US1644093A - Control valve - Google Patents

Description

Ot- 4 1927' H. w. sHoNNARD CONTROL VALVE Filed June 25, 1925 4 Sheets-Sheet 1 mwmw@ INVENTOR ,www0 MJ/fo/vA/ARD A BY M. ATTORNEY 1,644 093 Oct' 4 1927-' H. w. sHoNNARD CONTROL VALVE Filed June 25, 1925 .4 sheets-sheet 2 INVENTOR H/wozo MS//O/wvnfeo ATTORNEY oct. 4, 1927.

rl-l. w. sHoNNARD CONTROL VALVE Filed June 25, 1925 `4, sheets-sheet 3 1644093 oct. 4,1921. H. w. SHONNARD CONTROL VALVE Filed June 25, 1925 4 Sheets-Sheet 4 ATTORNEY Patented Oct. 4, 19V-27;

UNITED STAT-Es ,y 1,644,093 lala'rI-lala'r OFFICE.

HAROLD W.A SHONNARD, OF MONTCLAIR, NW JERSEY, ASSIGNOR TO ELEVATOR SUP- lLIESA COMPANY, INC., A CORPORATION OF NEW JERSEY.

CONTROL vALvE.

application area rune 25,' v1925. serial No. 39,580.

The present invention relates'to a yvalvemechanism and more particularly to a control valve' which is especially adapted for use i in connection with elevator door operation 6 to control the passage of pressure fluid to and from vvthe motor mechanisms operatively connected to the elevator shaft doors.

It-isthe primary object of the present invention to simplifythe construct-ion of con- .trol valves and to provide t form of control Ivalve which is particularly adapted for use in connectionwith the operation of elevator doors, .and'which shallbe easy to manufacture. l5

Y v-ide a new and improved form of control valve in which parts of the mechanism may be read-ily adjusted in position or re laced by new parts when the parts thereo have become worn. 1

, Another object of the invention is to provide av new and' improved form ofV control lvalve in which'the use of leather washers or pistons and similar non-metallic parts is avoided, and in which the operating parts .of the mechanism aremade entirely of metal, i anddo not therefore, readily-becomeworn. I/Vith these and other objects lin view the inventionI comprises the various features hereinafter4 more fully described and -particularly defined in the claims. The various features of the invention are illustrated in'onection with the accompanying' drawings., showing the preferred form of the invention, in which:

Figure 1-is a cross sectionalview in elevation of. a valve embodying my invention;

' .Figure 21s a view in vfront elevation of' the device shown in Figure 1; y

Figure'3 is a plan view tion of the valve, in which the various-passageways in the valve ,are indicated'i'n dash lines; I

Figure 4 is a detailrview in section showing the 'supply pipe connection to the valve, and the supply passage in the valve;

. Figure 5. is a front view in elevation of a special forml of valve;4

Figure 6 is a view in elevation partly in section taken on'the line 6-6 of Figure 5; Figure 7 is a plan view of a modified construction of the control'valve shown with the top cover removed, and 1 i 8 .a .Setoel View in elevati@ actuating means for .the

v Figure Another object' lof vthe'invention is to pro-l of the top por-v in' enlar ed or extended to provide a. seat of the modified form of control valve shown 1n Flgure 7, together with the preferred form of operating means for the valvel Referring more particularly to the drawings the numeral 1() `designates a control valve embodying my invention, `which may be mounted in any desired manner in the elevator shaft or in connection with the elevator car. For the operation of elevator shaft doors, I preferably mount the control 05 valve 4upon a counterweight rail or on one of theguide rails in the shaft, and connect to the control valve a trip lever 12, whereby the valve may be operated through thecon-l tact of any suitable operating means conne'cted with the elevator car. The trip lever 12 may be mounted on or pivotally connected tothe valve in any desired `manner, -as by means of a pin 14 connected to the casing or attached to a bracketl connected to the valve. Integral with ythe tripping lever 12, or suitabl connected thereto, is an arm or lever 18 a aptcd to swing or pivot on the pin 14 withv movements of the lever 12, whereby the operation of the valve is controlled, as willbe hereinafter explained.

