Abstract:
At least two horizontal perforated plates are vertically spaced. A powdered or granular carbonaceous substance is fed onto the lowermost of the perforated plates and, at the same time, a hot activating gas is introduced upwardly from below the lowermost horizontal perforated plate so that the activated portion of said powdered or granular carbonaceous substance is allowed to ascend to and form a fluidized bed on successively higher perforated plates. The activated carbon of the highest grade of quality collects on the uppermost perforated plate as the final product. The manufacture of activated carbon described above is accomplished by use of an apparatus which comprises, in combination, at least two horizontal perforated plates having holes of a fixed diameter distributed at a fixed rate, two inlets disposed at a lower part of the apparatus, one for admitting the carbonaceous substance and the other for permitting introduction of the activating gas, and two outlets disposed at an upper part of the apparatus, one for discharging the activated carbon as the product and the other for releasing the spent activating gas.
Abstract:
The distance between reflection mirrors of a laser resonator is finely regulated over a wide range by driving a servo-motor upon an error signal produced due to a variation of frequency of a laser beam, converting the rotational movement of the servomotor to a linear movement by using a rotation screw means, converting the linear movement to a linear fine movement by using a lever means and transmitting the linear fine movement to one of the reflection mirrors by using a spring means which exerts a linear force on the one mirror upon the linear fine movement.
Abstract:
Disclosed is a tackifying resin which is produced by polymerizing an oligomer of isoprene, isoprene-butadiene or isoprene-1,3-pentadiene using a metal halide as a catalyst.
Abstract:
A device for automatic determination of suspended solids content in water comprises an automatic sample liquid collection unit, an automatic specimen preparation unit, an automatic filter paper feeding unit, an automatic filter paper transfer unit, an automatic suspended solids filtration unit, an automatic drying unit, an automatic weighing and display unit and an automatic process control unit. A sample liquid automatically collected is prepared automatically to produce a test specimen. The specimen is filtered through a sheet of filter paper supplied by the automatic filter paper feeding unit. The filter paper on which the suspended solids of the specimen are deposited in consequence of the filtration is dried by the automatic drying unit and thereafter weighed. The weight thus taken is automatically converted into a corresponding electrical quantity and forwarded to an arithmetic circuit, in which the suspended solids content of the given liquid is calculated and recorded.
Abstract:
A sphere of carbon which encloses an empty space and has pores formed in the shell thereof so as to provide free passage between the interior and the exterior of the sphere is obtained by coating a spherical core with a layer of finely divided coal and subjecting the coated sphere to a heat treatment at a temperature higher than the decomposition temperature of the substance of which the core is formed. The heat treatment causes the core to be thermally decomposed and evacuated from the coat which, by this time, has been hardened to a shell. A lightweight hollow sphere of activated carbon which has been activated not merely on the outer surface of the sphere but equally on the inner surface defining the empty space is produced by calcining for activation the said sphere of finely divided coal, with the said fine pores retained intact.
Abstract:
A paper feeder has a construction such that, while a sucker adapted to transfer individual sheets one by one from a stack of paper is in the process of lifting the uppermost sheet of paper from the top of the stack of paper stored in a paper magazine, air is blown against the sheets of paper adhering to the sucker so as to blow down any extra sheets entrained by the uppermost sheet being removed, whereby the individual sheets of paper are transferred one by one to a desired position without fail.
Abstract:
Partially chlorinated ethers are electrolytically fluorinated in anhydrous hydrogen fluoride. The gas which is produced consequently is passed through water and the aqueous solution of sodium sulfite-sodium hydroxide for the removal of by-products and thereafter cooled and collected. The collected product is a mixture consisting of fluorinated ethers and fluorocarbons. Chlorofluoroethers which the present invention aims to obtain are separated from this mixture by additional treatments of distillation, gas chromatography, etc.
Abstract:
An automatic adaptive controller having a data file previously supplied with various control parameters for a process to be controlled, and detectors for observing the process and disturbances introduced in the process. The data file provides to the process basic operation values, at the beginning of the process. The detectors monitor bits of information which cannot be previously provided from the data file, to automatically detect the characteristics of the process and disturbances so that the process can be controlled under the optimum conditions.
Abstract:
The display system of the present invention produces simplified environment patterns and these simplified patterns are projected on a screen which is assumed to be located a certain distance to the front of the moving body by converting the x-y coordinate of the projected patterns to voltage values, applying these voltage values to an analog electronic circuit constructed in accordance with the equations of the patterns, converting the output electric signals of the analog electronic circuit to electric signals having widths corresponding to the spatial regions, controlling respective color signal generators in proportion to the time widths so that the color signal generators generate color signals corresponding to the color distribution of the environment patterns and producing the environment patterns on a color TV monitor screen by feeding the color signals to the color TV monitor.