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Rotary Boring Machine.

Description: Patent for a rotary boring machine, which automatically sends out of the machine mud it digs up and can have the rotary pinion easily removed.
Date: March 31, 1908
Creator: Wiggs, James A., Jr.
Partner: UNT Libraries Government Documents Department

Rotary Explosive-Engine.

Description: Patent for a rotary explosive engine which minimizes the waste of power.
Date: March 31, 1908
Creator: Walker, James C.
Partner: UNT Libraries Government Documents Department

Buttonhole Cutter or Shears.

Description: Patent for a buttonhole cutter or shears, which has an adjustable stop for creating buttonholes of different sizes.
Date: March 17, 1908
Creator: Barr, George T.
Partner: UNT Libraries Government Documents Department
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