84 Matching Results

Search Results

Improvement in Combination Locks.

Description: Patent for combination latch-locks, "in such manner as that the knob-latch, while performing its special function, will also serve as the lock upon any combination to which it may be adjusted, and the said latch can be operated from either the outside or inside of the door as a latch simply, or as a combination lock, which latter is further secured from the inside by the employment of a safety pin, rendering the bolt in its locked position perfectly secure, while by its partial withdrawal it prevents the possible change of the combination from the outside, and admits of the free use of the latch independent of such combination." (Lines 29-42) Includes instructions and illustrations.
Date: July 1, 1873
Creator: Hall, Phidello W.
Partner: UNT Libraries Government Documents Department

Improvement in Permutation-Locks. [PAGES MISSING]

Description: Patent for an improvement to combination locks. "It consists of various devices, which are operated by a revolving wheel having a number of projections or pins upon its periphery, which differ so materially from each other in shape that they can be easily recognized by day or night by the touch alone." (Lines 13-19) Illustration included.
Date: September 9, 1873
Creator: Hall, Phildello W.
Partner: UNT Libraries Government Documents Department

Improvement in Bridges.

Description: 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."
Date: May 26, 1873
Creator: Davis, Benjamin F.
Partner: UNT Libraries Government Documents Department

Foot for Plow-Stocks.

Description: Patent for improvements in plows by using the combination of “two forwardly-curved bars which clamped to a plow-beam, and the heel having its forward end rigidly secured between the lower ends of the bars and its rear portion bent upwardly and forwardly and secured between the bars.” (Lines 94-100) Illustration is included.
Date: April 28, 1891
Creator: Brown, William B.
Partner: UNT Libraries Government Documents Department

Trolley Mechanism.

Description: Patent for a trolley mechanism that is a pivoting "yoke adapted to normally follow being swerved out of line when the car is going around curve of the trolley wire; to prevent catching on cross-wires in case the trolley wheel should leave the line-wire; and to adjust the amount of pivotal action of said yoke with regard to the trolley pole" (lines 13-20).
Date: November 21, 1893
Creator: Fuller, James T.
Partner: UNT Libraries Government Documents Department

Cattle-Guard.

Description: Patent for a simple cattle-guard that provides an unstable footing for the cattle without injuring them, and thus preventing the cattle from going onto train tracks. The cattle do not get injured when stepping on this device.
Date: February 20, 1894
Creator: Brady, Peter L.
Partner: UNT Libraries Government Documents Department

Riveting-Machine.

Description: Patent for improvements in "which rivets may be rapidly set in the material to be riveted, the rivet being driven and headed at the same operatio and without first punching holes in the material to be riveted." (Lines 15-19) Illustration is included.
Date: June 30, 1891
Creator: Carl, Reinhold A.
Partner: UNT Libraries Government Documents Department

Fertilizer-Distributer.

Description: Patent for improvements in fertilizer distributers by using a combination of a hopper, a detachable drill-chute, two shafts with fingers inside the hopper, and an inclined spring-held and adjustable apron attached at the rear end of the hopper. This adjustable apron allows the shafts to operate effectively and efficiently. Illustration is included.
Date: August 4, 1891
Creator: Barron, John Davis
Partner: UNT Libraries Government Documents Department

Plow.

Description: Patent for "an improved plow of simple and inexpensive construction employing two shovels so arranged and attached that either one may be quickly and easily removed to convert the plow into either a right or left hand plow, and has for its further object to provide a plow especially designed for opening new ground wherein the plowing is rendered difficult by the presence of roots and similar growth" (lines 9-18).
Date: December 15, 1896
Creator: Stephens, William
Partner: UNT Libraries Government Documents Department

Ratchet-Clutch

Description: Patent for a clutch design that enables the use of a single clutch in agricultural machine engines.
Date: May 18, 1915
Creator: Smith, John H.
Partner: UNT Libraries Government Documents Department