| 摘要 |
A HANDY INVERTED JIGSAW MOUNT COMPRISING A RECTANGULAR OPEN FRAME (1) OF HANDY SIZE (ABOUT L470MM X W315MM X H250MM) INTO WHICH A JIGSAW (1) IS INVERTEDLY MOUNTED, WITH EXTENSION-ARMS (20) ATTACHED ON BOTH SIDES AND THE FAR SIDE, AND BASE-EXTENSION (15) AT THE BOTTOM EDGES. THE JIGSAW (1) IS MOUNTED BETWEEN AN UPPER CENTRAL PLATE (5), ONTO WHICH THE BOTTOM-PLATE (IV) OF THE JIGSAW IS ATTACHED, AND A BOTTOM CUSHION (2) SUPPORTED BY A BOTTOM BEAM (3). THE UPPER CENTRAL PLATE (5) IS PERPENDICULARLY AND CENTRALLY ATTACHED ON TOP OF THE FRAME (1), WITH A SMALL OPENING (6) FOR THE JIGSAW-BLADE (III) TO PROTRUDE; TWO SIMILAR SIDE-PLATES (5A & 5B) ARE ATTACHED PARALLEL TO IT ON BOTH SIDES. THE BOTTOM BEAM (3) IS POSITIONED HORIZONTALLY ACROSS AND BELOW THE JIGSAW-HANDLE (II) AT A PIVOTAL-POINT (4) WHERE THE BOTTOM CUSHION (2) CAN BE PUSHED UPWARD BY TIGHTENING SCREWS THROUGH THE SAID BEAM (3) AGAINST THE JIGSAW-HANDLE (II), AND IS ADJUSTIBLE BACKWARD OR FORWARD BY MEANS OF LONGISH SCREW-SLOTS (19) ON BOTH ENDS. (FIG.1)
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