Abstract: Apparatus to apply dyestuff to a moving sheet of fabric which employs a unique construction of dye applicator or gun constructed basically in two clam shell sections with the clam shell sections being made in sets for ease of adjustment and installation. The dye applicator or gun includes a multiplicity of dye jets made by grooving each of the clam shell sections, mating the sections and then drilling the grooves to the proper size.

Abstract: Two methods are disclosed for forming two different bubble cap assemblies for mounting over holes in tray decks of a gas and liquid contact apparatus, as a fractionation tower.

Abstract: A mass of alloy material is deposited on a valve seat and is heated to alloying temperature by a laser beam which sweeps around the valve seat thereby alloying the valve seat. While the alloyed material is still at a high temperature, the forming tool is pressed against the valve seat to shape the valve seat to a configuration which requires little or no grinding.

Abstract: Apparatus and method for making propellers having a base plate with an upstanding central shaft for receiving a blank propeller hub. A plurality of blocks are radially arranged on the plate about the central shaft, and each block has an upwardly projecting pin near one end thereof. The blocks each have vertical set screws therethrough opposite their pins to allow swingable movement to adjust the pin radial distances from the central shaft. The heads of said set screws are positioned on the top of said blocks, and provide positioning means for locating a cylindrical collar on said blocks. The collar has a plurality of radially arranged and adjustable arms, one for each block, extending inwardly therefrom, with each of said arms having a collet thereon with an inwardly presented slotted face.A propeller is made by positioning a plurality of propeller blade blanks each with its root in contact with the blank hub and its tip resting upon one of said blocks in contact with the pin thereon.

Abstract: An X-ray apparatus including a telescopic column support comprising concentrically positioned tubular sections nested one within another. Each of the sections except the innermost section has three guide bars triangularly spaced on the inner surface. Each section except the outermost section has rollers on the outer surface cooperating with the adjacent guide bars of the surrounding section. The guide bars cooperate with the rollers in a generally circumferential direction rather than radially of the tubular members. Mounting plugs held in apertures of the telescopic sections by an interference fit locate the guide bars and rollers and provide mounting surfaces therefor. The plugs are initially insertable into the apertures with a clearance fit, when an appropriate temperature differential is established between the plugs and sections.

Abstract: A rotary ball valve includes a seat support integral with the valve body, a rotatable ball, a movable seat support, a retaining ring, and, on opposite sides of the ball, thin annular seating rings made from a material, such as tetrafluoroethylene. When the valve is assembled, the seating rings are deformed to engage the ball and supports and undergo a small amount of cold-flow outwardly toward interior passage walls of the valve body so that the outer periphery of the seat rings engages and forms a seal between the ball member and the interior passage wall. The seat-engaging surfaces of the seat supports each have grooves into which the seating rings cold-flow during valve assembly. Ribs are thus formed on the seating rings which keep the seats from rocking. The valve also provides an improved stem seal, including a Belleville washer confining a tetrafluoroethylene washer. In addition, the valve includes a handle having a novel projection for limiting movement of the ball to 90.degree.

Abstract: In an extrusion process comprising the steps of fabricating a metal billet, heating said billet for a predetermined time and at a selected temperature to increase its plasticity and then forcing said heated billet through a small orifice to produce a desired extruded object, the improvement comprising the steps of randomly inserting a plurality of small metallic thermal tabs at different cross sectional depths in said billet as a part of said fabricating step, and examining said extruded object at each thermal tab location for determining the crystal structure at each extruded thermal tab thus revealing the maximum temperature reached during extrusion in each respective tab location section of the extruded object, whereby the thermal profile of said extruded object during extrusion may be determined.

Abstract: A valve construction having a housing provided with an inlet and an outlet interconnected together by a valve seat of the housing carries a movable valve member for opening and closing the valve seat, the valve member having an elongated valve stem extending from one side thereof. The housing has axially spaced guides to provide the sole means for guiding axial movement of the valve stem, the valve stem having a guide collar thereon disposed closely adjacent the valve member and cooperating with one of the guides of the housing. Such guide collar is also utilized as a stop means for limiting axial movement of the valve member in one direction of movement thereof.

Abstract: A valve bonnet structure has an inner ring spaced slightly from the inner surface of the bonnet structure and secured along its lower edge portion to the bonnet. An angle-shaped member having a downturned leg lapping the ring is secured to the inner surface of the bonnet structure above the ring. For repair of the valve, an upper valve bonnet portion having the angle-shaped member thereon is removed by a cutting tool with the ring remaining in place on the lower valve bonnet portion. After repair of the valve, the upper and lower valve bonnet portions are welded together adjacent the ring with the downturned leg thereon fitting over the ring, and a seal between the leg and ring prevents fluid within the valve structure from being exposed to the welding operation.

Abstract: A process and apparatus are provided for assembling a heat exchanger comprising a stack of metallic elements, more particularly a heat exchanger of the cross-flow type.

Abstract: For a foundry ladle provided with a sliding gate valve to be removed from the ladle as a unit to permit replacement of worn-out refractory material, there is provided a process and apparatus for assembly of the sliding gate valve unit in upright position, while the parts of the sliding gate valve unit are subjected to heating.

