US1518107A - Fluid-operated whistle valve - Google Patents

Description

C. D. RAFFERTY FLUID OPERATED WHISTLE VAL' Filed Oct. 4, 1923 Patented Dec. 2, 1924.

LEEMQ? CHARLES I). RAFFEBTY, 0F SAULT STE. 'lrIARIE, ONTARIO, CANADA.

FLUID-OPERATED WHISTLE VALVE. f

Application filed October 4, 1923. Serial No. 666,527.

To all whom it may canoe m:

Be it known that 1, CHARLES D. RAF- FERTY, a citizen of the United States, residing at Sault Ste. Marie, in the Province of Ontario and Dominion of Canada, have invented certain new and useful Improvements in Fluid-Operated Whistle Valves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The purpose of the present invention 1s the provision of a valve adapted to be operated by compressed air, steam or other fluid, whereby to unseat the valve of a steam whistle, thereby obviating exposed connecting means, such as a cord, chain or the like.

Other objects and advantages will be apparent and suggest themselves as the nature of the invention is understood.

While the drawings illustrate an embodiment of the invention it is to be understood that in adapting the same to meet different conditions and requirements, various changes in the form, proportion and minor details of construction may be resorted to without departing from the spirit of the in vention.

Referring to the accompanying drawings forming a part of the application:

Figure 1 is a vertical central sectional view of a whistle and valve mechanism embodying the invention,

Figure 2 is a horizontal section on the line 22 of Figure 1, looking in the direction of the arrows,

Figure 3 is a horizontal section on the line 33 of Figure 1, looking in the direction designated by the arrows,

Figure d is a sectional 4- 1 of Figure 1, and

Figure 5 is a detail sectional view on the line 5-5 of Figure 1.

Corresponding and like parts are referred to in the following description and designated in the several views of the drawings by like reference characters.

The body of the whistle is designated by the numeral 1 and may be of any preferred construction. The numeral 2 designates the bowl associated with the body 1 and forming a part of the whistle. A neck 3 depends from the bowl 2 and terminates in a coupling end to be attached to a steam boiler or other means for supplying an operating detail on the line fluid for sounding the Whistle when it is required to operate the same. A valve 4:W1i3l'1- in the neck 3, serves to normally cut off the supply of fluid to the whistle and this valve opens downwardly and closes upwardly.

A fluid controlled valve operating mechanism is associated with the whistle to effect an unseating of the valve 1 when it is required to sound the whistle. In the prefer able arrangement, the valve operating mechanism is located within the bowl 2 and com prises a cylinder 5 having a reduced portion 6 which is threaded into the upper end of the neck 3. The cylinder 5 is of such relative diameter and arrangement as to form an annular space 7 through which the steam, compressed air or other fluid medium passes when the whistle is in operation. A cap 8 closes the upper end of the cylinder 5 and is formed with an outer flange 9 which overhangs the annular space 7 and provides a constricted outlet for the fluid medium whereby the whistle is operated. A supply pipe 10 connects with the upper portion of the cylinder 5 and a vent 11 connects with the lower portion of the cylinder. The pipe 10 may connect with a tank containing compressed air, or with a steam boiler, and is provided in its length with a valve, not shown, which in one position admits the steam or compressed air into the upper portion of the cylinder and which in another position establishes communication between the upper portion of the cylinder and the atmosphere, whereby to relieve the upper portion of the cylinder of fluid pressure to admit of the automatic seating of the valve 4. It will be obvious that the pressure in the boiler will hold valve 4 to its seat and as the valve engages the lower end of the stem 13 the piston 12 will be held in the intermediate position shown in Figure 1 until sufficient pressure be exerted thereon through pipe 10 to overcome the boiler pressure and unseat the valve as hereinafter stated. The stem 13 of the piston 12 obtains a close fit Within an axial opening of the reduced portion 6 and projects beyond the latter to engage the valve 4. When the piston 12 is depressed by fluid pressure entering the upper portion of the cylinder through the inlet 10, the valve 1 is unseated, and fluid pressure entering the neck 3 and passing through the bowl 2, operates the whistle in a manner well understood. The reduced portion 6 of the cylinder has passages 14 formed therein,

through which the fluid medium from the neck 3 enters the bowl 2 when the valve l is unseated. As indicated most clearly in Figure 4, the passages let are grouped about the axial opening of the part 6 in which the stem 13 operates.

Whatis claimed is:

1. A whistle of the character specified, comprising a bowl having a neck, a body carried by the bowl, a self-closing valve in said neck, a cylinder within the bowl spaced from its side wall, a piston within the cylinder and having a stem adapted to engage the self-closing valve and effect an unseating thereof, a pipe extending through the bowl to the cylinder for supplying fluid pressure to an end portion of the cylinder for posi tively actuating the piston therein and a vent pipe extending through the bowl to the cylinder.

2. In a Whistle of the character specified, a boWl having a neck, a body carried by the bowl, a self-closing valve within the neck, a cylinder Within the bowl spaced at a portion thereof from its side Wall to provide an operating fluid outlet and having a reduced portion coupled to said neck and provided with a passage for the whistle operating fluid, said cylinder having a fluid pressure inlet pipe and a vent pipe in communication therewith and extending through the bowl, and a piston in the cylinder having a stem passing through the reduced portion thereof for actuating the valve of the whistle.

In testimony whereof I my signature 35 in presence of two witnesses.

CHARLES D. RAFFERTY. Witnesses Ri-IEA KAUPP, H. J. HERROLD.

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