The control valve 10 comprises a centralv member or casing 20 in which there areone or more openings or ypassageways 22 which extendthrough the casing as 1s shown in Figures 1 and 3. To the top of the section or casing 20 is connected a -cover portion or casing 24, serving to provide an exhaust chamber 26 at the top of the valve. In the top ofthe casing 24 is an opening 28 which 9 is preferably screw threaded so as to permit an exhaust pipe to be connected thereto through a connecting member 30, having a corresponding screw threaded portion 32.

In the central portion of the member 20 is a passageway 34 extending from the top to the bottom of the casing 20 and having an enlarged opening 36 at the bottom or lower end thereof, into which a member 38, serving `as a valve holding means, may be screwed. The upper portion ofthe opening 34 is similarly enlarged to provide an op'en- 1n 40 into which a corresponding valve ho ding member 42 may be screwed or other'- wise inserted in place.`. In the valve holding member 38 is a central openin or passageway 44 which passes through' e mem- `ber, the upper portion of the passageway be- 1:6 ,for a ,all valve 48, which is retained in" place between the smaller or central portion of the opening 34y andthe valve seat 46.

At the lower portion ofthe casing 2 0, ,at which the central opening 34 is enlarged to 57 provide the chamber or opening 36, the passageway 34 is preferably roundedv or beveled so` as toprovide a seat 50 for the ball 48,', 4 i whereby'when'the ball 48 is moved'upwardly it closes the'central 0r vsmaller portion of the passageway 34, as will be hereinafter' more fully described. By 4the movement of the vball 48 to its seat 50, communication be tweenl the central opening 34 and the operi-A ings 22 through thechambe 36 will be cut' '15 oil", thereby cutting off communication of the passageway or -opening- 34 with the exhaust chamber 26. At the portion'of the central Dpemn'g 34,

' at which it is enlarged to provide the cham- 25 the valves, adapted to lift the ball valve 54'l '20ber or opening'40, I provide a .valve'seat 52 on which a ball-valve -54 is. adapted to seat. In the' chamber or opening 34 between the ball valves 54- and -48 I' provide a 'suitable connectingor operating means between from its seat when the ball valve 48 is raised. For this purpose I preferably employ a pin 56, of a length slightly greater than the dis'- tance between the surfaces of the ball valves y 54 .and` 48 whenl seated upon their 4seats 52 @seat 52, whereas when the ball .48 is seated upon its upper seat' 46, the pin 56 will holdv lthe ball 54 away from the seat '52. The pin 5.6L is preferably cylindrical in shape and -is of suiicient diameter with respect vto the .opening between the seat 50 and the ball 48,

when-seated on its lower seat'46, that the'pin willnot be able to pass between them.

In the. cas-ing 20 connected to the'central portion .of the passageway or chamber 34 is a passageway 58, whichpasses referably through the casing atright ang es to Vthel passageway or opening 34, and isconnected to a pipe,'leading to 'themechanism to be operated, through a passageway 60 in' the valve easing.- The passageway 6() -may be' connected to the pipe'leading to themotor mechanism for operating the elevator doors, by any suitable form of connection62. .A passageway 64 inthe casing similar .to the passageway 58, `passes into the'V chamber 66.` at. the portion ofthe enlarged opening 40,.-

forme'd between the valve 'casing' andA the lclosure member 42. The passageway 64 is- .connected to a supply pipe through a connection 68 similar to the connection 62, whereby pressure fluid from af suitable source may be conducted to the control valve.

roximity to its seat 52 by means of a spring 0, which may be held.' in place in a central omitted in Vconstructions in which'the valve l c i is to be'employed in uprightfposition sinceA -tli'e -force of lgravity will carry'the ball member 54 toits seat-52 after the' bal-1 valve hasl been operated, but it is' t0 4be understood that in constructionsin which thefv'alve s to be employed in other than upright, position' vthe spring member70 must be .Yem-

ployed to properly seat the ball- 54. In l order to operate theball valve 48 and parts connected therewith, by means of which"v the operation of the valve l0 is controlled, I proi in the closure member 38 inthe opening 44';

vide a pin 76, 'which is slidably mounted therein, whichis adapted to. raise the ball valve 48'.whenactuated or raised through the movement of a set screw.4 or other slutable lifting member 78, which is adjustably yheld in position in the arm memberl18.

