Insertible Saw-Tooth. (open access)

Insertible Saw-Tooth.

Patent for an insertible saw tooth, which does not require the use of a separate holder.
Date: March 24, 1908
Creator: Askins, William H.
System: The Portal to Texas History
Dressing Millstones. (open access)

Dressing Millstones.

Patent for "a new and improved mode of dressing millstones for the purpose of grinding every kind of grain into meal flour &c., &c." (lines 4-7) including instructions and illustrations.
Date: March 4, 1851
Creator: Gaines, Edmund P.
System: The Portal to Texas History
Improvement in Revolving Fire-Arms. (open access)

Improvement in Revolving Fire-Arms.

Patent for discharging buckshot without reloading and with the precision of firing "a single bullet fired from a barrel of proper bore to fit it" (lines 17-18), including illustrations.
Date: March 1, 1859
Creator: Haynes, William C.
System: The Portal to Texas History
Mill-Stone Dress. (open access)

Mill-Stone Dress.

Patent for Mill Stone Dressing- the pattern on a mill stone for the better grinding of grains into flour. The furrows and grooves of the new design allow grain to be "milled... at greater speed (and)even distribution."
Date: March 8, 1870
Creator: Loy, G. W.
System: The Portal to Texas History
Cotton-Chopper. (open access)

Cotton-Chopper.

Patent for a cotton chopping wheel which can be attached to any style of plow or cultivator. Includes instructions and illustrations.
Date: March 9, 1897
Creator: Rusk, William Thomas.
System: The Portal to Texas History