Abstract: Method and system for collecting fume and/or waste particulate matter generated in a process used to surface treat, cut, gouge or join a workpiece by means of elevated temperature (e.g. electric arc).The system includes means to collect and quench the effluent (slag and/or fume) in a cooled nozzle coupled with means to separate solid particles and cooling fluid, in the case of a working environment including air and return cleansed air to the ambient environment.

Abstract: A method and apparatus for collecting molten metal and/or slag together with fume generated by the air carbon-arc cutting and gouging process. The method and apparatus are characterized in that a refrigerated surface is used to intercept and cool the molten particles to prevent adherence of the particles to the collector or agglomeration of the particles inside the collector.

Abstract: An exothermic cutting electrode or burning bar having an oxidizable metal fluid conduit (tube) surrounded by a mass of metal similar to that of the fluid tube, the entire structure covered with an outer oxidizable metallic tube and/or an electrically insulating water impervious cover, either end of the electrode being adapted for connection to a source of oxidizing fluid and electric current, so that, an arc can be struck between a workpiece and the free end of the electrode to produce a cutting flame. By proper selection of the type and mass of the materials of construction the electrode will burn after the electric current has been turned off.

Abstract: Method and system for collecting fume and/or waste particulate matter generated in a process used to surface treat, cut, gouge or join a workpiece by means of elevated temperature (e.g. electric arc).The system includes means to collect and quench the effluent (slag and/or fume) in a cooled nozzle coupled with means to separate solid particles and cooling fluid, in the case of a working environment including air and return cleansed air to the ambient environment.

Abstract: Addition of between 2 and 20% by weight of noise suppressing constituents to a conventional d.c. air-carbon arc cutting and gouging electrode results in an electrode operating at noise levels between 5 and 15 dbA below that of a conventional d.c. electrode. Further noise reduction is achieved by lowering the operating pressure of the air in the torch.

Abstract: Method and system for collecting fume and/or waste particulate matter generated in a process used to surface treat, cut, gouge or join a workpiece by means of elevated temperature (e.g. electric arc). The system includes a nozzle for collecting the slag and fume. The nozzle is cooled by fluid. In addition there is a filter to separate particles and to return clean air to the ambient.

Abstract: An aluminum coated carbon-graphite electrode for use in the air-carbon arc cutting and gouging process. Uniformly coating the electrode with commercially pure aluminum results in a lower operating noise level when the electrode is in use, a cleaner and safer work environment for the user and better performance than conventional electrodes. A further feature of the invention resides in lowering the operating air pressure in the torch when using the new electrodes to further reduce the operating noise level.

Abstract: A welder's helmet having means to reduce the level of noise reaching a welder's ears when the helmet is positioned for welding. The helmet is characterized by the fact that the sound reducing means while fixed to the helmet does not contact or rest upon the head, ears or face of the welder thus not interfering with normal atmosphere circulation between the welder's head and helmet.