In order to locktltemember 7.8 in osi-- 'I tion in,the'a rm 18,` I may employ a loc ing' means, suchfas a set screw'Sll-positioned in theouter portion-of the arm 18, between the branches or side ,.members82, -84 thereof-l`- which are; fo'rmed by a'groove'or opening 86 -througha portion of the arm, as' shown in Figure 1. v f

In order to retain the lever 12 normallf-yf.

in its extended'position a' spring l88 is pre erably provided between thearm 18 and the l casing' member 20, the spring being, prefer.A

ably held in position by meansof a lug 90 .'on 'the arm 18, and 'a corresponding lug 92 on! thecasing`20. In order to limitthe outward movement of. the level` 12,- aV seat" or shoulder 94 may bef'prvided on the down-I wardly projecting 4'bracket or memberl 16, with which a portion of the/arm'l'S'is adapt# ed'fto Contact, thereby preventing `lthe lever' 12,l connected therewith 'i from moving 'b'eyond the corresponding position in rotatiiig on the pivot orpin 14. Inorder-to limit the inward movement of the l'everf12,- on

the'other yhand,so .as to\ prevent the lever.

from being bent when the valves* 54 and. 48 have been raised, a roller 98 of 'hard rubber or other resilient material maybe .provided which is preferably psitioned at the' lower -en'd'of the bracket 16. The rolle-r is -prefcr- 7 ably adjusted in' position so that when the#` ball valve 48 is on its seat 50, being held) l thereon' by means ofthe pin 76 and the supporting screw 78, the arm of the lever 12 will be nearly,- but not quite, touching thel roller.,l Should the lever 12 be bent further,

as by a suddenblow, for example, the lever will contact with the roller-98, which willprevent the a-rm lfrom being brokenor bent out, 'of shape.

trated in Figures 1 and 4 is as follows:

Assuming that the control valve 1 0l "is v A Theoperation-ofthe formof '-valveillus-A I l The ball 54 is preferably held in place in through the'connection 62 to a pipe leading to a motor mechanism, connected to the shaft doors to be operated. Assuming also that the connection 68 leading to the passageway supply. Vhen the elevator car in the shaft has been stopped at a suitable distance fr omv the desired landing so that the tripping mechanism, connected therewith, may actuate thelever 12, the mechanism is operated a'nd the lever 12 is thereby moved to 'the' right or in a counter clockwise direction,

with reference .to Figure 1. By this move-- ment the arm 18 is raised against the force of the spring 88, liftingtthe set screw orlifting member 78 attached to the arm and the stem 76, which is therebyi brought into contact with the ball' valve 48, which is raised from its seat 46, thereby lifting the pin 56, in chamber 34, into contact with the ball 54, which is in /turn lifted from its seat 52, against the force of the spring 70. By this movement the ball 48 is brought against its upper seat 50, thereby closing oil' com-` munication between chamber 34 and exhaust chamber 26, through openings 22. lVhen the valve 54 is raised from its seat 52 the chamber 34 is brought into communication with the` pressure Huid supply pipe through the passageway 64 which communicates with the chamber l66, whereby the pressure iuid passes through the connection 68 through the passageway V64 into chamber 66 and into chamber,34,'which is directly connected to the passageway' 58, through which the pressure fluid flows into the passageway 60 and 'through the connection 62 to the engine or motor mechanismwhich is connected to the elevator doors. -Through the passage of the pressure -iluid to the motor mechanism, the

