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 Collection: Texas Patents
Acetylene-Gas Generator.

Acetylene-Gas Generator.

Date: December 5, 1899
Creator: Schaefer, Henry P.
Description: Patent for a new and improved gas generator, including instructions and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Acetylene Gas Generator

Acetylene Gas Generator

Date: April 26, 1898
Creator: Williams, B. F.
Description: Patent for "a new and useful acetylene-gas generator" (lines 5-6), including illustrations and instructions.
Contributing Partner: UNT Libraries Government Documents Department
Acetylene-Gas Generator.

Acetylene-Gas Generator.

Date: July 31, 1900
Creator: Hartman, Gus
Description: Patent for "improvement in acetylene-gas generators, and has for one object to provide an exceedingly- simple apparatus of this description in which the pipes and connections are closed , and thus protected from freezing by the effects of atmospheric changes; and a further object of my invention is to remove the possibility of an explosion taking place during the manipulation of the machine." (lines 9-17) including illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Acetylene-Gas Generator.

Acetylene-Gas Generator.

Date: January 25, 1900
Creator: Lindholm, Charlie M.
Description: Patent for an improved acetylene-gas generator "which is kept in a relatively-cool condition by a surrounding bath of water and which generator is removable at will from the floatable bell of the tank. A further object is to prevent the waste carbid from dropping into the water of the expansible tank and to provide for the free discharge of gas from the generator [...] while [...] permitting the expeditious removal of said generator for the purpose of cleaning and recharging" (lines 13-24).
Contributing Partner: UNT Libraries Government Documents Department
Acetylene-Gas Generator

Acetylene-Gas Generator

Date: March 19, 1901
Creator: Elkins, George L.
Description: Patent for an improved automatic acetylene-gas generator which allows the carbid vessel to recharge with carbid without permitting the escape of gas, and also to simplify the construction of the generator.
Contributing Partner: UNT Libraries Government Documents Department
Acetylene-Gas Lamp.

Acetylene-Gas Lamp.

Date: February 20, 1900
Creator: Josserand, Peter
Description: Patent for certain new and useful improvements in acetylene gas lamps, including instructions and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Acetylene-Gas Lamp.

Acetylene-Gas Lamp.

Date: October 10, 1899
Creator: Josserand, Peter
Description: Patent for a new and improved acetylene gas lamp, including instructions and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Acetylene Gas Machine

Acetylene Gas Machine

Date: December 14, 1897
Creator: Bryant, Henry
Description: Patent for a new and useful improvement in gas-machines.
Contributing Partner: UNT Libraries Government Documents Department
Adding Machine.

Adding Machine.

Date: September 22, 1885
Creator: McCaleb, John L.
Description: Patent for a new and improved adding machine. This design "consists in the combination, with a box, of a spindle in the same, a sleeve surrounding the spindle, a hand on the spindle, a hand on the sleeve, devices for turning the spindle from the sleeve, a cog-wheel revolving from the spindle, and an extra hand in connection with the cog-wheel" (lines 10-16).
Contributing Partner: UNT Libraries Government Documents Department
Adding-Machine.

Adding-Machine.

Date: May 12, 1891
Creator: Wright, Joseph W.
Description: Patent for am adding machine by using two disks, one a units-disk with pins in multiples of ten, one a tens-disk, is an annular disk with pin surrounding the units disk, an outwardly spring-pressed holder having a beveled outer end frictionally engaging the pins of the tens-disk and a carrier having oppositely-beveled ends engaged a supplemental pin and one pin on the tens-disks, teeth in the adjacent faces of the holder and carrier, and an idle-gear between them to enable the adding operation. (Lines 50-62) Illustration is included.
Contributing Partner: UNT Libraries Government Documents Department