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AIR-BREAK SIGNALING AND RELEASEING DEVICE.
Patent for an improvement in air-brake release-valve in trains to signal train crews and release the breaks if they become set for any reason, or stuck, while the train is moving, including descriptions of the release valve and illustrations.
Date:
November 4, 1902
Creator:
Dukesmith, Frank H.
Object Type:
Patent
System:
The Portal to Texas History
Public Building at Hinton, W. Va., Report
...
Date:
1908~
Creator:
United States. Congress. Senate. Committee on Public Buildings and Grounds
Object Type:
Report
System:
The UNT Digital Library
Farmers' Reading Courses
Report discussing the main features of the farmers' reading courses that have become popular in several states through agricultural colleges and experiment stations. The reading courses are designed to provide farmers with a systematic approach to their work through the study of a scientifically sound and accessible textbook curriculum.
Date:
1900
Creator:
Bailey, L. H. (Liberty Hyde), 1858-1954
Object Type:
Pamphlet
System:
The UNT Digital Library
Notes on Explosive Mine Gases and Dusts: with Special Reference to Explosions in the Monongah, Darr, and Naomi Coal Mines
From Introduction: "The studies herein reported were begun as a part of researches undertaken by the United States Geological Survey looking to the more efficient utilization of the coal in the United States through the reduction of the waste in its extraction, and were continued as part of further researches having regard to the conversation of the fuel resources of this country and to the lessening of injuries and fatalities in coal mining."
Date:
1909
Creator:
Chamberlin, Rollin Thomas
Object Type:
Report
System:
The UNT Digital Library