US1938321A - Wind musical instrument - Google Patents

Description

' Dec. 5, 1933. w R DAUSMAN 1,938,321

WIND MUS IGAL INSTRUMENT Filed Ju'ne 29. 1932 i J v-/.'

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Patented Dec. 5, 1933 1,938,321 WIND MUSICAL INSTRUMENT Willard P. Dausman, Elkhart, Ind., assigner to C. G. Conn, Ltd.,- Elkhart, Ind., a corporation of Indiana Application Il'une 29, 1932; Serial No. 619,851.

' s 'claims (c1. :a4-392) AMy invention relates to the piston `valves of cornets, and similar musical instruments, and more particularly tothe valve keys` for such instruments.

The .piston valves of corncts, and other musical instruments which are provided with reciprocating valves, are providedwith some means to prevent casual rotation of the valve within its casing in order that the proper registration of the valve ports and passages with the valve casing ports and passages may be maintained, Such a means to prevent valve rotation has taken many and various forms, all of which are more or less effective, and all oi which are objectionable to some degree, especially because of excessive friction and Wear.

The principal objectof my invention 'is to proide improved and simpliedy means to prevent casual rotation" of thepiston valve of a cornet,

and like instruments, this improved means com' prising ay stationary rod-like key which has a sliding* telescopic connection with the piston' valve', and which is disjoined from the valve casing.

Another and more specific object ofmy invention is' to provide a valveQkey which has a telescopic sliding connection with rthe piston valve and which is disposed between the valve stern and the valve casing. f

Other'and more specific objects ofl the invention arementioned and described herein.

The preferred embodiment of my invention is illustrated in the accompanying drawing, where- 1n:

Figure 1 illustrates a fragmental side View of a wind musical instrument of the cornet type vand including the three piston valve casings, and associated parts;

Fig; 2 is an enlarged sectional View, par- 40 tially in section, ofone of the cornet valve casings, its piston valve, and other details and parts, illustrating the application of my invention theretowith the'valve in the elevated posi Fig. 3 is a similar view in fragmental section illustrating the piston valve in the depressed position;

Fig. 4illustratesvtwo side elevational views of the valve key and the head plate therefor;

Fig. 5 illustrates a bottom plan view of the valve key head and valve key connected therewith; and

Fig. 6 illustrates a modified form of the valve key head.

Similar numerals of reference indicate like of said disk.v

parts throughout the several views on the drawi ing.

`Referring lnow to the details of the drawing` the numeral 1 indicates a tubular cornet valve casing of the conventional type and within which the usual reciprocatory cylindrical piston valve l 2 is arranged, said valve being normally upwardly urged by a coil spring 3 which is disposed within the casing 1 and seated upon the inner face 4of the' casing bottom cap 4. The valve 2165 may be provided with thev usual ports and passages-notshown`-which are well known in the art, and may be provided also with the top head member 5 which is rigidly mounted in the upper end of the tubular cylindrical portion thereof'.- 70 For reciprocally depressing the valve 2 a stem 6 is rigidly and centrally connected therewith'in the head portion at 7,- said stein extending up` wardly through" the aperture 8 provided in the casing topv head 9 which may be screw threaded 75 upon the valve casinglO, as is well'known.

' The finger tip 1'1 may be mounted upon-the upper end of thevstem 6 exteriorly of the casing cap 9 for actuating the valve 2. The numeral 12 indicates a flat substantially circular plate or disk 8@ which functions as the head for the rod-like key 13, the latter being rigidly fastened in the former at 14 at a point intermediate the centerof said disk land'its outer periphery and extending at substantially right angles thereto. The disk 12 may be providedwith the relatively thin marginal flange l5A and -a radially arranged stop lug 16,7the latter being preferably coextensive with the outer periphery of the 'marginal flange 15 ,c n The disk 12 is adapted to be clamped between the upper end of the valve casing 1 and the casing cap 9, and when so fastened the flange 15 rests against the end of the valve casing and the reduced body portion of said disk fits within the bore of the valve casing With slight clearance and with the stop lug 16 engaging in a' slot 17 formed in the edge of the valve casing 1. In the posi-- tion of the disk l2, as above described, the casing cap 9 is screwed snugly against the upper 19u surface of the disk 12, the engagement of stop lug 16 in casing slot 17 confining the disk 12 against rotational displacement. The disk 12 is provided with a central aperture 18 which is traversed by the stem 6, with slight 105 clearance to eliminate friction between the parts. The rod-like key 13 depends fromthe disk or head 12 substantially parallel with the axis of the stem 6 and engages slidably in a bearing hole 19 formed in the valve head 5, in which hole said key fits with very slight clearance, said hole extending substantially parallel with the axis of the valve 2.

