contain mains con- larity of speed, simplicity of mechanism, durability and stantly charged, and upon which hydrants for fire purposes freedom from derangement, power with a given size of cyl- We illustrate herewith a new grinding machine for grind- could at once be fixed, in each district of the… … way Frog, which, in its normal position, keeps the main Fig. 3 shows a combined vertical engine and boiler which AUTOMATIC KNIFE GRINDER. line open, but yields sufficiently to the side pressure of the may be properly considered semi-portable. This form is knives used by belt makers, curriers,…
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