UNT Libraries Government Documents Department - 5 Matching Results
Search Results
- Telephone Attachment.
- Patent for a telephone attachment for multi-party lines, which allows the user to hold the line against eavesdropping by other users on the line and let multiple people use the line at the same time.
- Cotton-Chopper.
- Patent for a new "machine for chopping surplus cotton or corn out of the rows or drills, leaving it in hills at the desired distance apart" (lines 8-11) including instructions and illustrations.
- Horseshoe.
- Patent for improvements in horseshoes, which will have two parts that pivot together at the toe. Includes instructions and illustrations.
- Improvement in Bridges.
- Patent for an improvement in Bridges and Self-Supporting Roofs and Girders. The invention provides instruction for "the construction of truss-bridges and self supporting roofs and girders"..."by nailing or bolting securely together successive layers of plank joined at different points."
- Improvement in Car-Couplings.
- Patent for an improved automatic car-coupling, including illustrations.