FOREST TERMINOLOGY 53 



Scratch grade. A logging railroad grade on which only light work has been 



done. (P. C. F., S. F.) 

 Screw rollers. Live rollers, with a coarse thread on the surface, which shunt the 



piece of lumber or slab to one side so that it will leave the roll. (Gen.) 

 Syn.: worm roller. 

 Seam. See Check. 



Season, r. To dry lumber, either in the open or in a dry kiln. (Gen.) 

 Season check. See Check. 

 Season checks. Cracks which appear on the exterior faces of lumber during the 



seasoning process. (Gen.) 

 Season's cut. The output of a sawmill plant for that portion of the year the 



mill is operated. (Gen.) 



Second faller. The subordinate in a crew of two f allers. (P. C. F.) See Head 

 faller. 



Syn.: faUer, helper. (N.F.) 



Second loader. See Head loader. 



Section, ii. A portion of a log raft, separated by swifters, usually containing 

 two tiers of logs. (P. C. F.) 



Select structural (Sel. struc). The name of a specific grade of southern yellow- 

 pine timbers. (Gen.) 



Self-loading dam. See Rafter dam. 



Self-loading skidder. See Bummer. 



Sender. See Ground loader. 



Send-in man. One who has charge of securing and sending to the planing mill 



such lumber as is called for by the shipping clerk. (Gen.) 

 Send-up man. See Ground loader. 

 Send up, to. In loading:, tn raise logs up skids with cant hooksi or by steam or 



horse power, (Gen.) 

 Set back. See Pokelogan. 

 Set beam. A shaft on a sawmill carriage, directly connected with the set works, 



licaring pinions one of which meshes into a rack in each headblock and moves 



the knees forward and backward as desired. (Gen.) 

 Set gauge. A tool used by a. cross-cut saw filer to regulate the amount of set 



given to each tooth. (Gen.) 

 8yn.: spider. 

 Setter, n. See Block setter. 



Setting, II. (lium.) The temporary station of a portable sawmill. (Gen.) 

 Syn.: ])ortablo mill setting, set-up. 

 (Log.) The temporary station of a yarding engine, or other machine used 



in logging. (Gen.) 

 Syn.: set-uy). 

 Setting block. A small steel block on which the tooth of a cross-cut saw ia 



placed and then struck with a hammer to give it the proper set. (Gen.) 

 Set-up, n. See Setting. 

 Set works. Tlio mocliauisiii on a sawmill carriage by means of which the block 



setter a<Ivaiu(>s the kiicrs and the log toward the saw line after a piece hag 

 . been cut from the log. (Gen.) 

 Set works scale. .\ disc on a saw carriage which shows the distance in inches 



between the saw lino and the face of the knees. (Gen.) 

 Syn.: dial, gauge 

 Shackle. See Yoke. 

 Shade streak. (Ttup.) A stn-ak so (•iii|>|M'il that it sliades tlie newly exposed 



surface from the direct r.iys of the sun. (S. F.) 



