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Publication numberUS477945 A
Publication typeGrant
Publication dateJun 28, 1892
Publication numberUS 477945 A, US 477945A, US-A-477945, US477945 A, US477945A
InventorsErastus B. Kunkle
Original AssigneeHimself and William D
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Erastus b
US 477945 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)



No. 477,945. Patented June 28, 1892.

a, k Q Q Q Q H Q. 3




SPECIFICATION forming part of Letters Patent No. 477,945, dated June 28, 1892.

Application filed March 26, 1892.

To all whom, it may concern:

Be it known that I, ERASTUS l3. KUNKLE, of Fort \Vayne, in the county of Allen and State of Indiana, have invented a new and Improved Safety-Valve and Muflier, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved safety-valve, combined with a muffler, which is simple and durable in construction, permits a ready escape of steam, and is arranged to completely mnfl'le the escaping steam to break it up before it reaches the atmosphere.

The invention consists principally of a semispherieal perforated cap formed with a bottom having inlet-ports at or near its outer edge and a curved lip formed on the inside of the cap above the inlet-ports to direct the steam to the middle of the cap.

The invention also consists of certain parts and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is a sectional side elevation of the improvement on the line 1 1 of Fig. 2, and Fig. 2 is a sectional plan view of the improvement on the line 2 2 of Fig. 1.

The safety-valve on which the improved mufller is applied is similar in construction to the one shown and described in the Letters Patent of the United States No. 446,757, granted to me February 17, 1891. This safetyvalve is provided with a valve-body A, formed near its upper end with a valve-seat A, on which is seated the seat part B of the cupvalve B, extending into the body A, and held in a lowermost position by helicoidal springs O, the tension of which is regulated by a screw D, screwing in a hub E, attached to the semispherical cap F at the center thereof. The semi-spherical cap F is provided in its wall with perforations F, and is also formed with a lower cylindrical extension F screwing on a flange A arranged vertically on the valvebodyA on the outside of the seat A. The hub E is formed at its lower inner end with a disk, forming a bottom G for the semi-spherical cap Serial No. 426,552. No model.)

F. The outer edge of the bottom G does not extend close to the wall of the cap F, so that a passageway H is formed between the wall of the cap and the edge of the disk or bottom G for the passage of the steam passing between the seats A and B at the time the cup valve B is lifted off the seat by excessive pressure. The bottom G is formed with a downwardly-extending annular flange G, fitted upon an annular flange B of the cup-valve l3, as is plainly illustrated in Fig. 1. Directly below the annular flange I3 is arranged a ring I, screwing on an interior thread of the flange A and serving to regulate the steam passing between the seats to the passage-ways ll. In order to form a connection with the interiorof the cup-valve B, the cylindrical part F of the cap F is formed with inwardly-cxtending lugs F bearing against the outer surface of the annular flange G, as will be readily understood by reference to Figs. 1 and 2. In each of the lugs F is bored an aperture F", which registers with a corresponding aperture G formed in the flange G. Thus any steam passing into the cup-valve B can readily escape through the registering apertures G and F" to the outside. Above the passage-way H and on the inside of the cap F is formed an annular curved lip .I, extending upward and inward above the bottom G, as is plainlyillustrated in the drawings. This lip J serves to guide the steam passing through the passage-way H to the center or middle part of the cap Fthat is, toward the hub Fso that the steam is mu ffled in the middle of the cap before it passes upward and outward through the perforations F in the semi-spherical wall of the cap F. The hub E is preferably curved upward and outward in the shape of an inverted cone, as is plainly illustrated in F g. 1. It will be seen that when the cup-valve B is lifted off the seat A by excessive steam-pressure, then the sharp noisily-escaping steam, after separating the valve-seats A B, is passed through a narrow contracted passage-Way H until it comes in contact with the annular lip J, whereupon the steam begins to expand in the cap F, as its course is changed by the curved annular lip to the center of the cap, and the sharp shrill noise of the steam is completely expanded, m uftled, and driven up before the steam passes IOO all

upward and through the perforations F in the cap F on its way to the atmosphere. After the steam passes through the perforations the noise is reduced so as to be hardly perceptible.

It is understood that when the steam strikes the annular lip J it is deflected toward the center of the cap F, and at the same time upward,

so that the steam has sufficient space within the cap to roll up, and the several currents are mixed, whereby the steam is completely broken up in small particles, thereby reducing the sharp noise of the steam at the time it issues through the perforations F. It will further be seen that by t-heespecial construction of the cap F and bottom G,with its flange G, a connection is had from the outside with the interior of the cup-valve B, so as to take up all back pressure on the valve. The ring I is adjusted from the outside, as described in the patent above referred to and partly shown in Fig. 2.

Having thus described my invention, I claim as new and desire to secure by Letters, Patent- 1. A safety-valve and m nffler provided with v a semi-spherical perforated cap having inlet passage-ways and an annular lip formed on. the inside of the cap above the passage-ways to direct the steam to the middle of the cap,. substantially as shown and described.

2. A safety-valve and muflier provided with g a perforated semi-spherical cap formed with a bottom having passage-ways near the edges thereof and an annularcurved lip formed on the inside of the cap above the passage-ways and bottom to direct the steam toward the center of the cap before it passes upward and through the perforation to the outer air, substantially as shown and described.

3. A safety-valve and muffler comprisinga perforated semi-spherical cap formed with an annular curved lip, a hub secured in the middle of the said cap, and a disk attached to the said hub and forming a bottom for the said cap, the said disk forming at its outer edge, with the said cap, a passage-way for the steam, and the said disk being located below the said annular lip, substantially as shown and described.

4. In a safety-valve and muffler, the combination,with a valve-body and a spring-pressed cup-valve held in the said valve-body and formed with an annular flange, a perforated cap secured to the said valve-bod y and formed with an inwardly and upwardly extending curved annular lip, a hub securedto the said cap in the center thereof, a disk secured or formed on the lower end of the said hub and forming passage-ways with the said cap below the said annular lip, and an annular flange extending downward from the said disk and engaging the annular flange of the said cup-valve, the said flange being formed with apertures registering with apertures in lugs formed on the inside of the said cap, substantially as shown and described.

ERASTUS B. KUN-KLE. Witnesses:


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US5136663 *Dec 22, 1990Aug 4, 1992Matsushita Electric Industrial Co., Ltd.Vector quantization image processing apparatus
Cooperative ClassificationF01N1/165