r with a pinion ona crank Cal., applied a little mathematical calculation to the verifi- shaft, from which motion is communicated through a con- cation of the truth or falsity of the principle of his device, necting rod toa large scrubbing brush. The water is sprinkled he might easily have proved… … the resisting forces when the machine returns from the last to the premone position. hand, renders the work far more easy and cleanly to the The movement will terminate still sooner, if any-percussion operator ; and, as a consequence, the work may proceed with takes place, as the sum of active…
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