US2302914A

US2302914A - Wind musical instrument

Info

Publication number: US2302914A
Application number: US397858A
Authority: US
Inventors: Harry G Runyon
Original assignee: Conn Ltd C G
Current assignee: CG Conn Ltd
Priority date: 1941-06-13
Filing date: 1941-06-13
Publication date: 1942-11-24
Anticipated expiration: 1959-11-24

Description

Nov. 24, 1942. H. G. RuNYoN WIND MUSICAL INSTRUMENT Filed June 13, 1941 Patented Nov. 24, 1942 WIND MUSICAL INSTRUMENT Harry G. Runyon, Elkhart, Ind., assigner to C. G.

Conn, Ltd., Elkhart, Ind., a corporation of Indiana Application June 13, 1941, Serial No. 397,858

8 Claims.

This invention relates to wind musical instruments and more particularly to valve constructions for cornets, trumpets and the like.

In valves for instruments of this type, a cylinder type valve is usually employed, having a plurality of passages therethrough to control the direction of air ow according to the position of the valve, and it is essential for proper operation that the valve be prevented from rotation. It is accordingly one of the objects of the present invention to provide valve construction for wind musical instruments in which the valve is held against rotation and in which binding interfering with free operation of the valve is prevented.

Still another object of the invention is to provide a wind musical instrument having a valve construction which can be assembled as a unit and inserted in the valve casing Without requiring additional adjustments.

Still another object of the invention is to provide a wind musical instrument having a valve spring operated in one direction, in which singing or vibration of the spring is prevented.

Other objects, advantages and novel features of the invention will be apparent from the following description when read in connection with the accompanying drawing, in which:

Figure 1 is a side elevation ofa cornet valve assembly embodying the invention;

Figure 2 is an enlarged partial section with parts in elevation of one of the valve units of Figure 1;

Figure 3 is a partial elevation showing the valve removed from the casing;

Figure 4 is a section on the line 4--4 of Figure 3;

Figure 5 is a view similar to Figure 4, with the bridge pieces removed;

Figure 6 is a section on the line 6-6 of Figure 3;

Figure '7 is a section on the line 1-'I of Figure 2; and

Figure 8 is a partial section on the line 8--8 of Figure 7.

The usual cornet valve assembly as shown in Figure 1 comprises three valve casings I0, interconnected by supporting members I2 to hold them in assembled position, and communicating through pipes or conduits I4. A plurality of pipe or conduit connections IS are provided for connection to other parts of the instrument. Each of the valve casings contains a reciprocable valve body having a reduced stem I8 projecting from the upper end of the valve casing and teri minating in nger pads 20.

Each of the valves, according to the present invention, comprises a sleeve 22 fitting closely in the lower portion of the valve casings I0. The valve body comprises a hollow cylindrical body portion 24 fitting closely in the sleeve 22 and slidable vertically therein. Each valve body is ic-rined with passages 26 extending therethrough and to register with the conduits I4 and Iii to establish communication therebetween as desired.

Rigidly connected to the upper end of each valve body 24 is a reduced intermediate stem 28, terminating at its upper end in a reduced key portion Sil, as best seen in Figures 4 and 5. As shown, the key portion is substantially cylindrical with diametrically opposite sides flattened, but any other non-circular shape would be equally satisfactory. The key portion is adapted to receive a bridge piece 32, formed by a flat plate having a central opening to fit over the key portion and with oppositely extending ears. Guide pins 34 are rigidly connected to the ears of the bridge piece 32 and extend into openings in the top part of the valve body 24. In this manner the guide pins are rigidly supported at both ends for movement with the valve body. The bridge piece 32 is held in place by a collar 3% carried by the lower end of the valve stem I8 and pressing vagainst the upper surface of the bridge piece when the stem I8 is threaded into the upper end of the stem 28.

In order to prevent rotation of the valve, a guide plate 38 loosely surrounds the stem portion. 28 and is formed in its periphery at diametrically opposite points with grooves 4I) to receive the guide pins 34. The grooves 4i! may be breached in the periphery of the guide plate and accurately formed to exact size so as to engage the guide pins 34 relatively snugly without creating any perceptible amount of frictional resistance to movement of the valve. The guide plate 3S is itself prevented from turning relative to the valve casing by a lug 42 extending downwardly from the periphery of the guide plate at one side thereof, and engaging in a notch 44 formed in the upper edge of the sleeve 22. The guide plate is of such a size as to rest 0n the top edge of the sleeve 22 with the lug 42 fitting .into the groove 44 so that the guide plate is prevented. from both rotation and longitudinal movement. However, when it is desired to remove the valve assembly, the guide plate will slide upwardly through the upper end of the valve casing.

The valve is normally urged to its uppermost position by a coil spring 4B surrounding the stem 2B and pressing against bridge piece 32 and guide plate 38. In order to prevent binding of the spring at the point Where the stem passes through the guide plate, the guide plate may be formed with an upwardly tapered collar 48 around which the spring fits. In order to prevent vibration or singing of the spring 4S when the valve is operated, it is formed of such -a size as to engage the stem 28 with a light friction so as to dampen any vibrations of the spring. The friction is preferably made so light as not to interfere with free operation of the valve and the spring, but will effectively prevent any vibration of the spring which might become annoying.

