US1888866A

US1888866A - Control means

Info

Publication number: US1888866A
Application number: US505713A
Authority: US
Inventors: Russel Philip Sherman
Original assignee: Detroit Lubricator Co
Current assignee: Detroit Lubricator Co
Priority date: 1930-12-31
Filing date: 1930-12-31
Publication date: 1932-11-22
Anticipated expiration: 1949-11-22

Description

NOV. 22, 1932. p 5, RUSSEL 1,888,866

CONTROL MEANS Filed Dec. 51. 1930 Fig.1.

so 63 aa 3a 29 36842527 provements in so. 'tion, but withcertain of the internal elements p r 'out1et lportsf6,\7 preferably two in number,

Patented Nov. 22, 1932 UNITED STATES PATENT OFFICE IHILIP SHERMAN RUSSEI), OF DETROIT, MICHIGAN, ASSIGNOR T0 DETROIT LUBRICA- TOB COIPANY, OF DETROIT, MICHIGAN, A. CORPORATION OF MICHIGAN CONTROL MEANS A Application filed December 31, 1980. {Serial No. 505,713.

My invention relates to new and useful imressure control means, and more particular y to a device for regulatmg or controlling the pressure at which a flllld is delivered. 1

An object of my invention is to provide a device which will prevent delivery of fluid from a pressure source at a pressure below a predetermined minimum and at a pressure above a predetermined maximum. Another object is to provide a device having means to adjust the range between minimum and maximum pressures at which fluid will be delivered. e Another object is to provide a device having adjustable means to determine the minimum or maximum delivery pressure without varying the range between minimum and maximum delivery pressures.

The invention consists in the improved construction and combination of parts, to be more fully; described hereinafter and the novjelty'of which will be particularly pointed out and'distinctly claimed.

In the accompanyin drawing, to be taken as a part of this spec fication, I have fully and clearly illustrated a preferred embodimentofxmy invention, in which drawing 'F igure 1 is a vertical central section through the regulating device of my invenshown inl-elevation', and a Fig. 2 is al view insecti'on on the line 2-2 body mem er offmy device having an internal chamber 21 with a plurality of inlet ports 3, b wh chi i noirma tly la d y a P h as. 'fl it d, vr' u gauge own) -may-beiattached thereto to im re sure within the chamber. he chamber are a plurality of and positioned in the end and sidewalls respectively of the casing, theport 7T5erving as a by-pass' outlet andbeing preferably substantially in linewith thdinlet port 3 to fanipple member 9 which is threaded or otherwise secured and sealed in an aperture 10 in the casing end wall. Withinthe bore 8 is an annular flange 11 forming an inwardly facing valve seat, and through the member 9 on the inlet side of the valve seat are ports or passages 12 opening transversely into the bore 8. The outlet port 6 is controlled by a valve member 13 having its stem guided in the'bore 8, as at 14, for reciprocation of the valve proper 15 to and from its seat, the valve 15 preferably being substantially conical. The member 13 has a stem extension member 16 having a socket 17 in the up er end thereof, in which, the free end oft e valve stem seats and is secured, as by a cross-pin 18, the upper end of member 16 extending into the bore 8 which is of enlarged internal diameter, as at 19, to guidi-ngly receive the end of member 16. Intermediate its ends the members 16, which is preferably cylindrical, is of reduced cross-section, as at 20, to provide an inward or downward facing annular shoulder or abutment 21 on the valve member 13, and for a purpose to be described.

The outlet port 7 is provided by the longitudinal bore 22 of a nipple member 23' which is threaded or otherwise secured in an aperture 24 in the casing side wall. Within the bore 22 is a sleeve or valve seat member 25. which is longitudinally adjustable therein, preferably by threaded engagement with member 23, as at'26. .Through member 25 is a longitudinal passage 27 which is constricted by an annular internal flange 28, which provides an inwardly facing shoulder forming a valve seat. Controlling the outlet port 7 is a valve member 29 which cooperates with the valve seat of flange 28, the

stem 30 of member 29 preferably being polygonal in cross-section, and is guided for reciprocation by the walls of passage 27. When thedevice is employed for'regulating or controlling liquid'pressure, the member '29 is preferably provided with a shallow groove or slot 31 extending across the valve seat so thatair or other gas which might trap with the chamber 2 and cause the pump or pressure creating means to lose its prime, Will be initially expelled from the chamber.

