t is merely conjec- has a vertical brake-up lever, S, at one end, their up and down adjustment. It is also calculated to advance. tural. better, as may be well known, than those ar- Every number of the SCIENTIFIC AMERICAN and a projection or cam at its center. The —————cxcxcuq@o8+¢87-e——_— contains…
Internet Archive · Public domain (published before 1931). Free to use for anything.