The valve is held in place in the casing by a cap 5i) screwed thereon on the upper end of the casing, a similar cap 52 formed with an opening therethrough to prevent trapping of air being screwed thereon on the lower end of the casing.

In assembling the valve, the valve and its stem 28 may be formed either integrally or in two pieces, in any desired ina-nner. The collar 5,3 may then be slipped over the valve stem and the spring 45 may be placed over the collar. Thereafter, the bridge piece 32 with the guide pins 34 rigidly connected thereto may be tted into place and the valve stem I8 may be threaded into the upper end of the stem 28 to hold the bridge piece in place. The entire assembly may then be inserted in the valve casing and turned until the lug 42 drops into the notch 44. When the cap 50 is screwed in place and the ringer piece 29 is inserted, the assembly is complete. It will be noted that the guide pins 34 lie on diametrically opposite sides of the stem so that the gui forces are balanced about the axis of the v .lve and there is no tendency for binding to occur. After the valve is assembled, the sming 28 not only urges the valve body towards its uppermost position, but also holds the guide plate 38 properly seated on the upper end of the sleeve 22.

While one embodiment of the invention has been shown and described in detail, it will be understood that this is illustrative only and is not intended as a denition of the scope of the invention, reference being had for this purpose to the appended claims.

What is claimed is:

l. In a wind musical instrument, a valve casing, a valve reciprocable therein, a guide pin rigidly carried by said valve eccentric to the axis of the casing. guide means non-rotatably supported in the valve casing and slidably engaging said pin to prevent the valve from rotating in the casing, and resilient means acting between the valve and a part iixed relative to the casing to urge the valve in one direction.

2. In a wind musical instrument, a valve casing, a valve reciprocable therein, a pair of guide pins rigidly carried by said valve at diametrically opposite sides of its axis, guide means non-rotatably supported in the valve casing and slidably engaging said ins to prevent the valve from rotating in the casing, and resilient means acting between the valve and a part iixed relative to the casing to urge the valve in one direction.

3. In a wind musical instrument, a valve casing, a valve reciprocable therein, said valve having a reduced stem extending from one end of the casing, a bridge piece secured rigidly to the stern spaced from the valve, a guide pin carried at its opposite ends by the bridge piece and the valve eccentric to the stem guide means non-rotatably supported by the casing and slidably engaging said pin and the valve stem to prevent casual rotation of the valve, and resilient means acting between a part fixed relative to the valve and a part xed relative to the casing urging the valve in one direction.

4. In a wind musical instrument, a valve casing, a valve reciprocable therein, said valve having a reduced stern extending from one end of the casing, a bridge piece secured rigidly to the stem spaced from the valve, a guide pin carried at its opposite ends by the bridge piece and the valve eccentric to the stem, a guide plate slidably surrounding the stem and having an opening therein through which the guide pin slidably passes, means to prevent rotation of said guide plate, and resilient means acting between a part xed relative to the valve and a part fixed relative to the casing urging the valve in one direction.

5. In a wind musical instrument, a valve casing, a valve reciprocable therein, said valve having a reduced stem extending from one end of the casing, a bridge piece secured rigidly to the stem spaced from the valve, a guide pin carried at its opposite ends by the bridge piece and the valve eccentric to the stem, a guide plate slidably surrounding the stem and having a substantially radial slot in its periphery slidably to receive the guide pin, interengaging means on the casing and guide plate to prevent relative rotation therebetween, and resilient means acting between a part fixed relative to the valve and a. part xed relative to the casing to urge the valve in one direction.

. In a wind musical instrument. a valve casing, a valve reciprocable therein. said valve having a reduced stem extending from one end of the casing, a bridge piece secured rigidly to the spaced from the valve, a pair of guide pins carried at their opposite ends by the valve and the bridge piece at diametrically opposite sides of the stem, guide plate slidably surrounding the stein and having substantially :adial slots in its periphery slidably to receive the guide pins, interengaging means on the casing guide plate to prevent relative rotation therebetween, and resilient means engaging the guide plate and acting on the valve to urge it in one direction.

7. In a wind musical instrument. a valve casing, a valve reciprocable therein. said valve having a reduced stern extending from one end of the casing, a bridge piece secured rigidly to the stem spaced from the valve, a pair of guide pins carried at their opposite ends by the vol fe and the bridge piece at diametricallv creo the stem, a guide plate slidably si. ding the stem and having substantially radial slats in its periphery slidably to receive the guide pins. interengaging means on the casing and guide plate to prevent relative rotation therebetween, and a coil spring surrounding the stem acting between the guide plate and the bridge A ,iece to urge the valve in one direction, said spring fricticnally engaging the stem to prevent vibration of the spring.

8. In a. wind instrument, a valve construction comprising a cylindrical valve casing having ports in its sides, a cylindrical valve reciprocable in the casing to control the ports. a reduced stem at one end of the valve proiecting out of the casing by which the valve may be reciprocated. interengaging means carried by the valve and the casing to prevent relative rotation between. and a coil spring acting between a part xed relative to the valve and a part fixed relative to the casing to urge the valve in a direction toward the stem, coil spring surrounding the stem and lying the annular space between the stem and the Caine, and having the sides of its coils frictionally engaging one of them to dampen longitudinal vibrations of the spring upon actuation of the valve.

HARRY G. RUNYON.