UNT Libraries Government Documents Department - 4 Matching Results

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Clamp for Spirit-Levels.

Patent for clamps for spirit levels that allow a spirit level to be attached directly to a straight edge so that one person could safely use both the straight edge and the spirit level simultaneously. Additionally, the clamp production is simple so it can be produced at a low cost.

Date: April 30, 1918

Creator: Bridgman, Jesse Everet

Item Type: Patent

Improvement in Throttle-Valve Stands and Stems.

Patent for "a new arrangement of support for the stem of a throttle-valve, and has for its object to facilitate the lubricating of the screw and cause the parts to be firmly held in place." (Lines 19-23) Includes instructions and illustrations.

Date: April 2, 1872

Creator: Compant, John M. & Krauskopf, Engelbert

Item Type: Patent

Pump-Operating Mechanism.

Patent for a pump operating mechanism, which is run by horses going in a circle around the device to power the pump.

Date: April 27, 1909

Creator: Siggel, Willie F.

Item Type: Patent

Tire Bolt Wrench

Patent for a tire bolt wrench. Illustration included.

Date: April 4, 1905

Creator: Moore, James R.

Item Type: Patent

UNT Libraries Government Documents Department - 4 Matching Results

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Clamp for Spirit-Levels.

Improvement in Throttle-Valve Stands and Stems.

Pump-Operating Mechanism.

Tire Bolt Wrench