Abstract: A multifunctional electrically powered and operated construction apparatus incorporating an electric saw tool, an electric planer tool, and an electric drill tool all mounted upon a common stock pillar of the apparatus. The apparatus incorporates a unique system of cooperating transmission and gear subassemblies that enable an operator of the apparatus to quickly and efficiently adjust the apparatus to toggle between sawing, drilling and planning functions.

Abstract: This new and practical model of machine is a kind of multi-function and combined processing Machine for Carpentry. On the stock of this machine are installed two or more than two types of processing tools for carpentry. The standing pillar of the stock is connected with one end of the function-changing string, while the other end of the function-changing string is connected with the function-changing shift fork. Between the function-changing shift fork and the outer shell of the function-changing gearbox are installed reset springs. The function-changing gears can be installed in the main axle of the electric machine in a moving way, and the function-changing shift fork is inserted into the fork groove of the function-changing gears. By this way, the function-changing shift fork can push the function-changing gear to slide along the main axle of the electric machine and thereby link up with the transmission gears of different types of processing tools for carpentry.

Abstract: An extendible miter saw is provided having a base (10), an angularly rotatable member (86) attached to a rear end of the base, a saw assembly (40) pivotally mounted to a support block (50), a pair of telescoping arms (70, 72) attached at opposite ends to the rotatable member and the support block, and a wheeled support assembly attached to the support block and movable along an upper surfaces of the base and extension members (26, 28, 30) extending outwardly from the base.

Abstract: An extendible miter saw is provided having a base (10), an angularly rotatable member (86) attached to a rear end of the base, a saw assembly (40) pivotally mounted to a support block (50), a pair of telescoping arms (70, 72) attached at opposite ends to the rotatable member and the support block, and a wheeled support assembly attached to the support block and movable along an upper surfaces of the base and extension members (26, 28, 30) extending outwardly from the base.