a frame of wood or iron bars connecting is a ratchet wheel, and on the like end of the bar- the plow to the front of a locomotive, or the front of a The load to which a roof is exposed is of two kinds; rel is another ratchet wheel; the teeth of these traction engine or wheeled vehicle when common… … equal weights at the apex and the purline the direction of motion of this ratchet and WACKERMAN'S IMPROVED SNOW PLOW. point, but half only at the foot of rafter. In the arrangement of its teeth, the ratchet will short, at the apex and purline point the loads slip over the teeth on the jaw, and fail…
Patented · Patents · Shaft · Ratchet · Wire · Scientific American · Munn · Steam engine · Shore wire · Noon august · Shovel plate · Horse power · Fig trees · Address munn · Electric lighting · Postal order
Internet Archive · Public domain (published before 1931). Free to use for anything.
