US650971A

US650971A - Induction-valve.

Info

Publication number: US650971A
Application number: US69928198A
Authority: US
Inventors: Willard R Green
Original assignee: Individual
Current assignee: Individual
Priority date: 1898-12-14
Filing date: 1898-12-14
Publication date: 1900-06-05
Anticipated expiration: 1917-06-05

Description

No. 650,97I. Patented lune 5, |900.

W. R. GREEN.

HNDUGTION VALVE.

Application filed Dec. 14, 1898,;

THF. Nonms PETERS co, Pr-.uTuLl-mq, wAsumsToN. n. c.

Patented lune 5, |900.

No. 650,97I.

W. AH. GREEN.v

INDUCTION VALVE.

(Application filed Dec. 14, 1898.)

2 Sheets-Sheet 2.

(N0 Model.)

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` NITE-.D STATES PATENT FEICE.

VILLRD R. GREEN, OF DENVER, COLORADO.

INDUCTION-VALVE.

SPECIFICATION forming part of Letters Patent No. 650,971, dated June 5, 1900.

Application filed December 14, 1898. Serial No. 699,281. (No model.)

To @ZZ whom, t may concern:

Be itknown that LWILLARD REED GREEN, a citizen of the United States, residing at Denver, Arapahoe county, State of Colorado, have invented certain new and .useful Improvements in Induction-Valves,of which the engine to balance and actuate the valves' and may be either-with or without the assistance and coperation of the weight or pressure of the atmosphere.

The invention consists in so using said pressure and of mechanical parts and arrangements for accomplishing that object, and I preferably employ parts or pistons of different areas or acting under different relative pressures of either the same or different mediums with means for alternately or successively applying said pressure to alternately or successively balance and unbalance said parts and the main or induction valve controlling the supply or passage of the working medium to an engine or other mechanism, whereby said valve is seated and unseated by the pressure of said medium controlled through the action of said mechanism.

One embodiment of my invention, and a preferable form, is set forth in the drawings forming a part of this specificatiomin which- Figure l represents an elevation, partly in section, of said form. Fig. 2 represents another form of mechanism for actuating the cylinder S, shown in Fig. l. Fig. 3 is a plan View showing a cylinder 8 divided longitudinally, taken on the line a a, Fig. 2. i

In the drawings, 1 represents a cylinder of an engine. 2 is a steam or other chest or closed pressure-chamber thereon for the ad- .mission of the working medium tovsaid cylinder. S'is the port connecting said chest with saidcylinder. 1

4 is the port admitting the working medium to the chest 2.

5 is the ind notion-Valve controlling the port o. This valve may be of the piston form or may be .a puppet or other form of valve. Either attached to the top of the valve 5 or placed in any desired relation thereto and connected therewith isa piston 5a, of larger area than the bottom or the seating area of said valve 5 in the port 3. It is obvious that the valve 5 and the piston a may be made integraler may be in two separate parts and that the top and bottom surfaces of said valve and said piston may be at anydistance apart as desired.

6 isa piston connected with the valve 5 by the rod 7.

8 is a cylinder, open at both ends, adapted to fit around the top portionof the valve 5 and the piston and to permit longitudinal movement of the piston 5 therein, so that said piston may slide independently of said cylinder longitudinally therein and said cylinder may move past said piston'as desired and may be brought into contact with the walls of the chest 2 about the seat of said valve.

The upper portion of the chest 2 is formed to constitute or bears upon its Wall a cylinder 9, in Vwhich the piston 6 moves. Said cylinder may be above or upon the chest and may be either independent thereof or integral therewith. The cylinder 9 is provided with a pipe connection l0 or other means, as desired, for regulating the volume and pressure of the air in the top of said cylinder, and the top of said piston 9 may have a connection open to the atmosphere, or the air therein may be confined or put under any degree of compression desired by any well known means, and the air in said cylinder may be used to assist in actuating or causing longitudinal movement to the piston 6 and valve 5 or in cushioning or limiting the travel of said valve.

Any well-known means may be used to ac- Ytuate or cause longitudinal movement of the cylinder S-as, for instance, lever-arms 1l, attached to the rod or shaft 15, having a bearing 16 and attached to means operatively connected with the engine-shaft for actuating or rocking said shaft. Said lever-armsv engage with projections upon the collar 13, sliding` on the rod 7 and having arms 14, attached to the cylinder 8, whereby the cylinder 8 is IOO callsed to rise alld fall by the turning of the rod l5. This may be operatively eolllleeted with the engine-shaft or witll any otller lllecllanism.

