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Rotary Valve for Steam-Engines.

Description: Patent for a rotary valve for steam-engines that has a simplified valve and less pressure on the valve. It has a rocking valve that is "operating within a steam chest independent of the cylinder and connected therewith by pipes entering through the cylinder ends, a cam movement being provided for rocking the valve" (lines 21-25).
Date: September 18, 1894
Creator: Lester, Frank
Partner: UNT Libraries Government Documents Department

Port-Regulating Valve.

Description: Patent for a port-regulating valve. It is meant for use in steam-engines and regulates the steam in engines that the inventor had previously patented (No. 523,360). "The invention consists of a slide-valve for covering each port leading from the steam-chest to the rock-valve, with means for operating such slide-valves from the shaft controlling the rock-valve, and a link movement for adjusting the throw of the slide-valves and which is under the control of the engineer" (lines 21-28).
Date: August 27, 1895
Creator: Lester, Frank
Partner: UNT Libraries Government Documents Department

Reversible Steam-Engine.

Description: Patent for "reversible reciprocating steam engines, its objects being to simplify the mechanism for reversing the valve, and to provide a valve in which the area of steam pressure upon its face is reduced to the minimum." (Lines 14-19) Includes instructions and illustrations.
Date: July 24, 1894
Creator: Lester, Frank
Partner: UNT Libraries Government Documents Department

Rotary Churn.

Description: Patent for a manual rotary churn with two dasher blades, including instructions and illustrations.
Date: March 12, 1912
Creator: Martin, Harry T.
Partner: UNT Libraries Government Documents Department

Driving Mechanism for Tractors

Description: Patent for an invention relating to the engines of tractors that provides "improved transmission gearing for controlling the movements of the machine." (lines 17-18)
Date: August 19, 1913
Creator: Ingram, Joseph D.
Partner: UNT Libraries Government Documents Department

Draft-Gear.

Description: Patent for improvements in draft-gear by using a drive wheel and an arcuate guide to maintain the line of draft from the load to the center of the main or drive axle irrespective of the position of the load relative to the engine (lines 17-20). Illustration is included.
Date: July 8, 1913
Creator: Ingram, Joseph D.
Partner: UNT Libraries Government Documents Department

[School Portraits of Two Students]

Description: Photograph of 2 female students. The two photos of the young girl on the left side shows her in different dark color clothing and dark color hats. The young girl to the right is show in one photo graph sitting down with flowers in front of her. In the next photo she is holding a patterned parasol.
Date: 1921
Partner: Amarillo Public Library

[Panhandle, Texas school]

Description: Photograph of the school building in the town of Panhandle, Texas. Children of various ages stand and kneel in loose rows in front of the frame building. A man and woman are standing behind the children, and two young women are leaning out of one of the school's windows. The schoolhouse is a single-story frame building with two chimneys visible. A saddled horse is visible to one side of the building.
Date: unknown
Partner: Panhandle-Plains Historical Museum
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