US1193577A

US1193577A - mcgowan

Info

Publication number: US1193577A
Authority: US
Publication date: 1916-08-08
Anticipated expiration: 1933-08-08

Description

0.1. McGOWAN.

VALVE. APPLICATION men om. 30. 19w.

WITNESSES Patented 2 SHE HEET 2.

INVENTOH aJ/y bwan.

A TTORNE YS vide-means for effectively sealing a valve UNITED STATES PATEN o IG owEN J. McGOWAN, OF NEW YORK, N. Y.

VALVE.

' Specification of Letters Patent;

Application filed October 30, 1915. Serial No. 58,815.

T 0 all whom it may concern:

Be it known that I, OWEN J McGowAN, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have im'enteda new and Improved Valve, of which the following is a full, clear, and exact description.

Among the principal objects which the present invention has in view are: to pronipulation of the valve; to avoid. Wearing the valve seat; and to simplify and strengthen the construction.

Drawings-Figure 1 is'a vertical section of a valve constructed and arranged in accordance wih the/present invention, the section being taken as on the line 1,'1 in Fig.

2;,Fig. 2 is a horizontal section, taken as on the line 22 in Fig. 1; Fig. 3 is a horizon tal section taken as on the line 3-3 in Fig. 1; Fig.4 is a side elevation of a valve constructed and arranged in accordance with the preferred form of the invention; Fig. 5 is a section taken as on the line 55 of Fig. 4; and Fig. 6 is a vertical section, showing on a reduced scale, a modified form of the invention.

Description.As seen in the drawings, a casing 11 has end-opening passages 12 and a central chamber 13 disposed between the sanfe. The chamber 13 in the preferred form is cylindrically bored to true the inner surfaces of the grid barsl i, which are integrally formed with' the casing 11 and are separated each from the other to form passageways 15 'therebetween, connecting the passages 12'and the chamber 13. Theaggregate of the exposed areas of the passageways 15 is the measure ofthefullvalve capacity. The valve casing-is globular in form and tlie'outer openingsof the passage ways 15 are removed'from the passages 12, to relati vely 'increase the len'gthfo'f the'entrance end of the said passages, so that the aggregate exposed area of the said passages approximate theiarea of each of the pas sages 12. v

The bars Mare extended in web-like form between the side walls of the casing 11, as

Patented Aug. 8,1916;

shown best in Fig. 3 of the drawings- "On '3 the median plane of the valve, the saidbars are connected with vertical ribs 16, the inner surface of which ribs is flush with the inner surface of the bars 14 and form (livid mg partitions for the chamber 13 and guides for the

webs

17 and 18 of the separable halves of the sectional valve 19, with which the preferred form of the inventionis provided. The bars 14 are reinforced by the central webs 20, the inner edges of which are flush with the edges of the bars 14 and coincide with corresponding reinforcing webs' 21, with which the valve members 19ar'e supplied, as seen best in FigsQ3 and f1 of" the drawings. I

The structural members of the vali'e 19 are held alined by the tenon rails 22 formed in one member,- which in service are, dis-" posed in corresponding slots formed in thef opposite member, as seen best'in F ig'sal and 5 of the drawingsnthusioineil i it is obvious the sections of the valve 19 a raised and lowered simultaneonsly. To a p vote and depress the-.valve,is the ofiice of! the stem 23. The stem 23 has at the exposed end a threaded section 24, with the th eads, of which is engaged a nut 25, tin-which is" rigidly mounted a hand wheel 26. The nut 25 and hand wheel 26 are pivotally' mounted? upon and supported by a domedcross head 27, which in turn .is supported by short standards 28, being held thereon by reduced" threaded extensions 29 thereof and the nuts-30 mounted on said; extensions.

The standards 28 are integrally formed with the valve cap 31. Centrally disposed on the cap 31 and projectedthe reabove is a neck 32, which is'centrally hord and fitted to the stem ,23, The said neck is provided" at intervals with annular grooves 33, which form Water seals, to prevent the escapement of steam if the valve is used, in such service,

or of water-if so employed. The steiriis held against rotation by a yokej bar 58,'Which is provided-in the endwith p f ti to slideon the standards 28.

. The connection between the. stem 23 the valve 19 is formed by a rectangular ta 'ieig section 34; The boundary betweenthesteIn 23 and the taper section 34 is formedby a valve.

