UNT Libraries Government Documents Department - 1,159 Matching Results

Search Results

prev Results: 1021 - 1044 next

Rail-Joint.

Description: Patent for a rail joint that is made in sections that can be easily assembled on site and that locks in place better due to the addition of metal lugs that push against plates in the rails.
Date: April 9, 1907
Creator: Stephens, Charles H.
Item Type: Refine your search to only Patent

Rail-Joint

Description: Patent for improvements of rail joints in terms of "rigidity, durability, and efficiency" (lines 10-11), and to prevent "low joints" (line 21). Includes illustrations.
Date: January 9, 1906
Creator: Stephens, Charles H.
Item Type: Refine your search to only Patent

Railroad-Crossing Signal

Description: 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 … more
Date: October 17, 1922
Creator: Hamilton, Morgan Smith & Brady, Charles Pettus
Item Type: Refine your search to only Patent

Railway Rail Fastening.

Description: Patent for a new and improved rail fastening. This design consists in "[t]he combination of the tie having upwardly-inclined ends, the chairs having the recesses on their under sides to receive the ends of the tie, said recesses having their outer ends inclined to correspond with the inclination of the ends of the tie, and the clamping devices connecting the chairs together, and thereby securing them firmly on the ends of the tie" (lines 90-97).
Date: November 27, 1888
Creator: McRae, Daniel M.
Item Type: Refine your search to only Patent

Releasing Device for Brakes of Locomotive Drive-Wheels.

Description: Patent for a simple and durable improved releasing device for brakes of locomotive drive-wheels that prevents "the drive wheels from being locked and sliding on the track rails, to obviate the uneven wear on the wheel tire" (lines 15-18). The invention has an auxiliary piston connected to the triple valve piston and is controlled by back pressure in the steam chest.
Date: November 27, 1894
Creator: Pelham, Walter O.
Item Type: Refine your search to only Patent

Rock Drill.

Description: Patent for a new and improved rock drill. This design consists in "the combination, with the bit having the inclined cutting-edge extending diagonally from one end to the other and the curved recesses formed in the sides of the bit, of the passage-ways or grooves at either end of said cutting-edge opening into the said recesses" (lines 64-70).
Date: December 28, 1886
Creator: Rader, Powell
Item Type: Refine your search to only Patent

Round Rock Quadrangle

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24,000
Date: 1987
Creator: Geological Survey (U.S.)
Item Type: Refine your search to only Map
Location: 30.56 -97.69

Round Rock Quadrangle

Description: Satellite image topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24,000
Date: 2010
Creator: Geological Survey (U.S.)
Item Type: Refine your search to only Map
Location: 30.56 -97.69

Round Rock Quadrangle

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date: 1951
Creator: Geological Survey (U.S.)
Item Type: Refine your search to only Map
Location: 30.62 -97.62

Round Rock Quadrangle

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24000
Date: 2013
Creator: Geological Survey (U.S.)
Item Type: Refine your search to only Map
Location: 30.56 -97.69

Round Rock Quadrangle

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date: 1945
Creator: Geological Survey (U.S.)
Item Type: Refine your search to only Map
Location: 30.62 -97.62

Round Rock Quadrangle

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date: 1967
Creator: Geological Survey (U.S.)
Item Type: Refine your search to only Map
Location: 30.62 -97.62

Round Rock Quadrangle

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24000
Date: 1987
Creator: Geological Survey (U.S.)
Item Type: Refine your search to only Map
Location: 30.56 -97.69

Round Rock Quadrangle

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24000
Date: 1982
Creator: Geological Survey (U.S.)
Item Type: Refine your search to only Map
Location: 30.56 -97.69
Back to Top of Screen