Abstract: A part-to-part joint structure for fixing a first eyeglasses part to rotate relative to a second eyeglasses part in a pair of eyeglasses is provided comprising: (a) a ring-like piece having a joint extension integrally formed thereto for fixing to the first eyeglasses part; (b) a hammer head-like projection integrally connected to the second eyeglasses part to be press-fitted in the ring-like piece; and (c) an annular bush of a flexible material, the annular bush being so sized that the annular bush may be press-fitted in the ring-like piece, and the hammer head-like projection may be press-fitted in the annular bush, thereby fixing the second eyeglasses part rotatably to the first eyeglasses part, wherein at least one of the ring-like piece and the annular bush has a horizontal slot made therein for permitting the second eyeglasses part to rotate in a limited range, relative to the first eyeglasses part.

Abstract: Disclosed is an improved eyeglasses frame structure whose articulated joint between the temple and the front can be formed without recourse to soldering, and therefore, such eyeglasses frame structure is advantageous to the making of frames of metals or alloys of poor solderability. For example each temple has a pivot axle bent and rising from its front end. A joint piece is connected to each rim or lens, and has a pivot hole made at its intermediate portion. The temple is pivotally connected to the joint piece by inserting the pivot axle of the temple in the pivot hole of the joint piece. The temple can be opened until it abuts the upright end of the joint piece to be held in alignment with the joint piece. Thanks to no soldering required frames can be made at an increased efficiency.

Abstract: Method and apparatus for machining steel-ball guide grooves in guide rail portions of a linear-motion stage, whose movable member performs linear motions with respect to other movable members. In accordance with this method, first, a lower plate (2), which is an immovable member of the linear-motion stage, and an upper plate (3), which is a movable member thereof, are inserted into a recess portion (25) of a work holding element (21) in such a way that guide rail portions (4 and 5) are faced to each other. Then, the positional relation between the lower plate (2) and the upper plate (3), which are in a fixation state, is established by a pressing unit (31) and a pushing unit (32). Subsequently, a wire is inserted between the guide rail portions. Moreover, the work holding element (21) is caused by a two-dimensional motion device to perform a two-dimensional motion in a horizontal plane.

Abstract: Disclosed is an improved structure for coupling some selected parts of a pair of glasses, particularly for fixing a lens to an associated rim and at the same time, the rim to the joint piece, to which one or the other temple is hinged. The rim has a loop hole at its outer side, dividing the rim circumference into upper and lower rim halves. The rim has two broach sections fixed to the opposite ends of the upper and lower rim halves, and the joint piece has a hollow coupler member to permit the broach sections to be press-fitted therein, thereby holding the lens inside the rim. Two catch pins are fixed to the inner sides of the adjoining rims. These catch pins are inserted into the lateral holes of the opposite ends of the bridge, thus detachably connecting the bridge to the adjoining rims.

Abstract: A semiconductor capacitive acceleration sensor is configured so that it can be constructed in a small size, it has a high detection sensitivity, and the detection output characteristic is linear.

Abstract: An improved joint structure of frameless spectacles for connecting a joint section of a temple or a bridge to an associated lens is described. In order to improve productivity requiring no soldering and to prevent causing no stress in the lens, a bolt is inserted in an engagement aperture of the joint section of the temple or bridge, and in an engagement aperture made in the temple-to-lens or bridge-to-lens jointing area of the lens to be tightened by an associated nut. The engagement apertures and the bolt having such a shape that relative rotation may be prevented between the joint section, the lens and the bolt.

Abstract: Synthetic resin structural members are inserted into a hollow joint member to abut each other in the joint member. A bearing-pressure damping member is fitted into each of bolt holes on the members, axes of bolts extend alternately in two mutually perpendicular directions. The structural members and the hollow joint member are secured with bolts and nuts. Due to damping action resulting from elastic deformations of the damping members, a load is substantially evenly distributed over the whole bolts to prevent concentration of the load to some of the bolts. The arrangement of the bolts with their axes extending alternately in two mutually perpendicular directions will shorten the length of the joint member.

Abstract: A lens coupling structure couples a bridge or a temple to a lens of rimless eyeglasses. A bridge or a temple is coupled through a flanged bush to the lens which is formed with a screw hole and a recess. The coupling portion of the bridge or temple and the flanged bush are formed with a screw hole. A fixing screw extends through the bridge or temple, the flanged bush and the lens. The flanged bush has a flange and a cylindrical portion received in the hole formed in the lens. The corresponding portion of the bridge or temple has a protrusion adapted to be received in a recess formed in the flanged bush. The protrusion may be provided on the fixing screw or a seating plate mounted between the flanged bush and the bridge or temple.

Abstract: A machine tool having pallets each being movable between machining region and non-machining region. At the machining region, there are provided a movable column which supports a spindle head, and a stationary table confronting the column. In front of the stationary table, a workpiece handling station is provided which defines the non-machining region. When one of the pallets is positioned at the machining region for machining to the one of the workpieces, another pallet is brought to the non-machining region, where already machined workpiece is replaced by a new workpiece, and the another pallet is again introduced into the machining region while the first workpiece is still subjected to machining. Machining to the new workpiece is achievable by simply moving the column within the machining region.

