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, &c |
From inside the book
Results 1-5 of 9
Page 49
... copy , or the areas of solids presented by its several parts , shall bear any required proportion of the lines , eas ... copy with the lines reduced in the proportions f to 1 , to 1,4 to 1 , & c .; but , if the points D and E be ...
... copy , or the areas of solids presented by its several parts , shall bear any required proportion of the lines , eas ... copy with the lines reduced in the proportions f to 1 , to 1,4 to 1 , & c .; but , if the points D and E be ...
Page 50
... copy occupying 4th the area ; if the line across the slides be set to 5 on ame scale , the distances between the points will be in the ratio of 1 to √5 , he area of the copy pricked off by the points D and E will be the 4th of rea ...
... copy occupying 4th the area ; if the line across the slides be set to 5 on ame scale , the distances between the points will be in the ratio of 1 to √5 , he area of the copy pricked off by the points D and E will be the 4th of rea ...
Page 51
... copy , the third point of e compasses will transfer the new point to the copy . Another form of triangular compasses is represented at Fig . 14 . THE DRAWING - PEN . - This instrument is used for drawing straight lines . It con- ts of ...
... copy , the third point of e compasses will transfer the new point to the copy . Another form of triangular compasses is represented at Fig . 14 . THE DRAWING - PEN . - This instrument is used for drawing straight lines . It con- ts of ...
Page 78
... copy m LINE erally the sec length and th instrum must b To 1 number make the cin verse point throug contain Suppos BCD , Take lay th to D. requin Wh -d point in the copy . In the same manner. eet . proce and f G , an ( = 60 G , dra Fro ...
... copy m LINE erally the sec length and th instrum must b To 1 number make the cin verse point throug contain Suppos BCD , Take lay th to D. requin Wh -d point in the copy . In the same manner. eet . proce and f G , an ( = 60 G , dra Fro ...
Page 79
... copy . In the same manner all the other points of the reduced y may be set off , each one from two points previously laid down . LINE OF CHORDS . The double scales of chords upon the sector are more gen- lly useful than the single line ...
... copy . In the same manner all the other points of the reduced y may be set off , each one from two points previously laid down . LINE OF CHORDS . The double scales of chords upon the sector are more gen- lly useful than the single line ...
Other editions - View all
Common terms and phrases
26 Spruce St ABCD angle rib beam beam compasses bevel breadth Cast Iron circle circumference colatitude compasses copy cube root cubic feet depth describe the arc diagonal diameter divided draw the lines Drawn by L.D. edge Eighths elevation ellipsis extent will reach Figure floor frame Frustum girders given number gnomonic projection half hypothenuse inches Invented and Drawn jack-rafters joists L.D. Gould length in feet limb line of chords line of numbers line of sines Lith 26 Spruce MATHEMATICAL INSTRUMENTS meridian method of finding Multiply nail number of degrees number of equal paper perpendicular plane Plate polygon primary divisions proportional purlin quarter girt radius rafter represent right angles right line roof Rule screw secants Shows the method slider sliding soffit straight line STRENGTH OF MATERIALS stroke subdivision tangents thickness transverse distance triangle truss vernier scale weight