A digital measuring apparatus for measuring the distance between two target lines formed on a test sample by the use of circular scanning or the like includes an optical pulse scale disposed in such a predetermined relationship with the target lines as to correct any measurement error resulting from circular (or angular) scanning. A scanning system is disposed to scan the target lines and the optical pulse scale in a predetermined relationship, thereby producing optical target-line position sign…

Heat sensitive recording to produce a multicolor indication is effected by bringing a heating element close to or in contact with a heat sensitive recording material for multicolor indication, the recording material has two or more heat sensitive recording layers. The temperature of the heating element is controlled to produce patterns having different colors depending upon the heat sensitive temperature of each heat sensitive layer.

A liquid crystal display device is driven by alternating current applied thereto by a switching circuit comprising a group of MOS transistors. The transistors are switched in response to display signals applied to the respective gate electrodes by a control circuit such as the output circuitry of a computer.

A knitting machine is made to be adaptable to a wide range of knitting patterns and knitting conditions by providing of a carriage, individual cam control structural units or modules which may be individually replaced. Each module has a standard mounting arrangement, but has individual cam and cam control arrangements.

An exposure meter comprises exposure detecting means connected with an electric power source and including a photoelectric element, means connected with the photoelectric element to introduce exposure influencing factors thereinto, and means connected with the photoelectric element and with the introducing means to produce a proper exposure signal. Indicating means is connected with the exposure detecting means and operable to indicate a proper exposure in response to the proper exposure signal….

Described is a method of controlling an electro-magnetic molten metal pouring device which comprises an electro-magnetic pump which is adapted to generate a traveling magnetic field by a.c. excitation thereby to impart impellent force to molten metal present inside the pump, a molten metal reservoir located on one side of the pump, and a nozzle positioned on the other side of the pump; wherein supplying of molten metal to the molten metal reservoir is started and stopped respectively by detectin…

A strain of bacteria is added to a fermentation system wherein yeasts or molds capable of assimilating hydrocarbons or carbohydrates are fermented using hydrocarbons or carbohydrates as the main carbon source, and mixed culturing is carried out.

Left and right steering clutches of a vehicle are released and corresponding brakes are then applied by respective linkages respectively actuated by left and right steering levers, and a third linkage including a force equalizer and actuated by a single brake pedal applies equal braking force simultaneously to the left and right brakes independently of the operation of the steering clutches.

Apparatus for heating yarns of indefinite continuous length as the yarn advances longitudinally comprises an arc discharge device positioned in the vicinity of the yarn or in contact therewith so that the arc follows the yarn or passes through same. Means may also be provided to moisten the yarn with a conductive fluid before the arc is applied.

A device for limiting the delivery output of a jack having a complementary chamber of substantially smaller diameter opening into the end of a main delivery chamber, the complementary chamber having a delivery conduit, a deformable member coupled in translation with a piston rod and being capable of abutting the piston, the deformable member being capable of penetrating into the complementary chamber from the main delivery chamber and being of slightly smaller diameter and having complementary w…