Abstract: A water heater, converted from existing water heaters or in newly designed and manufactured water heaters, having a condenser tube of a refrigeration unit in thermal conductive contact but not intimate contact with the water to be heated, and having a sheath tube in conjunction with and outwardly disposed to the said condenser tube, and having the inter-space or inter-spaces between the said condenser tube and the said sheath tube filled with thermal conductive material, said inter-space being open or fragilely rupturable to the outside of the water heater.

Abstract: Apparatus for cutting yarn, cord, rope or any linear type material into a multiplicity of pre-determined desired lengths having a base with openings therein adapted to guide the material to be cut therethrough and into related partially helical grooves provided in said base, a material pulling means rotatably mounted on said base and comprising a spindle around which the material is wrapped and a clamping means for holding the leading end of said material, a cutting means fixedly mounted on said material pulling means and rotating therewith in relation to the said base, said cutting means having the rotatably described plane of its cutting edge proximately above the uppermost end of said partially helical grooves.