The cylinder 8 lllay be caused to come in contact witll the floor or wall of the chest 2, or a rilll or slloulder 2O lllay bc forlned or lnade around the seat l.) of the valve 5, adapted to lit the illller walls of the cylinder S alld to be illelosed or surrounded by said cylinder and wllell so inclosed to close such cylinder at the elld so ill Contact with said riln, whereby the working lllediulll ill the chest 2 can ollly ellter said cylinder alld exert pressure upoll the piston 5 through the opposite or open elld of the cylinder S. 'lhe riln or shoulder 2U lllay be made independent of or illtegral witll the walls of the chest 2 alld preferably projects su ftieicn tly from said wall to perlllit the cylillder S to pass over alld ellcirclc the end or edge of said rim witllout ci'llllingillto contact witll the wall of the cllest 2 proper, so tllat said cylinder relllains substantially a Heating cylinder balanced at all tillles ill the working medium.

Arms or guides 3G may be formed upon or attached to the chest 2 witll suitable bearings to act as guides to the cylinder S, alld lllgs or stops 37 may he placed upon the walls of the chest 2 or elsewhere to limit the travel of the cylinder S or to serve as bearings for the thrust thereof.

'lllc operation is as follows: Assn ming the ellgine to be working under a pressure of one hundred pounds, there will exist a pressure of one hundred pounds ill the cllest 2. Assuming the area of valve 5 at the seat lil thereof to be equal to olle square illcll, it will tllerefore llave a pressure of one hundred pounds thereon. Assuming the pistoll l to be of lalger area tllan the seat of valve 5 and to have a pressure of, say, one hundred and ten pounds of said working medium thereon, the pressure of the working lnediulll will tllerefore cause all upward movement of the piston (i ill the cylillder t), thereby lifting the valve 5 from its seat through the action of the rod 7, connecting said piston with said valve. Hence, so far as the aetioll of valve 5 and piston (5 alolle is concerlled, valve 5 would always stand open under the pressure of the working lllediulll upon pistoll 6. Steam or otller working medium will therefore be adlnitted from the cllest 2 to the cylinder l through the port When desired to close said port, the cylinder S, inelosing the piston 5", is caused by the movement of the arms ll to move to a contact witll the floor of the chest 2 or with the liln 2t), surrounding the seat of valve 5, thus forming acllamber ill the lower portion of cylinder 8. Thus the piston 5, moving in cylinder 8, is open to the further actioll of the workillg lnediuln only upon the top of said pistoll through the open elld of cylinder S. As the area of the piston 5 is greater tllan tile arca of valve 5 or than that of the piston G, it will carry a greater pressure thereon tllall piston 6 alld will cause the valve 5 to be seated ill the port 3 against the resistance of the pressure upon pistoll G. This will occur whenever the actioll of the eylillder 8 by coming ill contact with the walls of the chest transfers the controllillg area alld pressure to the piston 5n alld alternately to piston t5 when moving from contact with the walls of said cllest.

For a new charge of working lllediulll or steam the operatiolls al'e repeated. 'llle adlllissioll of the working lnediulll tothe enginecylinder l is permitted by raising the cylinder S through the operation of lllecllallislll actuating the arm 1l alld operatively collllected with the engine-shaft, whereby the movement of the cylinder 8 is regulated to be at any poillt of cut-off desired. Upon moving cylillder 8 away from contact with the floor or parts of the chest surrounding the seat of valve 5 the piston 5"L is balanced by the equal pressure of the working medium upon its two sides, alld the pistoll 6 being of greater area tllan the seat of valve 5 at once lifts valve 5, permitting the inflow of the working lnediulll below the elld of cylinder` S and through valve 5. This continues so long as cylillder S relnaills raised alld to any poillt of cut-off desired. It will thus be seen that the action of the valve 5 through the pistons 51L and G results from alld is controlled by the movement of the cylillder 8, wllicll may he regulated to be ill any relation to the movements of the engine-shaft desired and at any point of cut-olf. As the cylinder S is substantially balanced in the working mediuln, relatively small power will be rcquired to actuate said cylinder. rllle friction thereof lnay be reduced to a minimum. As the efiiciency of cylinder S depends upon the completion of its circuit around pistoll 5 alld the closing of its contact at one end with the walls of the ellest, it will be seen that any means employed to aecolllplisll tllese objects will fall within the invention. One method of actuating said cylinder and of applyingthe functions thereof, which may eifel' solne advantages, is set forth in Fig. In this illstance the cylinder S is shown cut ill halves longitudinally. Thehalf 8 may be fixed upoll the floor of the chest 2 alld the half S be a'rranged to move laterally away from and to the half 8, or both parts lnay be moved, if desired. By this means the same operation and effect are produced upon the piston 5 as in the illstance mentioned of lnovillg said cylinder longitudinally. Ally known means may be used to lnove the parts of said cylinder illto and out of contact with each other. Mechanism for the lateral lnovelllent is set forth in Figs. 2 and 3, 2l beinga cylinder placed longitudinally with the movement ofsaid parts of cylinder S, to which it is operatively collnected tllrough the piston 22, movillg ill cylinder 21, and the rod 23 connected with said part of cylinder S alld passing tllrougll the pistoll 22 alld the wall 2t of chest IOO los

