Electric motor. (open access)

Electric motor.

Patent for improved electric motor used in motor vehicles "which may be associated directly with the driving-wheel of a motor-vehicle" (lines 40-41), bypassing the need for other power-transmitting mechanisms. Includes instructions and illustrations.
Date: July 20, 1897
Creator: Perret, Frank A.
Object Type: Patent
System: The Portal to Texas History
Analysis and Calculation by Integral Methods of Laminar Compressible Boundary-Layer With Heat Transfer and With and Without Pressure Gradient (open access)

Analysis and Calculation by Integral Methods of Laminar Compressible Boundary-Layer With Heat Transfer and With and Without Pressure Gradient

From Introduction: "The purpose of the present report is to present a comprehensive summary of theoretical investigations of comprehensible laminar boundary layers which have been carried out since 1949 at the Polytechnic Institute of Brooklyn under the sponsorship and with the financial assistance of the National Advisory Committee for Aeronautics. The results of these investigations are contained primarily in references 1 to 7."
Date: April 12, 1955
Creator: Morduchow, Morris
Object Type: Report
System: The UNT Digital Library
Basement Flooding and Foundation Damage from Water-Table Rise in the East New York Section of Brooklyn, Long Island, New York (open access)

Basement Flooding and Foundation Damage from Water-Table Rise in the East New York Section of Brooklyn, Long Island, New York

From purpose and scope: The purpose and scope of this report is to present the factors that have caused the water-table rise in the East New York section of Brooklyn. The rising water table in Kings County is not sudden or new; it has a history of more than two decades. It will refocus attention on the problem of changing ground-water levels in areas where intensive ground-water pumping has ceased or is occurring.
Date: October 1976
Creator: Soren, Julian
Object Type: Report
System: The UNT Digital Library

OK, USA: A Musical Guide Book to the States: Soldier Shows "Blueprint Special"

The last of the U.S. Army Soldier Shows "Blueprint Specials" to be published, "OK, USA" is a musical revue on the theme of U.S. soldiers returning to the United States and finding it finding it as foreign and exotic as any country overseas because they have been away and living under extreme circumstances for so long. Like the other "Blueprint Specials," this show includes a complete script (multiple copies this time); a conductor's score and complete set of instrumental parts; a sample program; set and costume designs; and detailed instructions for producing the show using whatever materials are at hand. Unlike the other "Blueprint Specials," it includes no information on the librettists, songwriters, and other staff who worked on the show.
Date: 1945
Creator: United States. War Department.
Object Type: Musical Score/Notation
System: The UNT Digital Library
Oil-Converting Apparatus. (open access)

Oil-Converting Apparatus.

Patent for an apparatus that can be built at moderate cost, which will enable a high rate of commercially efficient work to reduce "the specific gravity of various grades of hyrdo-carbon oils, especially those of a semi-refined character" (lines 22 - 24).
Date: October 28, 1919
Creator: Adams, Joseph H.
Object Type: Patent
System: The Portal to Texas History
Wick Material (Illinois Patent). (open access)

Wick Material (Illinois Patent).

Patent for wick material, "composed of raw fibrous matter in layers or slivers in adhesive substance" (lines 16-17).
Date: July 1, 1890
Creator: Chapin, Myron H.
Object Type: Patent
System: The Portal to Texas History