US735549A - Suction-valve for compressors. - Google Patents

Description

No. 735,549. PATENTEDAUG. 4, 1903.

E. A. MENKING. SUCTION VALVE POR GOMPRESSORS.

APPLICATION FILED MAR. 6, 1903. N0 MODEL.

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UNITED STATES Patented August 4, 1903.

PATENT OFFICE.

ERNEST A.'MENKING, OFPITTSBURG, PENNSYLVANIA.V

SPECIFICATION forming part lof Letters Patent No.. 735,549, dated August 4, 1903. Appnoanon inea Marche, 190s.` semmai-16,500. (No modem To a/ZZ whom, 25 may concern:

Be it known that I, ERNEST A..MENK1NG, a citizen of the United States, and a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have inventedl a new and Improved Suction-Valve for Compressors, of which the following is a full, clear, and exact description.

This invention relates to valves; and it consists, substantially, in the improvements hereinafter particularly described.

The invention has reference more especially to spring-'controlled puppet or suction valves, such, for instance, as are employed in connection with cylinders of air, gas, or other compressors or the like; and the principal object of the-'invention is to provide a valve structure of this character which is effective in operation and which may also be regulated with facility, whereby no hammering or noises are produced by the val ve when the same is in use.

Afurther object is to provide a spring-controlled puppet or suction valve which is constructed of few parts, which are easily and quickly assembled or organized for operation, and also to provide means whereby access may be readily had to the valve and its accessories either for the purposes of repair or other attention thereto.

A further object of the invention is to provide simplied and effective yieldable devices for normally maintaining the valve upon its seat and also to provide a puppet or suction Valve structure for the purposes named which possesses certain advantages over manyother structures of a like character heretofore devised. v Y y A still further object is to overcome several objections common to many like structures at present in use for similar purposes and also to provide a valve structureof this general character having the capacity forl long and continued service, besides being comparatively cheap to manufacture as welll as readily adapted to operative position within the compressor or other cylinder without liability to leakage or other defects.

The above and additional advantages are attained by means substantially such as are illustrated in the accompanying drawings, in which- Figure l is a part longitudinal sectional elevation of a compression-cylinder, showing my improved puppet or suction valve structure as employed in connection with ports of said cylinder. Fig. 2 is an enlarged vertical part-sectional elevation in detail of my improved puppet or suction valve structure, said view indicating more clearly the construction and organization of the several elements or parts constituting the structure. Fig. 3 is an enlarged view in side elevation of the cage or housing for the `valve and its several adj uncts, the separable parts or sections constituting the said cage or housing being shown insegregated relation. Fig. 4: is a top or plan view of the construction shown` in Fig. 2, with the top plate of the compressioncylinder removed. Fig.4 5 is a horizontal sectional plan view takenon the line 5 5 in Fig. 2,said View being minus thecontrolling-spring for the valve and showing the pocket or seat for the lower end of the said spring; and Fig. 6 is an enlarged side view of the valve itself,

. together with its stem and head thereon.

Before proceeding with a more detailed description itmay be stated that my improved puppet or suction valve'structure for com- Y pressors and the like comprises a valve and a seat therefor, each of a certain preferred construction, combined with a cage or housing for the valve,together with the accessories and controllingdevices for the latter, said cage or housing being of special construction or embodiment, and the said accessories and controlling devices being also specially constructed and organized, as will hereinafter more fully appear.

It may-be statedv that while I have herein `represented my improvements in a certain preferred embodiment or organization I am not limited to the precise details thereof in practice, since immaterial changes may be resorted to coming within `the scope of my invention.

Specific reference being had to the several parts of the drawings bythe designating characters marked thereon, l represents the outer wall or structure of an air, gas, or other compressor formed with the usual chamber 2, in which works or reciprocates a piston 3, having the usual operating-rod 4., connected to any suitable motive power. The accompany- IOO ing illustration, Fig. 1, is simply employed for the purpose of showing the adaptation and operation of my improved valve structure. Formed or otherwise provided in the upper part of the casing of the compressor are suitable ports 5 5, connected by a passage 6, one of my improved valve structures being located above each of said ports and held or supported in position in a suitable opening 7, formed in the upper wall 8 of the compressor, said openings each being provided with a removable cover or top plate 9 for preventing dirt and other objectionable substances from gaining access to the interior of the valve structure, said covers or top plates also serving to retain the structure in rigid position within the support therefor, substantially as will be more fully explained hereinafter. The compressor itself is without other special features of construction, it being observed that a pipe 10 leads upwardly from the passage 6 and which may be connected to any suitable source of supply of air, gas, or similar fluid.

