US1528172A - Automatic plate valve - Google Patents

Description

Mar. 3. 1925.

Filed Dec. 31, 1921 2 Sheets-Sheet l Mar. 3, 1925.

J. H. H. VOSS AUTOMATIC PLATE VALVE 'Filed Dec. 31, 1921 w 2 Sheets-Sheet 2 I I vweuboz Patented Mar. 3, 1925.

UNITED STATES,

PATENT orrics.

JOEANN' HEINRICH HE RILANN VOSS, OF WHITE PLAINS, NEW YORK, ASSIGNOR T WORTEINGTON PUMP AND MACHINERY CORPORATION, OF NEW YORK, N. Y, A

CGRPORA'JZION or vv'menvra. I

AUTOMATIC imam VALVE.

Application'flled December 81, 1921. Serial No. 528,158.

To all whom it may concern Be it known that ILJOHANN HEINRICH HERMANN Voss, a citizen of the German Republic, residing at White Plains, county of VVestchester, and State of New York, have invented certain new and useful Improvements in Automatic Plate Valves, fully described and represented in the following specification and the accompanying drawings, forming a part of the same. g

This invention relates to automatic plate valves adapted for use in high speed gas and air compressors and the like, and especially to automatic plate valves of the class that function'by bendingand are free from 10- calized bending with its resulting crystallization of the metal and early fracture, the especial object of the invention being to pro vide an improved valve of this class, in

which the valve shall be properly held in position and guided in its opening and closing movements with the'minimum of friction and wear on the valve seat and valve.

For a full understanding of the invention a detailed description of a construction embodying the invention in preferred forms will now be given in CODDGCtlOIlWltll the accompanying drawin forming a part of this Specification, and t e features forming the invention then be specifically pointed out in the claims. r

In the drawings:

.Fig. 1 is a cross section of a complete valve structure, transverse to the ports and .35 alve plates;

Fig. is a section on the line 2-2 of Fig; 1; a

Fig. 3 is a sectional plan of Fig. 1 approximately on the line 3- 3, with the valve seat partly broken away to show the construction,'-and Figs. 4, 5, 6 and 7 are detail sections similar to Fig. 2 showing modifications.

Referring now to the drawings and espe' deny to Figs. 1 to 3, A is the valve seat,

shown as of circular .form and havin the series of straight ports a, each of which is controlled bya plate or strip valve 6, which opens against the stripe between the valve seat A and the abutment block C, which abutment C has a Y series of ports (1 out of line with the ports a and valves 6. i The abutment block- C preferably has a sleeve extension D, as shown,

abutment and holdingwhich extension encloses the valve seat A and is screw threaded beyond the valve seat to receive the holding block E shown as consisting of a spider having a recess 10 at the hub for receiving the usual holding screw for securing the valve in place.

Each of the valves moonsists of a thin str1p of metal free to bend uniformly so as to avoid localized bending, these valves being substantially the same in construction and function as described and claimed in: Meyer Reissue Patent No. 13991, dated Octobe'r 12, 1915, and Patent No. 1,341,145,

dated Ma 25, 1920, except for the features forming t e present invention.

In accordance with the present invention, as illustrated in Figs. 1 to 3, the valves 1) and the correspondin abutment strips 0 are formed with bent on s 1, 2 projecting into recesses 3 in the abutment block 0, and the valves and abutment strips are spring seated near their ends and preferably at the bends,

by coil springs e seated in holding recesses in the abutment block C, so that a ielding abutment is thus formed for theen s of the valves 1). Thebent ends of the valves 6 and strips care curved so as to permit the ends of the valves to roll on the abutment strip.

ends freely as the valves bend in opening and closing, the radius of curvature at contact preferably being-approximately the same, althou h e'fiicient action may e secured v'vith t e radius of curvature of the valve ends being somewhat larger than the radius of curvature of'the abutment strips.

The abutment strips 0 preferably are elastic so as to form an elastic abutment for the valves 6 in their opening movement, but they may be of such thickness ormaterlal as to be rigid. With this construction, the sliding motion of the valve ends on. the valve seat or abutment in the functioning of-the valve is reduced to a minimum, the valve ends rolling on the abutment strip with substantiall no dragging and, with the sprin seated a utment strip, providing for a slig t lift and rolling movement of the valve ends on thevalve seat without substantial dragging or pressure thereon. The wear on the valve and valve seat is thus'reduced, and

the .valve seat kept clean at the valve ends.

. The construction shown in Fig. 4 is substantially the same as above described, e1;- cept that the abutment or backing str p 0 1s z springs being shown as of a different form from those otFigs. 1 to'3 and made from a strip of metal rolled into a spiral.

The construction shown in Fig. 5 is the same as those shown in Figs. 1 to t, except that the abutment strip is omitted and the valve ends do not roll directly on the abutment or spring, but on hearing blocks a 'set into recesses in the abutment block C and backed by coil springs at, these blocks being formed with curves co-acting with the curved ends of the valves in the same manner as described in connection with the abutment strips of Figs. Ito 3.

