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A multi-purpose power tool in which a power head and a power carriage are mounted for reciprocal translation on a pair of elongated tubular ways, the ways being pivotally mounted and counterbalanced with respect to a generally horizontal base or stand such that the power head and carriage may be mov

A multi-purpose power tool in which a power head and a power carriage are mounted for reciprocal translation on a pair of elongated tubular ways, the ways being pivotally mounted and counterbalanced with respect to a generally horizontal base or stand such that the power head and carriage may be moved independently in a horizontal plane or, alternatively, in a vertical plane. The power head and carriage assemblies may be moved in a precise manner relative to the ways, either manually or by means of a variable speed motor drive. Included within the power head is an arbor assembly which passes through a quill member, the arbor also being driven by a variable speed motor. The quill assembly is provided with means for moving same outwardly from the power head to a desired extent and for subsequently locking it in that position. The carriage assembly includes means for supporting and accurately positioning a work holding table. By properly choosing the tool elements to be mounted on the arbor, the multi-purpose power tool can be made to function as a table saw, a disc sander, a vertical drill press, a lathe, a horizontal boring machine, a horizontal or vertical milling machine, a stationary adjustable router or a high speed shaper.

대표청구항 ▼

In a multi-purpose power tool of the type having a power head member with a motor driven tool supporting arbor extending from one edge thereof, said power head member being slidably mounted on tubular ways, a workpiece supporting carriage member slidably mounted on said tubular ways and movable ther

In a multi-purpose power tool of the type having a power head member with a motor driven tool supporting arbor extending from one edge thereof, said power head member being slidably mounted on tubular ways, a workpiece supporting carriage member slidably mounted on said tubular ways and movable therealong toward and away from said one edge of said power head member, the improvement comprising: (a) a stand member having a horizontal surface; (b) pivot means attached to said stand member and secured to one end of said tubular ways to maintain said ways in a parallel and spaced apart relationship to one another and allowing said tubular ways to be rotated between a horizontal and a vertical disposition with respect to said horizontal surface; (c) a torsion spring member operatively coupled to said pivot means and to said stand member for facilitating the movement of said tubular ways between said horizontal and vertical dispositions; (d) a rack gear formed on at least one of said tubular ways; (e) a shaft journaled for rotation within said carriage member and having a pinion gear secured thereto and engagable with said rack gear; (f) an electric motor mounted within said carriage member in driving relationship with said shaft; and (g) manually operable crank means selectively engagable with said shaft for rotating said shaft independently of said motor and moving said carriage member along said ways.