Abstract: An improved therapeutic bed comprising a plurality of substantially parallel rubber wires placed on a bed frame and a vibrating motor and an intermittent hitting plate operatively associated with the rubber wires for massaging and treating various portions of the human body.

Abstract: A therapeutic bed comprises a plurality of elongated tubular wires connected to a pair of bed frames for forming a bed floor to massage or treat various regions of the human body lying prone thereon.

Abstract: An efficiency and safety and economy-improved water heating system with a water-containing casing around a coaxially central upright flue having a combustion chamber at the bottom which is open for the purpose and a closed upper end, and, connecting with the upper end of the upright flue, a plurality of downdraft flue elements passing helically downward through the water-containing casing to a power-exhaust element which positively draws combustion by-products up through the flue and down through the flue elements for heating water flowed through the casing; improved, readily removable perforate basket burner structure produces diverse, well ventilated combustion paths in the combustion chamber further enhancing efficiency and safety and ability to use the unit with gas or oil.

Abstract: A cupola system for production of gray iron employs otherwise wasted heat to preheat fuel, pig iron, flux and compressed air fed into a melting furnace, by diversion of melting furnace exhaust-gases through a preheating furnace containing feeding conduits for the fuel, pig iron and flux, and for the compressed air; the preheating furnace is laterally inclined downwardly from a point of exhaust to a chimney, to the melting furnace; the diverting means includes a closed, downwardly concave reflecting top over the melting furnace, and the preheating furnace has a concave roof; an important provision of the invention is employment of a maximum number of conventional size and shape tuyeres in a radial array in the melting furnace.