Abstract: The apparatus comprises a lower sensor-holder head (40) and an upper sensor-holder head (72) each located at the center of an annular gasket (20, 70). Either (or both) of the sensor-holder heads are received in a space extending along the center axis of the gasket and are axially movable between a retracted position and an extended position. Preferably, one or both of the gaskets has stepped concentric rings for adaptation to different test object diameters. In operation, an object to be tested such as a wheel rim (C) is sealed between an upper gasket and lower gasket to define a space inside the wheel rim which encloses the sensor-holder heads, and to define a space enclosed between the outside of the wheel rim and an airtight bell chamber (66) which is pressurized with air or testing gas. Any leakage through the wheel rim is detected by one or more sensors on the heads.

Abstract: Multi-purpose appliance for household work comprising, in combination in a wheeled body, steam generation elements, elements for generating a jet of air and aspiration elements. Couplings for dispensing and aspiration ducts are connected to the steam generation elements, to the means for generating a jet of air and to the aspiration elements.

Abstract: A method for brightening kaolin contaminated with organic matter by decarboxylation treatment of an aqueous kaolin slurry. The decarboxylation is carried out by contacting the clay slurry with selected oxidizing agent in a pressurized reaction vessel at a temperature of 175.degree.-500.degree. C. without dehydroxylation (calcination) of the kaolin. Oxidizing agents include oxygen, ozone, hydrogen peroxide, and hypochlorite.

Abstract: A fluid indicator for use in a containment vessel. A sensor body is movable by a drive relative to the vessel. An indicator automatically indicates the location of the sensor body relative to the vessel. A passage is in the body through which fluid from the vessel can be viewed and a light emitter is positioned in the body so as to direct a beam through the fluid. A light sensor also positioned in the body receives light after it passes through the fluid and produces a signal in response thereto.

Abstract: A fastener driving tool comprising a tool housing a barrel mounted for axial displacement in the front portion of the housing, a cartridge chamber at the rearward end of the barrel, a breech member positioned within the rear portion of the housing, a cartridge ejector carried by the breech member, an ejector catch on the ejector arranged to engage the rear of the cartridge in the rearwardly displaced ready-to-fire position of the barrel, and a firing pin mounted for displacement within an axial bore through the breech member and arranged to be thrust forward by spring action, prevents rupturing of the cartridge upon firing by using the firing pin itself to prevent any movement of the cartridge ejector at the moment of detonation. The ejector is preferably a plate having a projecting catch and a bore therethrough into which the firing pin penetrates to block lateral movement of the ejector plate.

Abstract: A process for producing concentrated fruit extracts from raw fruit is described. The raw fruit, which may be whole or chopped into bits and at various states of ripeness, is mixed with water and the wetted fruit placed in a pressurized heating container such as an autoclave, where the fruit is heated at a predetermined temperature and pressurized at a predetermined pressure for a predetermined period of time so as to extract the fruit. The extracted fruit is then fed to a separator device which separates the extract from the fruit residue. The extract is then concentrated under vacuum to provide a concentrated fruit extract while the residue is discarded.

Abstract: Magazine apparatus for accommodating propellant charges including a flat coilable metal strip having a plurality of holes extending transversely therethrough for accommodating insertion of cartridges. Cartridge holding collars are formed at each of the holes by bulging or plastically deforming the strip in the region of these holes so as to form a clamping seat spaced from the plane of the strip for clampingly engaging cartridges held at the strip. Various preferred embodiments include various cross-sectional configurations of the holding collars. The method of making the magazine apparatus includes forming the collars by a multiple-step bulging process wherein the last bulging steps is formed by the cartridges as they are inserted into position on the strip.