US1442204A

US1442204A - Slide valve

Info

Publication number: US1442204A
Authority: US
Inventors: Wilson Wylie Gemmel
Original assignee: SLIDING VALVES Inc
Current assignee: SLIDING VALVES Inc
Priority date: 1919-02-15
Filing date: 1919-02-15
Publication date: 1923-01-16
Anticipated expiration: 1940-01-16

Description

Jan. 16, 1923. 1,442,204. w. 9. WILSON. SLIDE VALVE.

FlLE') FEB. 15, 1919. 5 SHEETSSHEET l.

, a 4 TTORNEYJ 4 Jan. 16,1923. 1,442,204.

W. 6. WILSON.

SLIDE VALVE. FILED FEB. 15, 1919. 5 SHEETSSHEET 2 INVENTUR M/y/fe Gemme/ Wl'lsmg 1d ATTORNEYS Jan. 16, 1923. 1 1,442,204.

W. G. WILSON.

SLIDE VALVE.

FILED FEB. 15, 1919. s SHEETSSHEET 3.

: mvsmron M/ie Gemme/ Wilson 1 ATTORIIEIS Jan. 16, 1923. 1,442,204. W. G. WILSON.

SLIDE VALVE. FILED FEB.15, 1 91.9. v s SHEEISSHEE14.

. INVENTOR Wy/ie Gemme/W/bm annual/H's" Jan. 16, 1923. 1,442,204. w. 0. WILSON.

SLIDE VALVE.

FILED FEB. 15, 1919. 5 SHEETS-SHEET 5.

INVENTOR M/y/fe Gemmc/ Wilson,

@ATTOHNEKS Patented Jan. 16, 1923.

UNITED STATES 1,442,204 PATENT OFFICE.

WYLIE GEMMEL WILSON, OF NEW YORK, N. Y., ASSIGNOR TO SLIDING VALVES INCOR- PORATED, A CORPORATION OF DELAWARE.

SLIDE VALVE.

Application filed February 15, 1919. Serial No. 277,129.

gTo all whom it may concern:

Be it known that I, WYLIE GEMMEL W11.-

SON, a subject of the King of Great Britain, and a resident of New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Slide Valves, of which the following is a specification. This invention relates to an improvement in that type of valve known as slide valves, wherein a port is closed by the operation of a plate bisecting the path of the fluid passing through a port and cooperating with a valve seat surrounding said port.

Ithas been customary in such structures to form the valve seat homogeneous with the valve casin or to construct a separate memher as a va ve seat and secure the same rigidly to the casing in position to surround the port. It has also been customary to so mount the slide valve as to permit its reciprocation within more or, less prescribed limitations.

This invention departs from those conventional constructions in that the valve seat is loosely mounted so that it may expand and contract under changes of temperature and yet perform. all of the functions of a valve seat, In. like manner the slide valve is loosely mounted allowing for a certain play in its operation, all for the purpose of overcoming difliculties which have been encountered in the operation of earlier constructions.

It is obvious that it is desirable to form said active valve elements of refractory material. Metals of all kinds have been employed and certain composite metals have been made to serve the purpose fairly well under normal conditions, but there are certain abnormal conditions which have developed in modern manufacture which present new problems and under which existing valves have been found to be inadequate for the purpose.

These difiicult conditions are particularly manifest in the manipulation of acids or corrosive liquids which have a tendency to disintegrate, oxidize or corrode metals employed for the active elements in valves. Even steam at high temperatures has a disintegrating effeot 'z.

It is alsofoundwthat where a valve seat is formed. of suitable metal and screwed or otherwise secured into relation with a valve casing, that under high temperatures the difference in the expansive quality of the seat and its mounting results in fractures in one or the other which is disastrous to the mechanism.