ing to move the same from its seat toward open position, is a resilient means32 preferably a sprm member of the coil type which surroun s the stem and the inner end of member 25. The spring member 32, which is under com ression, abuts the inner end of nipple mem er 23, and at 1ts opposite end engages a lateral surrounding flange or head member 33 rigid with the free lnner end of stem 30. Engaging and bearing against the member 33 or end of stem 3t), is one end of a lever means 34 which. is fulcrumed intermediate its ends and pivotally supported on a pin 35 extending there through. The pin 35 is threaded or otherwise rigidly secured at one end in a boss 36, or the like, projecting into chamber 2 from the casing'wall. Opposing the means 32 is a resilient means 37 which normally exerts a force slightly in excess of the force of spring means 32 so as to hold the valve member 29 closed. The means 37 preferably comprises a coil spring held under compression and which is seated at one end in an axial socket or recess 38 in a plug member 39 threaded or otherwise secured in an aperture 40 through the casing side wall below the aperture 24. The other end of the spring 37 surrounds a supporting finger or guide member 41 carried by the lever means-34 and engages the free end of the lever means 34 on the opposite side of its fulcrum from the valve member 29 acting to turn the same counterclockwise of Fig. 1 about pin 35 to seat the valve member 29. The lever means 34 preferably comprises a substantially vertically extending member 41 which is U-shaped in horizontal cross-section, having substantially parallel, horizontally extendingvarms 42 which extend laterally adjacent the opposite sides of the valve member 13 at the reduced portion 20in thepath of travel of the shoulder 21 so as to beena 44 preferably comprises a substantially cylindrical, 'circumferentially. corrugated, re-

silient, metal member or bellows having its 7 lower end sealed to the inner periphery of a ring member 45 which seats against and is sealed to the underface of an annular flange or shoulder 46 in the extension 43.

' The means or member 44 has a head or end Wall 47 to which the free lower end of the stem extension member 16 is secured, as at 48, so that the valvemember 13 is movable with and is operable by the means 44. The member 13 is preferably provided with a guide means 49 comprising' an a The casing 1 has a depending hollowopen pertured cross-bar ormember through the guide aperture 50 of which the extension member 16 reciprocably extends. Secured on and closing the lower end of the extension 43 is a.

icap member 51 having a peripheral, internally threaded flange 52 which threadedly engages the lower end portion of extension 43. Opposing movement of the means 44 and member 13 in response to fluid pressure in the casing and'normally tending to maintain the member 13 seated, is a resilient means 53, preferably a 0011s ring positioned within the bellows 44 and avingone end engaging the head 47 and being sup ort'ed at its other end on a s ring seat mem er 54. The spring 53 is hel under compression and the expansive force thereof is adjustable by an adjustment member 55, preferably a threaded plunger or screw which is threaded through a central aperture 56 in the cap member 51 in line with member 13 and-on the inner end of which the seat member 54 is supported. The outer end of the member 55 WhlCll is provided with a screw driver slot 57 may be enclosed by a cover member 58 r'emovably secured to the cap member 51.

The operation of my device is as follows: The device is connected in a delivery line for fluid under pressure, such, for example, as the liquid fuel delivery line of an oil burner, or the like, with the inlet 3 or 4 connected to the discharge side of a pump or other pressure means, with the outlet fileading to'the burner nozzle and with the outlet 7 connected to a conduit which referably returns to the source of supply. he member 25 is adjusted preferably on assembly, and then staked or otherwise fixed in adjusted position to determine the clearance between the shoulder 21 and the arms 42, which adjustment determines the difl'erential pressure between the opening of port 6 and the opening of port 7, i. e., determines the increased pressure above the pressure which causes initial opening movement ofmember 13 which will act through means 44 to move shoulder 21 into engagement with arms 42' to start opening movement of valve member 29. The adjustment screw 55 is then moved in or out to adjust the expansive force of spring 53 todetermine. the fluid pressure in chamber 2, I

pendent of and not varied by adjustment of the force of spring 53, then when the pump or other pressure means is started pressure will build up in chamber 2.. Any air or gas which has been forced into the chamber 2 by the II. Y

