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Saw Mill Dog.

Patent for a new and improved saw mill dog. This design "is an improvement in the class of dogging apparatus which is affixed to one of the knees of a head-block of the log-carriage" (lines 8-11). The improvement consists in the combination and arrangement of parts, specifically "the notched dog and adjustable slotted drop-catch with the slotted moveable dog-bar and base-stand" (lines 77-79).

Date: November 2, 1880

Creator: Wickham, William J.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Piston Packing.

Patent for a new and improved piston packing. This design consists in a "piston head cast entire and having radial arms bored out, in combination with the piston-segments, the steam-ports in the piston-plates, and stems of said segments, packing expansible rings on said stems, and the expansible packing-rings inclosing the said piston-segments" (lines 87-93).

Date: February 7, 1888

Creator: St. James, Henry L.