Abstract: A movable high amperage electrical switching buggy which is adapted for use in a corrosive atmosphere includes a wheeled chassis and spaced apart first and second electrical terminals housed on the chassis and extending therefrom. First and second electrical conductors are positioned within the housing and communicate with the first and second terminals respectively. At least one high amperage electrical switch is housed on the chassis with respective terminals of the switch being in electrical contact with the respective electrical conductors. The switch includes a first switch terminal including a piston chamber and a movable piston contact member housed therein and a second switch terminal. An insulating member is secured between the first switch terminal and the second switch terminal to prevent electrical contact therebetween unless the piston is in contact with the second terminal.

Abstract: An undercut saw having a rotating blade mounted beneath a table for selective raising and lowering movement through a table slot by operation of fluid power means. A blade guard and workpiece clamp is mounted above the table for selective movement toward and away from the table by operation of fluid power means. A pair of manually operable series connected control devices operate the fluid power means.