Patent AT-E40070-T1: [Translated] DEVICE AND METHOD FOR MAKING A LAMINATED AND PRESTRESSED WOOD BEAM.

A method of manufacturing a composite, prestressed wooden beam (1, 10, 35, 67, 90) comprising the steps of: positioning a plurality of beam parts (2, 16, 68, 69) in contact with one another at least in one direction transverse of the direction of length, bending the beam parts (2, 16, 68, 69) into the desired shape and interconnecting the beam parts (2, 26, 68, 69). The number of beam parts (2, 16, 68, 69) positioned in mutual contact is bent integrally into the desired shape and retained. Subsequently the connection is performed by passing a great number of smooth, substantially cylindrical pins (6, 21, 61, 70, 72) through the beam parts (2, 16, 68, 69) in a direction transverse of the direction of length and subsequently the resultant composite beam (1, 35, 67, 90) is disengaged. Furthermore the invention relates to a device for manufacturing said composite, prestressed wooden beam (1, 10, 35, 67, 90) comprising a stationary, elongate gauge (11, 31). This device comprises a displaceable drilling device (17, 37) comprising a drill holder (26, 51) having a rotary shaft to be positioned transversely of the direction of length of the gauge (11, 31), a displaceable pressing device (22, 40) having a pressing stroke transverse of the direction of length of the gauge (11, 31) and supporting means (12, 24, 32, 91) for supporting the pressing device (22, 40) with respect to the gauge (11, 31).

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