Abstract: Internal welding head apparatus, wherein a welding torch is mounted on a pivotal support for movement of the torch toward and away from the weld site, and wherein the torch is carried on a rotative shaft to be oscillated transversely by oscillation of the rotative shaft, oscillation of the rotative shaft being accomplished by rotation of an eccentric in a yoke fixed to the rotative shaft, and wherein the oscillations are dampened by spring means disposed at opposite sides of the rotative shaft. The apparatus is compact, and is adapted to be mounted on a carrier to be rotated about the interior of a pipe or tank, or the like.

Abstract: Welding head apparatus, wherein a welding head assembly is mounted on a support plate which can be adjustably moved both vertically and horizontally, and of which the welding tip may be angularly adjusted and may be oscillated transversely of the weld joint. The apparatus is compact and light in weight so that it may be mounted on a welding carriage, either singly or in plural units for forming multiple weld beads in a single pass. The apparatus is self contained, including a wire feeder, so that separate assemblies for supporting the welding apparatus are not needed.

Abstract: Track to provide travel of a welding carriage about a pipe, including a metal band bent to encircle a pipe and being supported by slotted crossbars, the slots of the crossbars providing resiliency to the band so that the band will yield when tightened about the pipe, and so that the pipe may expand and contract under changes in temperature without longitudinal overstressing of the band and the latch connecting the ends of the band. The invention includes locator apparatus for spacing the track from the end of a pipe, including one or more adjustable locking pliers fitted to provide pipe end and track engagements and suitable to serve as a guide for locating the position of the track with respect to the pipe end.

Abstract: Directional drilling apparatus for incorporation in a drill string, wherein a lower apparatus section is angularly deviated from vertical by cam action and wherein rotational displacement of the angularly deviated apparatus section is overcome by additional cam action, the apparatus being operated by successive increases and decreases of internal drill string pressure.

Abstract: A force transmitting toggle assembly having a plurality of toggle bars disposed between bar end engagement elements which provide a plurality of opposed bearing surfaces, the toggle bars being relatively movable in angular directions; the toggle bars having end engagement surfaces engageable with the opposed bearing surfaces, such that a force acting on one of the engagement elements is transmitted through the toggle bars to the other engagement elements.

Abstract: Earth station antenna and method for assembly wherein the antenna has a frame made up of accurately stamped radial ribs and circularly disposed cross members, the frame being filled in by either sheet metal segments or by screen mesh segments to form a parabolic surface. The ribs are supported by a central ring or barrel, which is rotatable during assembly, and by back braces which are adjustable to bring the ribs to true parabolic positions and to tune the completed antenna. Assembly may be done from the ground by rotation of the central barrel. Novel connection means and a positioning gage are used during assembly of the antenna.

Abstract: Internal pipe welding apparatus, including a pair of internal pipe clamps between which is disposed a rotative welding head support. The welding wire and gas feed conduits are disposed through passages through the central hub of one of the clamps. The welding head support is rotated by a ring gear engaged by a gear carried by a shaft disposed through a passage of the central hub of the other clamp. The gear engagement with the ring gear is adjustable to minimize vibration and chatter. The welding wire feeders are mounted on a block support at the front of the first mentioned central hub.

Abstract: Surface controlled blade stabilizer apparatus, for which surface control is achieved by alteration of internal drill string pressure to move a piston which carries an actuator for expanding the stabilizer blades, the blades being spring biased inwardly when not forced outwardly by the actuator. A barrel cam controls and guides the actuator to downward, upward and intermediate positions, so that the blades may be expanded, retracted, or held expanded when drill string pressure is reduced. The apparatus has a full open passage therethrough which is not interfered with by operation of the apparatus.

Abstract: Drum stick having serially disposed length portions of reducing diameter from the butt end to the tip end of the drum stick, the handle end of the drum stick having surface interruptions to facilitate handling of the drum stick without slippage.

Abstract: Ripper apparatus having interchangeable tool bar means whereby a tool bar having a single ripper blade may be used with the apparatus or a tool bar having plural ripper blades may be used with the apparatus, whereby the tool bar supporting elements may be used for the apparatus in either form.

Abstract: Clamp-on drill collar stabilizers, wherein a stabilizer body in sleeve form is adapted to receive a drill collar therethrough. The stabilizer sleeve is connected to the drill collar by releasable connection means, and positive release means for releasing the connection is provided. Six embodiments of apparatus are provided, with diverse forms of connection means and release means, each adapted for quick connection and quick release, so that the stabilizer sleeve may readily be removed or moved to another location along the drill collar.

