UNT Libraries Government Documents Department - 3 Matching Results

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Improvement in Saws.

Patent for improvements to circular or straight saws that steady the saw and prevent vibration and buckling. Includes instructions and illustrations.

Date: December 19, 1871

Creator: Littlepage, Caleb V.

Improvement in Elevators.

Patent for improvements in elevators, for lifting heavy objects. It includes a description and illustration.

Date: June 13, 1871

Creator: Bishop, Josiah

Improvement in Methods of Forming Saw-Teeth.

Patent for "a rule for giving to the backs of saw-teeth such an angle as will allow the teeth to be made of proper strength and at the same time to be chambered out and pointed so that they will cut the wood like chisels instead of scraping or tearing the wood." (Lines 14-19) Includes instructions and illustrations.