Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 4817729 | Hinged cultivator frame The present invention relates to a cultivator having a frame which includes at last one line of hinges with axes transversely disposed to the direction of draft of the cultivator. The portion of the cultivator frame ahead of the front row of hinges is kno... | 04/04/1989 |
| 4426940 | Implements for injecting substances below the surface of the soil A machine for burying slurry, sewage, or other soil-improving fluids has a hollow straight forward-leaning tine which carries at its bottom end an arched, forward-sloping delta-shaped shoe for lifting the soil into the form of a tunnel. The hollow interio... | 01/24/1984 |
| 4271913 | Articulated plow with horizontal angularity between its frames The horizontal diagonal angle (z) of the rear frame (16) of an articulated plow (11) is greater than the horizontal diagonal angle (y) of the front frame (14), thus providing a lead angle (x) between the frames (14, 16). This construction reduces the over... | 06/09/1981 |
| 4266618 | Articulated plow with central support providing counter moment for rear section An articulated plow has a front section 12 supported at its front end by a ground engaging furrow wheel 19, a rear section 13 supported at its rear end by a ground engaging furrow wheel 22, pivot joints 32, 33 interconnecting the diagonally disposed frame... | 05/12/1981 |
| 4121852 | Releasably retained hinged plow A moldboard plow that is made in two sections which are hinged together about a horizontal pivot axis, so that the rear section of the plow can pivot about this horizontal axis relative to the front section to permit the plow to follow ground contours. Su... | 10/24/1978 |
| 4036306 | Multi-unit adjustable plow pulled by vehicle and having steering wheel turnable only on adjustment of plow The plow system may carry as many as 10 or 14 individual plow units. All of the units are connected together by a tie rod and may be pivoted in unison relative to a main frame. By pivoting the units, they may be opened or closed to adjust the width of cut... | 07/19/1977 |
