Fabric-cutting machine

Claim 1

A fabric-cutting machine comprising a cutting blade, a housing, a compressed air motor in the housing and coupled to said blade to drive the same, a cap on said housing, air supply means extending through said cap and connected to said housing for supplying compressed air thereto to operate said compressed air motor, said motor including a rotor housing disposed in the first said housing and defining therewith a first annular gap for receiving discharge air from the motor, said housing comprising a forward connection bushing coupled with said cutting blade, a central bushing joined to said forward bushing, said first annular gap extending through said forward and central bushings, an end bushing secured to the second bushing, said cap being mounted on said end bushing, said end bushing having a second annular gap in communication with the first gap for continued flow of the discharge air, said cap being hollow and in communication with said second annular gap for receiving the discharged air, a flexible hose on said cap and communicating with the interior thereof for conducting the discharged air away from said housing, and a valve in said end bushing for controlling the supply of compressed air to said motor, said air supply means comprising a stud in said end bushing and having an inlet bore leading to said valve, and a second flexible hose attached to said stud and coaxially mounted within the first flexible hose, said end cap and stud including respective beaded necks which are engaged by respective hoses, said annular gaps defining a path of travel for the discharged air which is opposite the direction of flow of the air supplied to said housing, said discharged and supplied air flowing in opposite directions in said hoses.