Tube-brush.
(Steam.) A wire brush for cleaning fire-tubes (flues) of steamboilers. Stillwell's tube-brush, patented March 20, 1864, has a screw-shank at one end and an eye at the other, so that it may be operated by pulling and pushing from the respective ends of the tubes. The wires are flat on the ends, so as to act as cutters, and are soldered to the shaft, which consists of a twisted rod between whose strands the wires are held. The bottle-brush has a similar construction, with bristles instead of wires.
Well-tube clamp. |