The construction shown. in Fig. it is the same as that shown in Fig. 5, except that the elastic seating of the blocks 9 is omitted so that there is no elastic seating of the valve ends or lifting of the valves a inst spring pressure, but the valve ends simply roll on the rigid blocks 9 and the valve seat.

The construction shown in Fig. 7 is similar to that shown in Figs. 1 to 3, except that the valve 6 is not curved at the ends, but the valve is straight and these ends parallel with the valve seat.v The advantage of the curved and valves of Figs. 1 to 6, therefore is not obtained, but the elastic seating oi the valve ends provides for some liftin movement of the valve, and this, especia 1y with the abutment strip between the springs and valve ends, aids in securing theproper holding and action of the valves. The springs are made so light that localized'bending is substantially avoided, the curve on the abutment. strip 4 being such as to aid in seeming this result.

It will be understood that the invention is not limited to the detail construction or arrangement of parts illustrated, butthat modifications may be made by those skilled in the art while retaining the invention defined by the claims.

What is claimed is 1. The combination of a valve seat having one or more ports, one or more thin elastic plates formin valves and free to permit uniform bending and having their ends curved away from the valve seat, and an abutment having resilient surfaces on which said curved ends bear in the opening and closing movements {,of the valve.

2. The combination of a valve seat having one or 'more ports, one or more thin elastic plates forming valves and free to permit uniform bending and having their ends curved away from the valve seat an abutment having resilient surfaces on which closing without localized bending o means said curved ends bear in the opening and' closin movements of the valve said surfaces being curved to co-act with the valve 'curves in securing an easy movement of the valves in opening and closing without localized bending of the valve ends.

3. The combination ot a valve seat havmg one or more ports, one or more tlllll "valves and having surfaces on which said curved ends bear in the opening and closing movements of the valve.

4. The combination of a valve seat 'having one or more ports, one or more thin elastic plates forming valves and free to permit uniform bending and having their ends curved away from the valve seat, a

cap, and separate thin elastic abutment Q plates for the valves interposed between the cap and the valves and having surfaces on which said curved ends bear in the opening and closing movements of the valve.

5. The combination of a valve seat having one or more ports, one or more thin elastic plates forming valves and free to permit uniform bending and having their ends curved away from the valve seat, separate abutment plates for the valves interposed between the cap and the valves and havin surfaces on which said curved ends bear in the opening and closin movements of the valve, and a spring% for the ends of the abutment plates.

6. The combination of a valve seat having one or more ports, one or more thin elastic plates forming valves and free to permit uniform bending and having their ends curved away from the valve seat, a cap, and separate abutment plates for the valves interposed between the cap and the valves and having surfaces on which said curved ends bear in the opening and closing movements of the valve, said surfaces:v being curved to co-act with the valve curves in securing an easy movement of the valves in openin and the valve ends.

7. The combination of avalve seat having one or more ports, one or more thin elastic plates forming valves and free to permit uniform (bending and having their ends curved away from the valve seat, a cap, separate abutment lates for the valves inter osed between t e ca and the valves and "aving surfaces on w 'ich said curved ends bear in the opening and closing movements of the valves, said surfaces being acking us i curvedto co-act with the valve curves in securing an eas opening and c osing without localized bendmovement of the valves in ing of the valve ends, and a spring backing for the ends of the abutment plates.

' 8. The combination of a valve seat having cap, and a sprin backing for the ends of the abutment p ates forming a resilient backin for the ends of the valves.

9. T ie combination with the valve seat A and valve 11 consisting of a thin elastic plate free to permit uniform bending and having bent ends 1 formed by a curve away from the valve seat, of valve cap C having recesses 3 receiving the bent ends of the valve. 10. The combination with the valve seat A and valve 6 having bent ends 1 formed by a curve away'froin the valve seat, of valve cap C having recesses 3 receiving the bent ends of the valve, and curved bearing surfaces for the curved portions of the valve ends.

11. The combination with the valveseat A and valve b having bent ends 1 formed by a curve away from the valve seat,1of

valve cap C having recesses 3 receiving'athe bent endsof the valve, and spring seated 'curved bearing surfaces for the curved portions of the valve ends.

12. The combination with the valve seat A and valve 12 having bent ends 1 formed by a curve away from the valve seat, of valve ca C having recesses 3 receiving the bent en s' of the valve,- and an abutment strip having curved bearing surfaces for the curved portions of the valve.

13. The combination with the valve seat A and valve 6 having bent ends 1 formed by a curve away from the valve seat, of valve ca C having recesses 3 receiving the bent en s of the valve, and an abutment strip having spring seated curved bearing surfaces for the curved portions of the valve.

' 14. The combination with a valve seat A.

having straight ports and latevalve's controlling said ports, of cap having a flange enclosing the valve seat with a flange pro jecti beyond the valve seat and screw threa ed on the inside, and a holding member screwed into the flange against the valve seat.

my hand.

-' I JOHANN HEINRICH HERMAN" VOSS.

In testimony whereof, I have hereunto set

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