Abstract: A hand tool for deburring is provided, as well as a cutting blade to be inserted into the tool, the tool comprising a housing, and a rotatable holding device, the holding device being positioned in and being rotatable in the housing and having a chamber for releasably holding a cutting blade, the chamber running obliquely to the axis of rotation (z) of the holding device.

Abstract: A hand tool for deburring is provided, as well as a cutting blade to be inserted into the tool, the tool comprising a housing, and a rotatable holding device, the holding device being positioned in and being rotatable in the housing and having a chamber for releasably holding a cutting blade, the chamber running obliquely to the axis of rotation (z) of the holding device.

Abstract: A deburring tool having an insert having four cutting edges such that the tool will cut in either direction of rotation is disclosed. The insert is pivotably mounted on a handle.

Abstract: The invention is directed to a deburring and scraping tool capable of deburring and scraping grooves machined into relatively inaccessible areas of metal. The tool includes a handle, and a scraping blade which is inserted into the handle. The scraping blade has two or more cutting edges which are formed at an angle to each other. The two or more cutting edges are separated from each other. The unique design enables an operator to simultaneously remove burrs from at least two edges of the groove, or to scrape at least two exposed internal surfaces of the groove.

Abstract: A hand operated countersink has a shaft attached at one end to a cutting insert and at the other end to a handle, wherein said cutting insert is substantially of isosceles triangular shape. The insert has at least two cutting edges each disposed along an equal side of the triangle, one of the cutting edges being operative to cut when the shaft is rotated in one direction, and the other cutting edge being operative to cut when the shaft is rotated in the other direction. In a preferred embodiment, the insert has four cutting edges, two disposed along opposite edges of one equal side of the triangle, and two disposed along opposite edges of the other equal side of the triangle.

Abstract: The invention is directed to a deburring tool capable of deburring cylindrical grooves machined into relatively inaccessible areas of metal. The deburing includes a handle, and a scraping blade which is inserted into the handle. The scraping blade has two or more cutting edges which are formed at an angle to each other. The two or more cutting edges are separated from each other. The unique design enables an operator to simultaneously remove burrs from at least two edges of the groove.

Abstract: The invention relates to fine adjustment means used with instruments which have to be finely aimed in a certain direction. The multi-directional fine adjustment unit comprises two discs held coaxially adjacent to each other by connecting means located along the axes of the discs and tilting means for tilting one disc relative to the other, wherein said tilting means are located in a circumferential annular track between the discs, and wherein said tilting means may assume any position along the track.

Abstract: There are disclosed a blade-holder capable of holding two different deburring blades and a deburring tool utilizing the blade-holder. The blade-holder comprises of a rod, two longitudinal bores, one at each end of the rod and releasable locking means situated in the regions of the longitudinal bores.

Abstract: A handle for swivelling tools, aperture means within the handle for receiving the stock swivelling of the tool, and internal retaining means for retaining said tool within said handle. A preferred embodiment of the invention enables the insertion or removal of the tool only when the tool is rotated relative to the handle in a first direction. When the tool is used for its tool purposes it swivels or rotates in the second direction and accordingly is retained within the handle.