Abstract: A self-cleaning nozzle for lithographic printing dampeners includes a central liquid duct and an air expansion chamber surrounding the liquid duct and defined by a cylindrical wall closed at an entrance end by a baffle having circumferential slits therethrough and at an exit end by a planar end wall spaced from the termination of the liquid duct and forming a mixing corridor therebetween. The end wall is positioned perpendicular to the liquid duct and to the direction of air traveling through the expansion chamber, thereby increasing turbulence in the air to more effectively break up the liquid stream into fine droplets. A slot orifice is formed in the end wall and is defined by a peripheral surface which forms an acute angle with an inner surface of the end wall and an obtuse angle with the outer surface thereof.

Abstract: A computer controlled system for the diagnostic testing of two wire telephone lines. The system comprises a control means having a programmed digital computer and associated memory, a line test network, a user station and an interface for interconnecting these elements and one or more telephone exchanges and a plurality of two wire telephone lines extending from the exchanges. The line test network is responsive to the digital computer and includes means for generating a plurality of line characteristic signals during a test cycle for a selected line. The characteristic signals are representative of the resistance and reactance between a reference potential and each of the two wires of a selected line, and between the two wires of the selected line. The line characteristic signals are transformed to signals indicative of the line identity, line length, type of termination, type and location of equipment connected to the line and existence, approximate location and type of faults along the line.

Abstract: A portable assembly for supporting stacks of cheese hoops in an inclined position from the vertical and including means for pressing the stacked hoops so as to press the whey therefrom and permit it to drain downwardly from one hoop to the other where it is collected by means of an inclined floor. The frame includes support members for removably but firmly holding the stacks of hoops as they are being pressed by cylinder and piston units located at the top of the assembly. Control means are provided for actuating the units in extending or contracting directions.