Abstract: A washing machine or dishwasher includes means for admixing with waste wash water a suitable chemical compound to convert the soluble phosphate in the wash water to insoluble form before discharge of the waste solution to a sewer, drain or other means of disposal. Among the useful chemical compounds employed are calcium chloride, calcium hydroxide and aluminum sulfate, which convert soluble phosphates, including tripolyphosphate and pyrophosphate salts, to insoluble materials, which may be removed from the effluent. Also within the invention are accessories for use with conventional washing apparatuses for effecting the insolubilization reaction, and corresponding processes.

Abstract: A method and apparatus for mixing and feeding a volatile liquid, such as liquid ammonia, with a non-volatile material, such as a fabric finisher; the method comprising the steps of feeding the liquid to a mixing vessel and, by volatilizing a portion of the liquid, cooling the vessel and, while continuing to feed the liquid and after the cooled liquid has reached a predetermined level in the vessel, adding to the liquid a measured amount of non-volatile material, continuing the liquid feed until the liquid level reaches the measured amount, agitating the liquid and material and, as the liquid volatilizes, adding additional of such liquid to maintain the liquid level at the measured amount; the apparatus comprising a mixing tank having a cover, a coolant coil in the mixing tank, first feed means having a valve for feeding a volatile liquid to the tank, second feed means having a valve for feeding a non-volatile material to the tank, a float and switch in the tank for controlling the liquid feed valve, a float a

Abstract: A device for switching a d.c. motor of a washing machine. The drive means of the reversing device is connected in series with a pressostat. This circuit is connected in parallel with the terminals of the pump contact; a terminal of the pressostat contact and a terminal of the actuation contact of the supply module of the d.c. motor are connected. The motor of the reversing device is connected in series with the pump motor through which it is energized.