the same manner that the oars of a boat are pulled. Messrs. Henry J. Mark and "William P. Martinek, of St. The shaft of the wheel, B, carries a crank or eccentric wliich by Messrs. Madden & Sullivan, P. O. box 283, Asbury operates the slide valve, and it is driven by the engagement Park, N. J.,who… … back to the steel body at opposite ends, is brought into use. of the scraper, and in These wheels are ca- providing the latter pable of engaging with with a single longitu- wm» nillNI[liUl!lllllil :i'lii.!!!. dinal steel wearing the wheels, A B, as shown in the detail ^i-i piece or shoe, which is ~…
Patented · Patents · Caoutchouc · Caisson · Scientific American · Conch · Wrought iron · Wood working · Trade catalogs · Oil tanks · Machine shop · Air chamber · Patent issued · Rock drill · Twenty years
Internet Archive · Public domain (published before 1931). Free to use for anything.
![An illustration from Catalogue of the international exhibition of contemporary medals. March, 1910 [electronic resource] (1911)](https://img.insideoutlibrary.com/img/200/ia-bml-NK6310_Am3-31-15.webp)
