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Rotary Tooth-Brush

Description: Patent for a crank powered rotary toothbrush. Designed with the purpose of easily cleaning teeth with a simple automatic mechanism, with added projection via a shield around the brush for protecting gums and cheeks from being scraped by the brush.
Date: October 8, 1918
Creator: Abel, Charles
Item Type: Refine your search to only Patent

BRICK-KILN.

Description: Patent for brick-kilns to "provide means for burning bricks in a much shorter time and more effectively than is possible with usual constructions, and, further, to protect the kiln-walls against the injurious effects of heat" (lines 9-13).
Date: October 30, 1900
Creator: Aber, Edgar
Item Type: Refine your search to only Patent

Ironing Table.

Description: Patent for a new and improved ironing board. This design consists in "the rigid supporting-frame of an ironing-table, a cross-piece secured to the outside of the upper ends of the supports at one end of the frame, so that its upper edge shall project above the supports, an ironing-board top hinged to one side of the cross-piece, and a shelf secured to the upper edge and projecting to the opposite side of said cross-piece" (lines 86-94).
Date: October 19, 1886
Creator: Adair, Annie E.
Item Type: Refine your search to only Patent

Oil-Converting Apparatus.

Description: Patent for an apparatus that can be built at moderate cost, which will enable a high rate of commercially efficient work to reduce "the specific gravity of various grades of hyrdo-carbon oils, especially those of a semi-refined character" (lines 22 - 24).
Date: October 28, 1919
Creator: Adams, Joseph H.
Item Type: Refine your search to only Patent
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