons Yitis ordinarily not desir-f.

able to execute the reedjin 'one with` the support,

ijfe; 'integrally with the vsurrounding parts;`

Therefore we frequently ndrthe yree'ds'to be 'riv4 eted;- wedged, screwedyclampedjor frictionall'y mounted in place. In other-casesk an adhesivev or solder "is used, care being exercised in all instances to arrange thereed permanently'and cleanly, so that the tonal qualityof rthe 'reed o r reed material is not* impaired.r f

2' In thev instantinvention the reed is mounted ley-electric Welding, 'andf'inore particularly by way'of the Thompson` or resistance ywelding process. Such-a practicecanfbe 'carried out most economically, andcontrary to the concepts of the prior art,-a :high-'tonal quality may beobtained, if the reed isfproperly-mounted or is preconditioned for a propermounting; vIn aspot or` seam weld, as they comeintofquestion inf' the instant invention, the actual' juncture -between thejoint 'materials' is extremely limited in area in comparison with a reed mounted upon a support by other fastening methods Thus a spot weld interconnecting a reed with afsupport will normally be surrounded uponfall sides by an area' yaia-which the parts have not -been unitedfandat which they may not even' bein abutment with each other.v fv .A

-Mfhena reedis mountedxby way of spot weld-f ing, theparts ofthereed to the -sidesfandto the' back of thespot weld-'will therefore .be subject-to vibrations just like the` reed proper i. e. ther` tongue; which isthesound elementproper. Thus it would be impossible .to obtainy a/clearitona-if a flatv reed of the prior artwere assembledin an instrlumentby'way of spot-welding. e

Such a disadvantage oiga spot welded reed has been overcome in the'instant invention byfcurving-',--kinking bending-orf denting the rear parts' 'of the reed in such a manner, that obnoxious vibrations are modulated, dampened, or completely avoided, as it may be desired.

Such shaping of a portion or" the reed has the additional advantagethat `a standard blank may ,be used for a reed and may be fully controlled as to vibrations, the curved or bentportions of the reed being enlarged or restricted accordingly., The instant invention `is herein exemplarily illustratedY by way of a very simple horn, which is coiled--from a printed sheet of metal for in stance-into a truncated cone. Itis an added tion.

thetube H. Aof the reedaextends free to the right, and subiobjectofl this invention to secure the overlapping sides of ysuch a piece of Lsheet material upon each other, in' the same operation in which a reedis mounted thereon.

These and other objects 'of this invention,` which'will be better understood from the following exemplary description, will now be elucidated by' wayjof a simple showing, which is, however,

Dto ber considered as illustrative only, and'not in limitation of this invention.

In thek drawing; 1 fFigjl is a top viewof a blank to beconverted for `a reed. Y' Fig; 2 is a corresponding 'side view. h'

'FigxSshoWs a blank like thatof lFig. .1, arched and lightly shaped'for the purpose of this inven- Fig. 8 is a-fragmentary, partly cross-sectioned sideview,."vvl'iichy serves to illustrate how the welding operation is performed.

. 'Y Fig.-9 V'shows a top View7 of the parts of the horn "of Fig.- 8 after Vthey have been Welded.

^ Fig. 10 is a corresponding end view.

Similar `i numerals refer to similar parts throughout thevarious views.

' Fig; 7 of: the drawing shows a, simple form of a horn,.;in Aconnectionvvitl'i which. the instant in-f ventionis to' be described. The tube Il is shown toffbecoiled up from a substantially trapezoidal blankotsheet metal into thefshape of a `trun cated cone. .Theloverlappingsides I2 and I3-ofthe sheetl metal may be suitably. united. They will here be shown tov be united by the spot Weld i4, by which the reed l5a is also assembled with The vibratory portion or tongue i6 stantially registers with the slanted top opening l1 of tube ll. A mouth piece,ve..g. the wooden nipple i8, is assembled with the tube l l, being engaged, for instance, upon the tapered circumference ofthe tube above reed |5a by Way of a push fit. The horn is actuated and used by engaging the free end `of nipple i8 in the mouth yand blowing thereinto. 'I'he tongue Ia of reed I5a is caused to vibrate, and these vibrations contribute in determining the length of the sound Waves propelled from the large end of tube I'I.

A at reed blank I5 is shown in Figs. 1 and 2. The portion i9 to the left is to be converted as a base, whereas the portion IG to the right serves as a vibrating tongue.

