Matches 51 - 100 out of 228 < 1 2 3 4 5 >
Match Document Document Title
4555612 Plasma jet cleaning apparatus and method  
Voltage in a transfer arc power supply of a plasma jet cleaning apparatus employed to induce a cathode workpiece current for cleaning a surface of the workpiece includes apparatus for cyclically...
4549060 Mobile arrangement for laying a continuous pipeline  
A mobile arrangement for laying a continuous pipeline comprises a resistance welding apparatus, an outer flash trimmer, and at least one pipe-laying means. A jib of the pipe-laying means has a...
4540872 Apparatus for rotating a generally cylindrical heavy workpiece for treatment  
A large generally cylindrical workpiece is supported for rotation and driven by a set of axially spaced floor supported units each including a pair of parallel spaced cradle rolls. The cradle rolls...
4531039 Automatic valve seat build-up welding apparatus  
An automatic valve seat build-up welding apparatus for a Y-type main steam isolation globe valve used in an atomic power station is disclosed which is characterized in that the valve seat can be...
4527033 Steel pipe welding method  
An improved welding method for welding an inner seam of a longitudinally welded steel pipe along an inner groove by welding electrodes held by a boom which is supported by a tracing roller moving...
4525616 Internal pipe welding apparatus  
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...
4523076 Automatic welding machine which provides uniform welding of a workpiece during vertical movement thereof  
An automatic welding machine for arc-welding stator core laminations is disclosed. The machine carries singular or plural workpieces which are fixtured on a vertical slideway. A slide moves past...
4521669 Tube-welding auxiliary  
A welding device which provides a sort of a template function for guiding the electrode and tig torch of a gas tungsten arc welding procedure, the device providing a smooth and conical guide...
4513902 Apparatus for the automatic welding of complex shapes  
Apparatus for automatic welding of complex contours made up of rectilinear and curvilinear portions. Such apparatus includes first and second movable carriages guided for reciprocation in...
4507543 Pulse arc welding method  
In a pulse welding method, an optimum pulse current waveform defined by the amplitudes of the current pulse and base current and the width of the current pulse is maintained throughout the welding...
4504729 Three o'clock welding method in narrow groove  
A three o'clock welding method in a narrow groove, wherein a lateral butt welded joint is formed by carrying out welding in a narrow groove. The narrow groove is inclined with respect to the...
4500764 Device for internal welding of pipes or the like  
Apparatus for internal welding of pipes is provided with an external mechanism for rotating a pipe to be treated and a car insertable into the pipe and operable within the pipe. The car which...
4500765 Flux retainer  
A flux retainer retains a granular flux upon a rotating cylindrical pipe to which a metal reinforcement layer is applied by a submerged arc welder. The flux container comprises a rectangular frame...
4454405 Welding process and apparatus  
In a welding procedure for joining of adjacent, possibly partially enclosed metal components, such as pipe sections, wherein the welding procedure can be of a gas tungsten arc type such as a...
4443686 Device for arc-welding ferromagnetic workpieces under the control of a magnetic field  
Two coaxially aligned workpieces of ferromagnetic material, axially separated by a narrow peripheral gap across which a weld seam is to be formed with the aid of an arc moving along that gap, are...
4380697 Internal tube welding apparatus  
A hand-held welding torch is disclosed having a pair of foldable handles to ermit maneuvering of the torch in confined spaces. The torch is of the type having a non-consummable electrode radially...
4378483 Device for moving a welding torch during the welding of seams, especially of circumferential seams  
A device for moving a welding torch during the welding of seams, particularly circumferential seams, includes a chassis driven by a feed motor with a feed motor control unit and includes a...
4373125 Apparatus for welding pipes  
A welding apparatus for pipes which provides for a guide means which is to be fixedly secured to the pipe adjacent the welding area, a first carriage and a second carriage is movably supported upon...
4371771 Cutting torch and method  
A cutting torch and method for cutting or removing a material in which a high-velocity reactive gas stream is used to promote combustion of the material whereby a hollow elongated structure with an...
4356372 Sheiled-arc tube welder with intermediate gas supply  
Welding apparatus includes a welder and an electrically pre-heated wire that is fed into the perimeter of a weld puddle. The apparatus has equipment to produce relative motion between the welder...
4354087 Welding powder feed device  
A combination for feeding welding powder from a welding tractor for arc welding over a vertical to horizontal curved surface includes a pivotable powder vessel and a mechanism for maintaining the...
4352975 Pipe welding apparatus  
A mobile welding apparatus mounted on a manipulator, suitable for use in repair of pipe by welding. The apparatus includes a first clamping mechanism for clamping an already-laid pipe, a second...
4341938 Method and apparatus for seam-welding steel pipes  
A method of longitudinally seam-welding steel pipes comprises the steps of providing a conductive net-like enclosure tube around a cable for supplying a direct electric current from the power...
4335906 Weldable joint  
A fuel injection nozzle assembly includes a nozzle housing 11, an inlet connector 12 welded to the housing 11 at a weld joint 14, and a nozzle 15 welded to the housing 11 at a weld joint 16. The...
4323750 Device for feeding, with elongate lining material, an installation for lining a tubular member  
The invention relates to a device for feeding, with elongate lining material, an installation for lining a tubular member such as a pipe having a diameter of the order of 650 to 1,000 mm,...
