ent recently pieces are united by a transverse bar. To one side one of the side bars showing the couplings; and Fig. 4 granted to Mr. Francis O. Butterfield, No. 6 Vine St., piece is secured a cylindrical reservoir closed at the top is an inside perspective view of the lower end of one of Lynn,… … BUTTERFIELD’S IMPROVED TUNNEL STRAINER. strainer being so much less than that of the tunnel, and the strainer taking up so little space in the tunnel by a ball valve. Projecting from the side of the upper that ample space is left between the strainer and tun- vided with hooks, by means of which the…
Internet Archive · Public domain (published before 1931). Free to use for anything.