latter is operated, whereby the elevator doors are caused to open.` f

When it is desired to close the elevator doors, the mechanism or means in the eleva- 'lso tor car is operated to release the tripping lever 12 which, with reference to Figure 1,. is moved by the spring 88 to the left, where- "by the arm 18 isbrought downwardlyuntil the projection 100 on the ar'm comes into contact with the seat 94.A The stem 76 is thereby released by the lifting member 78,

and returns to .its original position, whereby the ball valve 48 moves away-from ythe seat 50' and drops to itsseat 46 in the member 38,

elevator shaft, for example, and is connected chamber'36, fromwhich it passesflthrough passageways 22 into the exhaust chamber 26 at the top of the control valve, and from the exhaust chamber it passes through the open` ing 28 and connection A30 into an exhaust. 64, is connected through a pipe to an air -pipe compressor or other source of pressure fluid. j

to make adjustments in the control valve the set screw 8O is turned -to vunlock the set `screw or supporting member78`which may Should itbe desired to res-et the valves or then be raisedv or lowered by suitably turning the set screw. Afterl the adjustment has been made the locking screw v80 is again turned into locked position, whereby the set 'screw 7 8 is rigidly'held in position and prevented from turning.

'nsl

In the application ofthe control valve Ato the operationof elevators I preferably employ aspeial actuating means for the valve comprising a lever 112 having a roller 114 thereon which-is ada ted to contact Vwith aV the formof operating cam, it will obviously be necessary only to change one cam for the whole shaft instead of a large numberrof cams, asf would .be required if one [cam were used for each control valve in the shaft.

The preferred form of operating cam l which may be connectedunder the elevator car is shown in Figure 8, being indicated bythe numeral 116. The cam is preferably mounted on 'a shaft or pistn 118 operating l in a cylinder 120 by means of pressure fluid. When it is desired. to operate a control valve at a. particular landing pressure fluid is passed into the cylinder 120 through the means, whereby the cam 116 will be moved outwardlyl so .as to contact with the roller l114, thereby operating the control valve in the same manner as has been above set forth.

until itis desired .to close the elevator door through'the operation of the control valve which is accomplished by turning the valve or other, controlling means, so 'that pressure fluid will be exhausted from the cylinder 120, whereby the spring (member 122 mounted on the rod .124between the nut 126 and the bracket 128 vwill return the cam 116'to 'its inope ative position.

The modified form of `control valve which is shown' in Figures 7 and 8 is adapted for .fthe operation of two cylindersor operating mechanisms and is especially adapted in loperation of a suitable valve or by`other `The cam 116 remains in extended position 'v connectionA with elevator operation for the l operation 'of a Burdett-Rowntree mechan'isn'i, in which a piston in the cylinder is operated bypressure fluid on both sides of Itherpiston tot open 'andclose the elevator door or doors.l In Figure 7 a cylinder of this form is diagrar'nmatically#V indicated in order to clearly illustrate theoperation of the modified form of control valve in this connection.

The control valve/ comprises double set opposed positions or in other words, the

operation of one set is exactly the reverse of the operationv of the other setvin'the two po-A sitions of the-actuating lever, as'i'ndicated in full and dash lines in Figure 8. .The construction of the device maybe made clear in connectionwith the description 'o f the operation of the modified form of control valve.

Assuming that the cylinder 130 indicated v in dash lines in Figure is mounted in conl nection with the elevator 'shaft doors vat a landing through the piston vrod, 132 at- -tached'to the piston 134 in the cylinder. A pipe 136 is connected/from the head end of the cylinder to a port -of the control valve lals j the control valve.

to be hereinafter 4more fully described-and a pipe 138 is connected from the crank end lof the cylinder 130 to a corresponding port in When it is desired to operate the control valve 4at any, particular landing, the car having-been stopped within a suitable distance of the desired landing, the cam 116 is extended by means of vvthe mechanism connected thereto through the i operation of a suitable lever or control valve and contacts with the roller 114 on the vlever orarm 112. The arm 112 is ,thereby turned in '.a counter-clockwise direction about the pivotu140 against the action of the spring 142, whereby a-pin 144 similar to the pin 44 of Figure 1, lifts the ball 148 from itsl seat` 146 which in turn liftsl the pin 156 which contacts with the ball valve 154, therebyl lifting the latter from its seat 152.- By this means pressure fluid passes from the pipe connected to the connection 168, passest around the ball 154 and into the chamber around the pin '156 and through the .passage- I way 158 and from thence through passage-A way 159 to the'passage or port 160 connected to the pipe 138, whereby the air orother vfluid pressure Ipasses intothe -crank end of. the `cylinder 130, forcing, the piston' 134 toward the head end of the cylinder.

