Abstract: A ruffling device adapted for mounting on a sewing machine, includes: a base for attachment to a presser bar of the sewing machine, a pivotal lever mounted on the base connected to a needle bar of the sewing machine, so that the pivotal lever may be reciprocally pivoted as a needle-bar is vertically reciprocally moved; a work folding lever for folding a work fabric and movable in forward and rearward directions with respect to a feeding direction of the work fabric for a sewing operation, a motion conversion mechanism for converting the pivotal movement of the pivotal lever into the forward and rearward movement of the work folding lever, so that the work folding lever cooperates with a presser foot mounted on the base for forming a ruffle on the work fabric, a timing adjusting device for adjusting an operation timing of the work folding lever, and a stroke adjusting device for adjusting a stroke of movement of the work folding lever.

Abstract: In a solid-state laser, a YAG laser generates laser beam with a predetermined wavelength in response to which a titanium-sapphire laser is pumped to generate laser beam with a predetermined wavelength which is administered through a fiberscope to irradiate focuses, treating or destroying the same.

Abstract: A centrifugal hydraulic cancel mechanism for the rotating clutch in which a first cylindrical body and a second cylindrical body whose diameter is smaller than the first cylindrical body are set on a same central axis, frictional plates are attached to an inner surface of the first cylindrical body and an outer surface of the second cylindrical body, which transmit torque with their friction, a piston is arranged to move forward and backward to the frictional plates, a fluid chamber is formed on the opposite side of the piston in respect to the frictional plates, and a cancel chamber is formed at an opposite side to the fluid chamber in respect to the piston, where oil pressure can be supplied and discharged, comprises an auxiliary oil chamber formed closer to the central axis than the cancel chamber, and a fluid passageway connecting the cancel chamber and the auxiliary oil chamber.

Abstract: A work cutting attachment for use with a zigzag sewing machine having a presser bar, an endwise reciprocating needle bar and a feed dog. The attachment includes a base plate removably secured to the presser bar, a presser foot mounted on the base plate for holding a work fabric against the feed dog and having a needle clearance aperture, a fixed blade secured to the presser foot, a cutting blade operable in cooperation with the fixed blade, a support mechanism for supporting the cutting blade for vertical movement relative to the fixed blade, and a driving mechanism operatively connected to the needle bar for transmitting the vertical movement of the needle bar through the support mechanism to the cutting blade so as to move the latter vertically relative to the fixed blade.

Abstract: The equipment of the present invention has a plurality of storing cases in which the blood is stored and which is refrigerated by respectively provided Stirling refrigerator, in a keeping-cool room kept at a low temperature. According to the present invention, it is possible to obtain a very low temperature condition less than the recrystallization temperature of the ice in each of the storing cases, refrigerating each storing case wherein the blood is stored by each Stirling refrigerator with high performance coefficient in a very low temperature. A very low temperature condition is realized at a low cost and a high recovery is obtained, which results in that a great deal of blood is stored stably. Furthermore, taking blood in and out is carried out automatically and without the necessity of the operator's entering the keeping-cool room, by providing means for putting the blood in each storing case and taking it out from each storing case and performing the remote control of this means.

Abstract: An overcasting attachment for use with a sewing machine includes a cross thread guide lever driving mechanism for transmitting the movement of a needle bar interlocking mechanism operatively connected to a needle bar of the sewing machine to an upper cross thread guide lever and a lower cross thread guide lever supported by a base plate. The cross thread guide lever driving mechanism operates to synchronize the movement of the lower cross thread guide lever toward a position of engagement with a bobbin thread and the engagement of a lower cross thread with the upper cross thread guide lever.

Abstract: A work cutting attachment for use with a zigzag sewing machine having a reciprocatory needle bar, a presser bar and a feed dog. The attachment includes a base plate, a mounting mechanism for removably securing the base plate to the presser bar, an interlocking mechanism pivotally supported on the base plate and engageable with the needle bar for vertical swinging movement therewith, a movable and a fixed knife disposed generally behind the needle bar relative to the direction of work advancement, a guide member for guiding the fabric chip cut by the knives in a direction moving away from the work fabric to be sewn, and a presser foot disposed generally below the needle bar and cooperating with the feed dog to hold and feed the work fabric to be sewn.

Abstract: Device for soldering a printed board, equipped with a printed substrate conveyor, which effects soldering of chip parts on a printed substrate by moving the printed substrate through a molten solder wave formed by providing a nozzle in a solder tank accommodating molten solder, and a vibration imparter for giving vibration to the printed substrate when it is passing through the molten solder wave.

Abstract: A method for producing an alkenylbenzene by catalytically dehydrogenating an alkylbenzene non-oxidatively in the presence of steam in the reaction zone comprising a fixed-bed of potassium-containing dehydrogenation catalyst particles, wherein the potassium-containing dehydrogenation catalyst particles are prevented from powdering by (a) using a fixed-bed comprising particles of at least two kinds of potassium-containing dehydrogenation catalyst with respectively different potassium contents and (b) arranging the catalyst particles so that those with higher potassium content are not disposed on the inlet side of said catalyst bed with respect to the reaction.

Abstract: The present invention relates to an attachment for a sewing machine, and more particularly to an overcasting attachment for use with a lockstitch sewing machine which is prepared for straight stitching, wherein needle-like thread guide pieces are provided for passing an additionally prepared thread or threads from sideways around the needle point at a suitable time, making use of the vertical reciprocating movement of the needle, so as to engage the thread or threads with the sewing machine threads for straight stitching.