7 Matching Results

Results open in a new window/tab.

Mold. (open access)

Mold.

Patent for a new, improved Mold "specially designed for the formation of the rings of packing such as is used in stuffing boxes for packing metallic rods" (lines 11-14), illustrations included.
Date: January 24, 1922
Creator: Miller, Ose Z.
System: The Portal to Texas History
Dental-Broach Holder. (open access)

Dental-Broach Holder.

Patent for a dental broach holder that can be easily cleaned, and that includes certain structural elements that keep a dental broach more secure during use. The broach fastens on the outside of the holder, the mechanism of which "[prevents] loss of the broach in the patient's mouth during operation" (lines 92-94).
Date: January 24, 1922
Creator: Gilbert, James M.
System: The Portal to Texas History
Spark Plug. (open access)

Spark Plug.

Patent for a spark plug with the capacity to afford an intense spark, prevent leakage of current, and to preclude fouling of the plug in carbon.
Date: October 24, 1922
Creator: Bronson, Fred L.
System: The Portal to Texas History
Mousetrap (open access)

Mousetrap

Patent for a mousetrap that is an improvement to the average mousetrap, but new in the sense that it can be made in various proportions or sizes for a variety of vermin.
Date: January 24, 1922
Creator: Spencer, Clarence E.
System: The Portal to Texas History
Electric Battery (open access)

Electric Battery

Patent for an electric battery. This battery is designed to be more efficient and run for a longer time, without adding water.
Date: October 24, 1922
Creator: Holmes, Frank M.
System: The Portal to Texas History
Rural Mail Box. (open access)

Rural Mail Box.

Patent for improvements to rural mail boxes with divided interior compartments for incoming and outgoing mail. Mail box design includes flag to signal to recipients and postman of incoming and outgoing items. Additionally the design features interior and exterior doors that can be secured with a padlock to prevent mail from being stolen or tampered with, and to shield from various weather conditions.
Date: October 24, 1922
Creator: Dooley, Will Henry
System: The Portal to Texas History
Trailer for Land Vehicles. (open access)

Trailer for Land Vehicles.

Patent for a trailer attachment for land vehicles, particularly automobiles.
Date: January 24, 1922
Creator: Brown, William F.
System: The Portal to Texas History