Abstract: Semiconductor device in which a semiconductor chip is fixed to a lead frame by Sn-Cu alloy solder with a first metal layer interposed between the chip and the solder. The first metal layer is formed at a thickness ranging from 2000 .ANG. to 3 .mu.m, and made of a metal selected from Ti, Cr, V, Zr, Nb and an alloy containing at least one of these metals. A second metal layer made of Ni, Co or an alloy containing at least one of these metals may be interposed at a thickness smaller than that of the first metal between the first metal layer and the solder.

Abstract: Disclosed is a document stand, wherein guide lines with varying colors or patterns for facilitating the reading of rows of letters or characters are provided on a transparent plate disposed in front of a main plate, so as to prevent misreading or omission of a portion of a document, without the need to use a guide rod or the like as a ruler.

Abstract: An automatic tool changing apparatus is disclosed which has first to fourth cam mebers (37, 42, 47, 51) integral with a drive shaft (23). The cam members operate cam index mechanism (FIG. 6), shaft drive mechanism (FIG. 7), claw driving mechanism (FIGS. 8 and 9), and tool clamp-unclamp driving mechanism (FIGS. 11 and 12). The apparatus comprises a main spindle head (3), a main spindle (11) rotatably disposed in the main spindle head (3), tool magazine (8) mounted on the main spindle head (3), a first sleeve (26) rotatably supported by the main spindle head (3), a second sleeve (30) slidable in axial direction thereof and rotatable together with the first sleeve (26), a swing arm (16) disposed at one end of the second sleeve (30), tool holding claws (15) provided at the swing arm (16), claw opening and closing means (FIG.

Abstract: A machine tool with a vertically reciprocating spindle head has an automatic tool changer including a rotatingly indexable tool support connected to the machine tool frame and vertically movable independently of the spindle head, a first cam-and-crank mechanism activated by spindle head vertical movement to move the tool support with the spindle head during a portion of the tool changing operation, a second cam-and-crank mechanism also activated by spindle head vertical movement for opening and closing a tool holder on the tool support during another portion of the tool changing operation, and a vertical stop for preventing vertical movement of the tool support with the spindle head into the machining region.

Abstract: A method for the manufacture of a fiber reinforced thermosetting resin molding material, which comprises feeding a liquid thermosetting resin composition to the surface of at least one transfer roller in rotation, causing the resin composition adhering to the surface to be spread in the form of particles by a spreading roller opposed across a gap to the transfer roller and rotated in the same direction as the transfer roller, allowing the spread said resin composition to be piled up in a state mixed with reinforcing fibers separately spread, and subsequently removing the entrapped air from the resultant pile thereby enabling the resin composition to wet out the reinforcing fibers in said pile.

Abstract: A pressure sense recognition control system having at least one pressure sensor module for detecting the two-dimensional distribution of the component forces in the three directions in the rectangular coordinate system of a force applied to the pressure receiving surface of the pressure sensor modules. The pressure sensor module has at least one pressure sensor cell having a pressure sensing member made of single crystal silicon, and a plurality of diffusion type strain gauges provided on the surfaces of the pressure sensing member which are substantially perpendicular to the pressure receiving surface and for detecting the three component forces applied to the pressure surfaces in response to the changes of an output of a bridge composed of the strain gauges. These members are mounted on an object, the drive of which is to be controlled.

Abstract: A cutting unit and a grinding unit are aligned adjacently and adopt a common contour tracing means numerically controlled with respect to a X-Y plane coordinate system. A cutting tool and a grinding tool are provided on respective .theta.-axes along Z-direction and are commonly controlled about the .theta.-axes to direct in a tangential or a normal direction of the contour. The cutting and grinding tools are shiftable away from a reference point of the .theta.-axis to finely adjust a cutting line and a grinding edge outward/inward a reference contour.

Abstract: A machine tool with a vertically reciprocating spindle head has an automatic tool changer including a rotatingly indexable tool support connected to the machine tool frame and vertically movable independently of the spindle head, a first cam-and-crank mechanism activated by spindle head vertical movement to move the tool support with the spindle head during a portion of the tool changing operation, a second cam-and-crank mechanism also activated by spindle head vertical movement for opening and closing a tool holder on the tool support during another portion of the tool changing operation, and a vertical stop for preventing vertical movement of the tool support with the spindle head into the machining region.

Abstract: A selectively lockable push switch adapted to be turned on in a multistage manner, including a casing, a holder movable together with a knob projecting out of a through-opening of the casing, a compression spring for urging the holder upwardly, an uneven portion formed on either one of the holder and the casing, a coiled spring provided with a lever member having an engageable portion formed at its one end such that the engageable portion is moved along a grooved displacement passage formed on the uneven portion in response to upward and downward displacement of the holder, and switch means selectively turned on in the multistage manner in response to displacement of the holder.

Abstract: An improved switch unit for use, for example, in a motor vehicle in which a first and a second switch mechanisms are integrally incorporated together with a first and a second operating members for operating the switch mechanisms so as to reduce the space to be occupied by the switch unit on the whole, while the first operating member is arranged to be rotatable in association with the depression of the second operating member for elimination of troublesome operating procedures, with simultaneous simplification of the entire construction.

Abstract: A device for indicating switch operation by variable illuminating light including a switch case, a means for controlling the switch operation provided on the case, a light transmitting window provided in the controlling means, an illuminating lamp installed in the switch case for illuminating through the light transmitting window, a moveable plate interposed between the light transmitting window and the illuminating lamp and being actuated in response to the controlling means and a light control aperture provided in the moveable plate for changing the character of the illuminating light through the light transmitting window in accordance with the actuation of the moveable plate.