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Rotary Drilling-Machine

Description: Patent for a rotary drilling machine for drilling oil wells. Illustrations included.
Date: February 18, 1913
Creator: Black, Lee J.
Partner: UNT Libraries Government Documents Department

Oil-Tank.

Description: Patent for an oil tank that is fire proof and will not explode completely if it is struck by lightning.
Date: July 18, 1911
Creator: Price, James Bain
Partner: UNT Libraries Government Documents Department

Gravity Oil-Distributer for Ships.

Description: Patent for a gravity oil-distributors for ships at sea that calms the water during storms. "the objects of [the] invention are to produce a very simple, cheap and buoyant boat or float, that may be compactly stored upon deck, conveniently launched over the side of the vessel, and so manipulated therefrom as to keep a proper and desired relative position in connection therewith, and which will automatically feed oil to the water" (lines 11-18).
Date: September 18, 1894
Creator: Ericson, John
Partner: UNT Libraries Government Documents Department

Saw-Hammering Machine.

Description: Patent for a simple hammering machine for circular saws that "carries the saw in such a way that it may be held at any necessary or desired angle to suit the operator, which has a sliding anvil adapted to be adjusted so as to come opposite the various parts of the saw, which is provided with an adjustable hammer adapted to be brought opposite the anvil, which is constructed so as to cause a blow to expand both sides of the saw equally, and which in general is intended to facilitate the quick and efficient hammering of a saw" (lines 12-23).
Date: July 18, 1893
Creator: Dillon, Thomas H.
Partner: UNT Libraries Government Documents Department