摘要:
A selector slide is manually displaced by the user from an inoperative setting to a series of operative settings for adjusting exposure-aperture size. When the selector slide leaves inoperative setting, it closes a main power-connect switch connecting the camera's various circuits to the camera battery. The selector slide is provided with a pushbutton which the user depresses to initiate various control or test functions, some of which are performed only in certain settings of the selector slide, others of which are performed within all settings to which the user might move the slide in the course of adjusting aperture size, or another exposure parameter. Examples of such functions are activating a user-oriented scene-light-sufficiency indicator circuit and a circuit which indicates the state of the camera battery. Certain settings of the selector slide are reserved for flash-exposure use, and in these settings the user employs the slide to select subject-distance, and thereby indirectly the exposure-aperture size; in the flash-exposure settings, the slide also closes an enablement switch which readies a flash unit for operation. In this way, essentially only the slide and the pushbutton on it can be used to vary exposure parameters, select operating modes and exposure-parameter values appropriate for such modes, and also initiate test or monitoring operations. Preferably, a single conductive spring contact, slid by the slide and depressed by the pushbutton, engages a plurality of contact strips in varying combinations depending upon the setting of the slide and whether or not the pushbutton is depressed, to cause such contact strips, in their various combinations, to act as various combinations of electrical switches.
摘要:
A miniature still camera wherein a brick-shaped main section of the housing supports and guides an L-shaped second section the longer leg of which is parallel to and located in front of the elongated front side of the main section and the shorter leg of which is parallel to a shorter second side of the main section. The second section is reciprocable between a first position in which its longer leg conceals a picture taking lens which is recessed into the front side of the main section and the shorter leg conceals a view finder in the main section, and a second position in which the lens and the view finder are exposed and the camera is ready to take pictures. The second section cocks the shutter and/or actuates the film transporting mechanism during movement between its first and second positions and is biased to its second position by a helical spring which reacts against a lug of the main section and bears against an eyelet of the second section. The lug and eyelet surround an elongated guide rod which is mounted in the second section adjacent to and in parallelism with the longer leg. The shorter leg of the second section has a tongue which extends into and is guided by a groove in the rear wall of the main section.
摘要:
A process and apparatus are disclosed for controlling the flow of operations in electroplating plants with horizontal throughflow in which the parts to be electroplated, in particular plate-shaped parts, pass through the plant in succession and are electroplated by means of currents applied by anodes. In order to prevent undesirable, increased precipitation on the front faces or edges of parts to be electroplated which follow each other at undesirable distances apart, or at least to reduce this precipitation to an acceptable level, the position of the parts which pass through the plant in succession and/or the distances between these parts are detected and the application of the electroplating currents is controlled as a function of these positions and/or distances by switching the anodes on and off, in such a manner that the flux density is approximately the same in all regions of the parts.
摘要:
Novel plant growth regulant composition comprising as an active ingredient at least one cycloalkanecarboxylic acid compound of the formula ##STR1## in which R is hydroxyl, alkoxy, aralkoxy, amino, alkylamino, dialkylamino or the radicalO.sup..crclbar. M.sup..sym.whereinM.sup..sym. is one alkali metal ion equivalent or alkaline earth metal ion equivalent, or an ammonium, alkylammonium, dialkylammonium, trialkylammonium or tetraalkylammonium ion,R.sup.1 is amino or the radical ##STR2## wherein R.sup.2 is hydrogen, alkyl or aryl, orR.sup.1 is the radical --N.sup..sym. H.sub.3 X.sup..crclbar., wherein X.sup.63 is chloride, bromide or iodide, and n is 1, 2, 3, 4 or 5,in admixture with a solid or liquefied gaseous diluent or carrier or in admixture with a liquid diluent or carrier containing a surface-active agent.
摘要:
A process for the preparation of a 3-(arylvinyl)-2,2-dimethyl-cyclopropane-1-carboxylic acid ester of the formula ##STR1## in which Ar is an aromatic radical,R is alkyl or an alcohol radical customary in pyrethroids, andR.sup.1 is hydrogen, fluorine or chlorine,comprising reacting a compound of the formula ##STR2## with respectively, one, two or three equivalents of a base at a temperature between about -20.degree. and +60.degree. C. The compounds are insecticidally active. Numerous syntheses of the starting materials, some involving new intermediates, are also shown.
摘要:
A process for the preparation of a styryl-cyclopropane-carboxylic acid ester of the formula ##STR1## in which R is C.sub.1-4 -alkyl or an alcohol radical customary in pyrethroids,R.sup.1 is alkoxy or alkylthio, either of which may be optionally substituted by halogen,R.sup.2 is hydrogen or alkoxy, orR.sup.1 and R.sup.2 together are optionally halogen-substituted alkylenedioxy, andR.sup.3 is hydrogen or chlorine, comprising reacting a compound of the formula ##STR2## with, respectively, one, two or three equivalents of a base at a temperature below 60.degree. C. The products are insecticidally active when R is the residue of a pyrethroid-type alcohol. Various syntheses are given for the starting materials which are new.
摘要:
Alpha-isocyanocarboxylic acid compounds of the formula ##STR1## wherein R.sup.1 and R.sup.2, which can be identical or different, each represent hydrogen, alkyl, alkenyl, aryl, aralkyl or carbalkoxy orR.sup.1 and R.sup.2 together represent an alkylene chain with at least 2 carbon atoms andR.sup.3 is hydrogen, alkyl, aryl, aralkyl or carbalkoxyalkyl, or, provided that R.sup.1 and R.sup.2 are both hydrogen, R.sup.3 is an alkali metal ion,are outstandingly effective in plant growth regulant compositions, e.g., in growth inhibition stimulation or modification.
摘要:
A belt press has vertically spaced upper and lower traverses carrying respective upper and lower platens each constituted by a traverse plate secured to the respective traverse, a press plate parallel thereto, and a flexible membrane connecting the outer peripheries of the press and the traverse plates. A skirt extends from each of the traverse plates around the respective press plate to guide and confine same during pressurization of the chamber defined in each platen by the respective press and traverse plates with the respective membrane.
摘要:
4-Substituted-pyrimidin-6-yl (thiono)-phosphoric (phosphonic) acid esters or ester-amides of the formula ##STR1## in which R represents hydrogen, alkyl, alkoxy, alkylthio or alkylamino,R.sup.1 represents halogen, alkoxy, alkylthio or alkylamino,R.sup.2 represents alkyl, alkoxy, alkylamino or phenyl,R.sup.3 represents alkyl andX and Y, which may be identical or different, represent oxygen or sulphur,Which possess arthropodicidal and nematicidal properties.
摘要:
O-alkyl-O-[1,6-dihydro-1-substituted-6-oxo-pyrimidin-4-yl]-(thiono) (thiol) phosphoric (phosphonic) acid esters and ester-amides of the formula ##STR1## in which R represents alkyl,R.sup.1 represents alkyl, alkoxy, alkylthio, monoalkylamino or phenyl,R.sup.2 represents hydrogen, alkyl, alkoxy, alkylthio or dialkylamino,R.sup.3 represents alkyl or alkenyl,R.sup.4 represents hydrogen, alkyl or halogen, andX represents oxygen or sulphur,Which possess insecticidal, acaricidal and nematicidal properties.