Improvement in Clay Grinder and Mixer. (open access)

Improvement in Clay Grinder and Mixer.

Patent for a new clay grinder and mixer design which "will be found to be especially useful in connection with brick-machines" (p. 2) including illustrations.
Date: May 27, 1879
Creator: Kennedy, John M.
System: The Portal to Texas History
Improvement in Piano-Forte Actions. (open access)

Improvement in Piano-Forte Actions.

Patent for a new piano forte design which "consists in certain novel details of construction, arrangement, and combination of the key-lever and its fulcrum and rest, a receiving-lever, a transmitting-eccentric, a secondary hammer, a principal hammer and its rest, and a damper-action and its connections, whereby greater simplicity and efficiency are obtained" (lines 10-17) including illustrations.
Date: May 27, 1879
Creator: Roedern, George O. V.
System: The Portal to Texas History
Improvement in Bleaching Resins. (open access)

Improvement in Bleaching Resins.

Patent for a process to "bleach, clarify, and refine the commonest and lowest grade of resin, and such is now known to the trade as black resin, as to produce therefrom, by a cheap and simple means or process, an article as pure as extra pale, or resin which is the product of the virgin dip, and which for use in all the arts where the finest quality of resin is desirable or required, is equally as valuable." (Lines 14-23) Includes instructions and illustrations.
Date: May 27, 1873
Creator: Lee, Archibald K.
System: The Portal to Texas History