Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7120565 | Method and apparatus for determining figure The present invention aims to provide apparatus and method for determining non-circular figure to drill boring holes having a regular N-polygonal cross sections while retaining the advantage of the turning operation. For boring a boring hole (H) with a cross-section... | 10/10/2006 |
| 6213232 | Drilling tool helical shank formed from a polygonal profile bar A drilling tool, in particular a rock drill, is proposed, which is formed from a drill head, a clamping shank and a helical shank which is located between them. In order to produce a cost-effective drilling tool, the initial material used is a polygonal p... | 04/10/2001 |
| 5743345 | Drill bit for reverse drilling A drill bit for reverse drilling in a drill hole being produced by a percussive, fluid-actuated drill includes an elongated drill bit body having a bore extending there through for transmission of a fluid, the body terminating in a head end portion and a ... | 04/28/1998 |
| 4844186 | Replaceable well drill bit A replaceable bit for cable drill tool stems including a leading longitudinal cutting rib and first and second lagging, flattened reaming portions. The cutting rib diametrically extends between and bisects the reaming portions which partially extend about... | 07/04/1989 |
| 4074778 | Square hole drill A square hole drill having a cutterhead configuration whose outline is in the form of a Reuleaux triangle and which also has a planetary gear drive. Two counter revolving motions are present in the drill at the same time. One is the pure rotary motion of ... | 02/21/1978 |
| 4071100 | Method of making holes of selected external configuration in preferably rock or ground formation, and a drilling machine for carrying out the method In a method of making holes of selective external configuration in a rock or earth formation, two or more rotatable drills provided with drill crowns are driven into the ground. The drill crowns are so arranged that they will touch each other or are radia... | 01/31/1978 |
| 4056154 | Squaring off and reaming tool for deep elongated trench excavations There is disclosed a tool for squaring off and reaming the walls of an elongated trench excavation which has been previously formed utilizing the slurry trench excavation method. The tool is constituted by a pair of spaced parallel steel beams which are c... | 11/01/1977 |
