Abstract: A device for forming a groove in a cover, the device including a circular score anvil having a first axis and being rotatable in a first direction and a circular scoring knife having a second axis positioned parallel to the first axis and arranged radially opposite the circular score anvil to define a gap between the score anvil and the scoring knife. The scoring knife is rotatable in a second direction opposite to the first direction and comprises a scoring element having an edge region that is tapered to form a ridge toward a periphery of the element. The edge region includes an intermediate space that divides the edge region into two spaced apart knife edges. A groove is formed in the cover while moving through the gap by operative cooperation of the scoring knife and score anvil.

Abstract: A device for forming a groove in a cover, the device including a circular score anvil having a first axis and being rotatable in a first direction and a circular scoring knife having a second axis positioned parallel to the first axis and arranged radially opposite the circular score anvil to define a gap between the score anvil and the scoring knife. The scoring knife is rotatable in a second direction opposite to the first direction and comprises a scoring element having an edge region that is tapered to form a ridge toward a periphery of the element. The edge region includes an intermediate space that divides the edge region into two spaced apart knife edges. A groove is formed in the cover while moving through the gap by operative cooperation of the scoring knife and score anvil.

Abstract: With an apparatus for the processing by milling of the overhanging spine (14) region of a book block (9), which is clamped into at least one clamping device (4) on a conveying arrangement (5) with the side to be processed pointing in downward direction, the book block (9) is moved along the conveying path past a rotary-driven processing tool (16) of a stationary processing station (6). The at least one clamping device (4) is attached to a rotating frame (3) that rotates around a perpendicular axis of rotation (2), wherein the clamping device is provided with an immovable clamping jaw (7) as well as an opposite-arranged movable clamping jaw (8) for opening and closing the clamping device (4).

Abstract: A device for forming a groove in a cover, the device including a circular score anvil having a first axis and being rotatable in a first direction and a circular scoring knife having a second axis positioned parallel to the first axis and arranged radially opposite the circular score anvil to define a gap between the score anvil and the scoring knife. The scoring knife is rotatable in a second direction opposite to the first direction and comprises a scoring element having an edge region that is tapered to form a ridge toward a periphery of the element. The edge region includes an intermediate space that divides the edge region into two spaced apart knife edges. A groove is formed in the cover while moving through the gap by operative cooperation of the scoring knife and score anvil.

Abstract: A hand held device providing effective illumination of a site being worked on has a metal tube serving as a handle, at one end of which a switch is threaded therein, and at the other end of which a window is secured. Located within the handle are a battery, which communicates with the switch by means of a spring, and a light bulb, which faces the window. Interchangeable implements, including tools and instruments, are individually releasably secured within an orifice in the window. The switch operates simply, facilely, and positively, with no parts which will wear out.