Abstract: The wind shield includes a roof section, two wall members placed at an angle to each other and that undergo a transition into two parallel wall members. The wind shield is open on the side opposite to the wall members positioned at an angle, and has an unbroken bottom except for an indentation extending inwards from the rear, open side of the wind shield. A board extends vertically upwards from the bottom, a wall component at the lower part of the open side is fixed at the board in a jointed manner to a first of the parallel wall members and the free end of the wall component may be attached to the board at the second parallel wall member, a tongue, parallel to the bottom, protrudes from the wall component and covers the indentation when the wall component is in its retracted condition relative to the wind shield.

Abstract: The wind shield includes a roof section, two wall members placed at an angle to each other and that undergo a transition into two parallel wall members. The wind shield is open on the side opposite to the wall members positioned at an angle, and has an unbroken bottom except for an indentation extending inwards from the rear, open side of the wind shield. A board extends vertically upwards from the bottom, a wall component at the lower part of the open side is fixed at the board in a jointed manner to a first of the parallel wall members and the free end of the wall component may be attached to the board at the second parallel wall member, a tongue, parallel to the bottom, protrudes from the wall component and covers the indentation when the wall component is in its retracted condition relative to the wind shield.

Abstract: A thread meter comprising a holder for a thread reel, a counter provided with a rotary measuring wheel and guides for a thread, and an outer casing for enclosing said details. The invention is characterized in that a first guide (19) for a thread (20) is located between said holder (13) and said measuring wheel (16), that a second guide (26) for the thread is formed by said casing (4,6), which consists of a first portion (4) and a second portion (6), which are hingedly interconnected, that in the first portion (4) a recess (26) extends from an edge (27) of the wall of the first portion (4), and the second portion (6) of the casing is arranged to bridge the opening (28) of the recess (26) along said edge (27), so that a hole with closed periphery is formed, and that said wheel (16) is located along a line extending between said guides (19', 26, 30').

Abstract: An extractor for an increment borer, which consists of a tubular body having internally a cylindric portion, which at its forward end 3 transforms to a conic portion 6, and which borer on its outer surface is provided with bore threads. The extractor 2 comprises a cylindric tube, the outer diameter of which corresponds to the inner diameter of the increment borer 1, and the inner diameter of which corresponds to the smallest diameter of the increment borer 1 at the forward end 3 thereof. An indent 11, preferably a V-shaped indent, or a slit is located in the wall of the forward end 9 of the extractor 2, so that said forward end 9 is deformed plastically when this end is pressed against the said conic portion 6 of the increment borer 1.

Abstract: An extractor for an increment borer (1), which increment borer (1) consists of a tubular body having internally a cylindric portion, which transforms to a conic portion (6), and which on the outside is provided with bore threads (4). According to the invention, an end piece (10) is provided for being attached to and detached from the rearward end of the blade (9). The end piece comprises a sleeve (12) and a domed nut (14), each of which are provided with threads (13,15) arranged so, that the sleeve (12) and domed nut (14) are axially movable relative to another. The end piece (10) further comprises an oblong conic locking pin (16) intended to be inserted together with the rearward end of the blade (9) into an axial through hole in the sleeve (12). The domed nut (14) is intended at its threading on the sleeve (12) to axially move the locking pin (16), which thereby is pressed against the blade (9) located between the locking pin (16) and the wall of said hole of the sleeve (12).