Apparatus for Utilizing Hot Slag for Heating Purposes (open access)

Apparatus for Utilizing Hot Slag for Heating Purposes

Patent for an apparatus which holds molten slag in the exterior chambers of the receptacle such that the interior chambers can receive water to be heated, producing steam and hot air.
Date: September 11, 1900
Creator: Wells, James L.
System: The Portal to Texas History
Lifting-Jack. (open access)

Lifting-Jack.

Patent for a simple, strong, and inexpensive lifting-jack used in railroads, mills, and similar things that is "capable of manipulation by a single operator and adapted to elevate loads to various heights according to the size of the structure and support the same at the desired elevation" (lines 12-16).
Date: September 11, 1894
Creator: Foix, Louis
System: The Portal to Texas History
Blast Device for Shoe-Polishing Machines. (open access)

Blast Device for Shoe-Polishing Machines.

Patent for blast device for shoe-polishing machine which is so constructed as to apply polish to a shoe and then dry the same and afterward polish the shoe, thus dispensing with the necessity of the employment of the ordinary brushes and other paraphernalia now in the use for the purpose.
Date: September 11, 1917
Creator: De Los Monteros, Gustavo Espinosa
System: The Portal to Texas History