Check-Punch. (open access)

Check-Punch.

Patent for a simple, inexpensive, and compact check-punch that can be operated by one hand and doesn't take much power to operate. The machine consists of two movable members, "one of which carries all of the male and the other all of the female dies, said members being so related that when moved relatively to each other in one direction all the male dies move as a single member...and enter the female dies, and when moved in the opposite direction all of said male dies are withdrawn" (lines 12-20).
Date: March 17, 1896
Creator: Woodworth, Charles H.
Object Type: Patent
System: The Portal to Texas History
Broom or Brush (open access)

Broom or Brush

Patent for metal brooms or brushes that are "strong and durable, relatively light in weight, and can be inexpensively manufactured" (line 13-15). It is intended for "sweeping snow, mud, slush, and the like" (line 16-17). The patent can also be applied for smaller version of metal brooms or brushes for other purposes.
Date: March 16, 1915
Creator: Airhart, Noah S.
Object Type: Patent
System: The Portal to Texas History
External Environmental Radiation Measurements in the United States (open access)

External Environmental Radiation Measurements in the United States

Report regarding ion chamber measurements made of the external environmental radiation in various location in the United States during the summer of 1957.
Date: March 11, 1958
Creator: Solon, Leonard R.; Lowder, Wayne M.; Zila, Albert; LeVine, H. D.; Blatz, Hanson & Eisenbud, Merril
Object Type: Report
System: The UNT Digital Library
Summary of Conference on the Toxicity of Carbon 14 Held at Argonne National Laboratory, January 15-16, 1952 (open access)

Summary of Conference on the Toxicity of Carbon 14 Held at Argonne National Laboratory, January 15-16, 1952

Report issued by the Argonne National Laboratory discussing the Conference on the Toxicity of Carbon 14. At the outset of the meeting it was emphasized that the group was brought together to discuss work which had a bearing on the toxicity of C14 compounds used either clinically or industrially, and the hope was expressed that the group might be able to reach some conclusions on these matters. This report includes tables.
Date: March 1952
Creator: Brues, A. M. & Buchanan, D. L.
Object Type: Report
System: The UNT Digital Library
Nozzle. (open access)

Nozzle.

Patent for a hose nozzle with increased capacity and efficiency. Includes instructions and illustrations.
Date: March 16, 1897
Creator: Adams, Don B.
Object Type: Patent
System: The Portal to Texas History
Retort Vaporizer and Superheater (open access)

Retort Vaporizer and Superheater

Patent for improvements for vaporizers "of simple and highly efficient means for thoroughly and effectively superheating the vapor of water and oil" (lines 13-15).
Date: March 26, 1889
Creator: Biddison, Stella D.
Object Type: Patent
System: The Portal to Texas History
Frame for Jaw Crushers (open access)

Frame for Jaw Crushers

Patent for "new and useful Improvements in frames for Jaw-Crushers (lines 8-9) including illustrations.
Date: March 25, 1919
Creator: Easton, William B. & Cole, David
Object Type: Patent
System: The Portal to Texas History