60' the skirt 46 to slide thereon. Thethrust collar 35, as best seen in Fig. 1 of the drawings. The'taper section 34 is inverted or is so arranged that the smaller end of the taper is juxtaposed to the

collar

35 and 5 stem '23, while the larger end of the said section is in'service disposed at the bottom side of the valve 19. To t the section 34, the sections of the valve'l are-provided with

half columns

36 and 37. Co lum;ns 36' and 37 are shaped'to conform with the taper of the section 34', which section thereafter rests securely between the said half columns.

From the foregoing, it -'is obvious that when'thus mounted, if the valve 19 beheld. against upward travel and-the stem 23 beelevated, the =wedging action of the section 34 will separate the sections of the valve 19 laterally. is this movement which is finally relied upon in'the operation ofthe; preferredform of the resent invention for seating the valve and t e flanges 38 thereof against the trued surfaces of the -liar sv14 to bridge;the passageways 15 formed thereby, thu'ssealing the saidpassageways 'andthe The normal arrangement of the valve 19 and the section 34,- is that shown best in 1 of the drawings where the collar 35 rests firmly. upon. the upper edge of the'half 3,

columns

36 and, 37. The sections- 0151 the vajlve 19 are held "against'the half, columns 136 and-37 by a .coilsprin'g 39. The spring '39 in folds' the bolt 40 between file head:

ther'eof and a'fplug 41,which.is driven in'the 3 tapped endo ahole 42 bored in the lower end of the section 34. The bolt '40 slides freely through the plug 41 Mounted on the lower end of the bolt 40is a disk 43, being held thereon by a screw nut 44. The yield- 40 ing-connection thus formed by thespring 39 between the section 34, and the valve 19 perhits the slight independent movement of the 23 after the arrestation of the valve 19 ,by theannular abutment'45 formed by the 45 lower edge 'of the skirt 46 of the' c'ap '31.

The abutment 45 determines the limit of the upward lift of the valve 19.

' To secure a positive action in the movement of the valve 19 by the stem' 23, pro

vision is made to lift the said valve through a rigid connection instead of the yielding connection .formed by the spring. 39.

this end, the valve sections are each arranged with lugs 47, which form bearings '55 for dogs 48. Each dog 48 is pivotally mounted by bolts 49 in' the lugs 47 as seenbestin Figs. 1 and 2 'of the drawingsT-At' one end of each of .the dogs is formed aheel" 50 which bears against the inner surface of L eel 50 of each dog has a straight surface sufficiently-long to prevent the turning of the dog on the pivot bolts 49. The heels 5O thus constructed and arranged serve to hold the'toes of the saiddogs in bearing relavalve 19 whic tion to the collar 35. :From this, it will be seen that as the stem'23 is elevated, the drag of the valve 19 is imparted'to the toes 51 of the dogs 48. "Said dogs during the first part of. the movement of the valve 19, carry the total weight until the upper edge of the said valve engages the abutment 45.

' The skirt 46 is cut aw'y to form an an-. nular recess 52 into whi h the heel 50 is moved when the dogs 48 are locked. The

movement of the dogs 48, is such that the toes 51. are elevated with the collar 35 as the straight surface ofthe heel 50 passes over to rest upon the straight shelf 53, forming the lower boundary ,of the recess 52. 'Itspread thus im arted to the section of the- V forces the stem tightly againstthe bars 14 and effectively closes the passageways 15, is -mainteined by .the dogs48. v

When the hand wheel 26 is'rotated in a manner to depressthe stem 23, to open the passageways '15, the dogs 48 hold the valve from lowering until the collar 35 has passed;

to a point where the toes 51 of the. dogs48 are lowered. and the heels 50 are disposed .a-rallel relation to the side of the skirt 46.

uring this portion of the movement of the:

stem 23, the spring 39 which has been contracted by the independent lift of the stem 23 is'now permitted to extend while holding the sections of the v ve 19 at the upper level trolled fluid on the valve, operates to release or unseat the valve. The moment the controlled fiuid passes to the inside of the va-lve, the chamber 13 becomes filled and the valve is balanced. The remainder of the opening'movement ofthe valve to the position, shown in Fig. '1 of the drawings, is .relativelyunresisted v 1 In Fig. 6, of th'drawings, ,a modified form of the invention is shown, wherein the valve54 is externally tapered. The inner surface of the grid bars 55 are similarly tapered to form seats for the flanges 56 of the said valve, whenmoved thereto by the stem 57. .It will be observed that in this "form-ofthe valve, theseparable sections are dispensed with,

While I have lierein described the inven tion as adapted='- to cage or-grid valves, it will be understood that it may be ap lied to other'forms of valves, and such app ication is considered to be within the scope of the present invention.