It is well known that glass is well suited. to resist the action of acids, and is less susceptible to corrosion or the consequences incident to changes in temperature than possibly any other material. When I name glass I intend to include substances of a similar nature. But the difiiculty in employing glass as a'material from which to construct the active elements of a valve lies in the fragility of such material. Any sudden shock or blow will fracture the glass and render the valve inoperative, also if the glass is subject to strain due to the expansion or contraction of metals it will crush or crack. These are the obvious difliculties which have been encountered in the use of glass'or other fragile material-for this purpose.

One of the objects of this invention is to provide means byhwhich glass may be employed for one or both of the active elements of a valve, and wherein the shocks and strains which are fatal to its use may be avoided and the inherent qualities of glass for the purpose stated may be utilized.

Another object is to construct a valve wherein the valve seat is mounted as free elements within the casing, and disconnected from all parts of the casing so as to eliminate any danger of fracture or distortion by reason of the expansion or contraction of the seat or the casing, the valve seat simply resting on a suitable sealing element as a gasket. This structure is desirable for the further reason that it is possible to remove and replace the valve seat with ease and celerity. In like manner, the slide valve is so mounted as to be free to move. without the possibility ofjamming or crushing strains and with suflicient clearance to allow for expansion and contraction. It may also be readily removed and replaced.

The valve and its seat are held together by an elastic pressure which may be regulated to accomplish co-action .between the active elements and the same time make effective the seal.

The term floating is used inthe claims. as describing a valve seat herein disclosed as this term appears to be appropriate to express the -idea of an element that is free from'attachment to itsimounting, as distinguished from those forms ofvalve seat that are homogeneous with or fixed to the casing, andas an appropriate term to define. a valve seat that is so related to its mounting that it is free to expand and contract in any direction without restriction under all .conditions oftemperature-to which it may be exposed. It is also an appropriate term as applied to a valve element that is loosely mounted as compared to a similar element that is rigidl mounted, the free or loose mounting in like manner permitting a certain latitude of movement to compensate for expansion and contraction due to changes of temperature as well as. an automatic adjustment between the active elements "of the valve. The same conditions of mounting lend themselves to an easy dismemberment and replacement of the valve elements without disconnecting the valve from its'position in the conduit which it controls by simply removing part of the easing as described.

I have illustrated one embodiment of my invention in the accompanying drawings,- referring to the several parts by numerals, designating like parts bylike numerals.

Fig. 1 is a plan view. 7

Fig. 2 is a horizontal and longitudinal section taken on the line aa, Fig. 1, the same showing certain parts in elevation.

Fig. 3 is a vertical longitudinal section,

' taken on the line 72-?) of Fig. 2.

slide -valve a rotar Fi 4 is a transverse vertical section on the hue cc in Fig. 3;

Fig. 5 is a transverse vertical sectiontaken on the line cl-d of Fig. 3. f i

Fig. 6 is a perspective'view of the valve seat.

Fig. 7 is a perspective view of the slide valve plate.

Fig. 8 is a perspective view of the pressure.

of construction but embodying the same general principles, wherein instead of a spherical valve is em ployed, but the va ve sea ressure/cylinder and other elements are substantially-the same only in a'form suitableto meet the,

changed structure.

Referring to Fig. 2, 1 is avalve casing intersected by a port, as2. .In this casing is formed an annular recess, as 3, surround:

- ing the port. This recessis adaptedto reoeive and support an annular valve seat,

. I F )l hereinafter to be described. A further annular recess is also provided within said casing, as ,4, t'o receive a cylindrical membernumbered on said drawing 22, and hereafter to be described. 5 is a bracket secured to one end of the casing 1 by the screws 6. This bracket is adapted to support and guide a screw shaft numbered 43, and hereafter more fully described. 7 is a screw head of usual construction, mounted within the arms 5, the same being internally screw-threaded to receive the screw shaft 43. .8 is an aperture inthe casing 1, through a which the shaft 43 passes, the same also forming a stufiing box around said shaft."

trolling the valve are mounted tomove.

