The American House Carpenters' and Joiners' Assistant: Being a New and Easy System of Lines, Founded on Geometrical Principles, for Cutting Every Description of Joints, and for Framing the Most Difficult Roofs; to which is Added a Complete Treatise on Mathematical Instruments. Also, Mensuration, Tables of the Weights and Cohesive Strength of the Several Materials Used in the Construction of Buildings, &cD. Burgess, 1853 - 136 σελίδες |
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Σελίδα 47
... extent , and the joint should be stiff enough to hold them in this position , and not to permit them to deviate from it in consequence of the small amount of pressure which is inseparable from their use . When greater accuracy in the ...
... extent , and the joint should be stiff enough to hold them in this position , and not to permit them to deviate from it in consequence of the small amount of pressure which is inseparable from their use . When greater accuracy in the ...
Σελίδα 52
... extent of the edges , then they are all three good . To draw a straight line between two points upon a plane , we lay a rule so that the straight edge thereof may just pass by the two points ; then , moving a fine pointed needle , or ...
... extent of the edges , then they are all three good . To draw a straight line between two points upon a plane , we lay a rule so that the straight edge thereof may just pass by the two points ; then , moving a fine pointed needle , or ...
Σελίδα 53
... extent of equal divi- sions , which are numbered 1 , 2 , 3 , & c . , beginning from the second division on the left hand . The first of these primary divisions is subdivided into ten equal parts , and from these last divisions the scale ...
... extent of equal divi- sions , which are numbered 1 , 2 , 3 , & c . , beginning from the second division on the left hand . The first of these primary divisions is subdivided into ten equal parts , and from these last divisions the scale ...
Σελίδα 54
... extent of a subdivision , or one - hundredth of the extent of a primary division . Fig . 19 represents the two diagonal scales which are usually placed upon the plane scale of six inches in length . In one , the distances between the ...
... extent of a subdivision , or one - hundredth of the extent of a primary division . Fig . 19 represents the two diagonal scales which are usually placed upon the plane scale of six inches in length . In one , the distances between the ...
Σελίδα 55
... extent of the scale . Take off now , with the compasses , eleven of these subdivisions , set the extent off backwards from the end of the first primary division , and it will reach beyond the beginning of this division , or zero point ...
... extent of the scale . Take off now , with the compasses , eleven of these subdivisions , set the extent off backwards from the end of the first primary division , and it will reach beyond the beginning of this division , or zero point ...
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The American House Carpenters' and Joiners' Assistant Lucius D. Gould Περιορισμένη προεπισκόπηση - 2023 |
Συχνά εμφανιζόμενοι όροι και φράσεις
26 Spruce St angle rib beam beam compasses bevel breadth Cast Iron circle circumference colatitude constructed copy cube root cubic feet depth describe the arc diagonal diameter divided draw the lines edge Eighths elevation ellipsis extent will reach Figure floor frame girders given line given number gnomonic projection half hypothenuse inches instrument Invented and Drawn jack-rafters Join joists length in feet limb line of chords line of numbers line of sines Lith 26 Spruce meridian method of finding multiplied nail number of degrees number of equal pencil perpendicular plane Plate polygon primary divisions proportional purlin quadrant quarter girt quotient radius regular polygons represent right angles right line roof rule Rule.-Multiply screw secants sector Shows the method slider sliding soffit square root straight line stroke subdivision tangents thickness transverse distance triangle truss vernier scale weight