Abstract: A honing tool has a large-diameter portion thereof provided with a plurality of stone holding recesses arranged radially from the inner bore to the outer edge for slidably holding grinding stones. Each stone holding recess is arranged to form an upper guiding facet and a lower guiding facet at the top side and the bottom side thereof, respectively as well as a couple of side guiding facets at both sides thereof. Also, each grinding stone has an upper sliding facet and a lower sliding facet provided at the top side and the bottom side thereof, respectively for sliding directly on the upper guiding facet and the lower guiding facet. Both sides of the grinding stone are side sliding facets for running directly on the side guiding facets. Moreover, the grinding stone has a tapered facet provided on an upper end thereof at the inner bore side for receiving a pressing force of a tapered rod.

Abstract: The invention relates to a honing tool for carrying out honing working of a work with high accuracy and super precision finishing method using the honing tool. The honing tool is mainly constituted by a pilot section (5), a rough grinding section (7), a finish grinding section (10) and a correction section (13). The honing tool is sent at rapid speed while being reciprocated little, and the machining working and correction finishing of the straightness are carried out thereby the honing working is carried out. According to the invention, the machining working efficiency and the working accuracy can be improved, and the honing finishing with high straightness becomes possible.

Abstract: The invention relates to a honing tool for carrying out honing working of a work with high accuracy and super precision finishing method using the honing tool. The honing tool is mainly constituted by a pilot section (5), a rough grinding section (7), a finish grinding section (10) and a correction section (13). The honing tool is sent at rapid speed while being reciprocated little, and the machining working and correction finishing of the straightness are carried out thereby the honing working is carried out. According to the invention, the machining working efficiency and the working accuracy can be improved, and the honing finishing with high straightness becomes possible.

Abstract: An electrode for a flow-through type electrolytic cell which comprises:a frame spacer formed with a plate made of an insulating material and textile fabric made of carbon fibers disposed in the inner space of the spacer;said spacer and said textile fabric being held between a membrane and a collector plate so that an reactant flows through the inside the texture of the above textile fabric in one direction or in the reverse direction;said textile fabric being composed of thicker yarns of not finer than 5 metric counts and yarns finer than said thicker yarns which are disposed so as to cross said thicker yarns; andsaid textile fabric being fixed so that the thicker yarns are substantially in parallel with the flow direction of an aqueous solution of an reactant.

Abstract: This invention relates to a powdery coating composition having excellent anti caking ability, which comprises polymer particles having an average particle size of 0.5 to 200.mu. composed of a polymer having a softening point not exceeding 90.degree. C. as a core component and polymer having a softening point of at least 100.degree. C. as an outer component covering said core compound, and to a process for the preparation of such powdery coating composition.

Abstract: Method and apparatus for continuously and automatically packaging preferably particulate food in successive fixed amounts by using a ribbon-like film, preferably of a synthetic resin. The film is continuously payed out from a roll and is progressively wrapped around a cylindrical forming chute with the help of a plate, while longitudinally heat sealing the overlap of the opposite lateral edges of the wrapped film, to change it into a tubular form, charging the food thereinto from above the chute, heat sealing the top and bottom of a food receiving region of the tubular film, and cutting off that region from the continuous tubular film. The apparatus allows the continuous production of bags or enclosures, from the initial ribbon-like and later tubular film, charged with the food, in a simple cyclical operation.