Abstract: Disclosed herein are benzylidene compounds represented by the formula (I): ##STR1## wherein A represents ##STR2## (wherein B represents hydrogen atom or an acetyl group, W represents hydrogen atom or --CH.sub.2 --CH.sub.2 --CO--O--R, X.sup.1, X.sup.2 and X.sup.3 represent independently hydrogen atom, a hydroxyl group or a methoxyl group (two or three of them may be the same or all of them may be different), Y represents oxygen atom or imino group (--NH--), Z represents a methyl group or a phenyl group, and R represents a straight chain alkyl group having 1 to 18 carbon atoms, or branched or cyclic alkyl group having 3 to 18 carbon atoms, provided that when A is ##STR3## R is not an alkyl group having 1 to 2 carbon atoms, and when A is ##STR4## and X.sup.1, X.sup.2 and X.sup.3 are hydrogen atom, R is not an alkyl group having 1 to 2 carbon atoms), a cosmetic composition containing the same and an ultraviolet absorber comprising the same.

Abstract: A process for stabilizing a specific UVB absorbing compound which comprises adding to said UVB absorbing compound at least one specific UVA absorbing compound in an amount of 0.1-10 parts by weight based on 1 part by weight of UVB absorbing compound is disclosed and also a cosmetic composition and a UV absorber, both containing said specific UVB absorbing compound and said specific UVA absorbing compound, respectively.

Abstract: A housing of reduction gears adapted to be directly coupled to a motor is improved in order to make it possible for a drive shaft of the reduction gears to assume various positions and attitudes. The improvements reside in that the housing has a hexahedral shape, and setting holes are provided on the respective planar surfaces of the housing except for that surface through which the housing of the reduction gears is directly coupled to the motor. Preferably, bolt pockets are provided on two opposed supporting planar surfaces, and bolt holes extend to the respective bolt pockets from a supporting planar surface adjacent to the two opposed supporting planar surfaces.

Abstract: Disclosed herein are benzylidene compounds represented by the formula (I): ##STR1## wherein A represents ##STR2## (wherein B represents hydrogen atom or an acetyl group, W represents hydrogen atom or --CH.sub.2 --CH.sub.2 --CO--O--R, X.sup.1, X.sup.2 and X.sup.3 represent independently hydrogen atom, a hydroxyl group or a methoxyl group (two or three of them may be the same or all of them may be different), Y represents oxygen atom or imino group (--NH--), Z represents a methyl group or a phenyl group, and R represents a straight chain alkyl group having 1 to 18 carbon atoms, or branched or cyclic alkyl group having 3 to 18 carbon atoms, provided that when A is ##STR3## R is not an alkyl group having 1 to 2 carbon atoms, and when A is ##STR4## and X.sup.1, X.sup.2 and X.sup.3 are hydrogen atom, R is not an alkyl group having 1 to 2 carbon atoms), a cosmetic composition containing the same and an ultraviolet absorber comprising the same.

Abstract: Disclosed herein are benzylidene compounds represented by the formula (I): ##STR1## wherein A represents ##STR2## (wherein B represents hydrogen atom or an acetyl group, W represents hydrogen atom or --CH.sub.2 --CH.sub.2 --CO--O--R, X.sup.1, X.sup.2 and X.sup.3 represent independently hydrogen atom, a hydroxyl group or a methoxyl group (two or three of them may be the same or all of them may be different), Y represents oxygen atom or imino group (--NH--), Z represents a methyl group or a phenyl group, and R represents a straight chain alkyl group having 1 to 18 carbon atoms, or branched or cyclic alkyl group having 3 to 18 carbon atoms, provided that when A is ##STR3## R is not an alkyl group having 1 to 2 carbon atoms, and when A is ##STR4## and X.sup.1, X.sup.2 and X.sup.3 are hydrogen atom, R is not an alkyl group having 1 to 2 carbon atoms), a cosmetic composition containing the same and an ultraviolet absorber comprising the same.

Abstract: An outer heat insulating structure on a building roof comprises a plurality of covering layer panels provided with a heat insulating layer and female screw members secured at corner portions in the covering layer panel in alignment with through-apertures provided therein with threaded rods capable of being threadedly engaged with the female screw members. Rubbery elastic members are arranged on a waterproof layer provided on the building roof and members which are secured to the rubbery elastic members and support rotatably lower ends of the threaded rods. A heat insulating layer is defined between the covering layer panel and the waterproof layer.

Abstract: A method for preparing NC (numerical control) tapes for use with numerical control machine tools wherein the information required for preparing the NC tapes is divided into three types of information, one type being machine item information, one being tool item information, and the third being drawing information, with the three types being fed into an information processing unit, the first type information being taped, the second type information being either taped or carded, both types of information being adapted for use by the operator so that such information can be selected when needed from a storage area for use and reuse in the information processing unit, the third type of information being adapted for feeding directly into the information processing unit by reason of a movable index operation of an input table and push button operation of function keys mounted on keyboard, by an operator's manual operation thereof based on his discretion.

Abstract: A numerically controlled machine tool characterized in that the working modes of cutting tools are classified according to fixed cycles and control information is put into the machine through digital switches.