Abstract: A rotor for a gas turbine engine has a wrought superalloy disk with ceramic blades. The rotor is formed by placing ceramic blades in a fixture with their ceramic blade roots extending inwardly and between the upper and lower rims of a disk or disk halves. The facing upper and lower circumferential rims are cut away to provide for the ceramic blade roots. Said disk or disk halves being of a wrought superalloy having a fine grain size microstructure which can be placed in a superplastic condition. A compliant layer material is placed between the ceramic blade roots and the rims of the disk, and the disk and compliant layer are then heated so as to place the disk in a superplastic condition and pressed into intimate contact with the ceramic blade root, and if disk halves are being used, they are bonded together at inner mating surfaces. The rotor is then heat treated to return the disk to its normal condition of high strength and hardness.

Abstract: A system for forming flat base truck rims from flat strips of steel rolled into the form of smooth cylinders and welded together along the abutting axial edges. The system is capable of forming rims from hot rolled, rimmed, low carbon steel strips. The smooth cylinder is initially formed by a plurality of dies located at opposite ends of the cylinder and mounted for advancing movement relatively toward each other in the direction of the cylinder axis to flare a first end of the cylinder radially outwardly while rough forming a rim gutter on the other end of the cylinder. The radial thickness of the metal forming the rim gutter is increased during the rough forming thereof by applying a compressive axial load to the cylinder and providing a gutter-forming die cavity wider than the starting thickness of the cylinder. The rim gutter is warm or hot formed by heating that end of the cylinder before advancing the dies to roughly form the gutter.

Abstract: Method for mounting a cylindrical bearing having a closed end wall around a trunnion of a cross member of a universal joint by fitting the bearing in a bore of the corresponding yoke under such conditions that the end wall of the bearing affords an elastically yieldable support, optionally through intermediate means, for the end face of the trunnion. The method comprises giving to the end face of the trunnion and to the parts conjugate therewith, namely the end wall of the bearing and/or the intermediate means, such an arrangement that, in a first stage of said fitting, when the parts conjugate with the end face merely come in contact with the latter and possibly in mutual contact, a first axial distance between the open end of the bearing and the end face is distinctly less than a second axial distance which must be finally obtained between the open end of the bearing and the end face.

Abstract: A rotor for an axial flow, elastic fluid turbine apparatus. The rotor has a rotating shaft having a plurality of circumferentially spaced rotating blades thereon. Each blade has a platform portion having a convex arcuate surface and a concave arcuate surface. The convex arcuate surface has a radius greater than the radius of the concave arcuate surface so that individual rotating blades can be removed without removing the casing.

Abstract: A method and apparatus for aligning the head of an engine valve in relation to the valve stem. A pair of die members is provided, the first die member being fixed relative to the frame of the apparatus and the second die member being cylindrical and rotatably mounted relative to the first die member. Each of the die members includes a surface for engaging the stem of the valve to straighten the valve stem as it is rolled between the surfaces in a generally arcuate path. A head straightening assembly is disposed adjacent the die members, including a straightening wheel freely rotatable relative to the die members. The straightening wheel includes a straightening surface which rollingly engages the surface of the valve head as the valve stem is rolled between the die surfaces in the arcuate path.

Abstract: A method for repairing turbine vanes and the like which have become worn or cracked after extended periods of use. The method embraces the steps of applying molten metal containing a predetermined quantity of silicon to the cracks, and overall to the worn or eroded areas of the vane to build up the same beyond its original surface, sintering the vane in a furnace at a temperature of over 2,000.degree. F thereby burning off some of the silicon, allowing the vane to cool, and thereafter placing it in a high pressure furnace and subjecting it simultaneously to heating to a temperature in excess of 2,000.degree. F and a pressure in excess of 15,000 PSI to drive the build-up material into all of the cracks of the vane and simultaneously effect a densification of the material as well as improving the bond to the original eroded surfaces.

Abstract: A housing for circular piston combustion engines of trochoid type is produced with at least one annular shell having an inner peripheral wall in the shape of a multi-arcuate trochoid, an outer peripheral wall, and end walls parallel to each other and adjoined to the ends of the shell, end pieces parallel to each other having end walls parallel to each other and an inner and an outer peripheral wall. In the case of a multiple engine at least one end piece constitutes a middle piece between neighboring shells.

Abstract: A method and apparatus for assembling an aerosol valve which are intended to assemble a valve made up of a valve body, a spring, a stem, a sealing disk and valve cap. In assembling the valve, two vertically disposed sets formed in sequence are indicated by a first "sealing disk-valve cap" set and a second "valve body-spring-stem" set. The sets are disposed one above the other so that their original orientation is retained, and are brought together so as to place the components into a specified position relative to each other in the valve, then the sets are interlocked by deforming the valve cap. In the apparatus employing the method, namely in a mechanism for bringing the sets together, a tip adapted to grip, transfer and dispose the first set above the second one is provided. By virtue of such an arrangement, the assembling of valves involves a minimum of operations and a high-capacity apparatus has been developed.

Abstract: A method for forming a high frequency antenna such as a horn-reflector antenna. In fabricating the horn antenna a mold may be used which comprises a paraboloid-cylindrical section and a pair of half cone shells for forming respectively the paraboloid-cylindrical portion and the cone portion of the antenna. In assembling the mold, the shells are secured together and then the cylindrical section is fastened to the assembled shells. After the antenna has been formed, the mold is disassembled by first removing the paraboloid-cylindrical section, thereafter removing one of the shells and then the remaining shell; and all such mold parts being removed via the radiating aperture of the paraboloid-cylindrical portion of the antenna.