Patent for an invention "to combine a jack-screw or lifting-jack with a clamp, so that they may be interchangeably used." (Lines 19-21) Includes instructions and illustrations.
Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.
Descriptive information to help identify this patent.
Follow the links below to find similar items on the Portal.
Titles
Main Title:
Improvement in Jack-Screws and Clamps Combined.
Added Title:
Jack-Screws and Clamps Combined.
Description
Patent for an invention "to combine a jack-screw or lifting-jack with a clamp, so that they may be interchangeably used." (Lines 19-21) Includes instructions and illustrations.
Physical Description
[1], 1 p. : ill. ; 23 cm.
Notes
Specification forming part of Letters Patent No. 139,157, dated May 20, 1873; application filed January 13, 1873.
Jackson, Thomas R.; Jackson, Asberry C. & Watson, Claudius S.Improvement in Jack-Screws and Clamps Combined.,
patent,
May 20, 1873;
[Washington D.C.].
(https://texashistory.unt.edu/ark:/67531/metapth166864/:
accessed June 11, 2024),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu;
crediting UNT Libraries Government Documents Department.