US1196862A - Reducing-valve. - Google Patents

Description

'R. W. E. HAYES.

nzoucms VALVE. APPLICATION FILED SEPT- 24, l9l5.

l 1 96,862 Patented Sept. 5, 1916.

2 SHEETS-SHEET I nqw. E. HAYES;

REDUCING VALVE.

APPLICATION FILED SEPT-24,1915.

11 96,862 Patented Sept. 5, 1916.

2 SHEETS-SHEET 2.

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RALPH HAYES, OF GALVA, ILLINOIS, ASSIGNOR F ONE-HALF T0 HAYES PUMP a PLANTER COMPANY, OF GALVA, ILLINOIS, A. CORPORATION OF ILLINOIS.

REDUCING-VALVE.

Specification of Letters Patent Patented Sept. 55,

Application filed September 24, 1915. Serial No. 52,382.

To all whom it may concern:

Be it known that I, RALPH W. E. HAYES,

a citizen of the United States, residing at Galva, in the county of Henry and State of Illinois, have invented certain new and useful Improvements in Reducing-Valves, of:

which the following is a specification.

This valve is intended primarily, though not exclusively, for use in connection with power spraying apparatus in which it is desirable to operate the engine and pump mechanism to a pressure capacity slightly inexcess of that desired for spraying purposes,

in order that an excess margin of power may be available at all times, sure of the spraying apparatus will always remain substantially constant and never fall below the desired degree.

The relief valve of the present invention is designed with a view of affording convenient means forquickly and certainly opening the valve when not in use to permit the passage of liquid without imposing a material pressure upon the engine and pump, and of such a nature that the valve elements may again be thrown into operative relation without readjustment of spring tension or other delicate manipulation.

The invention further relates to the means provided for quickly and easily assembling or disassembling the valve structure to per:

mit cleaning or replacement of parts, and

to the general structure and arrangement of the valve as a whole.

The invention further consists in the, features of construction and combinations of' parts hereinafter described and claimed.

In the drawings: Figure 1 is front elevation of the valve in its preferred form in working condition; Fig. 2 is a sectional elevation at right angles to the plane of Fig. 1, showing the valve in its inoperative position; Fig. 3 is a top view of the valve seat of Figs. 1 and 2; Fig. 4 is a perspective view of the cam block and lever for releasing the valve member from operative position; Fig. 5 is a front elevation of modified form of valve in its working condition; Fig. 6 is a sectional elevation'of the valve of Fig. 5 at right angles to the plane of Fig. 5, showing I the valve in its inoperative position; and I Fig. 7is a top or so that the pres-' casing, and

1 crating by th ofthe rod, The spring at'its upper end of a casing 7 having an intake nipple 8, and an I outlet nipple 9, which nipples have threaded thereinto the inlet and outlet pipes 10 andll respectively, arranged at right anglesto one another. The bore of thein lpple 8 1s threadedto receive 'a' valve seat .12 somewhat enlarged at its upper end 13, and. provided around its upper margin with up standing lugs 14 which are adapted to center a ball valve 15 which occupies a plane coincident withv the center of the discharge pipe 11.' j J The casing 'i afiords a valve chamber 16 which. is closed at its upper and by means of'a closing-cap l7,'which enters an annular recess 18 in thelupper surface of the valve bears against a leather washer 19 entered insaid recess. The partsare held "inv sealed relation by-means of companion bolts 20 WlllClI areenteredthrough companion lugs '21 and 22 on the valve casing and closing'cap respectively, the bolts being tightened-by-m'eansf of nuts 23 which bear against the upper lugs 22.

The closing cap 17 is provided with a bore 24 which furnishesa mounting for a pressure rod 25 which, when the partsare in opposition, bears against the ball valve and serves to hold" the same' under spring tension against the ball valve to prevent-the escape of spraying solution or: other liquid, except by lifting theuball against pressure imparted by'the'rod. 1 The spring tension is afforded by means of a coil spring 26 which bears against acam block 27 rigidly secured readingor otherwise to the upper end bears against a disk 28 which furnishes a socket 29 for the rounded end 30'of an adjusting screw 31 threaded through the head end 32'of'an arm 33 upstanding from the cap block 17.

