Abstract: A butterfly valve characterized by the addition of fluid purge supply means to prevent leakage.

Abstract: A fluid flow control and mounting thereof retains a flexible tube in a constant position relative to a stationary structural member and selectively constricts the tube to control the flow of a working fluid transmitted therethrough. The flow control includes an anvil engaged by the tube and a mounting connected to the anvil for detachably connecting the same to a structural member. The anvil has a transversely curved surface with a transverse concave groove therein for receiving and securely yet detachably positioning and retaining the tube therein. Flow control members are movably mounted on a rod extending from the anvil surface and include a slidably mounted clamping disc engageable with a tube positioned in the groove and an adjustment knob movably mounted on the rod. The clamping disc has a roughened surface for frictionally engaging the tube and an opposite smooth bearing surface for engagement with the adjustment knob.

Abstract: This application discloses a tube-type throttling valve assembly and the particular construction of the valve, along with the control passages and associated pilot controls.

Abstract: A matric potential sensor comprises(a) a housing including a porous wall adapted to be located underground,(b) spaced electrodes carried in the housing to be coupled to a source of electrical current, and(c) granular material located to pass electrical current within the housing and between the electrodes so that the current flow will vary as a function of the moisture content of the granular material, said content adapted to vary as a function of the matric potential of the soil surrounding the housing in response to moisture transmission through the porous housing into the surrounding soil.Special circuitry adapts the sensor for use with a solenoid type irrigation valve controller.

Abstract: The device comprises an annular case having a first portion which projects from the wall and a second portion which is embedded in the wall. A tubular element connected to two pipes of the piping defines a passage through the case. The tubular element has a first section and a second section respectively located in the first portion and second portion of the case. The tubular element is of a material which is rigid at ordinary temperature and softens under the action of heat. At least the first section is of a fusible material having a distinct point of fusion. The first portion of the case is provided with means for instantaneously closing the passage as soon as the first section has disappeared. The second portion of the case is filled with a material which swells radially under the action of heat.

Abstract: A control circuit is disclosed for a sleeve-type pinch valve and which control circuit utilizes an internal vacuum condition in a main supply line in which the valve is disposed to retain the elastomeric sleeve of the valve open. A check valve is provided in the control circuit to prevent backflow of material from the main supply line into the control circuit and pinch valve. A unique check valve disclosed for this purpose includes an expandable tubular diaphragm of elastomeric material normally closed at one end and which opens cylindrically so as to impose no restriction to one-way flow of material therethrough. The one end collapses when flow is interrupted, thus to prevent backflow through the valve.

Abstract: An apparatus for the treatment of material in the form of webs, usually textile webs, with a heated treating fluid, e.g. hot air for the drying of the material, comprises a drum having a perforated periphery adapted to receive the web from a so-called float-dryer disposed above the drum. The treating fluid is forced through the perforations of the drum and contacts the web lying therealong. The float-dryer has a surface inclined downwardly toward the surface of the drum in a direction opposite the direction of rotation thereof and in a direction opposite the direction of rotation thereof and is provided with means forming a fluid cushion between the web and the float-dryer surface. The arrangement prevents the application of tensile stress to any significant extent to the web during the predrying and subsequent treatment thereof on the surface of the drum at the transition region between the predryer and the drum surface or elsewhere along the treating path.

Abstract: This invention relates to the replacement of seals in ram type blow out preventers and is especially useful for replacing such seals where the well head is at a considerable distance from the drill head, for example on the sea bed. The method comprises removing a seal from a first blow out preventer ram in situ at the lower end of the well riser, and inserting a replacement shoe of smaller internal diameter itself fitted with a seal within the seal recess of the first ram.There is disclosed a shoe for a ram type blow out preventer comprising a part annular member having a part cylindrical outer surface provided with a ridge for receipt in a recess in a blow out preventer ram, means for indexing and securing the part annular member relative to the blow out preventer ram, and a seal receiving recess in the radially inner surface of the part annular member.

Abstract: An open ended sleeve for a pinch valve is disclosed. The sleeve has a resilient tubular body member with an elastomeric liner forming a smooth tubular inner wall. A number of circumferential fabric layers surround the liner and are bonded thereto extending along the full length of the body member, a gum layer surrounds the fabric layer and a mounting flange is provided at each end of the body member, each mounting flange has a rigid annular ring therein having a cross section with rounded corners, the ring having an end face perpendicular to the longitudinal axis of the body and a sloped outer face tapered inward from the end of the sleeve. Fabric layers extend around and are bonded to only the outer face and end face of the ring, thus separation between the fabric layers and the ring does not occur when the sleeve collapses.