pump will be vented through the by-pass slot 31, which is too small to pass any quantity of liquid which would interfere with proper operation of the device. When the pressure m chamber 2 has built up to the desired minimum pressure, the pressure acting on means 44 will move the same and retract member 18 to open port 6. Should the pressure within chamber 2 continue to build up or increase to the desired maximum delivery pressure, then the pressure on means 44 wil have moved shoulder 21 into engagement with arms 42 and will have balanced the slightly excess force exerted by spring 37 over that of spring 32, so that any further increase of pressure in chamber 2 will, acting through means 44, move the lever means 34 clockwise of Fig. 1 to cause opening of port 7 by overcoming the opposin resistance of spring 37 to spring 32 and t us rmitting the spring 32 to move valve mem r 29 toward open position. Since the degree of opening movement of valve member 29 and the quantity of fluid bypassed depends upon the pressure within chamber 2 acting on means 44, it is evident that the pressure in the delivery line leading from port 6 cannot increase above a pressure equal to that for which valve member 13 is set to open plus the range between minimum and maximum delivery pressure or the differential pressure which will open port 7.

What I claim and desire to secure by Letters Patent of the United States is:

1. A device of the character described, comprising a hollow casing having an inlet port and a plurality of outlet ports, a valve member controlling each of said outlet ports, one of said valve members being operable up on predetermined fluid pressure in said casing, another of said valve members being operable upon a predetermined increase of fluid ressure in said casing, means normally tendmg to move said other valve member toward open position, means responsive to fluid pressure in said casing and operatively connected to said one member, means exerting a prede termined resistance to operation of said res onsive means, and means opposing said rst-named means and operable by said responsive means upon a predetermined increase of fluid pressure in said casing to permit said first-named means to actuate said other valve member.

2. A device of the character described, comprising'a hollow casing having an inlet port and a plurality of outlet ports, a valve member controlling each of said outlet ports, means responsive to fluid pressure in said casing and operatively connected to one of said valve members to move said one member to open position, means resisting operation of said responsive means and determining the fluid pressure at which said one valve member will be opened, resilient means operable to open another of said valve members, means resisting o ration of said resilient and norma y maintaining said other valve member closed, said last-named resisting means being operable by said responsive means upon a predetermined increase of fluid pressure to permit operation of said resilient of said valve members to cause opening movement thereof, means resisting opening movement of said one valve member by said responsive means, and means engageable by said one valve member upon predetermined opening movement thereof to cause opening movement of another of said valve members.

4. A device of the character described, comprising a hollow casing having an inlet port and a plurality of outlet ports, a valve member controlling each of said outlet ports, means movable in response to fluid pressure in said casing and operatively connected to one of said valve members to cause opening movement thereof, means resisting opening movement of said one valve member by said responsive means, resilient means normally tending to open another of said valve members, and means resisting operation of said resilient means and operable by said one valve member to permit said resilient means to open said other valve member.

5. A device of the character described, comprising a hollow casing having an inlet port and a plurality of outlet ports and having a depending hollow extension with an open end, a resilient expansible-collapsible member sealing said open end and extending into said extension, means resisting movement of said member in response to fluid pressure in said casing, a valve member controlling one of said outlet ports and operatively connected to said resilient member for movement thereby, a valve member controlling another of said outlet ports. means normally acting to move said other valve member to open position, means resisting said normally acting means and cooperable with said resilient member for movement thereby to permit operation of said normally acting means. I

6. A device of the character described. comprising a hollow casing having an inlet port and a plurality of outlet ports, a valve member controlling each of said outlet ports. means responsive to fluid pressure in said casing and operatively connected to one of said members, spring means normally tending to move the other of said members toward open position, means opposing opera tion of said spring means, means determining the fluid pressure in said casing which will actuate said responsive means, and means operable by said responsive means upon increased fluid pressure in said casing to overcome said opposing means.

7. A device of the character described, comprising a hollow casing having an inlet port and a plurality of outlet ports, a valve member controlling each of said outlet port s, means responsive to fluid pressure in said casing and operatively connected to one of said members, spring means normally tendmg to move the other of said members toward open position, means opposing operation of said spring means, means determmin the fluid pressure in said casing which wil actuate said responsive means, means operable by said responsive means upon 1ncreased fluid pressure in said casing to overcome said opposing means, and means determining the increased fluid pressure 1n said casing which acting on sa1d responsive means will operate said last-named means.

