GB605333A - Improvements in tool holders for use in the honing or sharpening of hand tools - Google Patents

Abstract

605,333. Sharpening plane-irons and other hand tools. NEWCOMBE, L. A., and BLOOD, P. July 27, 1945, No. 19317. [Class 60] A tool holder for use in the sharpening of hand tools, especially wood-working hand tools, of the kind comprising a rigid steady or support member having means for clamping the tool and roller or other anti-friction bearing means to run on a fixed or control surface during the movement of the tool in the sharpening process whereby the angle at which the tool is presented to an abrasive sharpening surface is maintained constant throughout such movement at the correct predetermined value, the steady or support member being located within the angle between the tool and the control surface, is characterised in that the steady or support member is of a length such that, when the tool. clamped thereto is presented to the abrasive surface at the predetermined angle, the roller or like anti-friction means makes contact with the said abrasive surface and runs thereon during the movement of the tool. The member 1, Figs. 1, 2, carries at its lower end a roller 2 and has an upper seating surface 4 at an angle complementary to the desired angle and having a rib 13 which projects through the slot in a plane-iron and engages a groove in the bevelled under face 7 of a cap member 6 which is clamped on to the plane-iron by a nut 9. In use, Fig. 3, the holder is adjusted so as to be vertical. In a modification, Fig. 6, the holder is at rightangles to the plane-iron 12 and has pivoted thereto a gauge strip 19 for correct positioning of the edge to be sharpened relative to the holder. Such a gauge strip may be applied to the form of Figs. 1, 2 and 3.