Abstract: Accumulator recharging valve wherein a valve is opened to drain the accumulator, and then the accumulator is recharged through another valve, the valves being operated by pipe string pressure after blanking off the flow passage therethrough by a wireline tool, the valve operations being controlled by a barrel cam whereby the drain valve and recharging valve are alternately opened by pressure cycles in the pipe string.

Abstract: Drill string stabilizer apparatus, controllable to expand and retract entirely from the surface by control of drill string pressure, wherein increase of drill string pressure from the surface closes a valve to create a piston means which is moved down by drill string pressure to expand the stabilizer blades, said valve being opened and the piston moving upward upon reduction of drill string pressure to retract the stabilizer blades. Upward and downward movements of the piston and an actuator sleeve therebelow are controlled by a barrel cam acting between the housing and the actuator sleeve.

Abstract: Gate valve having a secondary seal, wherein the gate forms a metal to metal seal with the seat and wherein a resilient seal is moved toward the gate when the gate is in closed position to form a secondary fluid-tight seal with the gate, whereby leakage past the gate is effectively prevented.

Abstract: Well apparatus, in which a pressured fluid accumulator is used to perform a function when the apparatus is disposed downhole in a well, such as to operate a valve to control fluid flow through a tubing string in which the apparatus is disposed. The accumulator is pressure-charged after the apparatus is run into the well by exposing the accumulator to casing pressure, so that the accumulator will thereafter be at a constant pressure. Performance of functions is accomplished by varying the casing pressure to above or below accumulator pressure, and using the pressure differential between the casing and accumulator to operate an actuator, such as a piston, to perform the function. The accumulator pressure may be made as desired by adjustment of the casing pressure at the time the accumulator is charged with pressure after the apparatus has been run into the well.

Abstract: Apparatus for use in fractionation, stripping, absorption, and the like, wherein a column or tower has plural vertically spaced trays each consisting of two vertically spaced rows of strips which are parallel and of which the strips of the lower row are centered below the spaces of the upper row, and has a separator above each said tray consisting of plural vertically spaced rows of upwardly facing channels which are parallel and of which the channels of one row are centered between the channels of the adjacent row or rows, the trays and separators occupying a major portion of the cross sectional area of the tower and the remainder of the cross sectional area of the tower being occupied by downcomers, whereby the tower has a major portion of its cross sectional area used for upflow of vapor and liquid, or vapor. The towers or columns according to the invention result in reduced size and cost as compared with conventional apparatuses, and result in improved efficiencies and performance.

Abstract: Sandblasting apparatus and valve apparatus therefor, and methods for performing sandblasting operations, wherein an abrasive-filled pressure vessel is pressured by sandblast air when an air control valve is opened, and wherein automatic blowdown of the pressure within the pressure vessel is required when the air control valve is closed, a dual valve structure being provided in which the air control valve and blowdown control valve are combined and in which the two valves operate in tandem, one valve being open when the other is closed.

Abstract: Toy, called "The Giant Armadillo Radar", having a molded body in the form of an armadillo, and having a rotatable antenna and flashing lights at the upper side of the body, and having a buzzer which sounds when the lights are flashing. The toy is adapted to suggest a radar-equipped armadillo to children, and to serve as a conversation piece to adults in connection with the current advertising program of a well known brewery company in which a giant armadillo is portrayed as having stolen and consumed great quantities of beer.

Abstract: Lighting apparatus having less than the conventional number of light sources, but which provides illumination substantially equivalent to the illumination provided by the conventional apparatus, thereby providing savings in energy consumption and in cost of operation. Part of the light output of the light sources which are provided is reflected to illuminate areas of the diffuser plate which are illuminated by additional light sources in conventional apparatus, whereby it appears that a full number of light sources are provided when in fact less than a full number of light sources are provided.

Abstract: Game methods and apparatus, the apparatus comprising a single-level or multi-level game board, and a suitable number of distinguishable markers for plural players. Each player commences play with a predetermined number of markers, arranged on the single or multiple game board levels. The players play repeatedly in predetermined order, each player moving a single marker to any unoccupied space on the game board apparatus, each board having plural aligned spaces not less than three in number in each of perpendicular directions. A board level is eliminated as to any player when that player has no more than three markers remaining on that board level, and a board level is eliminated as to all players when only one player has more than three markers remaining on that level. The last player having more than three markers remaining on the last active board level is the winner of the game. Captures of another player's markers is accomplished by surrounding of the captured marker in any of specified manners.