Abstract: Pan-like aluminum panels are formed for finishing the exterior of a building. Secured to the flanges or outside edges of the panels are extruded male and female channel members; the male members secured at a pair of adjacent flanges and the female members secured at the other pair of adjacent flanges. To install the panels, the female edges are first screwed to the wall of the building. Then the male members of panels are slidably received and interlocked within the female members of adjacent panels. Female members of the adjacent panels are then screwed to the wall of the building, thereby exposing them for male members of yet another panel; and so on. Rows and columns of panels are thus secured to the building. An X-shaped gutter member provides mechanical and fluid continuity for the channels formed between the male and female members of adjacent panels, to eliminate moisture from becoming trapped inside.

Abstract: A push-button switch operates by depression of a push-button to move a movable contact into engagement with respective fixed contacts. The push-button when depressed rotates a roller through a predetermined angle by means of interengaging ratchet-type teeth on the push-button and roller respectively. A two-arm lever engages an indented outer surface of the roller, so that forward or reverse pivotal movements of the lever are effected whenever the push-button is depressed. The lever operates the movable contact. The roller also carries a segmented colored disc so that alternating colors are associated with the push-button to represent the respective movable contact positions.