in operation, to be secured. The saw has a direct action from the two crank shafts, A. It is extremely simple in construction, as will appear from upon metal by engraving, with, it is claimed, greater facility the description below. The parts are so proportioned as to without the use o!: a spring… … rod, I, the belt J, being employed graver, B, but diminished in ex- SPENCER'S ENtfBAVDSG MACHINE. tent according as the pivots, I simply to carry the upper shaft secure durability, the shafts being of ample size, and running j over the dead center, and K, and F and D, with their corresponding…
Patents · Iron · Consists · Assignor · Scientific American · Inventor · Best design · Wrought iron · Patent office · Steam boiler · Iron bolts · Mineral matter · Antedated july · Dated july · Weather clear
Internet Archive · Public domain (published before 1931). Free to use for anything.
![An illustration from Eighty Years' Progress of the United States: a family record of American industry, energy and enterprise ... By eminent literary men [C. L. Flint and others] ... Embellished with ... engravings, etc (1868)](https://img.insideoutlibrary.com/img/200/bl-bl_003734531_1-451-2.webp)
