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Electrolytic Cell

Description: Patent for an electrolytic cell. "This invention relates to electrolytic cells especially adapted and intended for the electrolyzing of the sulfates of the alkalies to obtain sulfuric acid and alkaline hydrates" (lines 10-13). Illustration included.
Date: October 31, 1905
Creator: Anderson, Henry S.
Item Type: Refine your search to only Patent

Gathering-Machine.

Description: Patent for a gathering machine for boll weevils and other pests in the cotton fields, which collects the insects of of the plants and throws them in the middle of the furrow to expose them to direct sunlight.
Date: August 31, 1909
Creator: Barnes, Ferdinand S.
Item Type: Refine your search to only Patent

Photographic-Printing Frame.

Description: Patent for a new Photographic-printing frame. The "invention relates to certain improvements in photographic-printing frames, and has for its object to construct a frame of such character as to readily permit of the raising of the glass negative from its printing position for the inspection of the sensitized paper and to return the same accurately to printing position." (Lines 8-15) Illustration is included.
Date: December 31, 1901
Creator: Callaway, Alonzo N.
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Saw.

Description: Patent for a saw with a blade that can efficiently cut through wood and metal materials. Illustration included.
Date: July 31, 1900
Creator: Caruthers, John I.
Item Type: Refine your search to only Patent
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