PURPOSE:To eliminate the speed change shock and consequently enhance the speed change efficiency by a structure wherein a stand-by means is provided in the hydraulic circuit of a clutch and yet a controlling unit, which brings said stand-by means to joint when the rotations of the two surfaces to be jointed to each other of the clutch synchronizes. CONSTITUTION:A governor valve 3 and the solenoid ...

During the measurement of the length of filamentary materials, for instance a yarn, which is wound into a cross-wound package which is driven by a grooved drum, appreciable errors arise because there is not taken into account slippage. Therefore, with the present method during the winding operation the slip, which is governed by the relationship of the circumferential velocities of the grooved dru...

A device for unwinding yarn comprises a bobbin (10) having a tubular bobbin body (11) and flanges (12, 12') projecting radially at the two ends and each with a middle bore (13) coaxial with the bobbin body (11). A fastening element (20) is fastened to the flange (12) of the bobbin, and a rotary body (30) is mounted on the fastening element (20) rotatably in relation to the bobbin (10). The rotary ...

A pneumatic yarn splicing apparatus for splicing spun yarns including two nozzle pipes for untwisting and attracting yarn ends to be spliced and a yarn splicing member having a yarn splicing hole which is disposed between the nozzle pipes. The nozzle pipes have opening areas reduced with respect to the diameter of the nozzle pipe to increase the speed of flow of the suction stream of air.

A surface of a thermoelectric module, whose other surface is provided with heat-dissipating vanes, is attached to the outer surface of a body. The remainder of the outer surface of the body is provided with an insulating layer, and the heat-dissipating vanes are ventilated. The body is part of a device for processing materials, during the processing of which by the device heat is produced. The the...

This disclosure relates to a simple mounting structure for a dental X-ray apparatus. The structure is used in combination with a substantially horizontal treatment bed in such manner that irradiation tube of an X-ray head is designed to take a correct position with respect to the mouth region of a patient lying on the treatment bed with his head resting on the headrest of the bed. The structure in...

For the shelling of crustaceans, e.g. shrimps or krill, the preboiled crustaceans are reheated at short duration to a temperature, at which the body liquid just inside the shells is slightly below the boiling temperature, whereafter the crustaceans are subjected to a sudden pressure drop, such that the liquid just inside the shell boils up vividly. With the shells thus loosened the crustaceans are...

Polyurethane foams which may be rendered flame resistant by the addition of flame retardants are produced by reaction between a carbohydrate, a polyisocyanate and water in the presence of a suitable surfactant and polyurethane forming catalyst.

Refractory lining for e.g. casting boxes comprising a refractory matrix and precipitated silica, the silica being precipitated in situ to form a structure, imparting to the material a volume weight of from about 0.8 to about 1.2 g/cm3, the material being substantially free from carbon, hydrogen and available oxygen; process for the manufacture of such refractory lining.

1490789 Belt building drum assembly PHOENIX GUMMIWERKE AG 24 Oct 1975 [19 Nov 1974] 43909/75 Heading B7C A winding drum assembly for use in the production of a reinforcement belt for a vehicle tyre, comprises: a drum 1; an inflatable cylindrical jacket 2 in the form of a radially expansible cylindrical portion 3 and two annular walls 4, 5 attached at bending sites 6 to the cylindrical portion 3; t...

1. Apparatus for determining oxygen concentration in gases, liquids and tissues by measuring the decrease in light emission of a luminescent surface (Fst) with an excitation light of a certain wave length comprising a light source (L) for producing the excitation light and a device (F2 , PM) for measuring the intensity of the emitted light, characterized in that the surface (Fst) is the surface of...