My improved valve structure comprises a ring 11, (see Fig. 2,) located at the lower part thereof, as shown, the said ring being snugly Iitted within the sides, forming or constituting, as may be said, one of the ports 5 already referred to. The verticalcircular portion 12 of the said ring 11 is screw-threaded internally at 13 and is formed internally with an annular' ledge or shoulder 14, while the lower edge of the conical portion of the ring is preferably beveled or flared outwardly at 15 to constitute or form a seat for the disk or valve 16, which is beveled at 17 in correspondence therewith, the said valve being formed or provided centrally of the upper surface thereof with an upwardly-projecting stem 18, said stem being provided at the upper end thereof with an integral cap or head 19, as shown. Surrounding or inclosing the said valve-stem 18 is a cage or housing 20, which, as indicated in Figs. 2 and 3, is practically skeleton-like in construction,and is constituted,preferably,of two separable sections 21 21, each being substantially semicylindrical in plan view and each of said sections being provided at the upper and lower ends thereof, respectively, with semicylindrical extensions 22 and 23, said extensions being so constructed on their external surfaces as to present continuous screw- threads 24 and 25 when the two said sections 21 of the cage or housing are properly assembled in place. Each of the said sections 2l is also provided at a suitable distance from the upper and lowerparts thereof, respectively, with semicylindrical projections 26 and 27, which when the cage-sections are united present continuous ring-like portions surrounding the said cage or housing. The inner adjacent surfaces of the meeting p0rtions 28 and 29 of the said sections 2l of the cage or housing are provided, respectively, with a recess 30 and a projection 3l, the one receiving the other when the two cage-sections are properly united, and said sections being thereby held in proper position relatively to each other without liability to displacement thereof. Each of the cage-sections 21 is also provided interiorly with a semicylindrical support 32, each having in the upper surface thereof a semicylindrical recess 33, and when the said cage-sections are united in proper relationship to each other the said supports 32 are thereby brought together, and the sides of the said recesses unite in forming a continuous annular pocket or seat for the lower end of a coil-spring 34, (see Fig. 2,) through the medium of which the valve is controlled or normally maintained tightly upon its seat. As will be observed, each of the said sections 21 of the cage or housing for my improved valve structure is also provided interiorly with a semicylindrical vertical extension 35, the two said extensions uniting in the formation of a vertical guide for the accommodation and working of the said valvestem 18, as shown. The said spring 34 is of suitable power or strength and the upper coil thereof is received in an annular seat or bearing 36, formed in the under side of a ring 37, which is slipped in place over the head 19 ofthe valve-stem, it being observed that the inner diameter of said ring is considerably in excess ofthe external diameter of the said valvestem. In order t0 maintain the said ring 37 in place as well as to obtain the desired effects of the expansive force of the spring, I employ a split ring 38, or rather a ring made in two sections which are provided with pendent portions 39, fitting snugly in the annular space formed intermediate of the adjacent surface portions of the valve-stem and the said ring 37. The pressure of the spring 34 forces both the ring 37 and the split or divided ring 38 upwardly, so that a compact relationship exists between the same and the valvehead, and it will be apparent that when the parts or elements are united, ashorein explained, the most eective results are derived therefrom.

Fitted to the upper extensions 22 of the sections of the cage or housing of my improved valve structure is a ring 40, which is screwthreaded internally at 41 to t the threads 24 of the said extensions, said ring being also formed internally with an annular shoulder 42, which rests upon the upper edge of the said extensions.

In assembling or organizing the several elements or parts of my improved valve structure it may be stated that the valve-stem 18 of the Valve is inserted upwardly through the ring ll from beneath, so as to cause the valve to be properly located upon the seat 15 therefor, whereupon the two halvesor sections 2l 2l of the cage or housing 2O are brought together, so that the threads on the extensions 22 and 23 thereof are brought into continuity and also so that the internal vertical extensions thereof are brought in proper position on opposite sides of the valve-stem, by

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which the latter will be properly guided in the movements of the valve. The said ring 1l is then screwed upon the united extensions 23 of the said sections 21, as indicated in Fig. 2, whereupon the spring 34 is slipped down over the inner extensions or valveguides 35, so as to have the lower coil thereof properly located in the annular pocket or seat therefor formed in the upper surface of the semicylindrical supports 32. 'After this assemblage of the parts or elements specified the said ring 37 is slipped over the valve-head, so as to rest upon the upper coil ot' the spring 34 in the manner alreadyeXplained, and then the split or divided ring 38 is also applied to the valve-stem beneath the head 19 thereof. From this description it is believed that the construction and organization of my improved structure will be fully understood, as well also as the operation thereof, it being stated, however, that subsequent to theapplication or fitting in place of the said ring 38 the said ring 40 is screwed upon the united extensions 22 of the sections 2l of the cage or housing, after which the cover or top plate 9 may be secured in place, as herein shown and for the f particular conditions under which it may be claim as new and desire to secure by Letters Patent- A valve structure for compressors and the,

like, comprising an internally-threaded ring having a valve-seat, a valve having a stem provided with a head, an inclosing cage constructed of substantially semicylindrical sections, each formed externally with semicylindrical projections, which are flush with said ring, and each also having a semicylindrical internal extension, the two latter unitingY to form a guide for the stem, a spring surrounding the guide, said guide having recessed portions constituting a bearing for one end of the spring, and a bearing for the other end of said spring, adapted to be applied over said head, said cage-sections having another internally-threaded ring surrounding the same adjacent the head, and each section having a semicylindrical threaded extension at each end to receive said first-named ring and the ring last named.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ERNEST A. MENKING.

Witnesses:

J. H. SoRG, WM. COLTERYAHN, J r.

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