US1449211A - Whistle - Google Patents

Description

Mar. 20, 1923., 1,449,213.

N. G. BAKER.

I,WHISTLE. vFILED Nov. e', 1922.

Fatented Mar. Ztl, "i923,

atraen NORMAN G. BAKER, 0F MUSCTKNE, liO'W.

WHXSTLE.

Application filed. November 6, 1922. Serial No. 599,467.

To aZZ whom t may concern:

Be it known that I, NORMAN G. BAKER, a citizen of the United States,l residing at Muscatine, in the county of Muscatine and State of lowa, have invented certain new and useful Improvements in l/Vhistles; and l hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

This invention is a novel improvement in whistles for musical instruments, such as calliopes. rlhe object of the present invention is to insure more direct and uniform pressure of the air discharged from the cup of the whistle; and to improve the construction of the air distributing devices in the cup of the whistle.

I will explain the invention with reference to the accompanying drawings and summarize in the claims the novel features for which protection is desired.

ln the drawings: v

Fig. l is an enlarged` vertical section through the complete whistle.

Fig. 2 is a transverse section on the 2-2 Fig. l, looking downwardly.

Fig. 3 is a detail section on the line 3-3 Fig. 2.

Fig. 4t is a perspective of the cup and bellsupporting devices thereon detached.

Calliope whistles are usually made with line ' a hollow top piece called a bell and a lower part called a cup, which are disposed in axial alinement, with the bell spaced from the cup, the distance therebetween regulating the tone or speaking quality of the whistle. The bell is made adjustable toward or from the cup, and supported thereon. TW ithin the cup is an air distributing` disk by which the air or steam is distributed below the open end of the bell to produce the sound. The cup is made fast to a suitable support and connected with a compressed air or steam supply, or to the exhaust of a combustion engine. j

ln the accompanying drawings the cup l is closed at or near its bottom by a plate l, and near its top by a plate 1b. These plates have axial openings. Between plates l, l is interposed a tube 1 arranged axially of the cup and communicating at its ends with the axial openings in said plates. rFhese parts l, il, 1 may be soldered together or otherwise suitably connected. The plate la may be provided with a thickened portion 1e adjacent the lower end of tube 1c, which portion lc may be formed integral with or separate from plate la; or the tube. lThis portion l1 is internally threaded for engagement with a threaded nipple 8 which may be attached to a support 9 of any suitable kind. The nipple 8 may be connected by a pipe 8a with a compressed air or steam supply. W'

top plate lb is a spreader disk 2, the top of which should be about flush with the top edge of the cup l, and this disk should be of an exterior diameter slightly less than 1 hin the cup l and supported on the the interior diameter of the cup 1, so that an air or steam escape passage P will be left between the edge of the plate and the inner wall of the cup l. The spreader plate 2 is spaced from the top plate 1b to form a small air distributing chamber C, which directly communicates with the interior of the tube lc, and is adapted to distribute the air or steam entering the tube lc to the outlet P without lessening the pressure of the air or steam. rlhe spreader 2 is preferably stamped with depending lugs, 2a, which lugs will support the spreader 2 on the plate 1b and suitably space the spreader 2 from said plate. justed in the cup l, so that the space P will be of uniform extent throughout, it may be secured by any suitable means. As shown, screws 3 are passed through holes 2C in the spreader 2 and engage threaded apertures in the top plate lb. Preferably the holes 2c are of larger diameter than the shanks of the screws 3 so that after the spreader is placed on the plate l" it can be adjusted laterally on this plate until the passage P is uniform throughout, then can be tightened, thereby binding the spreader Q securely in position. The openings might be formed within the lugs 2a, so that the screws will pass through the spacing lugs. The lugs 2a might be used as means for fastening the disk by dropping solder into these hollow lugs, after the spreader is properly positioned, thereby securely attaching same to the ltop plate, also for regulating distance between 2 and l.

