Resource Type

Hydrostatic Indicator for Weighing Scales. (open access)

Hydrostatic Indicator for Weighing Scales.

Patent for a new and improved hydrostatic indicator for scales. This design consists in "a reservoir, an outer cylinder, a hollow inner cylinder, an attached stand-pipe, and registering-dial, said inner cylinder being surrounded by and sliding within said outer cylinder, said outer cylinder being provided with an attached inlet-pipe communicating with said reservoir, said pipe being provided with two valves, in combination with a bearing-bar, side rods, and under bar, forming a frame bearing upon the inner cylinder" (lines 55-65).
Date: February 5, 1889
Creator: Lewis, Henry A.
System: The Portal to Texas History
Sewing Machine (open access)

Sewing Machine

Patent for a sewing machine "wherein the shuttle rotates...whereby the shuttle-thread at a certain time in each revolution of the shuttle is rewound upon the bobbin, which prevents the thread from twisting or untwisting" (Lines10-17).
Date: June 5, 1883
Creator: McAllister, Lewis C.
System: The Portal to Texas History