15 is an aperture in the valve lid'12, through which the shaft 24 is adapted to pass. 16 is an aperture forming a stufiing box surrounding the shaft 24. 17 .is an annular gasket, preferably made of resilient material, and adapted to fit within the annular aperture 3 surrounding the port 2. 18 is a cylindrical valve seat, adapted to rest within the aperture 3' on the gasket '17. This cylindrical valve (seat 18 is made slightly smaller than the interior circumference of the aperture 3, so that it is free to move within the prescribed limitations of the aperture 3, and yet suflicient space is allowed so that the expansion and contraction of the material composin the valve casing, or of the material of which said valve seat 18 may befor'med, will not be such as to hinder the movement of the said valve seat within said aperture. This valve'seat is one of the elements that I characterize as a floating element, for the reason that it is free to move within the aperture adapted to receive the same, as opposed to any strains arising from change of temperature, and is also not in any way secured to ,the casing but rests loosely on its supporting gasket stated, said valve seat'may be lifted off of its seat and out of said aperture without so that with the dismemberment of the .medhanism, as will be hereafter more fully 4 with the slots 39.

seat 18. It is preferably provided with an aperture 20, corresponding in dimensions with the port bisecting the valve. It is also provided with the aperture 21 adapted to receive a bolt, hereafter to be described. I have illustrated the same'in perspective in Fig. 7. 22 is a cylindrical member of substantially the same size as the cylindrical valve seat 18, and is provided with oppositely disposed lugs 23, and is illustrated in perspective in Fig. 8. 24 is a shaft, one end of which as at 25, is journalled at the aperture 11 of the casing,1. This shaft passes through the aperture 15 of the lid 12, and the stuffing box 16 of the same lid. 26 is a sealing member for the stufling box 16, supported thereon by the bolts 27. 28 is packing contained within the said stufling box 16. 29 is a ring provided with a dependent member' 30. This ring is mounted at the other end of the shaft 24 and keyed thereto as at 31. 32 is a bracket secured to the lid 12 by suitablebolts, as 33. This bracket carries a cup-shaped head 34 supported by a threaded bolt. as 35, said bolt.

having a head, as 36, by which it may be rotated. Interposed between said cupshaped member 34 and the dependent member 30 is a helical spring 37, adapted to bear upon the dependent member 30, and in so doing rotate the shaft 24. 38 is a bifurcated member, the arms of which are provided 40 is a bolt secured to the rear of the said bifurcated member 38, and provided with a nut 41. 42 is a hole in the shaft 24, adapted to. receive the bolt 40, the nut 41 serving to lock said bolt and bifurcated member in connection with the shaft 24. 43 is a shaft adapted for reciprocation in the aperture 8 of the casing 1. This shaft is at one end bifurcated, as at 4444. piercedby holes, as 4545, see Fig. 4. Said shaft is also provided with the

wings

46, 46. 47 is a packing box in the casing 1, and 48 packing contained within said packing box;

49 is a lid for the same, secured thereto by the bolts 50. 51 is the screw threaded section of the

shaft

43, and 52 is an internally screw-threaded box mounted to rotate within one end of the bracket 5. 53 is a hand wheel secured to said screw box 52.

Referring to Fig. 9', the second form of construction is illustrated, wherein the elastic means for exerting pressure upon the valve plate is varied by substituting a wedge formation. This drawing is a transverse section of the structure as previously described. All the elements are thev same with the exception of the fact that I make the cylindrical member 54 in this case, (22

. in the former case), of wedge shape, that is to say, out to form' one face diagonally to its axis, ,at approxlmately 40 degrees or more, the other face being perpendicular to These bifurcated members are its axis. This cylindrical wedge member is provided with a shaft 55, adapted to work freely within the aperture 56 against the tension of the spring 57 contained within said aperture. It will be understood that the casing is cut to conform with the Wedge shaped disk, and the pressure of the spring 57 causes the said disk to be driven down wardly to impinge upon the valve plate 19 and cause the same to bear upon the valve seat 18 and gasket 17. In this construction I have provided a lid 58 which can be read; .ily removed for access to the working parts.

