Patent for "an easy mode of straightening wells while drilling them through rock or earth, and also for enlarging the same into a cistern when it is desired to keep on hand a large supply of water." (Lines 8-13) Includes instructions and illustrations.
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Titles
Main Title:
Improvement in Double-Bitted Drills.
Added Title:
Double-Bitted Drill.
Description
Patent for "an easy mode of straightening wells while drilling them through rock or earth, and also for enlarging the same into a cistern when it is desired to keep on hand a large supply of water." (Lines 8-13) Includes instructions and illustrations.
Physical Description
[1], 1 p. : ill. ; 23 cm.
Notes
Specification forming part of Letters Patent No. 178,220, dated May 30, 1876; application filed October 20, 1875.
Yarbrough, William H.Improvement in Double-Bitted Drills.,
patent,
May 30, 1876;
[Washington D.C.].
(https://texashistory.unt.edu/ark:/67531/metapth166554/:
accessed April 27, 2024),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu;
crediting UNT Libraries Government Documents Department.