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in creator/contributor: "Graphic Company"

Improvement in Vehicle-Springs.

Patent for "an improvement in springs for carriages" (lines 4-5), including illustrations.

Date: July 28, 1874

Creator: Richardson, John D.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Improvement in Locomotive Smoke - Stacks.

Patent for new and useful improvement in locomotive smoke stacks, "in which the sparks, live cinders, and other heavy particles are arrested near the top of the stack." It consists of a petticoat-pipe, arranged so that it may be raised or lowered for the purpose of regulating the draft.

Date: January 5, 1875

Creator: Cleary, Edward

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Improvement in Saw-Mills

Patent for an improvement in saw mills, with illustration.

Date: February 9, 1875

Creator: Linder, Charles

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Improvement in Screw-Taps.

Patent for "a tool that shall combine the features of an expanding tap and reamer for reaming and tapping holes of different sizes" (lines 29-32) with illustrations and instructions.

Date: November 7, 1876

Creator: Melvin, Josiah Walter

Item Type: Patent

Partner: UNT Libraries Government Documents Department