US585083A - Valve mechanism - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. H. I'. COOK. VALVE MEGHANISM.

No. 585,083. Patented June 22,1897.

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HERBERT F. COOK, `OF CLEVELAND, OHIO, ASSIGN OR OF ONE-HALF TO THE OTIS BROTHERS & COMPANY, OF NEV YORK, N. Y.

VALVE IVIECHANISM.

SPECIFICATION forming part of Letters Patent No. 585,083, dated .Tune 22, 1897.

Application filed January 6, 1896.

To all whom it may concern.'

Be it known that I, HERBERT F. CooK, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Valve Mechanism; 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 object of my invention is to provide novel valve mechanism for controlling and directing the liow of a fluid under pressure and also to so combine thc said valve mechanism with a cylinder and piston therein to be operated by the fluid that the piston will reciprocate in the cylinder automatically so long as the fluid under pressure is admitted to the valve mechanism.

The invention consists in the construction and combination of parts hereinafter described and claimed.

The invention is particularly adapted for use in operating an air-pump to be used to maintain the pressure in a beer-barrel; and I have in the drawings shown the air-pump and an operative connection between it and the piston which is to be operated by the iiuid. I do not intend, however, that the invention shall be Vlimited by the claims to this particular use.

In the drawings, Figurel is a central longitudinal section of an apparatus embodying my invention. Fig. 2 is a central longitudinal section of the air-pump, which when used is placed upon the part of the apparatus shown in Fig. l. Fig. 3 is a transverse sectional view on line 3 3 of Fig. l.

Referring to the parts by letters and iigures, A represents a cylindrical valve-casing having the discharge-opening a.

B represents a hollow cylinder secured concentrically within the casing, and b an inletpipe connected with said cyclinder, through which the fluid is admitted to the apparatus.

a2 and a3 represent two ports formed in the valve-casing, but opening into the cylinder B,which ports are located, respectively, above and below the inlet-pipe b.

C represents a tubular valve which passes concentrically through the cylinder B. It is Serial No. 574,535. (No model.)

provided near its ends, respectively, with the pistons c o, which fit and move in the valvecasing. It is also provided with the two pistons c2 o3, which fit and move in the cylinder B. 5 5

D represents a tubular supplemental valve which passes through the valve C and is independentlymovabletherein. Insidethevalve C and around the supplemental valve are four packing-rings F, held in place by suitable 6o means, whereby the space within the valve C around the supplemental valve 'is divided into three chambers o4 c5 o6. The middle packing-rings are so placed that whatever be the position of the valve the duid entering the cylinder B from the pipe b shall enter the middle chamber c5 directly through the opening c3. Openings c7 o8 o9 are formed in the walls of the valve C, leading, respectively, to the said three chambers.

The supplemental valve D has openings in its upper and lower ends within the valvecasing. Preferably the lower end of the valvetube D is open, and one or more openings d are formed at its upper end. The supplemental valve D, or something attached thereto, projects out through a packed joint in the end of the valve-casing, whereby said supplemental valve may be moved by means outside of said casing.

In the supplemental valve is a transverse partition d', which prevents direct communication between the upper andl lower ends thereof. An opening d2 is formed in said valve above the partition, and another opening d3 is formed therein below the partition. In order to be able to most conveniently connect the upper port a2 with the lower end of the cylinder E and the lower port d3 With the upper end of said cylinder-obviously the cheap- 9o est `construction-it is necessary to have the opening d3 above the opening d2. The partition d is therefore constructed so that its general direction is oblique to the axis of the tube and to a horizontal plane across it. In 9 5 the exact construction shown the partition extends transversely half the distance, then vertically as far as necessary, and then transversely the other half of the distance across the tube.

The packing-rings F and the openings d2 d3 are so placed that when the supplemental IOO valve is moved so that one of the said openings is in the middle chamber ci the other one is in one or the other of the chambers c'L c6, and that these conditions will remain unchanged after the resulting movement of the valve.

The ports a2 a3 are so placed that when the valve is up the port a2 is between the two piston-heads c2 c3, and the other port a3 is below the piston c3; but when the valve is down the port (t3 is between the said piston, while the port CL2 is above the piston a2.

E represen ts a cylinder secured above and concentric with the valve-casing, and G a piston movable therein. A rod d, which is secured to the supplemental valve D,projects into the cylinder E, and there is a telescoping Connection between it and the piston, whereby the latter may move independently of said rod. Shoulders are provided upon said parts which at certain points in the movement of the piston engage with each other, whereby both move together. This constructioirresnlts in the automatic movement of the supplemental valve at the proper time to cause the valve C to be moved so as to change the direction of the fluid. In the specific construction shown the piston-rod g, which projects out of the upper end of the cylinder, is provided at its lower end with an axial opening g', into which the rod d4 projects. On the upper end of the rod is an enlargement or head d5, which will be engaged by a plug g2 in the lower end of the opening g, and the opening g is of such length that at the proper time the end of the rod will be struck by the end of the opening.

H represents the cylinder of an air-pump of any suitable construction, and h its piston, which is attached to the upper end of the piston-rod g. It is not essential that an air-pump be used, nor is it material that the movement of the piston-rod shall operate the piston of any other pump. It may be connected with or communicate motion to any sort of a device adapted to receive motion therefrom.

