Burglar-Alarm (open access)

Burglar-Alarm

Patent for improvements in burglar alarms, with horns and sirens.
Date: March 8, 1921
Creator: Sefcik, Francis
System: The Portal to Texas History
Cotton-Chopper (open access)

Cotton-Chopper

Patent for treating soil for agricultural purposes. This invention destroys the ridges used for planting and growing cotton and also cultivating the soil in the vicinity of the ridges.
Date: May 11, 1920
Creator: Kriel, John J.
System: The Portal to Texas History
Incubator (open access)

Incubator

Patent for an incubator designed to maintain temperature automatically.
Date: September 27, 1921
Creator: Kovar, Joe
System: The Portal to Texas History
Spring Wheel. (open access)

Spring Wheel.

Patent for new and useful improvements in spring wheels sufficient to enable it to successfully stand up under the shocks and jars to which such wheels are ordinarily subjected, while at the same time having all the wearing qualities and resiliency of the pneumatic tire.
Date: May 20, 1920
Creator: Atkinson, George C.
System: The Portal to Texas History
Gearing. (open access)

Gearing.

Patent for a speed transmission device that simply and efficiently changes the gears in an automobile especially at fluctuating speeds.
Date: September 13, 1921
Creator: Anderson, Bert
System: The Portal to Texas History
Wire-Straightening Tool. (open access)

Wire-Straightening Tool.

Patent for a wire straightening tool, with illustrations, that relies on a series of levers and cams to apply pressure to the wire as it is pulled through. The patent notes that "the wires can be straightened quickly and with facility, thereby permitting the using of all twisted and bent wire which has heretofore gone to waste and resulting in considerable saving of metal" (page 2, lines 14-18).
Date: January 27, 1920
Creator: Cervenka, Frank L.
System: The Portal to Texas History
Ensilage-Packer for Silos. (open access)

Ensilage-Packer for Silos.

Patent for a device in "which the center and edges" of a silo "will be packed with equal firmness and solidity" (lines 14-16) of materials, including an illustration and description of the device.
Date: March 23, 1920
Creator: Comer, John H.
System: The Portal to Texas History
Railroad-Crossing Signal (open access)

Railroad-Crossing Signal

Patent for signaling devices designed for use along railroads and grade crossings and meant to be automatically operated upon the approach of a train by giving a visible or audible signal at the crossing which will warn travelers of the approach of the train and calcuated to avoid the occurrence of accidents. The signal device includes a track associated train operated circuit closing device for energizing a bell, flashing light, or signal arm or any other equivalence or suitable signal device located at the crossing.
Date: October 17, 1922
Creator: Hamilton, Morgan Smith & Brady, Charles Pettus
System: The Portal to Texas History
Shoe (open access)

Shoe

Patent for improving the design and comfort of footwear that uses a fastening strap across the top to allow the user to quickly put on and take off the shoe. The design will also aid in preventing and correcting foot ailments that can occur when the boot or shoe is used in situations that typical cause problems such as long hikes, marches, or standing.
Date: January 20, 1920
Creator: Mann, William L.
System: The Portal to Texas History
Silo (open access)

Silo

Patent for a silo that is constructed in sections, making transport more efficient.
Date: June 15, 1920
Creator: Comer, John H.
System: The Portal to Texas History