A reduction process and apparatus wherein the flow of the reducing fluid through the fixed bed of iron ore, oxidized pellet or the like to be reduced is reversed in direction so that the iron ore, oxidized pellet or the like, at any place in the bed, may be reduced uniformly.

PURPOSE:To enable to effect centering with high speed and good accuracy by a method wherein the centering device for the belt-type material is provided so as to oppose to shoulder guide roll and bi-directional roll. CONSTITUTION:A swing frame 9, slidable toward the lower side of a forming drum, is arranged at the tip end of the automatic supplying device 1, supplying the belt-type material to the ...

PURPOSE:To supply the belt-type materials automatically and improve the productivity of the device by a method wherein a contact bonding means, bonding the belt-type material by contact, is provided at the tip end of a swing frame. CONSTITUTION:The movable supplying device 1 is arranged in a direction orthogonal to the supplying direction of the belt-type material W to be supplied to a forming dru...

PURPOSE:To improve speed change responsiveness by suddenly lowering the back pressure of an accumulator in an oil path put in the release condition at the time of down-shift on judging that it is down-shift and a driver demands sudden acceleration. CONSTITUTION:A hydraulic control device of an automatic transmission gear includes a duty ratio valve for reducing line pressure depending upon ON-OFF ...

The present invention concerns a bipolar storage battery. The storage battery (10) consists of bipolar elements (12) in consecutive mutual contact, each element comprising a plate (13) of electrically conductive material which has been coated on one side with a positive active compound (14) and on the other side with a negative active compound (15); of separator plates (16) containing electrolyte,...

The invention relates to a safety ski binding toe mechanism comprising a skid plate underlying the forward end of the ski boot sole. According to the invention, the skid plate, or the pivotable and longitudinally shiftable sole retainer, respectively, is provided with keying means preventing the skid plate from twisting relative to the ski boot sole at least within the elastic yield limits of the ...

A sole-support plate for a release ski binding is supported on the upper side of a ski by a pivot bearing and cooperates with a resilient restoring arrangement. The restoring arrangement includes an opening provided in the sole-support plate, which plate is made of an elastic material, the opening weakening the sole-support plate in the area of the pivot bearing so that it can be swung laterally t...

Preparation of compounds of general formula I: in which R is a halogen atom or a C1-4 alkyl radical. A compound of formula II: in which R is as above, is reacted with an alkaline phenoxide of general formula III: in the presence of a catalyst based on copper and/or on a copper(I) salt. Preparation of pyrethroids with insecticidal use.;

L'INVENTION A POUR OBJET LA PREPAR...

PURPOSE:To improve durability by setting a joint plate having the intermediate thickness of the thickness of a stainless-steel plate and the thickness of a side plate between a bellows part and the side plate. CONSTITUTION:A joint plate 13 is formed by bending a stainless-steel plate having the intermediate thickness of the thickness of a stainless-steel thin plate 12a used for bellows part 12 and...

The present invention provides particular phenol/formaldehyde resoles which are especially useful as foamable resins, and further provides cellular phenolic products having physical properties which are especially attractive for end-use application as construction foam. The resoles are characterized by a particular relationship between their viscosity and water content, expressed as the area bound...

An admixture for Portland cement compositions and particularly Portland cement concrete compositions which contain pozzolans such as fly ash and blast furnace slag is described which is a mixture containing at least three specified chemical ingredients. The admixture improves the strength and other properties of the compositions.

The object is to be able to draw directly on photographic paper, the whole process taking place in daylight or under normal lighting. Drawing is carried out on a veiled sensitive paper using a developing product as the ink and using either a brush or, preferably, a special felt-tipped pen. The operations of fixing are performed by the normal methods. Prints may be obtained in black and white or in...

The compositions comprise: - from 50 to 90 % by weight of at least one compound chosen from methylene chloride and trichloroethane; - from 5 to 40 % by weight of at least one compound A chosen from, on the one hand, compounds containing at least one ketone or carboxylic ester functional group and having a boiling point of between 100 DEG and 180 DEG C, and, on the other hand, mixtures of methano...

L'INVENTION CONCERNE UN PROCEDE ET UN APPAREILLAGE POUR LA MISE EN SOLUTION OU DISPERSION STABLES D'UNE POUDRE HYDROSOLUBLE. ELLE EST CARACTERISEE PAR L'UTILISATION CONJOINTE D'UN SYSTEME DE SOUTIRAGE DE LA POUDRE HORS D'UN RECIPIENT 2 PAR EXEMPLE PAR UN GAZ 4, LA DILUTION DE LA POUDRE DANS UN GAZ VECTEUR, L'ENTRAINEMENT DE LA DILUTION OBTENUE, AU MOYEN DE CE GAZ VECTEUR, A TRAVERS UNE CONDUITE...

The invention relates to an optical information recording and reproduction apparatus. It includes a processor intended to record, reproduce or erase the information on an optical disc 93, a disc-type detector 81 intended in particular to determine the diameter of the optical disc, and a controller 82 intended to control the processor's process parameters as a function of the output signal from the...

1. A process for the treatment of acid waste water containing aluminum and iron, wherein (a) the acid waste containing small amounts of colloidal silicic acid is heated to just below boiling point so as to precipitate aluminum hydroxide and hydrated iron (III) oxide and is neutralized with calcium oxide and/or calcium hydroxide ; (b) the resultant aluminum hydroxide iron (III) hydroxide precipitat...

UN DIFFERENTIEL A ADAPTATION DU COUPLE DU TYPE A PIGNONS HELICOIDAUX COMPREND UN CARTER 2 POSSEDANT UNE PORTION DE CORPS 2A A L'UNE DES EXTREMITES DE LAQUELLE UNE PORTION DE COUVERCLE 2B EST MONTEE DE MANIERE AMOVIBLE, LADITE PORTION DE CORPS ETANT USINEE POUR DELIMITER UN ALESAGE LONGITUDINAL CENTRAL 6 ET PLUSIEURS PAIRES, ESPACEES DANS LE SENS CIRCONFERENTIEL, DE LOGEMENTS DE PIGNONS LONGITUD...

A composition obtained by mixing fly ash, calciumsulphate hemihydrate and oxisludge, a product caught from gases emanating from converters during steel production. Oxisludge containing substantial amounts of iron is used in an amount comprised between 0,2 and 10%, preferably 1 to 5%. The composition is a loose mass or consists of granular products.

There is described a photopolymerizable composition which contains at least one olefinically unsaturated compound and a photosensitive catalyst containing a diketone plus 4-(N,N-dimethylamino)benzoic acid or lower alkyl ester thereof.