a pair of diagonal struction is that the operator sees the size and posi- grooves connect each vertical groove with the pos- tion of the image to be photographed up to the time terior air space. In the engraving the face of the In the stile is a centrally-disposed groove, which is to of exposure.… … A COLLAPSIBLE ASH-PAN. IMPROVED CONCRETE BUILDING BLOCK. A COLLAPSIBLE ASH-PAN AND HOPPER. The removal of ashes from a stove or furnace is a most annoying detail of household work. The ash-pan are formed in certain of the blocks. Oil-soaked wooden such fine optical quality that ordinary cameras…
Eclipse · Arc · Machine · Motor · Patents · Scientific American · Feet · American supplement · Wireless telegraph · American december · Fiscal year · Total eclipse · Direct current · Patent office · Curtain shutter · Proper position
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