Abstract: A switch connected in series with the ignition coil is "on" and "off," respectively, in the presence and absence of a pulse furnished by a pulse generator operating in synchronism with the crankshaft of the engine. If the pulse width of the pulses is too small for the current in the ignition coil to reach the minimum value required for ignition, the closing time of the series switch is advanced, while if the pulse width is too long, causing excess heat dissipation in the coil, the closing time of the switch is retarded. To accomplish this, a first digital counter counts downwards for a predetermined time and upwards for a time period in which the current in the ignition coil exceeds a predetermined current. Upon interruption of the current in the coil, the then-present value in the first digital counter is transferred to a second digital counter. The second counter then counts down at a predetermined rate until a predetermined count is reached.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 --is hydrogen, alkyl of 1 to 6 carbon atoms or benzyl;R.sub.2 --is alkyl of 1 to 6 carbon atoms, cycloalkyl of 5 to 7 carbon atoms or, together with R.sub.1 and the adjacent nitrogen atom, pyrrolidino, piperidino, hexamethyleneimino, morpholino or N'-methyl-piperazino, where each of the heterocycles may have one or two alkyl of 1 to 3 carbon atoms or one or two methoxy substituents attached thereto;R.sub.3,--r.sub.4 and R.sub.5 are each hydrogen or methyl;R.sub.6 --is alkyl of 1 to 4 carbon atoms; andA--is alkylene of 2 to 4 carbon atoms;And non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful as bronchospasmolytics and bronchosecretolytics.

Abstract: Pharmaceutical compositions containing a non-steroidal anti-inflammatory compound and 5,11-dihydro-11-[(4-methyl-1-piperazinyl)-acetyl]-6H-pyrido[2,3-b]-[1,4]be nzodiazepin-6-one or a non-toxic acid addition salt thereof, and a method of using the same as antiphlogistics; the pyridobenzodiazepinone ingredient effectively suppresses the gastro-intestinal side-effects of the anti-inflammatory ingredient.

Abstract: A liquid fuel rocket engine comprises a housing having an outer annular wall and an inner annular wall which define therebetween a combustion chamber of substantially uniform cross section and leading to a converging wall section and a nozzle throat of narrow dimension. Means are provided to vary the nozzle throat section during operation of the engine in order to obtain better performance operation of the engine. The means for varying the dimension comprises a thermal arrangement whereby the cooling of the housing walls are divided up into sectors through which a propellant component is circulated. The temperature of the circulated component and the quantity of component which is circulated are advantageously controlled in order to vary the thermal expansion of the various sector portions and thereby change the axial and radial position of the walls defining the nozzle throat section.

Abstract: An improved support for holding a plurality of nozzles of a compressed air tempering apparatus in individually adjusted axial position, said support comprising an expandable member relative to which each of the nozzles is axially slidable, and mechanism for expanding the expandable member into pressure holding engagement with each nozzle to hold them in their axially adjusted positions.

Abstract: A fluid cooled rocket, comprises a tubular housing which forms an interior combustion chamber which has a closed end formed by a head containing a propellant component injector, and an opposite opened end forming a thrust gas discharge. The housing side walls define an interior combustion chamber of uniform diameter, adjacent the closed head, is formed into an inwardly converging portion, a nozzle neck portion of smallest diameter, and an outwardly diverging portion, all proceed in a direction from the closed end toward the opposite gas discharge open end.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, straight or branched alkyl of 1 to 3 carbon atoms or benzyl,R.sub.2 is straight or branched alkyl of 1 to 3 carbon atoms, orR.sub.1 and R.sub.2, together with each other and the nitrogen atom to which they are attached, are pyrrolidino, piperidino or hexamethyleneimino,A and B are each nitrogen or methylidenyl (=CH-), but other than both nitrogen or methylidenyl at the same time, andn is 2 or 3,And non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as the salts are useful as bronchospasmolytics.

Abstract: Penicillins of the formula ##SPC1##Or a pharmaceutically-acceptable, nontoxic salt thereof,WhereinR.sub.1 and R.sub.2 are the same or different and each is hydrogen, fluorine, chlorine or bromine; or when R.sub.2 is hydrogen, R.sub.1 can also be cyano, hydroxyl, azido, amino or nitro; orR.sub.1 and R.sub.2 are bonded to a ring carbon atom and constitute a single oxygen atom;R.sub.3 is hydrogen, methyl, chlorine, bromine, cyano, methoxy or carboxyl; andn is 2 to 7;Are useful for their antibacterial activity.