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.

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.

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.

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.

Improvement In Cotton-Gin-Saw Cleaners.

Description: Patent for "a device for quickly cleaning the saws of cotton-gins when they become gummed. It consists in a series of knives that are supported by a movable bar or frame, and may be thrust between the saws when the saws are to be cleaned (para. 4-5).
Date: April 23, 1878
Creator: Munger, Robert S.

Improvement in Cotton-Gin-Saw Cleaners.

Description: Reissued patent for "a device for quickly cleaning the saws of cotton-gins when they become gummed. It consists in a series of knives that are supported by a movable bar or frame, and may be thrust between the saws when the same are to be cleaned (para. 4-5).
Date: May 20, 1879
Creator: Munger, Robert S.

Sulky-Plow

Description: Patent for a new and useful improvement in Sulky-Plows. The invention utilizes "a novel construction-levers, and arrangement of hangers, braces, and levers, whereby provision is made for the attachment of plow-beams of different sizes, and for adjusting the parts" (lines 7-11)
Date: July 20, 1880
Creator: Powell, Louis W.

Churn Power.

Description: Patent for a new and improved motorized butter churn. This design utilizes paralleled uprights, shafts, through-holes, screw-holes, a crank, pit-men, and a cross-head (lines 85-92). This combination and arrangement of parts allows rotary motion to be converted to reciprocal motion, which improves the churning process.
Date: August 10, 1880
Creator: Brace, James

Spoke Socket.

Description: Patent for a new and improved vehicle wheel for "preventing the tire from becoming loose" and "preventing the loosening and rattling of the spokes" (lines 8-11). This design achieves these feats with conically-tipped spokes encased by rubber cushions.
Date: September 14, 1880
Creator: Harrington, John A.
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