FOREST TKR MIXOLOGY H 



Carriage offset. See Carriage reeeder. 



Carriage reeeder. A device on the underside of a sawmill carriage which, on the 

 gig back of the carriage, automatically shunts the carriage frame on its axles 

 about five-eights inch away from the saw line. The carriage reeeder is em- 

 ployed only in band sawmills and its use prevents the log tearing the band 

 saw from the wheels. (Gen.) 

 Syn.: carriage offset. 



Carriage rider. See Dogger. 



Carriage trailer. An extension section of a log carriage which may be attached 

 or detached at will. The carriage trailer permits the sawing of long logs on a 

 comparative^ short cai'riage. (Gen.) 



Case harden. In seasoning lumber, a piece is said to be case hardened when the 

 exterior becomes very dry while the interior remains moist. This is usually 

 due to the application of a high degree of heat in a short time. (Gen.) 



Casing, n. A form of interior trim used for window and door cases. (Gen.) 



Catamaran, n. A small raft carrying a windlass and grapple, used to recover 

 sunken logs. (Gen.) 



Syn.: sinker boat (Gen.), gunboat, monitor, pontoon (P. C. F.). 



Catch 'boom. A boom fastened across a stream to catch and hold floating logs. 

 (Gen.) 



Syn.: trap boom. 



Catch mark. See Bark mark. 



Caterpillar. See Log hauler. 



Catface, n. A partly healed-over fire scar on the stem of a tree. (Gen.) 



Catpiece, n. A small stick, in which holes are made at regular intervals, placed 

 on the top of uprights firmly set in floating booms. The uprights are fitted to 

 enter the holes in the catpiece so as to narrow or widen the space between the 

 booms at the entrance to a sluiceway or sorting jack. The catpiece is held 

 bv the uprights high enough above water to allow logs to float freelv under it. 

 (N. W.,L. S.) 



Cattle car. See Camp car. 



Cattyman, n. An expert river driver. (N. F.) See Eiver rat. 



Coiling, n. A pattern of lumber, usually finished on one side only, which is used 

 for wainscoting, ceiling, and like purposes. (Gen.) 



Center head. (C. B.) A partition or ceiling strip that has a bead pattern run- 

 ning lengthwise through the center. (Gen.) 



Center jam. A jam which is formed on an obstacle in the middle of a stream 

 and does not reacli either shore. (Gen.) 

 Syn.: stream jam. 



Center-sawed. Sec Quarter-sawed. 



Chainer. Sec Sled tender. 



Chain grapples. See Grapples. 



Chain sorter. One who pulls lumber from the sorting table of a sawmill and 

 piles it on trucks or other vehicles for transportation to the dry kilns or 

 drying yards. (Gen.) 

 Syn.: sorter. 



Chain tender. Sec Sled tender. 



Chamber, «. See Throat. 



Chamber, v. See Gum. 



Chambering machine. Sec Gunimer. 



Chance, )i. 1. A term used to define tlio ease or difliculty with which a ]>:irticu- 

 l;ir logging operation or part nf an operation can bo conducted. A good 

 "chance" is one where conditions are favoral)le for easy logging. (N. F.) 

 Syn.: show. (P. C. F.) 

 2. A logging nnit. (Gen.) 



