Abstract: A valve, for sequentially operating a plurality of main valves, including a valve body having a plurality of inlet ports for connection to a plurality of main valves, respectively, and a chamber for receiving high pressure fluid from the inlet ports. A pilot valve, which may be operated by a solenoid energized and deenergized periodically by an electric timer, relieves pressure in the chamber each time it opens and permits pressure to build up in the chamber each time it closes. A sequencing valve member permits only one inlet port to be in communication with the chamber each time the pilot valve is opened, so as to relieve pressure in only the main valve connected to that one inlet port. The sequencing valve member may be an apertured rotatable disk slidably engaging valve seats surrounding the inlet ports. An operator responds to successive closings of the pilot valve for indexing the sequencing valve member so that each inlet port in turn communicates with the chamber.

Abstract: A sewing machine motor speed regulating system which provides two speed ranges which, in turn, have independently controllable maximum attainable speed adjust. This is accomplished by selectively exciting one of two variable trim resistors serially inserted in the silicon controlled rectifier gate/controller circuit.