ths' forms the subject of a recent patent. The box has experimentation with various tannins in order to ascer- the general form of an ordinary sewing machine cover, tain which is most effective in preventing the incrusta- but its top is cut away to form slots at the ends, open- tion of boilers,… … bottom of the mortise, rubber springs being placed ALEXANDEB'S LOCOMOTIVE ATTACHMENT. BOBEBTSON'S SEWING MACHINE COVEB AND STOOL. upon opposite sides of the tenons. The position of comes. There is a spring-actuated catch for re- ends. The uprights of the part forming the stool top these springs,…
Contained · Patented · Patents · Motors · Scientific American · Large number · Interstitial armatures · Electric light · Express money · Horse power · Potential difference · Sewing machine · Electric power · Glass tube
Internet Archive · Public domain (published before 1931). Free to use for anything.
