Machine tool
AssigneeMefina S.A.
InventorFrancis Plomb
Life of this patent
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Abstract
The machine tool comprises a frame (1, 2, 3) with two fixing elements (22 and 39) for fastening a scroll saw blade. The fixing element (22) is driven by an electrical motor (5) in a vertical reciprocating movement. The two fixing elements (22 and 39) are linked to each other by a metallic ribbon (45) passing on pulleys (46 to 50). The position of the pulley (47) can be changed by means of a cam (53) acting on an arm (52) so as to stretch the ribbon (45) to the desired value.
Claims9
Machine tool comprising a hollow frame having a lateral upright, said upright linking a horizontal upper arm to a horizontal lower arm, one of said arms having a free end provided with a fixing element for fastening one end of a scroll saw blade and imparting to said blade a longitudinal reciprocating movement, said element being driven in reciprocating movement by a motor housed in said frame, said fixing element being linked to another fixing element in the other of said arms by flexible tie means, said means passing on feed pulleys and imparting the movements of said fixing element driven by the motor to said another fixing element, in order to provide said another fixing element with a force for return of said saw blade, wherein said flexible tie means passes on a stretcher displaceable by an elastic return device effective to bring into a retracted position, whenever said saw blade is removed, said another of said fixing elements which is not driven by said motor, wherein said another fixing element is pivotable about an axis transverse to the axis of the blade to a storage position on said machine.
Dependencies are inferred from the claim text.