Abstract: A push button switch provided with a multistage actuation interlock function is composed of a casing; a pair of push buttons arranged side by side passing through an upper lid of the casing; a plurality of movable bodies arranged movably in a direction perpendicular to a depression direction of the push buttons into the casing; a plurality of movable contacts attached to the movable bodies, respectively; and a plurality of fixed contacts arranged on a base portion of the casing in confronting positional relationship with respect to the movable contacts. When each of the push buttons is depressed at each of the multistage stroke, the movable body is shifted to bring the movable contact into contact with the fixed contact, respectively in sequence. Further, an interlock plate is interposed between and associated with the two push buttons in the casing.

Abstract: An apparatus for providing a protective sheet or substrate on the upper surface of a toilet seat includes a supply storage container disposed at a first end of the toilet seat to store a supply of individual protective sheets, each having an opening, and connected in a continuous fashion. The protective sheet extends across the top of the toilet seat and a take-up container disposed at a second end of the toilet seat opposite to the first end is for taking-up the sheet after use. A mechanism is provided for advancing the sheet and winding it on a shaft.