From the foregoing it will be evident that the engagement of the disk lug 16 in the slot 17 effectually prevents casual rotation of the disk 12, and that the rod-like key 13, which depends from said disk and which slidably engages the bearing hole 19 in the valve head 5, eiectually confines the valve 2 against casual rotation. The rened form of the key 13 contemplates a highly polished cylindrical member which slidably engages the bearing hole 19 with so little friction that the engagement is practically without wear on either yof the parts.

In the modicaton illustrated Vin Fig. 6 the key head .12 is lengthened substantially and provided with a tapered lower end 20 to facilitate its introduction to the casing interior.. And in this structure a yieldable ring-like disk 21,` made of cork or other `suitable yieldable material, is mounted lin a suitable recess provided in the upper face of the member 12, said disk 21 preferablyprojecting above theplaneof ythe'lange 15 of saidhea'dan'd being directly engaged by the ca p 9 wheny the latter is screwed into position on the casing 1.

L Ina musical instrument of the characterdescri'bedthe combination with the valve casing, the reciprocatory valve therein, and a valve kcasing pap, of means to prevent casual rotationA of said valve, said means comprising an anchorage element mounted between said valve casing end and said casingcap,A means-to prevent-rotation o f said anchorageelement, and an elongated key rigidly connected with said anchorage element and extending downward into the valvecasing bore into slidable telescopic relation with vsaid valve. y

2. In v'a windrnusioal instrument of the character Vde s cribe :l,'the combination with the valve casing, vthe reciprocatory valve therein, a stern for isaidpvalve, and cap for said valve casing, of meanstowprevent casual rotation of said valve, said meansfcomprising an apertured anchorage element mounted between said valve casing end and Asaiducasing cap, andan elongated key rigidly connected with said anchorage element and eX- tending downward intothe valve casing bore into telescopic slidablerelationvwith said valve, said valve rstem vtraversing the aperture in said anchorage element.

3.*In a wind musical instrument of the ychar- A acter described, the combination with the valve casing and a reciprocatoryvalve therein, of means to prevent rotation of said valve, said means comprising an element rigidly mounted adjacent the t end of said valve casing', a yieldable element mounted thereon, an elongated key within said valve casing and disjoined therefrom, and a slidable telescopic connection for said key'between said rigidly mounted element andV said valve` 4. Ina wind-musical instrument of the character described, the combination with the valve casing, the reciprocatory valve therein, and a valve casing cap screw threaded to said casing, of Y means to prevent casual rotation of said valve, said means comprising an anchorage element mounted between said valve casing end and said casing cap and provided with a yieldable pad which is engaged by said casing cap, means to prevent rotation of said anchorage element,rand an elongated key rigidly connected with said anchorage element and extending downward into the valve 'casing bore into slidable telescopic relation with said valve.

5. AIn 'a wind musical instrument of the character described, the combination with a valve vcasing, a reciprocatory valve therein, an apertured removable'ca'p for said valve casing, and the valve stem for said valve, of means to prevent rotation of said valve, said means comprising a centrally apertured element nonrotata'bly mounted between 'said valve casing and the cap therefor, said valve stem traversing said aperture of saidk element, and an elongated key connected with and depending from said centrally apertured lelement and `projecting downward into the valveY casing relation with said valve.

6. In a wind vmusical instrument -of the character described, the combination with a valve casing, a reciprocatory valve therein, a centrally apertured casing cap removably mounted on said casing, anda valve stem connected with said valve and traversing said casingfca'p aperture, ofmeans to prevent rotation of said valve when reciprocal*- ly actuated, said means `comprising va centrally apertured anchoragelplate nonrotatably 'mounted between said valvecasingand the capl there- Vfor, 'said valve stern traversing 'said anchorage plate aperturaand an elongated key vconnected with and depending from said 'anchorage plate and projecting downward into the valve casing bore Yeccentric'allyv'thereof `and into lslidable telescopic relation with Said valve.v

WILLARD P. DAUSBLAN.V

bore'eccentrically thereof into slidable telescopic n

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