Supported. on and attached to the cup l is an internally threaded annulus l which is connected to the cup by vertically disposed bars 4a attached to the outer side of the After the spreader is properly avdy the screws 3k 4, as indicated in Fig. 4L. The tone of the whistle can be regulated by means of an adjustable plunger 6 arranged in the bell threaded for exact adjustment with inset holes to engage wrench for adjusting in the usual manner.,

Whistles have heretofore `been made with a cup such as l, and an annular opening such as P in its upper end, and the air was discharged directly intothe bottom oi" the cup, and could expand in the cup below the spreader and between the nipple 8 and the outlet passage P, and thus the pressure of the air at its entry into the cup and at the outlet therefrom would be varied or irregular. l prevent expansion oit the air in the cup below the passage P by conlining the air inthe cup to the small tube 1C, which is tapered with nozzle effect to give pressure right at opening at any crack, which is very muebless in diameter than the cup, and the air passes from the tube lc to the distributing chamber C and thence directly to the openingJ P in my invention, and thus the air or steam from the pipe 8a is transmitted without any expansion or diminution of pressure in the cup directly to the outlet P, and the air pressure is maintained at the passage P. But for the tube i@ the air from the nipple 8 would expand and lill the entire cup be'lore reaching the passage P; and the pressure would be lessened, and the tone would be correspondingly affected; this would be most noticeable'when the instrumentwas playing short staccato notes. l

r The spreader 2 can be very accurately positioned on the plate lb so that it will be truly centered within the cup l, and when positioned can be secured by the screws 8, or solder, or both, as described. After the spreader 2 is properly positioned and secured to the plate lb, the cup l is attached to the air supply nipple 8, and the bell 5 properly adjusted and secured. When air is admittedto the nipple 8 it flows directly without expansion through the tube l to chamber' C and thence to the passage P escaping between the cup and the lower end of the-bell and causing the bell to sound.

In my whistle the air or steam is confined to a small passage within the cup so that its pressure is maintained approximately the same' when it reaches the air outlet P as it does in the supply pipe 8a, as the large space in the cup exterior to the tube lC and around the plates la, lb, is closed and the air is not admitted thereto, and does not have to traverse the same in passing from pipea to the outlet P.'A

What I claim is:

l. A whistle having a cup and a bell; y

upper and lower plates in the cup, each having an opening; a tube between the plates connecting with-said openings; and means for connecting the lower end of the tube with an air or steam supply; a spreader in the upper end of the cup supported on vand spacedfrom the upper plate to disseminate air or steam passing through the tube between the spreader and the upper plate; and

means `for securing the spreader in position.

with an air orsteam supply; a spreader' in the upper end of the cup having lugs to support same on and space it from. the upper plate to disseminate air or steam passing throughv the tube between the spreader and the upper plate, and means Jror securing the spreader in position. l y

3. A, whistle having a cupy and a bell; upper and lower plates within the cup, each having an opening; a tube between the plates connecting with said openings; a spreader in the upper end of the cupv and supported on and spaced from the upper plate in the cup to disseminate or steam passing through the tube betweenV the spreader and the upper plate, said spreader having openings for the passage of retaining screws; screws passing through the opening` in the spreader and engaging the ies upper plate to fasten the spreader thereon,

said openings being slightly larger-in diameter than the shanlrs or' the screws, substantially as described.

e. A whistle havingy a cup` and a bell;

upper and lower plates in the cup, each having an opening, a'tube between the plates connectingwith said openings; means for connecting the/lower end of the tube with an air'or steam supply; a spreader in the upper end of the cup having lugs formed thereon to 'support same on and space it from the upper plate to disseminate air or steam passing through the tube'between the spreader and the upper plate; saidspreader having openings for the passage'ot retaining screws; and screws passing through the openings in the spreader and engaging the upper plate to fasten the spreader thereon,

substantially as described.

In, testimony that 1' 'claim the vNoRMaN e. BAKER;

foregoing as

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