Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 6884959 | Controlled composition welding method This invention relates to a method and apparatus for controlling the composition of a weld. More particularly it relates to welding using an electric circuit, thereby creating a weld puddle, and adding at least one filler that is electrically independent from the el... | 04/26/2005 |
| 6331688 | Use of a metal powder for surface coating by submerged arc welding The present invention concerns the use of a pre-alloyed atomised powder in combination with at least one melting electrode wire in the SAW method. The electrode wire is an unalloyed or low-alloy metal wire and the metal powder is a metal powder containing... | 12/18/2001 |
| 5690844 | Powder feed for underwater welding An apparatus and method feeds weld material to an underwater plasma transferred arc welding torch. The weld material comprises a powder, which can be entrained in a fluidizing gas flow. The weld material is fed by the apparatus from a first supply through... | 11/25/1997 |
| 4833296 | Consumable welding electrode and method of using same An improved consumable electric arc welding electrode having an outer ferrous metal sheath, such as a low carbon steel sheath, which is formed around a generally concentric core of compressed particulate fill material to be used for depositing an all weld... | 05/23/1989 |
| 4805826 | Slag removing apparatus for pad-welding machine Described herein is a slag removing apparatus suitable for use on a padi-welding machine, which permits automation of the pad-welding operation and which essentially includes: a C-shaped roller holder located beneath a movable welding torch and provided w... | 02/21/1989 |
| 4613741 | Feeder for welds A feeder for feeding alloy materials and electrode wire to a weld zone for deposition in desired amounts including a plurality of independent feeding elements, each feeding element controlled by its own independent control, the feeding elements powered by... | 09/23/1986 |
| 4570047 | Submerged automatic arc welder A welding machine includes a main housing with head stock and tail stock sections at its opposite ends having respective chucks for supporting a rotating work piece. A carriage movable endwise between the head stock and tail stock sections includes a head... | 02/11/1986 |
| 4539460 | Method of hardfacing vertical walls A method of hardfacing vertical walls comprises building up a layer of superimposed partly overlapping horizontally extending weld beads by depositing the beads in a submerged arc welding operation using relatively thin welding wires and welding powder wh... | 09/03/1985 |
| 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 having a pair of end plates and a pair of side plates. Whe... | 02/19/1985 |
| 4432313 | Aluminum base material with hard facing deposit An aluminum base material with a hard facing deposit which shows extremely good hot hardness properties when subjected to high operating temperatures. The invention provides a hard facing deposit which shows a hot hardness of at least 100 BHN at 600° F.,... | 02/21/1984 |
| 4430545 | Method for submerged-arc welding a very low carbon steel A method for producing line pipe of high strength and high toughness by the submerged-arc welding process in which a welding wire containing 0.18-0.55% C. is used, Ti or B or both are added to the welding wire or flux or both, and a steel containing 0.005... | 02/07/1984 |
| 4404450 | Roll welding machine and method of reconditioning caster rolls A roll welding machine has the frame mounting head and tail stocks for axially supporting a castor roll having a crack therein. The heat source is mounted upon the frame below and along the length of the roll for maintaining said roll at a minimum tempera... | 09/13/1983 |
| 4363951 | Both-side single layer, high speed submerged arc welding process A process for both-side single layer, high speed submerged arc welding of steel plate for use in low-temperature applications having a particular chemical composition with a welding flux and welding wire is disclosed. The welding flux comprises 20 to 30 w... | 12/14/1982 |
| 4348574 | Flux dam for submerged arc welding A dam, or barrier, structure is moved along the edge, or corner, of a workpiece to control the flow limits of molten material of arc welding. The dam structure provides a dimentionally stable groove at the edge of the workpiece surface into which is recei... | 09/07/1982 |
| 4342897 | Recovery type flux feeding assembly A recovery type flux feeding assembly is disclosed. The assembly includes a virgin flux hopper and a waste flux hopper with a flux feed conduit connected to the bottom of the waste flux hopper. The hoppers are separated by a drop stop which selectively pe... | 08/03/1982 |
| 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, particularly in the nuclear industry. The pipe is placed with its a... | 04/06/1982 |
| 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 parallel to the axis thereof, and devices for supplying weld... | 03/30/1982 |
| 4266110 | Clad welding on an inclined surface Submerged arc strip cladding of the workpiece is carried out on a workpiece which has a surface inclined to the horizontal transverse to the direction of the welding progress. The flux burden is skewed in a zone overlaying the molten metal area with a hea... | 05/05/1981 |
| 4256949 | Method and wire for submerged arc welding of pipe A combination of welding wire and welding flux for submerged arc welding of high strength low alloy pipe which require low temperature impact properties of at least 30 ft./lb. at -13° F. The wire consists essentially of 2.0 to 3.5 wt. % manganese; 0.01 w... | 03/17/1981 |
| 4228339 | Method of hardfacing tool joints An improved method for hardfacing tool joints for earth boring drill pipe. Annular bands of hardfacing are applied by an apparatus that creates an arc between a consumable steel wire and the tool joint. The steel wire is reciprocated across the width of t... | 10/14/1980 |
| 4213025 | Apparatus for connecting metallic parts by means of arc fusion welding An apparatus for connecting metallic parts, and metallic parts so produced, by means of arc fusion welding by producing a low volume welding seam (narrow gap welding), wherein the workpiece parts to be joined and forming a narrow gap are initially welded ... | 07/15/1980 |
| 4208563 | Welding method using a break away flux dam The invention relates to an improvement in a method of welding a first workpiece to a second workpiece which comprises utilizing the flux dam composition on each side of a weld groove to define a dam and electrical welding along the weld groove while addi... | 06/17/1980 |
| 4005306 | Flux breaker for submerged arc strip cladding of metallic work pieces The invention relates to an improvement in apparatus for carrying out the submerged arc surfacing of metallic work pieces with metal electrode strips melting in an electric arc while forming welding beads upon the work piece. A slag breaker comprising a s... | 01/25/1977 |
| 4000010 | Roll and process for producing same A roll and process for producing same are disclosed. This process includes the steps of: horizontally placing a core body made of a cast steel or a steel based Adamite containing from 0.5 to 2.5 %C, said core body having one or more circumferential groove... | 12/28/1976 |
| 3975610 | Welding Methods of hard facing iron or steel articles by a submerged arc welding process are described. Specifically, an iron or steel rolling mill roll arbor is hard faced by rotating the arbor about its longitudinal axis and traversing a welding head parallel t... | 08/17/1976 |
| 3936655 | Magnetic feeding of powder in submerged arc welding Bulkwelding is disclosed in which a consummable electrically conductive electrode is fed to a weld zone, and electric current is caused to flow in the electrode thereby providing a magnetic field about the electrode, particles of magnetically responsive w... | 02/03/1976 |
| 3936654 | Process and apparatus for the performance of arc welding and overlaying, preferably submerged arc Arc welding and overlaying, particularly with strip electrodes, and particularly for overlaying by the submerged arc welding process with strip electrodes, can be regulated as to the distribution of arc energy by using strip electrodes which are run throu... | 02/03/1976 |