The valve C, as shown, is constructed of a novel combination of parts which while not essential to the invention as broadly claimed is nevertheless new and particularly well adapted to produce the result sought. In the construction shown the valve includes a tube l, having thereon the annular fianges 2 and 3. Inside of this tube are placed the sleeves 4, 5, and each of which must be flanged internally and may be flanged externally at both ends. The packing-disks F are placed between the ends of the tubes 4, 5, and G. The glands S and 9 screw into the ends of the tube l against packing-disks F, placed between said glands and the ends of the sleeves. The edges of these packing-disks bear against the inside of tube 1 and the outside of the supplemental valve, thereby separating the chambers c c5 cG from each other. A sleeve l0, having external annular flanges at its ends, is placed outside of the tube l. A packing-disk ll is placed between the lower flange thereon and the fiange 2 on tube l. Another packing-disk l2 is placed around the tube l above the sleeve, and a fianged collar 13, which is screwed onto the upper end of tube l, holds the parts in the described relation to each other. Similar disks l-t and l5, a similar sleeve 16, and a fianged collar 17 are in like manner secured upon the lower end of tube 1.

The operation of so much of the apparatus as involves my invention, as embraced in the claims, is as follows: Then the parts are in the relative positions shown, the Iiuid enters from pipe l) into the cylinder B between the pistons c2 c3. Some of it passes through the opening o8 into chamber c, thence through opening cl3 into the supplemental valve-tube below partition CW, and thence into the valvecasing below the piston c, whereby the valve C is moved up and is held up. Another part of the fluid in cylinder I3 between the pistons c2 c3 enters port a2 and passes thence into the cylinderE below the piston G, whereupon the piston begins and continues its upward movement. The fluid which was in the valve-casing above the piston c entered the opening d in the supplemental valve, passed through the opening d2 into chamber c, out through opening c into the cylinder I3, under the lower end thereof into the valve-casing between pistons c d, and out of the exhaustopening a. The iiuid from the top of the cylinder E passes through pipe .I and port a3 to the lower part of cylinder B below piston c3 and thence out to exhaust-opening a, as just described. Vhen the piston G has about reached its highest position, the plug g2 engages with the head (Z5 and draws the supplemental valve up, so that the opening cl2 is in the chamber c5 and the opening d3 is in the chamber c4. The fiuid from chamber c5 enters the supplemental valve above the partition d and passes out through the opening l into the valve-casing above valve C, which thereupon moves down, the fluid below said valve D passing thence into chamber c4 and into valve-casing between the pistone c c through the opening c7. The downward movement of the valve carries the pistons e203 down past the ports a2 a3, respectively, whereupon the fluid between said pistons enters port a3, passing thence through pipe J to the cylinder E above the piston G, while the iluid below said piston enters port a2, passing thence into valve-casing and to the exhaust. Vhen the piston G nearly reaches its lowest point, the supplemental valve is moved down, making the connection first explained, whereupon the valve C moves to the position shown.

The apparatus in its entirety, as shown, is intended for use as a beer-pump, but the airpump might be omitted and any other device suitable to receive its motion from the piston G might be substituted.

IOO

IIO

It is intended to connect the apparatus, as shown, with a pipe for delivering the water under pressure-in other words, to use water as the operating fiuid; but steam or any other suitable fluid might be used with the apparatus, as shown, or when only slightly modified in merely mechanical features.

The movement of the valve in the apparatus shown directs water to either the upper or lower end of the cylinder E, and the move- `ment of the piston automatically moves the supplemental valve; but the supplemental valve might be operated in any other suitable manner, and the water entering the ports CL2 a3 might be carried to any desired point or suitable apparatus.

Having described my invention, I claim* 1. The combination of a valve-casing A having an exhaust-opening, a tubular cylinder B secured Within said casing and having two ports a2 a3, a supply-pipe connected with said cylinder between said ports, a tubular valve C having, first, two pistons near its ends which are fitted to and movable in the valve-casing, and, second, two other pistons which are fitted to and movable in the cylinder B, a tubular supplemental valve D independently movable in the valve C, and having, first, openings near its ends into the valve-casing, second, a transverse partition, and, third, two openings respectively above and below said partition, four packing-rings secured to the valve C around the supplemental valve D, thereby dividing the space into three chambers which have the openings c7 o8 o9, and mechanism for moving the supplemental valve, substantially as and for the purpose specified.

2. The combination of a valve-casing A having an exhaust-opening, a tubular cylinder B secured within said casing and having pendently movable in the valve C, and hav.

ing, first, openings near its ends into the valve-casing, second, an oblique transverse partition, and, third, two openings respectively above and below said partition, four packing-rings secured to the valve C around the supplemental valve D, thereby dividing the space into three chambers which have the openings c'Y o8 o9, a ,cylinder E which is connected at its lower and upper ends respectively with the ports a2 a3, a piston G movable in said cylinder, its piston-rod, a rod d4 secured to the supplemental valve, entering a hole in the piston-rod, and shoulders on said two rods, substantially as and for the purpose specified.

3. A valve consisting of the tubular cylinder 1 having the external fianges 2 and 3, three internally-placed sleeves et, 5 and 6, having at their ends intern al annnlariianges, the glands 8 and 9, and the packing-rings F, the two external sleeves 10, 16 having annular flanges at their outer ends, the fianged collars 13 and 17, and the packing-rings 11, 12, llt and 15, the said cylinders and sleeves having the holes o7 o8 e9, substantially as and for the purpose specified.

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

HERBERT F. COOK.

Vtitnesses:

E. L. THURsToN, L. L. GRrswoLD.

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