Abstract: The present invention is directed to a method for providing substantially particulate free gases by dispensing a highly pressurized gas from a carbon steel cylinder. The carbon steel cylinder is made by a process comprising the steps of forming an open ended cylinder from a billet, blank or tube of carbon steel. The side walls of the cylinder are made thicker than the desired final thickness of the cylinder side wall. One end of the cylinder is closed. The interior of the cylinder side walls is then honed to remove at least some of the excess side wall thickness. A tapered neck is then formed and tapped in the open end of the cylinder. The interior surface of the cylinder is then electropolished with a chromium rich electroplating solution to provide a surface layer with reduced iron and increased carbon and chromium on the interior surface wall of the cylinder. The cylinder may then be vacuum baked to reduce adsorbed contamination.

Abstract: A method comprising positioning, in a narrow vertical elongated space, an apparatus comprising a vertical guide track supporting a vertically displaceable carriage, said carriage having means to apply a coating to one of the said walls; securing the guide track against movement in the narrow vertical elongated space; moving the carriage vertically on the guide track while applying a coating from the carriage to one of the said walls as a vertical band; moving the guide track adjacent an area of the same wall which has not been so coated and again securing the guide track; moving the carriage vertically on the guide track while applying a coating from the carriage to the same wall as a vertical band; and repeating the described application of coating bands until a substantial portion of the wall is coated.

Abstract: Apparatus for applying a coating to the exterior surface of a double curved shell which is circular in horizontal section comprising a guide track, having top and bottom ends, adapted to be vertically positioned outwardly from the shell and when so positioned having a contour generally like that of the double curved shell; apparatus at the guide track top and bottom ends for rotating the guide track around the shell about a substantially vertical axis; a carriage mounted on, and movable along a substantial length of, the guide track from which a coating can be applied to the shell; and drive apparatus cooperating with the guide track for driving the guide track around the shell.A method is also disclosed in which the apparatus is used to apply a series of horizontal circular coating bands on the shell.

Abstract: Apparatus for applying a coating to one of two walls forming a narrow vertical elongated space comprising a vertical guide track supporting a vertically displaceable carriage thereon adapted to removably fit in the said narrow vertical elongated space; a power driven system for vertically displacing the carriage; and a system supported by the guide track for releasably securing the guide track against movement lateral to the two walls and sideways in the narrow vertical elongated space.

Abstract: Apparatus and method for depositing a bed of polymeric insulating foam on a horizontal or sloped surface. The apparatus rolls on the surface being insulated and while it moves forward, lateral bands of insulating foam are sequentially and rapidly deposited by spraying a foamable liquid from a nozzle mounted on a carriage reciprocally moving on a track on the apparatus.