A device for determining the radiation absorption distribution in a three-dimensional examination zone which is irradiated from different positions which are situated in one plane and in which radiation sources are present. The device comprises two detector arrays consisting of separate, adjacently arranged detectors, which are situated at a distance from and parallel to each other in a first plan...

A crusher 1 used particularly for clearing woods or forest of undergrowth, is provided with a drum 2 and cutting devices 6 mounted into slots 5 of the drum. Said cutting devices comprise a counter-blade 8, a blade 7, tightening device for holding said cutting device in slot 5 and adjusting means for adjusting the height of the blade 7. Said adjusting means are preadjusted before the mounting of th...

1. Method for separating, by distillation, from a mixture containing ammonia, dimethylamine, water and sodium chloride, the said ammonia from the said dimethylamine, without causing the sodium chloride to precipitate, characterized in that : - in an evaporator (A), equivalent to a fractionating column with less than five theoretical plates, virtually all the ammonia and part of the methylamine con...

In this machine for inserting supplements in a part of a newspaper, the part of the newspaper to be filled is transported to an insertion station (44), where this newspaper part is opened in order to insert the supplement. The feed of the newspaper part to the insertion station (44) is carried out via a direction-changing transfer station (74) in which said newspaper part is aligned by means of a ...

A laminated self-destructing sealing cover (10) has a container cover area (14) and pull tab (16). Protrusions (18) extend from the outer edge of the cover area (14) to promote proper use of the cover (10). A slit (20) may be into the protrusion (18) or the outer edge of the cover area (14) to promote tearing of the cover upon removal of a container. The bottom side of the cover (10) engaging the ...

1. Aerosol packaging with an upper chamber (9) receiving a first component (A) substantially free of pressure as well as with a lower chamber (10) receiving a second component (B) together with a quantity of propulsion gas under pressure and substantially sufficient for the expulsion of the component mixture (A, B), with a connecting channel (16) between the chambers, which is to be opened with th...

A process for the detoxication of waste slurries, in particular from the leather and skin industry, containing heavy metal salt complexes and organic materials comprises treating a suspension containing at most 100 kg/m<3> of solid material with sulphuric acid and/or a mineral acid mixture composed of at least 30% by weight of sulphuric acid. The acid liquid containing the heavy metal salts is sep...

Metals are recovered from waste materials which contain an organic component and a bimetallic salt complex component which comprises complexes having the formula MIMIIXn &cirf& Aromatic and/or the formula MIMIIXn &cirf& MIIOX . Aromatic, wherein MI is a Group I-B metal, MII is a Group III-A metal, X is a halogen atom, n is the sum of the valences of MI and MII and Aromatic is a monocyclic aromat...

Improved coatings on polycarbonate are formed by polymerizing a mixture containing (1) an oligomer or a reactive resin having a molecular weight between 400 and 4,000 and containing at least two acrylic groups per molecule, and (2) an N-vinyl derivative of straight-chain or cyclic secondary amide, the polymerization being carried out in the presence of a photoinitiator.

A system for surveying a borehole or mine shaft to determine its trajectory uses a sensing probe with two spaced sets of accelerometers in sections 22, 23 measuring the components of the gravity vector along orthogonal axes at successive positions along the borehole 20. The two sets of accelerometers are connected by a pipe or cable 24 which is flexible to bend but torsionally stiff. The angular o...

Mercury is removed from an industrial effluent by treating the effluent with a sulphide or hydrosulphite of an alkali metal in the presence of a flocculant at a pH of from 7 to 12 so as to precipitate an alkaline sludge containing precipitated mercuric sulphide and flocculated material, treating the alkaline sludge with effluent to redissolve the flocculated material but not the mercuric sulphide,...

Method and apparatus for production of a combustible product gas from particulate coal in a fluidized bed system. A vertically positioned vessel includes an enlarged upper section and a smaller diameter cylindrical lower separator section, of diameter d, bounded at the bottom by a perforated or porous conical distribution plate (20) inclined at 7 DEG to 15 DEG with respect to horizontal; (the pl...

An optical read system for a disk-shaped record carrier. By means of a tracking system the read spot is centerd at the information track. The control signal for this tracking system is obtained by means of additional radiation spots which are disposed on radially opposite sides of the read spot. By subjecting the detection signals corresponding to these additional radiation spots and the read spot...

The invention relates to a device allowing a differential automatically to transmit different torques to each of its shafts. This device consists of ramps 13 and 14 between planet pinions and hubs driving the shafts 1. The reactions produced by the shaft having the higher opposing torque are transmitted by the thrust bearing 6 to the opposite planet pinion which tends to turn too freely, in order ...

The invention relates to a device for joint control of a gearbox and of a clutch, applicable in particular to motor vehicles. The device is characterised in that it consists of an articulated control lever 3 capable of being tilted in two orthogonal planes F1-F2, this lever being fastened to a linkage 4 mounted so as to move between two positions defined by two ramps 13, 14, one of them fixed, the...

1. Aerosol packaging with an upper chamber (9) receiving a first component (A) substantially free of pressure as well as with a lower chamber (10) receiving a second component (B) together with a quantity of propulsion gas under pressure and substantially sufficient for the expulsion of the component mixture (A, B), with a connecting channel (16) between the chambers, which is to be opened with th...

1. Aerosol packaging with an upper chamber (9) receiving a first component (A) substantially free of pressure as well as with a lower chamber (10) receiving a second component (B) together with a quantity of propulsion gas under pressure and substantially sufficient for the expulsion of the component mixture (A, B), with a connecting channel (16) between the chambers, which is to be opened with th...

A parameter value, which corresponds to the entire grinding width, is measured by means of a sensor (10) during grinding. The maximum parameter value, which is related to a grinding-width unit, is separated off from said first parameter value in a unit (7). Said maximum parameter value is adopted as the actual value and, in a comparison unit (6), is compared with the set parameter value, which is ...

An improved emergency and service brake actuator for a wedge type brake is of the type which includes a tubular structure extending from the brake and housing an extended end of a stem of the wedge of the brake therein. An emergency brake actuation portion is mounted on the tubular structure and includes an emergency actuation rod extending into the tubular structure. The emergency brake actuation...

This modular light-diffusing or reflecting plastic panel, notably for photography, motion-picture and television, comprises a cut panel (1), of semi-rigid material having formed therein by pressing a series of grooves (2, 3, 4), oriented to permit the folding of the panel (1) in different planes in order to impart a three-dimensional configuration thereto with multiple faces; folding tabs and tong...