US1440698A - Whistle - Google Patents

Description

Jan. 2, 1923.

1,440,698. v. c. RocHoLL.

WHISTLE.

FILED MAR.31.1922.

mmnnlaj *A V. C. Foclzall M INVENTOR.

- ,1 Tom-'Ex'.

Patented 2, l1923i VALENTINE o." economi, or roar WAYNE, INDIANA.

' 5 wHisrLE. I

i nppuationeieamrcn si, ieee. semi No. 543,357.

To azllfwlwm t may conc-em:

Be it known that I, VALENTINE CLQRO- oHoLL, a citizen of the United States residing at Fort Wayne, in the countyof Allen and State of Indiana, have invented new and useful Improvements inV Whistles, of

which the followin is a specication.

The invention re ates to whistles adapted gine. This failure to hear the whistle isde to the destruction of the forwardly pro]ect.A

ed sound waves caused by the lack of .resili ency of the air forwardly of the whistle. The resiliency of the air is destroyed by exhaust steam, burned gases, smoke and fog, which combination of articial andlnatural sound resisting elements, combined with the head resistance of the onrushingv locomotive has a tendency to and does destroy all forward sound waves, On a foggy or humid day the exhaust steam, burned gases and. smoke ejected from the stack of a locomotive do not rise quickly but often seem to travel directly toward the whistle. The resiliency of the air in front of the whistle isthereby destroyed andy the forward sound'waves of the whistle are instantly broken up or destroyed. Hence a person in front of the oncoming locomotive under the conditions just set forth will seldomhear the whistle when blown.

The object of my invention isl to provide a whistle by which the above mentioned dificulties shall 'be eliminated, and I accomplish the invention by a device having means to project the Sound waves upwardly from the whistle into the Vstrata of resilient air above that through whichthe whistle is travelling, in which stratathe sound waves will travel without obstruction.

In the accompanying ldrawings I have illustrated an embodiment of the invention in which Figure 1 is a perspective view of a whistle provided with the invention; Fig.- 2 a vertical central section of the same; Fig.

3 a bottom view of the bell; Fig-4 a .plan

view of the base with the guard thereon; Fig. 5 an elevational view. of the directing cone and Fig. 6 an elevational View of the f guard.

Referring to the embodiment ofthe invention illustrated in the drawings, 1 is the base of `the whistle of.usual construction and' mountedon the casing 2 of the'vvalve 3. I i

adapted to be operated by the leverl in the usual manner. Inv .the type of base. illustrated in the ldrawings theuid 4under pressure-enters the base and escapes through the annular space between the" plate -5 andthe I adjacent wall of thecup 'member 6 ofthe` base. The base illustrated in the drawings forms no part of my invention, hence it 1s unnecessary to further describe it. A guard" 7 is secured to or is integrally formed with the cup member 6. It flares outwardly from theupperjedge of the latter member,` the angle of inclination from the perpendicular being that which will best accomplish the y results yto, obtained, as hereinafter de scribed. i

The usual beu 8 is adjusfatiy Supported Aon the rod 9 suitably Secured in the base 1, the adjustment being in a vertical direction in order to regulate the elevation of the.

'lower end of the bell with respect to the base. The plane of the lower end of the bell is below the plane of the upper edge of the guard so that the guard shall protect the Y said edgefrom the rapid air currents and the exhaust steam 'and gases ejected from the stack ofa locomotive, when the whistle is used thereon. An .inverted cone-shaped sleeve 10 is secured to the exterior surface of the bell at a suitable point above the lower -end of the bell. The lower edge of the sleeve is featheredtoy prevent any obstruction to the sound waves at said edge. The outer fa-ce of the sleeve is concaved vertically, and the sleeve in cooperation ,with the guardl di-v rect the sound waves upwardly and outwardly. The guard l7 and the directing sleeve 10 are preferably made separately so that they may be attached to the base and bell of whistles already in use; but it is ap? parent that in new whistles made with the improvement, the guard may be formed integrally with the base and the directing sleeve in like manner may be formed integrally with the bell.

Since the directing Sleeve member and the guard cooperate todirect the sound waves producedv when the whistle is blown in an upward and outward direction, the waves los travel into an upper strata of air above that occupied `by the Huids ejected from the stack with. rlhe sound waves travel in theVY latter strata in all directions and a personahead ofthe whistle-may hear itas well as one behind it or att-either side'.

The slots l1 are-fomned in the lower portion of the guard .7 and provide a circulazK tion of airl over the upper edge of the guard,

and out through the slots. This is provided so that the Huid 'underpressure shall have free escape .and not bexaectedin any wa the base. l f

by air currents or pockets in the vicinity What 'l claim is: l. A whistle comprising a base, a bell supported on the base and cooperating means j on the bell and base for directing the sound waves produced, in anupwa-rd and outward direction.

2. 'A whistle comprising abaseQ-a bell supported on the base, a soundwave directin y member on the bell, andan annular guar reedeee f y on the base" adapted to cooperate with the i whose reslliency has: not been lnterfered f directlng member to cause thesound waves 25 produced when the whistle is'hlown to travel upwardly and outwardly fromthwhistle.

3. Awhistle comprising a base, an annular guard `on the u per ed e of thehase which flares'outwardly, a be supported on thebase and a member onthefhelll having its outerjace concaved verticali and adapted to direct'sound waves upwar` y. n

e. A whistle comprising a base, an annu lar outwardly flaring guard secured to the upper edge vof the base, a bell-adjustably supportedon the base, a sleeve' secured to f the: outer wall of thel.` bell having its outer1 face curved or concaved in a vertical direction, the sleeve and guard hei-ng adapted-to cooperate to direct upwardly and outwardly the sound wavesl produced by the whistle;

ln witness whereof` lv have hereunto snubscribed my 1922. f

, VALEN'llNEi C. RCHLL.

name this 30th day of lldarch,l

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