Abstract: This invention relates to a food production apparatus which is preferably used in the preparation of foods such as fried potatoes. In the invention, powder obtained by pulverizing and drying potatoes or the like is provided with water and stirred, and the resulting mixture is extruded to be formed into a predetermined shape. In the invention the mixture of the powder and water is shaped by extruding it through extrusion holes communicating with a mixing chamber, and the shaped mixture which has been extruded from the shaper is then heated. According to the invention, the food is able to be prepared at a desired time and food which has just been prepared is able to be provided in the apparatus. Further, the powder can be preserved for a long time without lowering its freshness, and the powder is mixed with water and shaped as a food material rapidly at a desired time.

Abstract: Oxetanocin derivatives represented by formula: ##STR1## wherein X represents H or ##STR2## or a pharmacologically acceptable salt thereof exhibit an anti-viral activity. Anti-viral compositions comprising the oxetanocin derivatives or their pharmacologically acceptable salts as the effective ingredient are also provided.

Abstract: Polylactic acid microspheres having an average particle diameter of about 0.1 to 10 .mu.m which are produced from solution containing a physiologically active substance by the solvent-evaporation drying process. The microspheres are produced by emulsifying the solution in a non-solvent by the aid of ultrasonic wave. The microspheres produce a sustained release effect of the physiologically active substance.

Abstract: The electro-magnet relay of the present invention utilizes an iron core and an armature both formed as flat plates stacked together. Further, a stationary leaf spring and a moveable leaf spring are provided in the middle section of the iron core having two legs and being shaped as an inverted U. The armature is supported in a hole located in the insulating substrate and may swing to a degree determined by a striking piece formed on the armature. Coil terminals and contact terminals protruding from the bottom of the insulating substrate are arranged in a single line in the electro-magnetic relay of the present invention and may be installed on a high density printed circuit board.

Abstract: A belt tensioner has a shaft having an oil reservoir in a lower portion thereof and having an external thread and rotatably mounted in a body, a torsion spring provided between the body and the shaft so as to urge the shaft in a rotational direction, and a cylindrical rod having an internal thread engaged with the external thread of the shaft. A lower end of the rod being projected from the body so as to be operatively connected to a tension pulley for a belt. The torsion spring and both the threads are arranged to project rod by the rotation of the shaft urged by the torsion spring. An oil passage is provided in the shaft so as to communicate the oil reservoir with the bore above the internal thread of the rod.

Abstract: A curved escalator includes guide tracks for defining a stairway path which includes a constant slope intermediate section, horizontal landing sections, and transient sections smoothly connecting the intermediate section and the landing sections. Each section of differing slope has a differing radius of curvature which when viewed in plan, is inversely proportional to the slope angle, thereby eliminating the need for drive chains to change the distance between the step axles. Turn-around mechanisms that are compact and simple in structure are also disclosed.

Abstract: A belt tensioner has a shaft having an external thread and rotatably mounted in a body, a torsion spring provided between the body and the shaft so as to urge the shaft in a rotational direction, and a cylindrical rod having an internal thread engaged with the external thread of the shaft. An upper end of the rod being projected from the body so as to be operatively connected to a tension pulley for a belt. The torsion spring and both the threads are arranged to project rod by the rotation of the shaft urged by the torsion spring.

Abstract: This invention relates to a novel 4'-demethyl-4-epipodophylltoxin derivative of the formula: ##STR1## (wherein R.sub.1 is a lower alkyl group; X.sub.1 and X.sub.2 are each a hydroxyl group or an amino group substituted by one or two lower alkyls, provided that either one of X.sub.1 and X.sub.2 is an amino group substituted by one or two lower alkyls and the other is a hydroxyl group) and salts thereof.

Abstract: A casing construction including a left post and a right post, each of the left post and the right post being large in width and formed at its front surface with a mounting portion for mounting a plurality of shelves in a plurality of vertically arranged layers, at its rear surface with a mounting portion for mounting a back board, a mounting portion at its upper end for mounting a ceiling board and a mounting portion at its lower end for mounting a floor board. The left post and right post having a variety of functions to perform have the shelves, back board, ceiling board and floor board threadably connected thereto. In this casing construction, the left post and right post perform the function of separating the shelves from cables. A plurality of such casings can be arranged in side-by-side relation to provide a series of casings depending on the size of the electronic equipment intended.

Abstract: This invention relates to novel 4'-demethyl-4-epipodophyllotoxin derivatives represented by the general formula (I), and salts thereof: ##STR1## wherein R is a lower alkyl group, and X.sub.1 and X.sub.2 are independently a hydroxyl group or an amino group, the one being an amino group and the other being a hydroxyl group. These novel derivatives have a high carcinostatic activity and a relatively high water solubility and hence are expected to be useful as carcinostatics.

Abstract: Disclosed herein is a process for producing 2-chloro-6-nitrobenzonitrile by making reaction of 2,3-dichloronitrobenzene and an alkali cyanide in an aprotic solvent or in a basic solvent in the presence of cuprous chloride or in the presence of cuprous chloride and a cupric salt.

Abstract: A process for the production of 2-chlorobenzonitrile derivatives represented by the general formula (I): ##STR1## (wherein n is a number of 1 or 2) characterized by reacting a compound of the general formula (II): ##STR2## (wherein Cl.sub.n is as defined above) with lithium chloride or a mixture of lithium chloride and anhydrous aluminum chloride or with lithium aluminum chloride in an aprotic solvent.

Abstract: In communication equipment such as a telephone exchange machine, a compact and easily accessible arrangement of a plurality of gate-type or rotatable frames.

Abstract: A transportable telephone exchange apparatus which includes small capacity telephone exchange facilities which are divided into a plurality of containers for transportation to an installation site by boat or by vehicle, has an improved frame packing density within the frame and is constructed to facilitate maintenance.