Abstract: An ultrasonic humidifier includes a spraying chamber for receiving water received therein, a vibrator adapted to make ultrasonic vibrations, a blower, and a perfume case. Ultrasonic waves are applied to the water by the vibrator to produce a water spray in the form of a mist. The water spray is emitted, by driving the blower, into a room by way of a jet of air scented by the perfume to thereby not only moisten the air in the room but also to give forth a pleasing fragrance. The humidifier further comprises an air-feeding suction port hole formed in one side wall of a body of the humidifier. The perfume case is installed at the air suction port hole so as to be demountable from outside the body of the humidifier.

Abstract: A household humidifier comprising a closed water tank, a demineralizer, an air exchange pipe for introducing the outside air, a housing defining a chamber, and a coiled spring. The demineralizer has a container containing ion-exchange resin. The water tank has a water supply port through which the demineralizer and the air exchange pipe can be inserted into the tank. One hollow end of the container is rotatably connected to the chamber such that the container is in communication with the chamber. The container is biased downward by the spring so that the container always lies on its side.

Abstract: An improved oil stove of the type including a cylindrical burning wick adapted to be displaced up and down as required is disclosed which ensures that a burning sleeve is entirely disconnected from a hot dish containing the burning wick therein when the oil stove falls forward due to an occurrence of an earthquake or the like. The improvement consists in that a guard comprising a certain number of fence rods is additionally provided with a guide member fixedly secured thereto. The guide member serves to hold the head portion of the burning sleeve when the oil stove falls forward and then the burning sleeve is tilted from the normal position. The tilted burning sleeve is then displaced due to its dead weight in such a direction as to be parted away from the hot dish so that quick extinguishment and prevention of generation of incompletely burnt gas are ensured.

Abstract: An improved oil stove of the type including a cylindrical burning wick adapted to be raised up or lowered as required by actuating a wick control handle is disclosed which includes a stopper slidably secured to the wick control handle and a stopper engagement member to which the stopper comes in engagement as the wick control handle is rotated. The stopper comprises a base plate, an engagement projection and a depress button adapted to be depressed by an operator's finger. The engagement projection is extended from the base plate to the position where it is engaged to the stopper engagement member at its upright bent portion of which upper end face is tapered. As the wick control handle is rotated in such a direction as to lower the wick, the bent portion of the engagement projection abuts against the stopper engagement member and thereby the wick control handle fails to be rotated further.