TOO] ( 146 ) 



of corrosive sublimate ; in the Burnettizing process the 

 tendency to decay is destroyed by subjecting the wood to the 

 action of chloride of zinc ; in the Powellizing process the 

 timber is placed in a tank, covered with a patent solution 

 mainly of sugar, which is boiled and cooled, after which the 

 timber is dried ; in the Boucherie process a solution of 

 sulphate of copper in water is introduced into the tree by 

 means of a crosscut, and expelling the sap tubes takes their 

 place. Various preparations are also used either as a paint 

 or for immersion, the best known being Carbolieum, Petro- 

 lineum, Solignum, Jodelite, Smearoleum, Microleum, Sidero- 

 leum, etc. 



Timber Sword. A flexible steel sword-shaped instrument, with 

 handle and slot at the point, in which to place a tape or line 

 in order to draw it under trees or logs of timber for measuring 

 purposes. 



Time Charter. A form of charter party, under which a vessel is 

 fixed for a stated length of time. Owners usually supply crew 

 and provisions and charterers pay port charges and supply 

 coal. Other varying special conditions are made. 



Tire. That part of a band saw blade, extending an inch or so 

 back from the throats, which has not been stretched to con- 

 form to the segment to which the balance of the blade is 

 tensioned. This leaves the saw lighter at the tire than it is 

 in the middle. The width of the tire varies with the width 

 of the saw blade and the amount of tension carried. 



Ton. A ton of shipping is 42 cubic ft. 



Forty cubic ft. of square or 50 cubic ft. of round oak, ash, 

 elm or beech timber, and 50 cubic ft. of fir, or deal, poplar or 

 birch, not cut into scantlings, and 60 cubic ft. of light goods, 

 is deemed and estimated as 1 ton. 



Tongue (as in "tongue and groove'''). (1) A projection on the 

 edge of a board which fits into a groove. (2) The name given 

 to the ornament in the Echinus moulding which alternates 

 with the egg-shaped figure ; hence the name Egg and Tongue 

 moulding. See " Groove." 



Tonguing and Grooving Machines. Machines used for tonguing 

 and grooving boards, staves, etc., sometimes provided with 

 automatic feed and at others with hand-feed only. 



Toothing and Toothing-plane. (1) In architecture, bricks or 

 stones left projecting at the end of walls, that they may be 

 bonded into later extensions. (2) A plane, the iron of which 

 is finely " V " fluted, fixed but slightly inclined in the wood- 

 stock, and offering a number of points projecting beyond the 

 plane-face. Its use is to " tooth " the ground for veneering 



