500 AUXILIARY FOREST INDUSTRIK 



advances through a space equal to the thickness of the 



ion at each up-stroke. The cutting part of the machine 



jhs 6 tons. The butts cut are as long as the cutting-blade, 



and are steamed previously, the wood being chiefly softwoods, 



such as poplar or alder. This process yields 30 or 40 sheets 



to the inch, while sawing veneers yields only about 12 sheets. 



The pieces when cut are pressed dry by hot rollers ; then 



they are replaced consecutively so as to reproduce the form of 



the butt from which they were cut, when they are fastened 



her and kept ready for use. 



This machine is driven by 20 horse-power and cuts in a 

 minute 20 pieces, 3 meters long and of any thickness up to 

 2 c. It can cut 30,000 square feet of boards in a day.* Tr.] 



2. Planmg-Machine*. 



llaning-machines consist of rapidly rotating, narrow 7 , steel 

 cylinders up to a meter in length on which several removable 

 blades of the same length as the cylinder are fixed and they 

 plane the pieces of wood that are pushed forward under the 

 cylinder. I'lnnes of this kind are now constructed, either to 

 plane smoothly, or to cut mouldings in the wood. There are 

 ;il~o phtning-rnachines that plane four sides of a piece of wood 

 ace, In this way wood is prepared for door and window 

 frames, for parquets, for picture-frames, etc., and such pieces 

 an: seni ively into the market by forest-owners in 



Sweden. 



3. Wood-turning M whines. 



Wood-turning machines of various patterns are used to cut 

 curves in wood, as in the legs of chairs, etc. The cutter 

 the form of a spindle with spiral or angular blades. 



4. Wood-wool Machines. 



These are planing-machines in which the plane is fixed and 



< < ' <>f coniferous, poplar or limewood is pushed against 



it, or the piano moves over the wood that is fixed. The 



culling e<l</e is movable and of various dimensions, so that 



pieces ol wood run be cut of different six< 



* P.oppc. iijt. i-it. 