The projectingupper end 34 of the adjusting screw is square to receive a wrench or other tool, and the parts are held in position for adjustment by means of a lock nut 35. The cam block 27 is provided on its under side with a diagonally extending wedge-shaped cam projection 36 which normally enters a cross-cut trough-shaped cam recess 37 in the upper face of the closing block 17. The cam head 27 is provided at one side with an outwardly projecting hand the cam head from the position shown in The valve relieving the ball from pressure and permitting it to rise and allow a practically unimpeded "circulation of spraying solution or other liquid. In order to provide a suitable bearing for the rod 25, a bushing 39 is entered into the under face of the cap block 17, in register with the bore therein, as shown in Fig. 2.

oerigs 5; e, and 7 is quite similar to that previously described, 'ex- I cept in respect to the means provided for retracting the pressure rod. It consists in 20 a valve casing provided with inlet and discharge nipples 41 and 42 to receive the inlet and discharge pipes 43 and 44 respectively. The valve seat 45 and ball valve 46 are substantially the same as the corresponding elements previously described. cap block 47 is secured in' place by means of bolts 48 entered through lugs 49 and 50 on the cap block and valve casing re-' spectively, and essentially like those previously described. A pressure rod 51 entered tlirough a bushing 52 ser ves, when the valve is in operation, to holdthe ball under spring tension against its seat. A spring 53 sur rounds the rod, and at its lower end" bears against a diskn54held in place byacross pin 1 55 entered,througl1 the ma; .Theupper end of the springfbears against atraveli'ng disk 56 provided at one side near 57=Which is entered into a vertica elongated slot 58 in an upstanding arm 59 w ich rsprings from the cap block '4? audit m1 ates at its'rupper through square 11 der face of the overhanging headidt), the

relation of the' parts being; sue that, when the adjusting screw isturiied hetraveling disk being held against rota onwill move up and down to regulate theicompressionof the spring. The upper end of the pressure rod is entered through a cam block 63 having handles 64 and a transversely extending wedge-shaped cam 65 on its lower surface. The cam block is held in position and rotative relative on the pressure rod by means of nuts The wedge-shaped cam 65 co'ciperates with a cross-cut trough-shaped groove 67 in the upper surface of the over-hanging head 60, the relation of the parts being such that, when the cam head is turned in position, as shown in Fig. 5, the wedge-shaped cam will register with the groove 67, and when the,

cam head is turned at right angles thereto,

ead g 60,: through messes the cam will ride out of the groove and lift the pressure rod, thereby releasing the ball Valve v 7 It will be noted from the foregoing de scription, that the valve of the present invention, in either of the forms described, is

one which can be readily assembled or disassembled, and is one which can be thrown into and out of operative relation without disturbing the adjustment of the spring tension, or other careful manipulation. The relation of the parts is such that, when the pressure rod is lowered, the ball will support the entire tension of the spring, and in order to insure this result, itis desirable to cut the cam groove sufiiciently deep, so that there will be a slight clearance between the Wedgeshaped cam and the groove when the parts are in register, thereby throwing the entire load of the spring on the ball and support-1 channel, .or to be turned out of registertherewith for retracting the pressure rod to release the valve member, a spring exerting pressure on the cam heads-and pressure rod, means for adjusting the pressure of the spring, and a member upstanding from the cap block and adapted to receive the thrust of the spring adjusting'means, substantially as described.

2. In a pressure reducing valve, the combination of a casing provided with inlet and discharge passages, a valve member seated within the casing, a pressure rod normally bearing upon the valve member, a cap block through which the pressure rod is entered, and provided with a cross-cut cam groove or channel, a cam head receiving the upper end of the pressure rod, and provided with a transversely extending cam and adapted to register with the groove or chan- I nel, a lever piece outwardly projecting from the cam head for turning thesame, a spring bearing against the cam head, means for adjusting the pressure of the spring, and an upstanding member for receiving the thrust of the spring adjusting member, substantially as described. 4

3. In a pressure reducing valve, the combination of a casing provided with inlet and discharge passages, a valve member seated within the casing, a pressure rod normally bearing upon the valve member, a cap block through which the pressure rod is entered, and provided with a cross-cut cam groove or channel, a cam head receiving the upper end of the pressure rod and provided with a transversely extending cam and adapted to register with the groove 01' channel, .alever piece outwardly projecting from the cam head for turning the same, a spring bearing against the cam head, a screw for adjusting the pressure of the spring, and a standard upstanding from the cap vided with an over-hang ng head through which the screw is threaded, substantially as described.

4. In a pressure reducing valve, the combination of a casing provided with inlet and discharge passages, a valve member seated within the casing, a pressure rod normally bearing upon the valve member, a cap block through which the ressure rod is entered,

a standardupstandmg from the cap block.

block and 4 proand provided with an overhanging head, a spring interposed between the-overhanging head and the cap block for exerting a downward pressure on the pressure rod, adjustable fiieans bearing against the spring adapted to regulate the pressure on the pressure rod, and rotatable means connected with the rod and independent of the spring adjusting means, and including a cam coacting with a suitably positioned fixed camsurface for imparting longitudinal movements to the pressure rod to raise or depress the rod in opening and closing the valve,

substantially as described. v

RALPH W.,E. HAYES. Witnesses: I

CLINTON S'HU LEY,

/ C. K. Woonm!

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