lated to improve the draft ofchimneys and the heating capacity of grate fireplaces, be-sides affording some incidental protection to mantels fromthe action of smoke and heat. Patented through the Scientific American Patent Agency,May 9, 1876. For further information address the inventor,Mr. Isaac… … by compressed air and embodying some novel and interestingmechanical features. Larger drawings than we are here ableto present are necessary to convey a complete idea of its con-struction, but the annexed diagrams will suffice to give ageneral notion of the new points. Fig. 2. nects with the rod,…
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