Abstract:
An air humidifier used for regulating humidity in indoor spaces, such as residential flats, and in which the humidity has been produced by vaporizing water in a vaporizer. The problem in existing air humidifiers is the constant need to add water and the need of other maintenance, such as cleaning. In the air humidifier of the invention, these problems have been solved in the way that the air humidifier is connected to the water mains by means of a pipe. The water flow entering the vaporizer can be controlled with the aid of a valve, and after the water inflow has been stopped by the valve the heat stored in the walls of the vaporizer and in the electric resistance dries the vaporizer, while at the same time burning out the impurities in the vaporizer.
Abstract:
A sawing machine having rollers which laterally guide a log and feed it upon a transporting chain between and under rollers to sawblades of the saw machine, such as circular saws or a band saw. Above the log there in a staying chain which stays the log by means of staying spikes acting on the log's surface. The feed chain below the log carries supporting members which support the log at a plurality of points and maintain its unchanged position relative to the sawblades, and are particularly useful for sawing crooked logs to avoid uneven and unaesthetic saw cuts.
Abstract:
A device for feeding a tree trunk with lateral and vertical centering into a machine processing round timber. Heretofore, the feeding of the log into the machine has taken place manually, which is exceedingly heavy work. The invention comprises a feed gutter and a spring wheel both serving as points of support, at least one feed wheel, and opposite thereof a carrying wheel.
Abstract:
A saw machine with one or more saw blades for ripping a log, after which are provided one or more parting knives. The problem occurring in saw machines of prior art is that the spacing of the fixed guiding points working the log, as viewed in the direction in which the log is being sawn, becomes so large that curve-sawing is no longer possible. The saw machine of the invention is characterized in that both the saw blades (7) and the parting knives (8) are located in a separate sawing unit (6) articulatedly attached to the frame (9) of the saw machine and thereby following the crookedness of the log (11).
Abstract:
Procedure for straightening a circular-saw blade (2), in which procedure the blade (2) is mounted on a shaft (3). The geometry of the blade is measured, the measured values are compared with reference values, deformations in the blade are straightened by means of blade treating elements (10, 11, 12, 13, 14, 15, 16, 23, 24), the blade is tensioned by means of working devices (13, 14), the blade (2) is rotated, lateral forces are applied to the blade (2), the effect of the forces on the blade (2) is measured while the blade is rotating, the measured values are compared with the reference values, and some or all of the operations mentioned above are repeated, if necessary, in a desired order, until the desired rigidity and straightness of the blade (2) have been achieved. The invention also relates to an apparatus for straightening a blade.
Abstract:
The present invention concerns a knife insert (1) for a wood-working machine, said knife insert being intended for mounting on a rotatable knife head, said knife insert having a first cutting edge (2) and a second cutting edge (3), the latter being arranged to cut obliquely to the grain of the wood stock, whereby said knife insert is adapted mountable to said knife head by its heel (4), which is the part of the insert situated closer to the center axis of the knife head than said first cutting edge (2). The first cutting edge (2) and the second cutting edge (3) are located relative to each other so that the second cutting edge (3), which cuts obliquely on the grain of stock, under all conditions hits the surface of the stock to be worked earlier than the first cutting edge (2).
Abstract:
A fastening system for a circular saw blade (1, 10), wherein the circular saw blade is fastened by means of a screw/screws (2, 9) to a fastening flange on the turning arbor (6), to a chipping edger (3) in a hewing saw, or to a chipping cutter (8). The fastening part (5, 11) of the circular saw blade (1, 10) is made frustoconical and the circular saw blade (1, 10) is fastened between two corresponding frustoconical surfaces.
Abstract:
A fastening system for a rip saw blade and chipping edger combination includes at least one rip saw blade provided with holes and at least one chipping edger mounted collinearly and adjacent to the rip saw blade on a turning arbor so that the teeth of the chipping edger is aligned with the holes provided in the rip saw blade. The rip saw blade, the chipping edge and the turning arbor are all held stationary relative to each other by anchoring the same on the turning arbor with a fastening device such as a nut. An intermediate space or recess is provided between the rip saw blade and the chipping edger to permit the rip saw blade to yield in either lateral direction.
Abstract:
A cutter for square timber hewing, which consists of a cutter disk shaped like a truncated cone and on the mantle surface of which have been affixed cutter bits arranged after each other in helical configuration, so that cutting takes place with each cutter bit in its turn, starting at the outer periphery of the cutter cone and proceeding inward. The cutter bit has two cutting edges which lie on each other's extension and define an obtuse angle. One bit edge moves in parallel with the grain of the timber and the other bit edge moves obliquely with reference to the grain of the timber, hewing of the square timber being effected by feeding the trunk in between two opposing cutters or pairs of cutters. The cutter bit has been affixed to the cutter disk by the extension, pointing towards the center of the cutter disk, of the cutter bit's bit edge cutting in the direction of the grain.
Abstract:
A machine for hewing squared timbers from round trunks, with the aid of rotary cutters, before which there is a set of guiding rollers for the trunk to be hewn. The machine comprises two cutter pairs disposed immediately after each other and the axes of which form an angle of 90.degree.. The set of trunk guiding rollers consists of at least one pair of pulling wheels with padded circumference and disposed thereafter a track-resembling pair of pulling roller units, all of which together move in a transverse direction following the thickness of the trunk that is being hewn, parallel, and feeding in a forward direction the trunk that is being hewn.