8. A device of the character described, comprising a hollow casing having an inlet port and a plurality of outlet ports, a valve member controlling each of said outlet ports, lever means in said casing engaging one of said valve members, means acting on said lever means and normally urging said one valve member to closed position, resilient means normally tending to open said one valve member, means exerting a predetermined resistance to opening movement of another of said valve members, means responsive to fluid pressure in said casing and operable to overcome said resisting means to cause opening movement of said other valve member, and means engageable with said lever means upon predetermined opening movement of said one valve member to overcome said second-named means and permit said resilient means to open said one valve member.

9. A device of the character described, comprising a hollow casing having an inlet port and a plurality of outlet ports, a valve member controlling each of said outlet ports, lever means in said casing engaging one of said valve members, means acting on said lever means and normally urging said one valve member to closed position, resilient means normally tending to open said one valve member, means operable in response to predetermined fluid pressure in said casing to cause opening movement of another of said valve members, and means operable on said lever means upon predetermined increase of pressure in said casing to permit said resilient means to open said one valve member.

10. A device of the character described, comprising a hollow casing having an inlet port and a plurality of outlet ports, a valve member controlling each of said outlet ports,

I lever means pivotally supported in said casaeeaeee ing and having one end cooperable with one of said members, means urging said lever member into engagement with sa1d one member, means tending to move said one member to open position, and abutment member carried by the other of said valve members and operable on predetermined opening movement thereof to actuate said lever means to permit said second-named means to open said other valve member, and means responsive to fluid pressure in said casing and operatively connected to said other valve member to open the same upon predetermined fluid pressure in said casing.

11. A device of the character described, comprising a hollow casing having aninlet port and a plurality of outlet ports, a valve member controlling each of said outlet ports, one of said members having abutment means, lever means coopcrable with and movable by said means and having engagement With another of said valve members, resilient means acting on said lever means and normally maintaining said other valve member in closed position, resilient means tending to open said other valve member, and means responsive to fluid pressure in said casing and operatively connected to said one valve member to move said one valve member to open position and said abutment means into engagement with said lever means to permit said resilient means to open said other valve member.

12. A device of the character described, comprising a hollow casing having an inlet port and a plurality of outlet ports, a valve member controlling each of said outlet ports, one of said members having abutment means, lever means cooperable with and movable by said means and having engagement with another of said valve members, resilient means acting on said lever means and normally maintaining said other valve member in closed position, resilient means tending to open said other valve member, means responsive to fluid pressure in said casing and operatively connected to said one valve mem ber to move said one valve member to open position and said abutment means into engagement with said lever means to permit said resilient means to open said other valve member, and means to adjust the relative positions of said abutment means and said lever means to regulate the opening of said other valve member.

13. A device of the character described, comprising a hollow casing having an inlet port, an outlet port in an end wall of said casing, an outlet port in a side wall of said casiu g, a lever member having a fulcrum support intermediate its ends, a valve member controlling said side outlet port and engaging one end of said member, spring means acting on the other end of said lever member and urging said valve member to closed position, spring means tending to open said valve member, said lever member having an arm, a valve member controlling said end outlet port and having means operable to engage said arm and move said lever member upon opening movement of said second-named valve member to permit said second-named spring means to open said second-named valve member, and means responsive to fluid pressure in said casing and operatively connected to said second-named valve member to open said end outlet port.

14. A device of the character described, comprising a hollow casing having an inlet port and an aperture through the wall thereof, a nipple member closing said aperture and extending into said casing and having a longitudinal bore therethrough, an annular valve seat in said bore, a reciprocable valve member cooperable with said seat and guided in said bore, means exerting a predetermined resistance to opening movement of said valve member and normally maintaining said valve member seated, pressure-responsive means operatively connected to said valve member and acting upon predetermined fluid pressure in sald casing to overcome said resisting means and move said valve member to open position, a b -pass outlet from said casing, a Valve mem er controlling said outlet spring means normally tending to open said second-named valve member, resilient means opposing said spring means and normally maintaining said second-named valve member closed, and means operable upon predetermined increase of fluid pressure in said casi to overcome said resilient means and permit said spring means to open said by-pass outlet valve.

In testimony whereof I have hereunto signed my name this 26th day of December,

PHILIP SHERMAN RUSSEL.