 | Industrial arts - 1818 - 476 pages
...board of oak, which has been formed by cutting across the supposed medullary processes, can's'carcely be made, by any means, to retain the same form and...subjected to various degrees of heat and moisture. 1 had not at that time ascertained, with accuracy, the comparative expansion and contraction of timber,... | |
 | Charles Frederick Partington - Building - 1825 - 342 pages
...proportion in diameter, than it does in circumference ; hence a whole tree always splits in drying. Mr. Knight has shown that, in consequence of this...subjected to various degrees of heat and moisture. From the ash and the beech he cut some thin boards, in different directions relatively to their transverse... | |
 | Thomas Curtis - Aeronautics - 1829 - 856 pages
...proportion, in diameter than it does in circumference ; hence a whole tree always splits in drying. Mr. Knight has shown that, in consequence of this...subjected to various degrees of heat and moisture. From the ash and the beech he cut some thin boards, in different directions relatively to their transverse... | |
 | Thomas Curtis (of Grove house sch, Islington) - 1839 - 854 pages
...proportion, in diameter than it does in circumference ; hence a whole tree always splits in drying. Mr. Knight has shown that, in consequence of this...tree, that can scarcely be made, by any means, to retai'i the same form and position when subjected to various degrees of heat and moisture. From the... | |
 | Arthur Ashpitel - Architecture - 1867 - 442 pages
...proportion, in diameter, than it does in circumference ; hence a whole tree always splits in drying. Mr Knight has shown that, in consequence of this irregular...subjected to various degrees of heat and moisture. From the ash and the beech he cut some thin boards, in different directions relatively to their transverse... | |
 | Royal Society (Great Britain) - Mathematics - 1817 - 476 pages
...stated that a board of oak, which has been formed by cutting across the supposed medullary processes, can scarcely be made, by any means, to retain the...subjected to various degrees of heat and moisture. I had not at that time ascertained, with accuracy, the comparative expansion and contraction of timber,... | |
 | Physics - 1817 - 534 pages
...stated that a board of oak, which has been forn*ifePfcy cutting across the supposed medullary processes, can scarcely be made, by any means, to retain the same form and ., fosftioh when subjected to .various degrees of heat and moisture. had not at that time, ascertained,... | |
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It is well known that wood contracts less in proportion, in diameter than it does in circumference ; hence a whole tree always splits in drying. Mr. Knight has shown that, in consequence of this irregular contraction, a board may be cut from a tree, that... 