Abstract: A device is designed for optionally connecting a crank (3) and a motor shaft with a drill rod (2) of a tool for drilling holes through thick outdoor ice, on lakes and the like, by rotating the drill rod, for converting the tool between a tool for hand driven and a tool for motor driven drilling. The device has for this sake locking members for locking the crank and the motor shaft, respectively, to the drill rod, which are releasably arranged for removing the crank and the motor shaft, respectively, from the drill rod.

Abstract: A knife intended for cutting in food, especially meat, such as for slaughtering or cutting into pieces, has a knife blade (8) of steel provided with an edge and a handle (11) receiving the rod (10) thereof. The handle bears, at least in the region (12) adjoining to the part (9) of the blade provided with the edge, surrounding and against the rod (10) of the blade through a first material able to adhere intimately to the steel of the blade and thereby tightening connection.

Abstract: A tool for drilling holes through ice has a central drill rod (2) having a spiral (5) for lifting crushed ice formed by the drilling, a carrier (6) attached to one end of the drill rod (2) and being fixed to at least one cutting blade (12) extending substantially radially with respect the drill rod (2) and having a cutting edge (13) for cutting and thereby drilling into the ice upon rotation of the drill rod (2). A member is fixed with respect to the carrier (6) for support on the ice through a surface (15) at a distance in the direction of the axis of the drill rod (2) in the drilling direction behind the cutting edge of the cutting blade (12) for defining the cutting depth when drilling by the tool.