. Biltmore lectures on sylviculture . n the soft woods. The chip breaker is merely a front pressure bar preventing longsplinters from being torn off. Price of single planers is $100 to $400; of double planers $400to $800. No machine should have wood in its construction. Flooring. The flooring machine is a surfacer having an additional outfitof two side cutters revolving on ratchet spindles, cuttingtongues and grooves. The machines weigh 5 tons and more. The usual flooring made is hard maple. Planers and flooring machines must be provided with a foldinghood connected with an exhaust fan, so as
. Biltmore lectures on sylviculture . n the soft woods. The chip breaker is merely a front pressure bar preventing longsplinters from being torn off. Price of single planers is $100 to $400; of double planers $400to $800. No machine should have wood in its construction. Flooring. The flooring machine is a surfacer having an additional outfitof two side cutters revolving on ratchet spindles, cuttingtongues and grooves. The machines weigh 5 tons and more. The usual flooring made is hard maple. Planers and flooring machines must be provided with a foldinghood connected with an exhaust fan, so as to prevent the shav-ings from clogging up the machinery or from pressing them-selves into the planed surface. Resawing. Resaws are either circular or band resaws. The use of a resaw involves a great saving, since it takes a veryfine kerf and at the same time relieves the work of the main The feed is automatic and consists of four resaws have as low as 19 gauge at the rim and are fre-quently built as segment saws. j / /. 8o FOREST UTILIZATION I). Ripping. The rip saw is a circular saw running on a bench and a gauge arrangement, to cut any desired width of board or strips. It is usually hand power fed gang rip saw is merely an edger. E. Cut off saws. Cut off saws are either swing saws, jump saws, stationary sawswith carriage moved by hand or automatically, or travelingrailway cut off saws when the saw is moved horizontallyagainst the F. Sand papering. I. Belt sand papering, for carriage spokes, axe handles,buggy poles Disc sand papering, notably for hoxes. III. Spindle sand papering, for small tool handles. IV. Cylinder drum sand papering. The object to be sand papered is always fed onto the ma-chine by hand. G. Scraping. Under scraping is understood the removal of an extremely thin (not over 1/64 inch) layer of tissue from a planed surface. It is meant to replace and to cheapen the process of sand papering, and is not intended to
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