Resource Type
Counties
5 Matching Results
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Improvement in Nails.
Patent for a nail with hexagonal form with two sides nearly flat and beveled edges.
Date:
January 21, 1873
Creator:
Hall, William N.
System:
The Portal to Texas History
Improvement in Key-Hole Guards.
Patent for "a guard for key-holes of locks, to prevent the use of keys by unauthorized persons, the picking of the lock, and as a means for operating the bolt when fitted for that purpose." (Lines 7-11) Includes instructions and illustrations.
Date:
December 23, 1873
Creator:
Hall, William N.
System:
The Portal to Texas History
Improvement in Ant Traps
Patent for the improvement of Ant traps, including to illustrated and labeled figures.
Date:
April 1, 1873
Creator:
Ames, Theodore G.
System:
The Portal to Texas History
Improvement in Combined Adjustable Fire-Fenders, Grates, and Andirons.
Patent for improvement in fire-fender and grate with separable andirons that is adjustable to different fireplaces, and which can be adapted for wood or coal.
Date:
May 13, 1873
Creator:
Hall, William N.
System:
The Portal to Texas History
Improvement in Combination-Padlocks.
Patent for "a padlock in which the permutation locking device is not permanently connected to the hasp; and said invention consists of a permutation device the fixed ends whereof are provided with sockets to receive the ends of a separate hasp, and be locked therewith by a notched bolt passing through the permutation device and both ends of the hasp, whereby the usual hinged connection of the parts is avoided, and the padlock made more secure and cheaper than when the parts are permanently united." (Lines 6-17) Includes instructions and illustrations.
Date:
December 23, 1873
Creator:
Hall, William N.
System:
The Portal to Texas History