Claims:

1. A valve comprising a casing embody ing inlet and delivery passages, and a series of parallel bars forming a centrally disposed valve chamber: a cage valve embodying a plurality of separable members each having a series of parallel passageways corresponding with the bars forming said valve chanr her; a valve stem for moving said cage valve to register the solid portions of the walls thereof with the passageways between said bars; a tapered member rigidly mounted on said stem extending between said separable members for wedging the same apart; means for arresting the movement of said separable members in registry with the spaces between said bars; and means connecting said stem and said members to pe mit independent movement of said stem, said means embodying a compression spring normally operative to maintain the smaller section of said stem between said members.

2. A valve comprising a casing embody ing inlet and delivery passages, and a series of parallel bars forming a centrally disposed valve chamber; a cage valve embodying a plurality of separable members each having a series of parallel passageways corresponding with the bars forming said valve chamber; a valve stem for moving said cage valve t register the solid portions of the walls thereof with the passageways between saidbars; a tapered member rigidly mounted on said stem extending between said separable members for wedging the same apart; means for arresting the movement of said separable members in registry with the spaces between said bars; means connecting said stem and said members to permit independent movement of said stem, said means embodying a compression spring normally operative to maintain the smaller section of said stem between said members; and means for housing said spring'within said tapered member, said means embodying an end-opening recess in said stem, a closure plug therefor, a supporting bolt, and a disk bearing on said members in supporting relation thereto.

3. A valve comprising a casing embodying inlet and delivery passages, and a series of parallel bars forming a centrally disposed valve chamber; a cage valve embodying a plurality of separable members each having a series of parallel passageways corresponding with the bars forming said valve cham- -ber; a valve stem for moving said cage valve to register the solid portions of the walls thereof witl the 'iassageways between said bars; a tapered member rigidly mounted on said stem extending between said separable members for wedging the same apart; means for arresting the movement of said separable members in registry with the spaces between said bars; means yieldingly connecting said stem and said members for permitting the movement of said stem after the arrestation of said members: and means for normally preventing the separation of said members.

4. A valve comprising a casing embodying inlet and delivery passages, and a series of parallel bars forming a centrally disposed valve chamber; a cage valve embodying a plurality of separable members each having a series of parallel passageways corresponding with the bars forming said valve chamber; a valve stem for moving said cage valve, to register the solid portions of the walltlfsreof with the passageways between said bars; a tapered member rigidly mounted on said stem extending between said separable members for wedging the same apart; means for arresting the movement of said separable members in registry with the spaces between said bars; means yieldingly connecting said stem and said members for,

permitting the movement of said stem after the arrestation of said members; and means normally operative to prevent the separation of said members when the solid portions thereof are not registered with the spaces between said bars.

5. A valve comprising a casing embodying inlet and delivery passages, and a series of parallel bars forming a centrally disposed "alve chamber; a cage valve embodying a plurality of separable members each having a series of parallel passageways corresponding with the bars forming said valve chamber; a valve stem for moving said cage valve to register the solid portions of the walls thereof with the passageways between said bars; a tapered member rigidly mounted on said stem extending between said separable members for wedging the same apart; means for arresting the movement of said separable members in registry with the spaces between said bars; means yieldingly connecting said stem and said members for permitting the movement of said stem after the arrestation of said members; a plurality of dogs mounted on said members in engaged relation with said casing for nor- .mally preventing the operation of said members; and means embodying a recess in said casing for permitting the movement of said dogs to permit the separation of said members.

(3. A valve comprising a casing embody- .ing inlet and delivery passages, and a series of parallel bars forming a centrally disposed valve chamber; a cage valve embodying a plurality of separable members each having a series of parallel passageways corresponding with the bars forming said valve chamber; a valve stem for moving said cage valve to register'the solid portions of the walls thereof with the, passageways between said bars; altapered member rigidly mounted on said stem extending between said separable members for wedgingthe same apart; means for arresting the movement of said separable members in registry .With' the spaces between said bars;emeans yieldingly connecting said stem and said members for permitting the movement of said stem after the arrestation' of said members; a cap for i said chamber forming a guide for said stem;

moving said members without separation thereof; and means embodying a'reeess in 15 said cap for releasing said dogsto permit independent movement of said stem and the separation 'of said members.

In witness whereof I have signed my name to "this specification in the pres nce of 20 two subscribing witnesses.

OWEN J. MCGOWAN. W'itnesses t GE RG HQ EMsLEE, Enwann 'J. HOPPER, Jr.