Exercises in Wood-working: With a Short Treatise on Wood; Written for Manual Training Classes in Schools and CollegesD. Appleton, 1889 - 158 páginas |
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Página 23
... if it should be resawed into boards of half the thickness , it will require. FIG . 14. - End of oak - log ex- posed to the weather . a , wind - check ; b , shake . FIG . 19. Polypore growing on a living locust -. WARPING . 23.
... if it should be resawed into boards of half the thickness , it will require. FIG . 14. - End of oak - log ex- posed to the weather . a , wind - check ; b , shake . FIG . 19. Polypore growing on a living locust -. WARPING . 23.
Página 43
... polypores , or tree - fungi , the spore sur- faces are tubes whose openings constitute the pores . In Merulius , or tear - fungus , the spore surfaces are shallow cavi- ties . d The toadstool ( Agaricus melleus ) is very destructive to ...
... polypores , or tree - fungi , the spore sur- faces are tubes whose openings constitute the pores . In Merulius , or tear - fungus , the spore surfaces are shallow cavi- ties . d The toadstool ( Agaricus melleus ) is very destructive to ...
Página 44
... is very soft and brittle . When the thin membrane which unites the cells becomes dissolved , then. FIG . 19. Polypore growing on a living locust - tree . FIG . 23. - Mouth - parts of Zopherus Mexicanus. 44 EXERCISES IN WOOD - WORKING .
... is very soft and brittle . When the thin membrane which unites the cells becomes dissolved , then. FIG . 19. Polypore growing on a living locust - tree . FIG . 23. - Mouth - parts of Zopherus Mexicanus. 44 EXERCISES IN WOOD - WORKING .
Página 53
... polypore in a stick that had been charred only one year . Creosote . The protective substance developed in charring seems to be creosote , which is one of the best preservatives we have . The ends of timbers are placed in the creosote ...
... polypore in a stick that had been charred only one year . Creosote . The protective substance developed in charring seems to be creosote , which is one of the best preservatives we have . The ends of timbers are placed in the creosote ...
Página 156
... Polypore , 41 , 43 . Polyporus annosus , 43 . dryadeus , 44 . Rabbet , 88 . Rabbet - plane , 60 . Rail , bottom , 132 , 134 . lock , 134 . meeting , 132 . top , 132 , 134 . Raked teeth of saw , 76 . Rattan , 26 , 32 . Reamer , 60 . Red ...
... Polypore , 41 , 43 . Polyporus annosus , 43 . dryadeus , 44 . Rabbet , 88 . Rabbet - plane , 60 . Rail , bottom , 132 , 134 . lock , 134 . meeting , 132 . top , 132 , 134 . Raked teeth of saw , 76 . Rattan , 26 , 32 . Reamer , 60 . Red ...
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Términos y frases comunes
adjusted angle annual rings balusters bending bevel block boring bottom branches bundles cabinet-work cells cellulose chamfer chisel color cube decay dovetails dowels durable Exercise face face-edge fastened fibers finished flat frame fungi fungus furniture gauge gives glue glued gouge grain groove growth grub hand-screw hard wood heart-wood heavy hinge hold holes inch insects iron joinery joint joists kerf labrum length lignin lines logs lumber mark measures medullary rays mitered molding mortise mortise and tenon mortise-piece mycelium nails oblique paint palm palpus pared pencil pine pins plane Plate Polypore portion position rabbet rip-saw riser sand-paper sap-wood sash screws shape shown in Fig shows side smooth smoothing-plane soft spoke-shave spores square steel square stem straight studs surface teeth tenon thick thin timber tree try-square and knife turpentine varnish veneers vessels vise warp wedge wide wood-cells wood-working
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Página 10 - ... most essential to the wood-worker's success and the good execution of his work, and of directions for the use of his tools and for manipulation. These facts and directions are given in a simple, concise style, intelligible to any pupil of ordinary sense. The book deals particularly with carpentry and joinery, and is divided into two parts. The first part treats of the structure, properties, and kinds of wood ; its manufactures and economic relations to other substances ; parasitic plants and...
Página 7 - ... the mind is to be aided in its development by the action of the eye and hand. " The prime object of all manual training is to aid mental development.
Página 96 - The results showed that approximately even stress distribution in the slab was obtained at a distance from the end equal to the width of the...
Página 23 - As the wood loses its water it shrinks perceptibly, much more in the direction of the annual rings than in the direction of the medullary rays, and very little, if at all, in the direction of the fibers.
Página 3 - The exercises now printed were prepared during iSix for the College of the City of New York. Subsequent teaching suggested many changes and additions, and the results have been used in other schools. Mr.