Wear parts or cutting tools, in which the part being exposed to wear is essentially an extremely difficultly grindable material (e.g., hard material), but in which the manufacture of the wear part or cutting tool requires considerable grinding operations can, according to the invention, be made better and cheaper forming the wear part or cutting tool of a compound material which is a wear-resistan...

PURPOSE:To smooth a start operation even for a high idling speed, by making a detection of power source speed, idling speed and power transmitting condition, and controlling an operation of power transmission on the reference of idling speed of the power source. CONSTITUTION:An idling switch 61, for detecting a presence of depression of an accelerator pedal 60, a car speed sensor 65, for detecting...

A power transmission device of a motorcycle comprising a main transmission case formed integrally with an engine crank case and accommodating a main transmission, and a sub-transmission case provided at the rear side of the main mission case. The sub-transmission case accommodates a sub-transmission which is drivingly connected to the main transmission and also to a rear wheel of the motorcycle th...

A stator structure for an electromagnetic device includes a core of cylindrical form having pole pieces between which are defined grooves accommodating windings. The core is formed with a diametrical slot which extends the length of the core and which locates the connections between adjacent windings.

The roller 1, 2 of a roller crusher are driven by respective hydrostatic drives 12, 13, 14; 22, 23, 24. When a lump of rock causes jamming, control means 6 controlled by the oil pressure, causes the reversal of the rollers for a predetermined time and then reintroduces forward rotation of the rollers. Between the forward and reverse rotations there may be a stoppage for a predetermined period duri...

L'INVENTION CONCERNE L'INDUSTRIE DE LA NACRE ET DE LA PECHE.

L'APPAREIL SUIVANT L'INVENTION POUR EXTRAIRE UN ANIMAL DE SA COQUILLE COMPREND UNE PORTION PRINCIPALE TUBULAIRE HELICOIDALE5 PRESENTANT UN ORIFICE D'ENTREE, UN ORIFICE DE SORTIE2 ET UNE PORTION DE FIXATION8 POUR RELIER L'APPAREIL A UNE SOURCE DE FLUIDE SOUS PRESSION ELEVEE. L'APPAREIL PEUT ETRE INTRODUIT DANS LA COQUILLE ET RELI...

A glycol and terephthalic and other aromatic acids are esterified using alkali metal titanates as catalysts and the catalysts are used in polymerization of the ester.

This apparatus is used for splicing the ends of the spun yarn by inserting the yarn ends into an air jet nozzle having one or a plurality of air jet pipes, in which they are doubled and subjected to an air jet to join each other. Yarn end cutting and holding devices for the top yarn and the bottom yarn are disposed at the both ends of a yarn inserting hole of the air jet nozzle. An automatic yarn ...

Improved hydrophilic crosslinked polyurethane foams are prepared by reacting (a) an isocyanate-capped polyoxyethylene prepolymer with (b) at least 20 moles of water per mole of NCO groups in the presence of (c) alumina hydrate, (d) a phosphorus fire-retardant additive and (e) an organic carbon compound which serves to react with phosphate anions at high temperatures (e.g., in the presence of a fla...

L'INVENTION CONCERNE UNE FIXATION DE SECURITE POUR SKI.

SELON L'INVENTION, ELLE COMPREND UN CURSEUR 14, UN LEVIER DE DETACHEMENT 20, ET UN RESSORT DE CENTRAGE AYANT LA FORME D'UN RESSORT A LAMES 21.

L'INVENTION S'APPLIQUE NOTAMMENT AUX SKIS.