4323752 Pipe resistance butt welding apparatus  
A pipe resistance butt welding apparatus disposable within the pipes to be welded comprises a fixed expanding clamp and a movable expanding clamp, provided with clamping elements and actuating...
4322596 Apparatus for producing large shafts by welding build up  
Apparatus for producing cylindrical bodies by building-up weld material thereon utilizing a submerged arc welding process includes a plurality of welding heads movable along the cylindrical body...
4319123 Method of controlling a magnetically guided welding arc  
A pair of workpieces are welded together by passing between them an arc which is guided by a magnetic field to rotate on the workpieces. Immediately after striking of the arc the field strength of...
4319113 Apparatus for welding tubes to a tubesheet utilizing a continuous weld  
A welding torch is rotatably mounted in a carriage. The carriage and welding torch are driven by motors and driveshafts mounted on a base to provide a light carriage which can be rapidly...
4308446 Method and apparatus for removing burrs from products fabricated from metal stock  
A method and an apparatus for clearing burrs from products fabricated from metal stock. The burr of a product is used as one electrode, and another electrode is formed by extending an electrode...
4278868 Methods and apparatus for heating metal parts with magnetically driven travelling electric arc  
Methods and apparatus for the welding and heat treating of metal parts in which an electric arc extends between a pair of adjacent metal parts or between an electrode and one or more metal parts...
4273985 Internal resistance pipe butt welder  
A welder arranged inside pipes to be welded comprises a housing with the longitudinal axis thereof matched with the axis of the pipes. On the housing are a welding transformer and two mechanisms...
4260870 Automatic welding apparatus for upward welding of curved joint  
Disclosed is an automatic welding apparatus for upward welding of curved joints having a plurality of welding nozzles mounted on an arm for independent or separate movement in directions tangent...
4245767 Apparatus for effecting multi-bead welding of two workpieces  
An apparatus for multi-bead welding of two rotating workpieces with a welding seam, which is deep relative to the maximum radius of the workpieces, includes a flat filler wire holder which can be...
4223824 Method of multi-bead welding of two workpieces and apparatus for carrying out the method  
An apparatus for multi-bead welding of two rotating workpieces comprises a flat filler wire holder which can be introduced into the gap between the workpieces and which is periodically pivoted...
4182950 Deep fill welding joint configuration and welding method  
A weld joint configuration facilitating the connection of two closely positioned workpieces having spaced apart end surfaces comprising sidewalls of a weld joint space. One of said workpieces has a...
4177371 Welding machine for welding pre-weld flanges and slip-on flanges onto pipes  
A welding machine for welding pre-weld flanges and slip-on flanges onto pipes which includes an upper welding station and a lower welding station for respectively welding a flange onto a pipe from...
4175224 Apparatus for transporting heavy equipment on a pipeline  
Apparatus is disclosed for transporting heavy equipment such as welding current generators, a prime mover therefor, and associated devices or supplies, on and along a pipeline, the pipeline serving...
4161640 Orbital welding torch  
The orbital welding torch described herein has a horse-shoe shaped body arranged to engage partially around the tubes to be butt welded when inserted from one side of the tubes, and a crescent...
4153831 Plasma arc welder for titanium blade spars  
A tube welding mill is shown through which titanium tube preforms are drawn and closed under a relatively stationary plasma arc welding torch. The tube preforms are drawn through a series of...
4145594 Method for longitudinally seam-welding pipe-bland for welded steel pipe from inside along groove  
In longitudinally seam-welding a pipe-blank for welded steel pipe from the inside along a groove by the metal arc welding process which comprises using direct electric current supplied to a...
4143801 Multiple welding head system for fabricating pipe  
A pipe is fabricated from rolls of flat metal plate by continuously moving the plate into a pipe-forming station which shapes the flat plate into a pipe having a longitudinal seam therealong. A...
4121746 Apparatus for forming a circumferential weld  
Apparatus for automatically forming a circumferential weld on a cylindrical member utilizing an A-frame structure which straddles the cylindrical member.
4063062 Electron beam welding technique for joining two workpieces together  
In the preparation of plane or curved workpieces for welding together by means of an electron beam and wherein the weld takes the form of a full penetration joint, fusion lips are provided at the...
4052039 Automatic cutting torch assembly  
The invention relates to an automatic cutting torch assembly for making cuts of any predetermined shape in a metallic pipe. Rollers are provided for the pipe to be processed which permit back and...
4016393 System for laying pipe  
System for laying pipe, wherein elongate flat sheets of metal are formed and welded to form pipe and wherein the pipe may be discharged for laying in a vertical direction or in a horizontal...
4003788 Nuclear fuel elements sealed by electric welding  
A nuclear-fuel assembly has an end plug and is sealed except for a small diameter axial bore in the plug. A welding electrode of the same material as the plug has an end ground to a point. The...
3937916 Rotating arc welding method and apparatus  
Apparatus for welding parts, such as pipes, end to end by means of an electric arc which is caused to rotate along the adjacent edges of the pipes. Two separate magnetic fields are used to cause...
3931489 Multiarc seam welding apparatus for thin metal sheet  
Apparatus for welding adjacent longitudinal edges of a thin flat workpiece being formed into a tubular configuration is disclosed as comprising a single welding head and an associated welding head...
3927295 Welding system  
A welding system for the welding of tube ends to tube sheets preferably having a thrust bearing and a welding head mounted on a spindle wherein the thrust bearing includes a plurality of axially...
Matches 51 - 100 out of 228 < 1 2 3 4 5 >