In Fig. 10 I have illustrated a third form of construction, wherein the cylindrical member designated in the first construction as 22,- and the second as 54, here is desig- ,nated as 59. Isurround this cylinder with the helical spring 60, and in the way obvious from the drawings reproduce the same pressure upon the-valve plate seat and gasket as heretofore stated. Inthis construction I provide the lid 61, the removal of which permits access to the operative parts for the purposes of re ir, etc. This lid is held in position by the bolts 62.'

In Fig. 11 I have illustrated a further form of construction, wherein a spherical valve is employed instead of a slide valve. This valve is indicated by 63.- This sphere is pierced by a port 64. which is adapted to cooperate with the valve seat 65 and the surface of the sphere 66 and with the pressure disk 67and the surface of the sphere 68. The disk 67 is caused to be elastically pressed against the sphere by the bifurcated arm 6969 operating on lugs 70 70 heretofore illustrated in previous constructions. Access to the valve is found by removing the plate 72. I

This valve is assembled and operated as follows: The casing is formed of two parts. a body 1 and alid 12. The lid having been removed the lower bar 9 is first'introduced and secured by the nuts lO. The shaft 43 can then be mm from the interior of the casing into'the aperture 8 and through its stufiing box 47 by which a fluid tight joint is accomplished. Reciprocal movement is imparted to the shaft 43 by the rotation of the hand wheel 53 which is secured to the screw box 52 which in turn operates on .the screw 51. The end 25 ofthe shaft 24 is then introduced into the bearing 11. This shaft 24 carries the bifurcated member 38. The cylindrical member 22 is then run into the aperture 4 so that the aperture-s 3939 embrace the lugs. 2323. The gasket 17 is then placed in theaperture 3 and the Valve seat 18 placed on the gasket and theslide valve 19 is introduced between the valve seat 18 and the cylindrical member 22. One.-

end of the slide valve 19 is broughtbetween the bifurcated arms 44 so that the hole 21 31 securing the collar 29 to the shaft 24 is withdrawn and the collar removed. The shaft 24 is then run into the aperture in the lid and through its stufiing box. As the lid finds its place the plates 14 dependent therefrom embrace the bifurcated arms 44 of the shaft 43 and operate to hold the pin 71 in position within the

apertures

45 and 21. The lid is then secured by the nuts 13. The collar 29 and pin 31 are restored with the spring 37 interposed between the cup 34 and. the radial arm 30. The tension of the spring 37 is regulated by the screw 36, and as its bearing is on the radial arm 30 it operates to rotate the shaft 24 and hence to cause the arms 38 to bear on the In 23 and cylindrical member 22 on the slid: valve 19 and the valve 19 on the valve seat 18 and the valve seat 18 on the gasket 17. This spring tension can be regulated at will. The relation between the bars 9--9 and the slide valve 19 is such that the latter may move freely between the former,-yet the bars definitely limit the lateral movement of the-,va1ve. The dependent plates 14-14 serve as, guides for the wings 4646 and operate to limit the movement of the shaft 43 to a reciprocal movement.

The operation is as follows: The hand wheel 52 is rotated thus imparting a reciprocal movement to the shaft 43 and slide valve 19. When the port 2 is in register with the hole 20 in the valve 19 the valve is open and when otherwise it is closed. By reason ofthe pressure of the spring tension 37 the cylindrical member 22 bears on the valve 19 andit in turn on the valve seat 18 and the latter on the gasket 17 thusaccomplishing a seal.

