FOREST TERMINOLOGY 67 



Tank heater. A sheet-iron cylinder extending through a tank or sprinkler, in 

 which a fire is kept to prevent the water in the tank from freezing while icing 

 logging roads in extremely cold weather. (N. F.) 



Tanking. The act of hauling water in a tank, to ice a logging road. (N. F.) 



Taper set lever. A lever attached to the knee of a sawmill carriage head block 

 by means of which any knee may be placed out of alignment. It is of service 

 when making the first cuts on swell-butted logs. (Gen.) 



Tap line. A chartered logging railroad which shares with the trunk line rail- 

 roads in a division of the through lumber rate to market, on products originat- 

 ing at the plant of the owners of the logging railroad. (S. F.) 



T. B. and S. In box shook manufacture, top, bottom and sides. (Gen.) 



Team boss. One who has charge of the skidding teams in a logging operation. 

 (R.F.) 



Syn.: captain. 



Tee, n. A strip of iron about 6 inches long with a hole in the center, to which 

 a short chain is attached; it is passed through a hole in a gate plank, turned 

 crosswise, and so used to hold the plank when tripped in a splash dam. 

 (N. W.) 



Syn.: toggle. (E. M.F.) 



Tension, v. To make a circular or a band saw more loose in the center than on 

 the cutting edge. 

 8vn.: open. 



Thousand legs. See Corkscrew. 



Three-block hold. See Block hold. 



Three-ply veneer. A piece of built-up veneer composed of three pieces glued one 

 to the other. See Laminated wood. 



Three-year old, a. See Pulling. 



Throat, n. On a saw, the rounded cavity in which sawdust accumulates and is 

 carried from the cut. (Gen.) 

 Syn.: chamber, gullet. 



Throw, V. Sec Wedge a tree, to. 



Throw line. See Trip line. 



Throw out. Sen Frog. 



Tide, II. A freshet. In the Appalachian region logs are rolled into a stream 

 and a "tide" awaited to carry them to the boom. (App,) 



Tie chopper. See Tie hacker. 



Tie cutter. Sec Tie hacker. 



Tie hack. See Tie hacker. 



Tie maker. See Tie hacker. 



Tie man, n. At a sawmill plant, one who ties surfaced lumber, lath, or other 

 products into bundles. (Gen.) 

 Sec lath bundler. (Gen.) 



Tier, n. In rafting, the group of jtarallcl logs whicli are stowed in each raft 

 section. (P. C. F.) 



Tight cooperage. Packages, consisting of two round heads and a body composed 

 of numerous staves hold together witli hoops, which are used as containers 

 for lifjuids. (Gen.) 



Tight knot. See Standard knot. 



Timber, n. (Log.) 1. A term which may have any of the following meanings: 

 wood suitable for building houses and ships, and for use in carpentry and 

 joinery; trees cut down and squared or capable of being squared or cut into 

 beams, rafters, boards, etc.; growing trees suitable for constructive purposes; 

 trees generally; wooils or a single piece of wood, whether suitable for use or 

 already in construction; the body, stem, or trunk of a tree. The moaning to 