Simultaneously with the passage; of pressure Huid into the crank end of cylinder 130,

pressure fluid is .exhausted from; .tl- 1e head' end of the cylinder and passes through the connection 162 to a passageway 163 and from thence through the passageway 164 'in vthe control valve-.to the chamber around the pin 166 in the .valve andl from thence around the ball valveA 149 intothe central; passage.-

' way 182, 'which communicates through one or'more `pas'sageways-17O with'an exhaust chamber 172 similar to the exhaust chamber 26 of Figure 1. The pressure Huid is'thexn' doors the reverse action takes place.

toa-.

When it is desiredto close thel elevator cam 116 isl retracted, whereby the .roller 114 The n 4and the lever 112 connected therewith, move of -valves which are adapted to operate in.

into 4the position `indicated in dash lines in Figure 8, whereby the pin'144` moves down wardly, permitting theball 148 to seat on the lower seat 146 and the pin 156 moves downwardly to permit seating of the ball va-lve 154, thereby. closing communication between the pipe attached to the'connection 168.and the central chamber 'around the'pin 156. Simultaneously the pin 145 Vis moved -S0 upwardly byI av projection on the arm 112 Y indicated by the numeral 176 in Figure 8,'A

whereby' the ball4 149 is lifted from its' seat and moves the pin 166 upwardly against the ball valve 155, which is raised fromiits seat,

whereby pressure Huid from the. pipe at tachedto the yconnection 168 passes through the inner passageway 180 into the chamber. around the therethrough into the passageway 163 and from thence through the pipe 136 to the head end of vthe cylinder 130. By this means the piston 13 4 is moved toward the, crank end ofthe cylinder and pressure Huid is exhaustedtherefrom vthrough the pipe 138 into the passageway 160, through passage'- way-159 to the passageway. 158 and'from thence to the chamber aroundthepin. 156 and passes downwardlyI to the chamber around-the ball 148 which connects with the i passageway 182 and from thence the fluid l pressure passes upwardl through the one or more, passageways 1 0 to the exhaust "chamber 172 at the upper part of the valve, .from whence it exhausts through the conf nection 174 to the exhaust `It .is to be understood that while the/forms.

"of control valve constituting' myv invention have been described as appliedin'connection with elevator door operation," the valve is also-adapted forother uses such as signalling devices, or for other p rposeswhere a con-- trol valve'is desired, as will be apparent to those skilled in the'art.

vice to the particular use inconnection with I do notfdesixjel .therefore to llnnt the application of my vde which the formsof the .valve have been de` scribed. It is to be understood also that i various changes or modifications may be made in the device without departing from the spirit or scope of the invention as'defined in the claims.

1 Ina control valve,a casing, a chamber 1n said casing, means', for connectln said chamber to a source of pressure fiui vsupply, a second chamber in said easing, a passa'geway between said chambers', means for connecting said passageway with a pressure fluid operated mechanism, a valve in the first named chamber for opening and closing comm'unication with said passageway, la valve in valve in the second chamber externally to said casing, and means in said ment of the valve inthe second chamber.

said second chamber/for opening and clos-4 ing communicationwith said passageway, an exhaust chamber, means for exhausting pressure fluid from said second chamber to said exhaust chamber, means for operating the assageway for operating the valve in the rst named chamberduring a portion only ofthe move- 2. In a control valve, a casing,fa chamber in said casing, means for connecting said chamber to a source of pressure luid sup ply, a second chamber in said casing, a passageway between said chambers, means for connecting said passageway with a pressure iluid ope-rated mechanism, a valve -in the first named chamber for opening and closing comlmunication'thereof with said passageway, a

Valve in the said second chamberl for opening and closing communication thereof with said passageway, means for dependently operating said valves in opposed positions, an

exhaust chamber in said casing, and a` passageway between said exhaust chamber'and said second chamber, 'whereby when the valve in said second chamber is opened ressure fluid will be passed to said exhaust c amber.