One of the advantages of'the structure is that it may be assembled or dismembered without difiiculty, and the active elements such as the valve 'seat and valve which are subject to wear or breakage may be re moved and replaced with a minimum of labor:

Referring to Fig. 9 the structure shown in that drawing is assembled substantially in the same manner as that last described. The lid 58 is first removeddthe gasket cylindrical valve seat, and valve plate are introduced, and then the cylindricalmember 54, cut with a wedge surface, is introduced into the corresponding wedge aperture, and through the medium of the spring 57 is caused to bear u'pon the valve and valve sea'tz Referring to Fig.:, 10 the variation in the structure is obvious. The cylindrical pressure disk, in this case numbered 59, and in the first instance designated as 22, is provided with a shoulder adapted to cooperate with a helical sprin 60, and causes the cylinder to bear upon t e valve, valve seat and gasket in like manner. Access to this valve is found by removing the lid 61 and bar 9 which when removed exposes the operative parts to easy removal and repair. It may be mounted on a' gasket which may be elastic or non-elastic or which may be omitted en tirely, the spring pressure operating on the.

temperature and cooperates wellwith a slide valve accommodating itself to an surface irregularities of the valve plate. t can also be readily removed and replaced.

The valve plate 19 may also be formed of glass to meet the conditions incident to the manipulation of corrosive fluids, but I do not intend to limit the construction of this valve to glass. It may be made of any suitable material. I may form the seat of glass and the valve of metal, or vice versa, or I may form both of glass. Lhave observed under such conditions as I have described that glass and glass cooperate to make a perfectseal.

Reci rocating movement is imparted to the valve 19 by the rotation of the hand wheel 53 in the usual manner. The cylindrical member 22 is caused to rest on the valve 19 in approximate alignment with the cylindrical valve seat 18, and is caused to continuous relation. The valve described being a one-way valve, the pressure ofthe fluid is usually suflicient to retain the valve seated under normal conditions, but it is desirable' to employ said elastic means to normally hold the valve and its seat in relation..

What has been said in reference to the removal for'repair or replacement of the valve' seat is equally true with reference to the valve. The whole structure may be dis membered by-removing the caps or covers, and one of the bars 9, whereupon the active elements are all exposed and may be readily removed.

While I have described several forms in which my invention may 'be embodied, I

do not intend to be limited to such constructions, for the invention is susceptible of embodiment in various forms.

What I claim is 1. A valve comprising a valve seat free to float in all directions, in combination with a suitable valve element.

2. A "alve comprising a valve seat and a mounting for the same, the seat and its mounting being so related that expansion or contraction of either one or both will not affect either, a valve for said seat.

3. A valve comprising a casing with a port through the same a valve seat mounted to surround said port and free to expand and contract without hindrance by reason of said mounting and a valve element to cooperate with said valve seat.

4. A valve comprising a casing with a. port through the same a valve seat adapted to co-operate with said port to form a continuous passageway and means to support said seat in said co-operative relation with out restricting the freedom of said valve seat to expand and contract and a valve element to co-operate with said valve seat.

5." A valve comprising a valve seat free to float in all directions in combination with a valve element and elastic means to hold the same in cooperative relation.-

6. A valve comprising a valve seat and a mounting for the same, the seat and its mounting being so related that expansion or contraction of either one or both will not affect either, and elastic means to hold the same in co-operative relation.

7. A valve casing with a port through the same, a valve seat co-operating with the port to form a continuous passage, a mounting for the seat which permits the free expansion or contraction of the seat, a valve ele- -ment mounted to co-operate withthe seat and means to operate the valve, elastic means adapted to bear on the valve and hold the same in operative relation with said seat.

8. A valve casing with a port through the same, a valve seat co-operating with the port to form a continuous passage, a mounting for the seat which permits the free expansion or contraction of the seat, ment mounted to co-operate with the seat and means to operate the valve element, elastic means adapted to bear on the valve element and hold the same in operative relation with said seat, said valve seat being formed of glass.

9. A valve comprising a casing with a port through the same, an aperture in the casing surrounding the port, a gasket seated in said aperture, a valve seat of a size to freely move within said aperture and resting on said gasket, a' slide valve element mounted to co-operate with said seat and means to operate said valve element with means to cause a spring pressure to bear on a valve elec said valve for the valve element and seat and gasket in cooperative relation and to accomplish a seal.

