ICAL AND OTHER IMPROVEMENTS. VOLUME 5.] NEW YORK MAY 25, 1850. [NUMBER 36. zinc, ABC. A is fixed ; B has a lateral mo- Scientific American, tion to widen the upper by the screw working IMPROVEMENT IN THE SCREW AND COLLAR FOR CIRCULATION 14,000. in the slot E ; C has an up and down slide PUBLISHED… … This improvement is the invention of Cyrus in length, is now under contract. When this Ijtftr lEbmpk the ball, D, and in the groove, F, as represent- S. Tolman, of Hinsdale, Cheshire Co., N. H., part of the work is ready for use, we shall ed in figure 1. The back part of the slot, G who has taken…
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