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Wrench.

Description: Patent for a "powerful wrench of simple construction, wherein the movement for the operation of the jaws is of slight degree, partially automatic, and easily affected" (lines 41-45).
Date: April 23, 1907
Creator: Tiner, John F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Spark-Arrester.

Description: Patent for a steam train locomotive spark arrester consisting of curved pipe smoke stack that holds solid particles of exhaust on the edges of the pipe, which are expelled by the force of exhaust gases coming through, into the fire box thereby preventing their escape outside the engine reducing danger from stray sparks. This system also uses less fuel than previous systems.
Date: April 23, 1907
Creator: Chalfant, Cotter Strawn
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Plow.

Description: Patent for a plow that is simpler, more durable, and cheaper to make than previous ones and allows for easier adjustments in plowing depth.
Date: April 23, 1907
Creator: Stafford, George A. & Henry, Edward
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rail-Fastening Device.

Description: Patent for a rail fastening device for use in building street car tracks on roads with concrete foundations. The fastener is put in place in the wet concrete and held fast there by its hardening and eliminates the need for cross ties.
Date: April 23, 1907
Creator: Crerar, James P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pile Structure.

Description: Patent for piling structures used in bridges and other structures built in sandy areas that allows for digging the piling hole to any depth desired and prevents cave-ins of the interior of the piling before it is filled with concrete.
Date: April 23, 1907
Creator: Pyle, Jesse Theodor
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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