Filter. (open access)

Filter.

Patent for a new and improved filter. This design is for "[a] filter consisting of sections secured together at their meeting edges by a lapped joint, the upper edge of [a] section being fitted wholly within [another] section and forming a shoulder for the support of a screen-plate, and the body of filtering material above, a shoulder on [a] section below [the] shoulder, and screen plates resting on and held to the shoulders by the weight of the body of filtering material, whereby, when the filter-sections are inverted, the [other] shoulder serves to support [the] screen and the filtering material above" (lines 45-56).
Date: February 15, 1887
Creator: Begemann, Charles Fredrich William
System: The Portal to Texas History
Saw Gummer and Sharpener. (open access)

Saw Gummer and Sharpener.

Patent for a multiple saw gummer and sharpener.
Date: February 15, 1887
Creator: Eidelbach, Andrew C.
System: The Portal to Texas History
Refrigerator. (open access)

Refrigerator.

Patent for a new and improved refrigerator. This design "consist[s] of the cooling-box having top doors, the over-hanging frame, guide-pulleys, cords, and weights, the ice-box having an ice support or grate in its lower end, a water-tank in the upper end of said ice-box, and a discharge-pipe connected with the tank and having its lower portion disposed in coils below the ice support or grate" (lines 13-21).
Date: February 15, 1887
Creator: Dunn, William W.
System: The Portal to Texas History