3. In a control valve, a casing, a chamber v in said casing, means for connecting said T chamber to a source of pressure -fluid, a secy sageway for lifting thelirst named valve' to ond chamberin" said casing, a vconnecting passageway between said chambers, means, for connecting said passageway with a pres-. sure fluid operated mechanism, a valve in the irst named chamber for opening and closing communication between said first' named chamber and said passageway, means for nor'- mally holding said valve in closed position,

a valve in said second chamber for opening and closing communication between said second chamber and said passageway, a seat forthe last named valve' adapted for'holding sai-d last named valve when in open position, an exhaust chamber in sa/id casing, a passageway connecting said exhaust cham- -ber with said second chamber, a lever connected to said casing, means operatively connected to said lever for liftingthe said last naine Valvey from said seat to close-'coinmunication of said second chamber withvsaid passageway, whereby communication between said passageway and said exhaust chamber is cut off, and means in said pasopen communication of said passageway with.

the first named chamber when the said last amed valve' is closed.

4. A control valve comprising a casing, a

.interdependently voperatin chamber in saidcasing, a passageway in said casin communicating with said chamber and a apted to be connected to a source communication between said second chamber and said connecting passageway,.a s eat in the said second chamber for normally holding the last named valve in proximity to' said connect-ing assageway in open position, an exhaust clliamber in `said casing, a passageway connectin said exhaust chamer with said second c amber, a lever pivotally connected to said casing, an arm connected to said lever, stop meansl for limiting outward movement of said lever, spring means for normally retaining said lever in.

its outward position, meansv connected to said arm for lifting the said last named valve fromthe said seat and to close the valve when said leverv is operated, and means in said connecting passageway for lifting the f lirst named Valve, thereby opening the valve,

when the said last named valve is lifted through the operation of said lever. y

5. A control valve adapted for simultaneously 'controllin inlet and' Vexhaustl from two chambersvw ich comprises a casing, an intake chamber iii said casing, an exhaust chamber in said casing, two sets of valves in said casing, each set of valves bein adapted to maintain non-communication o said intake chamber with said exhaust chamber,

means in said casing for interdependentlyoperating the valves in each set of valves, and means vexternal to the said casing for the valve sets to reverse the action thereo ,so as to attain opposed o'r reversed action of the two sets of valves, whereb exhaust from one of the saidl chamberswilltake place simultaneously with intaketo the other\,of said chambers and vice versa.

6. AV control valve comprising a casing, a chamber in said casing, a paageway' in sai and adapted to be' connected toa source of pressure Huid, a 'second chamber in @saidcasing, a plurality of connecting passageways between the said chambers, a passageway connecting each of saidconnecting passageways with conduits leading to pressure d. 12o casing communicating withsaid chamber fluid operated mechanisms, ball valves in the first named chamber adapted'toseat4 in each of said' connecting passageway/s thereby to- 6' i' 1,644Qoes control communication between s'a'id first in open"position, an exhaust chamber in said named chamber and sa1d connecting assagecasm a passageway-connecting said-exhast ways, ball valves 1n the sald secon chamcham er w1th `sa1d rsecond chamber and ber adapted to seat in said connecting pasmeans external to the said casingoperatively j tion between said second chamber and said the operation thereof. j

sageways and thereby to'close communicaconnected tojthe said valvesior e'ontlolli,ng'-1-l A r` y Aconnecting passnew'ays, seats in the said f Signed at'New York cityYvQ-'lthis v24thf`n" l* Y second chamber or normally holdin the vday of June rv1925.

' last named valves in proximity to`s ai con- 10 necting paageways whensaid valves are l A' i

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