UNT Libraries Government Documents Department - 6 Matching Results

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Means for Reducing Wear in the Working Barrels of Pumps

Patent for a means of reducing wear in the working barrels of pumps. The pumps made in this wat are specially adapted for operations in water or oil wells where the fluid being pumped is is mixed with sand and sediment.

Date: March 4, 1919

Creator: Carmichael, Robert E.

Item Type: Patent

Rotary Boring Drill

Patent for a rotary boring drill to be used in mining and drilling.

Date: March 4, 1919

Creator: Carmichael, R. E.

Item Type: Patent

Rail Connection

Patent for a rail connection. This invention consists of heavy fish-plates and screw bolts that are supported between adjacent cross ties

Date: January 4, 1910

Creator: Grass, Henry

Item Type: Patent

Coffee-Pot

Patent for a simplified coffee pot that extracts coffee by using boiling water and the receptacle without changing the structure of the device.

Date: July 4, 1905

Creator: Haley, William L.

Item Type: Patent

Texas Attorney General Opinion: S-36

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John Ben Shepperd, regarding a legal question submitted for clarification: Authority of the commissioners' court to approve the expenditure of county funds to send a representative to Mexico City to confer with various interested persons respecting removal of a ban by the Republic of Mexico on the use of the migratory … more

Date: May 4, 1953

Creator: Texas. Attorney-General's Office.

Item Type: Text

Improvement in Seeding-Machines.

Patent for the improvement of seed-planters using a rotary system to distribute seeds from a drum and into the soil, including illustration.

Date: September 4, 1860

Creator: Park, A. R.

Item Type: Patent

UNT Libraries Government Documents Department - 6 Matching Results

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Means for Reducing Wear in the Working Barrels of Pumps

Rotary Boring Drill

Rail Connection

Coffee-Pot

Texas Attorney General Opinion: S-36

Improvement in Seeding-Machines.