e object being to prevent leakage and guard against the beams the uprights, D, are secured, passing gineers of these ships testify that they are extremely the evils resulting trom expansion and contraction of through mortises in the main frame. These uprights useful and have given great… … have been illustrated and described in its columns. It also contains a WEEKLY OFFICIAL LIST OF ALL THE PATENT CLAIMS, @ feature of short notice, and the invention was patented through The common thimbles used for this purpose are of | great value to all Inventors and Patentees. In the MECHANICAL…
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