Abstract: A safety valve for use in fuel dispensing systems including a vapor recovery system and having a valve body, first and second inlets in the body, first and second outlets in the body, first and second, separate, fluid flow passages in the body and extending between respective ones of the first and second inlets and outlets, two valve seats in the body, one in each of the passages, a shaft extending through and rotatable in the body adjacent the valve seats, first and second clapper valves in the body, one in each passage, each clapper valve having a limited lost motion connection to the shaft to be rotatable therewith, with limited lost motion, between positions seated against and spaced from the associated valve seat, a pair of springs, one for each valve, biasing the associated valve towards its associated seat, and a holding device for holding the shaft in a position of rotation within the body wherein the valves are spaced from their associated seats, and for sensing an unsafe condition in the vicinity of

Abstract: A mechanical actuating device for hydraulic control valves having complex control functions, which can be assembled from individual units in a modular system, each of which has valve bodies which can be operated by longitudinal displacement in a housing that can be joined to the housing of the adjacent module. The actuating device for each module has a cam control member rotatably mounted in a cam housing which can be placed on the module housing and which can be brought into engagement with the ends of the valve bodies protruding from the module housing. The cam control members of all individual modules are disposed with aligned axes of rotation, and a coupling is provided for the co-rotational joining together of the cam control members of adjacent modules in selectable relative angular positions to one another.

Abstract: To reduce the time and inconvenience usually involved in the process of igniting charcoal briquettes, an upstanding stiff wire basket having a heat shielded lifting handle is utilized in conjunction with a comparatively fine mesh basket liner which retains finer charcoal particles. Following ignition of the briquettes, they can be delivered from the basket to any barbecue grill or other use point. The necessity for piling the briquettes by hand is eliminated.

Abstract: An improved combination glass door closure and ducted (e.g., tubular) heat exchanging grate for fireplaces. The combination grate includes a ducted heat exchanger suitable for positioning within a fireplace cavity. The heat exchanger comprises a plurality of hollow, generally parallel, C-shaped heat exchanger members which are carried by a glass door fireplace closure. One end of each of the heat exchanger members is attached to the fireplace closure by means of a sliding or floating seal and means are provided for preferentially directing the flow of air to the centermost heat exchanger members.

Abstract: A fire hydrant having an improved means of attaching the lower stand pipe portion to the hydrant valve body. The lower stand pipe is sealed to the valve body by means of a well-known push-on joining method and is prevented from separating therefrom by use of novel keying means. The keys can be removed should it become necessary to separate the lower stand pipe from the hydrant valve body.

Abstract: A valve having a closure element in the form of a tapered plug normally maintained by gravity on a vertical rod extending loosely into a bore in the plug. Flow of fluid through the valve in excess of a predetermined rate acts on a flow-responsive surface of the plug to move the latter into engagement with a valve seat, thus blocking further flow. The construction is particularly suited to close control of the flow rate at which closure of the valve occurs. The size, shape, weight and position of various elements influences the magnitude of the flow rate required for closure and may be tailored to effect closure repeatedly at a virtually exact desired flow rate. One embodiment includes means for selectively changing the shape of the flow-responsive surface, and thereby the flow rate at which closure occurs.

Abstract: A wet barrel hydrant check valve has a body containing a dash-pot assembly connected to a flapper valve, spring biased towards the closed condition. A sandwich flange fixed to the hydrant has a member holding the flapper out of the flow passageway, the flange being joined in a break-away connection to the valve body so that upon hydrant upset, as by vehicle impact, the hydrant and holding member are dismounted from the valve body, releasing the flapper into the flow path of escaping water for dash-pot controlled, gradual closure of the valve minimizing water hammer in the line.

Abstract: A frangible member isolates a rupture disc from a pressurized fluid system. Under abnormal conditions such as might be encountered in a crash or derailment, the frangible member breaks and thereby permits direct contact of the rupture disc with the fluid system. If the pressure is sufficient, this causes the rupturing of the disc and the venting of the fluid system down to atmospheric pressure.

Abstract: The infra-red heated spray paint booth has positioned in the roof thereof an infra-red heater which extends the length of the booth. The heater includes a black radiant pipe to which is supplied high temperature combustion gases at one end thereof while the other end has a vacuum pump to draw the combustion gases through the pipe. The pipe is comprised of three spaced sections, each of which is mounted adjacent the reflective surfaces of a reflector unit mounted on the roof of the booth. The reflector units cooperate with glass infra-red energy transmitting members to provide enclosed zones, with the black radiant pipe section positioned between each glass member and a reflector unit. The black radiant pipe emits infra-red rays which are focused in part by the reflector and pass through the glass infra-red energy transmitting member to impinge upon a freshly painted workpiece, for example, an automobile, in the paint booth below.

Abstract: The specification discloses a valve including a valve body with a longitudinal central passage therethrough. A truncated ellipsoid valve member is located within the central passage of the valve body. The ellipsoid member has major and minor axes and has an aperture extending along the major axis thereof. Annular resilient seats are disposed in contact with opposite end portions of the ellipsoid member. A handle is provided to rotate the ellipsoid member between open and closed positions. In the open position, the aperture through the ellipsoid member is aligned with the central passage of the valve body and the ellipsoid member causes deformation of the resilient seats to prevent leakage of fluid around the exterior of the ellipsoid member.

Abstract: An apparatus, for adjusting the timing of a fuel injection pump for an internal combustion engine, advances the timing in response to supplied pressure which is proportional to the speed of the engine, and also advances the injection timing when the engine is cold.