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2. One side ofthe cylinder 2l maybe eX- hausted of air, or the air therein may be put under any desired compression, and the other end of said cylinder may be under the pressure of the` operating medium in chest 2, so that the power of the mechanism applied to actuatethe rod 23 may be reduced to a minimum and the pressureof the workingmedium or of the atmosphere may be used to cushion the contact of the parts of cylinder S.

I claim and desire to secure by Letters Patcntl. The combination of avalve, a cylinder, a piston fitting said cylinder and connected with said valve, a port closed and opened by said valve, a chest above the piston and cylinder, and means for admitting a working medium continuously thereto, and .means whereby to control the flow ofthe working medium to said cylinder below the piston, substantially as set forth.

2. In valves, a valve made integral with or attached to a piston of larger area than'the face of said valve, a seat for said valve, acylinder adapted to fit and coperate with said,

piston, and means .for applying the pressure of the working medium constantly to one side and alternately to kboth sides of said piston, for either actuating or for balancing said piston and said valve, substantially as set forth.

A valve, a piston attached to the stem of said valve a cylinder adapted to fit and to coperate with said piston and means for applying the pressure of theworking medium alternately to one and to both sides of said piston, for actuating and also for balancing said pist-on and said valve, substantially as set forth.

4. A valve, a piston attached' to said valve, a movable cylinder adapted to tit and coperate with said piston, in combination with means foi-moving said cylinder longitudinally in directions parallel with the movements of saidtvalve, whereby the end of said cylinder is alternately closed and opened and the pressure of the working medium is applied to actuate and to balance said piston and to move said valve.

5. A valve, a piston attached to the stem of said valve a cylinder adapted to fit and cooperate with said piston, means for applying the pressure of the working medium to one or to both sides of said piston for either'balancing or varying the pressure to produce one of the reciprocating movements ofv said piston,in combination with mechanical means for producing one of the reciprocating movements of said piston, whereby said valve is seated and unseated, substantially as set forth. l

G. A valve, a piston attached to the Istem of said valve a scat for said valve, a piston operatively connected with said first piston, independent cylinders adapted to tit and cooperate with said pistons respectively, in combination with means for varying the effect of the pressure of the working medium alter- 4nately upon said two pistons, whereby said -pistons are given a reciprocating movement and said valve is seated and unseated, substantially as set forth. l

7. A valve,a piston attached to the stem of said valve a seat for said valve, a movable cylinder adapted to fit and coperatewith said piston, a second piston operatively connected with said rst piston, a fixed cylinder adapted to t and coperate with said second piston, and a valve-chest in combination with means for moving said movable cylinder longitudinally into and out of contact with a wall of the chest, whereby the end of said movable cylinder is alternately closed and opened and the pressure of the working medium is applied alternately to balance and to actuate the piston therein alternately with and against the resistance of said second piston and said pistons coperate to seat and vunseat said valve.

8. A valve, a piston attached to the stem` of said valve. a cylinder adapted to tit and receive the movement therein of said piston, said cylinder being closed at its upper end and containing in said upper end an elastic medium, as a gas or fluid, for cushioning or limiting the movement of said piston therein, in combination with means for regulating or partially releasing the pressure of said piston upon said elastic medium; whereby the opening or upward movement of said valve is cushioned.

9. The combination of a valve, made integral with or attached to a piston of larger area than the face of said valve, a seat for said valve, a movable cylinder adapted to fit and coperate with the movements of said piston and to be moved to a contact with or to surround said seat wherebya chamber is formed below the piston and the working medium admitted to or excluded therefrom, substantially as described.

10. A valve, a piston attached to the stem of said valve, a seat for said valve, a movable cylinder adapted to fit and coperate with said piston, a second piston operatively connected with said first piston, a fixed cylinder adapted to fit and coperate with said second piston, in combination with means for moving said movable cylinder; whereby the chamber inclosed by said cylinder and below the first piston is alternately closed and opened and the pressure of the working medium is appli-ed alternately to balance and to actuate the piston therein alternately with and against the resistance of said second piston and said pistons coperate to seat and unseat said valve.

In witness whereof I have hereunto set my hand, in the presence of two Witnesses, this 28th day of November, 1898.

WILLARD R. GREEN.

WVitnesses:

LEE D. CRAIG, JOHN WARD NYE.

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