Abstract: A process for producing carbamazepine ##STR1## by (i) optionally purifying a solution of CCDA ##STR2## in an anhydrous, aromatic solvent; (ii) if required distilling off water in the solution; (iii) diluting the water-free solution with an additional amount of the anhydrous, aromatic solvent; (iv) in a reactor aminating the diluted solution at from about 70.degree. C. to about 105.degree. C.

Abstract: The invention is directed to a process for the synthesis of 5-chlorocarbonyl-5H-dibenz[b,f]azepine, which is the precursor for the industrial scale synthesis of 5-carbamoyl-5H-dibenz[b,f]azepine. The latter substance is used as pharmaceutical compound. In the process phosgene is passed into a suspension of iminostilbene in an inert solvent at 20.degree. C.-60.degree. C. until the iminostilbene reacted to form an almost equimolar mixture of 5-chlorocarbonyl-5H-dibenz[b,f]azepine and iminostilbene hydrochloride, and then iminostilbene is released from the iminostilbene hydrochloride by the addition of an aqueous base. The iminostilbene so released is also made available for a complete phosgenation while an acidic reaction environment is maintained. After the iminostilbene reacted completely, the reaction mixture is heated slowly to 20.degree. C.-90.degree. C. with stirring and is detoxified by the hydrochloric acid that is formed.

Abstract: The record player has a turntable formed with an outer rim. A belt-pulley is mounted on the shaft of the turntable; another belt pulley is mounted on a pulley shaft parallel to but spaced from the turntable shaft. A belt connects the two pulleys. On this pulley shaft, a friction wheel is also mounted. The pulley shaft is mounted for movement in a plane normal to its elongation. A spring maintains the friction wheel in engagement with a motor output shaft via which the pulley shaft is driven. Normally, torque is indirectly transmitted to the turntable via the belt. However, all times when increased torque is temporarily required, the pulley shaft moves so that the friction wheel -- which remaining in contact with the motor output shaft -- engages the rim of the turntable to transmit additional torque directly to the same.