UNT Libraries Government Documents Department - 130 Matching Results

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Improvement in Combination Locks.

Description: Patent for improved combination locks, with a bolt that is locked or unlocked by the combination of spindles and pivoted buttons. The invention combines the spindles in to an "annular ring having letters or numbers and a series of different shaped pegs or combinations of letters or figures or both jointly" (pg 1).
Date: September 12, 1871
Creator: Hall, William N.
Item Type: Refine your search to only Patent

Improvement in Key-Hole Guards.

Description: 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.
Item Type: Refine your search to only Patent

Improvement in Combination-Padlocks.

Description: 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 unit… more
Date: December 23, 1873
Creator: Hall, William N.
Item Type: Refine your search to only Patent

Improvement in Buckles.

Description: Patent for improvement in buckles by providing “with two two tongues on the same pivot, and with a guard for securing the same and the straps in position, thereby producing a simple and reliable means of connecting two straps.” (Lines 6-10) Illustration is included.
Date: June 18, 1872
Creator: Hardeman, Jerome B. R.
Item Type: Refine your search to only Patent

Ant Trap.

Description: Patent for a new and improved ant trap. This design calls for a tank of water to be buried in the ground and a collar of cheap material to be attached to the tank and placed over the mouth of an anthill. The concave nature of the collar prevents ants from climbing out of it, so they are forced into the water tank, where they drown; the design is cheaper and less toxic than previous designs.
Date: November 22, 1881
Creator: Arnett, Sandridge Thomas
Item Type: Refine your search to only Patent

Buckle.

Description: Patent for a new and improved buckle. This design "is composed of two parts, the upper end forming what may be termed a 'buckle proper,' to secure the end of a strap, and the lower ends formed into curved portions which fit one within the other and constructed to interlock, so that the lower end is adapted to catch a chain, bit, or other device which it is desired to connect a strap to, the . . . parts forming a hinge, whereby they can be turned one upon the other and separated entirely, or at … more
Date: August 16, 1892
Creator: Taylor, John Greene
Item Type: Refine your search to only Patent

Bevel.

Description: Patent for "bevel-squares adapted to be converted into a try-square through the medium of a pivoted and adjustable blade." (Lines 13-15) Includes instructions and illustrations.
Date: March 9, 1897
Creator: Morris, Thomas R.
Item Type: Refine your search to only Patent

Ant-Trap.

Description: Patent for a "trap designed to be placed around an ant-hill and adapted to capture ants leaving or returning to the ant-hill." (Lines 11-13) Includes instructions and illustrations.
Date: May 18, 1897
Creator: Bond, William Beebe
Item Type: Refine your search to only Patent

Car Coupling.

Description: Patent for a new and improved coupling for railroad cars. This design consists in "the combination of two sliding draw-heads, each provided with a shank having coiled around it a spring and a nut secured thereto, an upper sliding supporting-plate for the pin, having a tripping device, a lower sliding supporting-plate for the link, having a catch, a latch with a trip-arm for holding and releasing said plate, and a spring for drawing it back to its normal position" (lines 11-20).
Date: February 9, 1886
Creator: Ballentine, John C.
Item Type: Refine your search to only Patent

Cotton Chopper.

Description: Patent for a new and improved cotton chopper. This design consists in "[t]he combination of an axle, a frame, a shaft journaled longitudinally in the frame, radial arms mounted on the said shaft, gear connecting the said shaft with the axle, rectangular blades secured upon the ends of the said arms, the said blades being set diagonally, making their side edges parallel with the spiral path of the arms . . . and one blade being narrower than the others . . . whereby each blade will exactly coinc… more
Date: April 13, 1886
Creator: Ferriott, Charlie L.
Item Type: Refine your search to only Patent

Churn.

Description: Patent for a simple, inexpensive, and effective combined churn motor and dasher that continuously and smoothly circulates cream. It has a large wheel the operator turns, which is connected through a series of pulleys to the dasher. A large frame holds the parts in place.
Date: September 11, 1894
Creator: Baugh, Edward H.
Item Type: Refine your search to only Patent
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