Abstract: A secondary air guide ring for an ignition plug, which is mounted on the outer periphery of a male thread of an ignition plug for mounting the same ignition plug in a cylinder head and provides a hermetical seal between the ignition plug and cylinder head. It is provided with an air guide hole for leading air into the cylinder and also with a check valve mechanism serving to prevent counter flow of gas.

Abstract: An escape chute made up of a framework which can be horizontally projected outward from a building; a double tubular body having an inner cylinder and an outer cylinder made of cloth, and a spiral slide cloth forming a slide surface which is fixed between the inner cylinder and the outer cylinder; an upper entrance at the top and an exit at the bottom; one or more intermediate access apertures and intermediate entrance passages made of cloth to permit entrance into the space between the inner cylinder and the outer cylinder wherein the height of the lower edge of the intermediate access aperture is higher than the spiral slide surface at the position so as to prevent a part of a person from becoming hung up upon the aperture.The intermediate entrance passages are held by ropes connected to the framework.One or more intermediate exits are formed on the side surface of the bottom outer cylinder at higher than the exit.

Abstract: A pharmaceutical composition containing as the essential active ingredient a benzofuran derivative of the formula: ##STR1## wherein A is --COR', ##STR2## or ethyl group; B is hydrogen atom when A is --COR' ##STR3## or --COR" substituted at the 3 or 4 position of the benzofuran nucleus when A is ethyl; R is an alkyl group having 1 to 5 carbon atoms; R' is an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 3 carbon atoms or phenyl group; R" is an alkyl group having 1 to 4 carbon atoms, phenyl or phenylalkyl group wherein the alkyl moiety has 1 to 2 carbon atoms; and the substituted propoxy group is at the 3, 4, 5, 6 or 7 position of the benzofuran nucleus; or a pharmaceutically acceptable acid addition salt thereof in admixture with a pharmaceutically acceptable carrier. The pharmaceutical composition possesses a superior .beta.-adrenergic blocking activity and local anesthetic activity, and is useful for the prevention and treatment of heart diseases, hypertension and hyperthyroidism.

Abstract: A loading device has a loading arm swingable about a swing axis and movable parallel to the swing axis, so as to pick up a desired number of works from a work supplying spot. A pick-up head is mounted on the loading arm and moves therewith through a series of upward, swivel and downward movements to transport the work. A mobile frame moves together with the loading arm and is provided with stoppers each of which cooperates with a stopper on the loading arm to stop and angularly position the swingable loading arm. A pair of switching elements are mounted on the mobile frame for detecting the loading arm height which is determined by the work loading condition.