10. A valve comprising a casing with a port through the same, an aperture in the casing surrounding the port, a gasket seated in said aperture. a valve seat of a size to freely move within said aperture and resting on said gasket, a slide valve element mounted to co-operate with said means'to cause a spring pressure to bear on said valve for the purpose of holding said valve element and seat in co-operative relation and to accomplish a seal between the seat and said gasket, both said valve element and seat elements being formed of glass.

11. A valve comprising a casing with a port through the same, an annular recess surrounding said port and a gasket settherein, a cylindrical valve seat mounted on said gasket, said valve seat being of a size to admit of free expansion and contraction without binding effect due toits mounting, co-operate with, said valve seat and means to operate the same and elastic means to cause said valveelement to bear on its seat and the seat on said gasket.

12. A valve comprising a casing with a port through the surrounding said port and a gasket set therein, a cylindrical valve seat mounted on said gasket, said valve seat being of a size to admit of free expansion and contraction without binding effect due to its mounting,

a slide valve element mounted to co-operate with said valve seat and means to operate the same and elastic means to cause said valve element to bear on its seat and the seat on said gasket, both said valve-element and seat elements being formed of glass.

13. A valve comprising a casing ,with a port through the same, an annular recess surrounding said port and a gasket set therein, a cylindrical valve seat mounted on said gasket, said valve seat being of a size to admit of free expansion and contraction without binding effect due to its mounting, a slide valve element mounted to co-operate with said valve seat and means to operate the same and elastic means to cause said valve element to bear on its seat and the seat on said gasket, one of said'valve or seat elements being formed of glass.

14:- A valve casing with a port therethrough a valve seat mounted to surround said port and a slide valve adapted to cooperate with said seat a screw plunger mounted to pierce the casing and operate the valve, said plunger being bifurcated at its internal end and pierced with oppositely disposed holes, said slide valve also having a hole registering with the holes in said bifurpurpose of holding saidseat and means .to operate said valve element with a slide valve element mounted to same, an annular recess cated ends of the plunger, a pin adapted to enter said soles, said bifurcated ends exhold said pin in position and'to confine tendedto form wings, said casing divided intotwo parts a body portion and a lid for the same, and said lid having dependent plates adapted when placed inposition to span said bifurcated members and wings }to t e shaft to a reciprocating movement.

15. A valve comprising a casing with a port through the same, a valve seat mounted 16. A valve casing with a port therethrough, a valve seat mounted to surround said port and a slide valve adapted to cooperate with said seat and means to operate said valve, a cylindrical member of substantially the size of -the seat mounted to rest on the valve with elastic means to cause said cylindrical member to bear on said valve to hold the valve and its seat in cooperative relav tion said elastic means comprising a rockshaft carrying a bifurcated member, oppositely disposed lugs on either side of said member .with which said bifur-" cylindrical cated member is adapted to cooperate a ra-- dial arms secured to the end of said rock shaft with a spring interposed between said arms and a stationary element to cause said shaft to rock according to a predetermined tension. v

17. A valve comprising a casing with a port therethrough, a suitable valve bisecting the path of the fluid and a valve seat surrounding said port, said valve seat interposed between the valve and the casing, the contacting faces of the valve seat, valve member and casing being in planes transverse of the flow of the fluid "said valve seat being free to float in all directions.

V 18. A valve comprising a casing with a the path of the fluid and a valve seat surrounding said port, said valve seat interposed between the valve and the casing, the contacting faces of the valve seat, valve member and casing being in planes transverse of the flow of the fluid} said valves each being free to float in all directions, and elastic means foruholding' the, valve member, the

valve seat andthe casing in contact one with the other.

Signed by me at New York city, N. Y., this 20th day of December, 1918.

WYLIE GEMME L WILSON.

Witnesses: I p

Roy THOMAS STRABZAN, MARGARET VOGEL.

port therethrough, a suitable valvebisecting