UNT Libraries Government Documents Department - 5 Matching Results
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- Load-Indicating attachment for drilling-rigs
- Patent for the invention is to provide a character to be attached on a mounted on the derrick of a drilling rig and which will accurately indicate the cooperative weight of the load attached to the back of rig.
- Hydrocarbon-Burner
- Patent for a burner constructed to admit a force of steam or air is sent through the nozzle with assigning to the fuel in fuel reservoir. This invention is used to burn the heavy crude oil.
- Rotary Boring Drill
- Patent for a rotary boring drill that shears off material in a circular manner while drilling holes.
- Patent for Disk Drill
- Patent for disk drill.
- Detachable Drill-Bit.
- Patent for a new invention in drill-bit machine which can be detached from two different sides and very flexible for use.