According to this invention the base I9 of reed I5' is curved transversely to the direction at whichl the tongue I6 extends therefrom. Thus We limit the portion of the tongue which is not curved in th-e said direction, and which is there- When the tongue I6 is to remain free and as large as possible, littlecurvature is applied to the base ISa. It is forinstance fore free to vibrate.

shaped cylindrically or conically, as. indicated at ISa` in connection with the reed I5a of Figs. `3 and 4.

stable abutment upon the tube, when the base I5a is welded onto the tube I I by Way of a central spot weld I4. troduced into the curved surface of the base I9; e. g. an inclined iiat cross-formation 20 may be struck up therein, as shown in connection with the reed I5b of Figs.v5 and l6. Such an varrangement imparts positive convexity to the base I9, and will also serve to `delimit the tongue Iib more sharply, if so desired, as shown in the said Figures 5 and 6.

An arrangement for performing the Welding operation is shown in Fig. 8. The tube II is slid into abutment onto a substantially horizontal electrode 2I of a spot-welding apparatus, into a position in which the overlapping edgesv I2 and I3 substantially underlie the vertically reciprocatable second electrode 22 of such apparatus. .Onto the overlapping seams of they tube II thus mounted upon the electrode 2l, is fed a reed Ib so that the base I9?) overlies the overlapping seams I2 and I3 and so that the tongue IBD substantially registers with the opening Il at the top end of tube I I. Before the spot Welding operation is carried out, the reed |51) may beretained in this I position by an arm 23, which depresses the reed I5b into the registering position, engaging for instance centrally upon the crosseformationy 2U.

The spot Welding operation is now performed by lowering the second electrode 22 and passing currents therefrom through the overlying three layers ISD, I2 and I3 to the rst electrode 2l. The arm 23 and the electrode 22 may then be released, and the spot-Welding operationis iinished.

It will be noticed that such curvatureA merging with the ilat portion of the tongue Ila Reenforcing edges may be in- A party versed inthe metal Working arts will understand that a die, which produces the `deformation of the reed, shown in Figs. 5 and 6,

in connection with reed IGb, may also produce the deformation I6a of Figs. 3 and 4, by a simple adjustment in the die, or even by merely striking the reed I6 less hardthan it would be necessary in producing the reed I 6b. The deformation of the reed may be'enhanced, and additional adjustment may bebrought about asvto itsv curvature, if the arm or holder 23 is advanced so far onto the cross-formation 20, or onto the correi `sponding portions o f the reed Isa, that the reed is indented thereby. Such an indenture 24 is for instance indicatedr upon the reedr I5b in Fig. 9.

Having thus described my invention in detail I do not wish to be limited thereby, except as the state of the art and the appended claims may require, for it is obvious that various modifications and changes may be made in theform of embodiment of my invention, Without departing from the spirit and scope thereof. v

I claim:

l. A sound instrument comprising a tube and a reed, said reed having` a transversely curved base resistance Welded ontofsai'd tube and a ilat tongue extending over lan opening in said tube. l 2. A sound instrument comprising a conical tube and a reed, said reed having a transversely curved base spot Welded onto said tube and a iiat tongue extending over an opening insaid f tube.

3. sound instrument'l comprising a tube, and a reed, said reed having a base resistance welded onto said tube and a ilat tongue extending over an opening in said tube said base being convexly shaped and merging at a curved lineV with said tongue in order to vliinitthe vibrations of said reed.

4. A sound instrument comprising a tube and a reed, said reed. having a base resistance welded ontosaid tube and a fiattongue extending overv and adapted to close an openingin said tube, said b ase being curved in order to t in abutment onto said tube and to limit the vibrations of said reed. f

5. A sound instrument comprising a tube and a reed, said reed having a base resistance Welded onto said tube and a iiat tongue .extending over an opening in said tube said base being convexly shaped and indented in order to limit the vibrations `of said reed. p

6. A sound instrument comprising a tube. having overlapping edges, and a reed having a curved base assembled with said tube by a resistance weld across the overlapping edges of the tube and a nat tongue extending over an ropening in said tube. `7. A sound instrument `comprising a tube and a. reed, said reed having .a Ibase resistance weldedl onto said tube and a dat tongue extending over f an opening in saidv tube,l said base having irregularly struck-upportions producing transverse reinforcing ridges therein.V

, RICHARDv FELGNER.