A twenty-five-volume, alphabetically-arranged science encyclopedia.Machine. A sewing machine uses a needle and thread, like hand sewing, but it can sew much faster. ... The bottom thread has to be wound onto a small reel ( bobbin) underneath the material and the top thread looped around it to lock the two threads. ... In the 1850s Isaac Singer (founder of the Singer Sewing Machine Co.)anbsp;...
|Title||:||Growing Up with Science|
|Author||:||Michael W. Dempsey|