Tool to stopper and abrade concave and convex surfaces

Tool for stoppering and abrasion of concave and convex surfaces characterized in that it consists of:

• a usually rectangular supporting base plate (1) in elastic deformable material, the short sides of which are deemed to be the transverse legs and the longer sides are deemed to be the longitudinal legs of the rectangle,
• two upwards slanting interconnecting elements (2) in plates having a low deformability index, their lower ends being rigidly secured to the transverse ends of the supporting base (1);
• two rotating cross journals (6) each fixed to the upper end of the interconnecting elements (2), each journal (6) featuring at both ends threaded holes (9') as well as a s respectively right and left-handed threaded through-hole (3',4') drilled in the center of the journal (6),
• a screw (3,4,), half of which is left-threaded (3) and the other half is right-threaded (4) separated by a small control wheel (5) so that the threads (3,4) are meshing with corresponding central threads of the respective through-hole (3', 4') of the two cross journals (6),
• a guide (8) bearing the handgrip (10) usually having an upside-down U-shape, featuring a central hole (11) through which the control wheel (5) protrudes and lateral slots (12) through which to fit the screws (9) into the borings in the cross journals (6), thus blocking these journals (6) to the supporting guide (8).