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 |
| 7325623 | Rolling spike harrow The spike wheels of the harrow are arranged in gangs to rotate about a common axis during ground engagement. Each wheel has a plurality of spikes that project outwardly from a cylindrical hub having a pair of opposite ends. Projections at one end of the hub are mati... | 02/05/2008 |
| 7172032 | Ground engaging agricultural tine and associated mounting and indexing system An agricultural implement has gangs of soil aerator tools. Each gang includes a set of integral multi-tine units mounted on a frame for rotation in unison. Each tine unit has a hub with tines. The hub has a first surface defining a first set of indexing receivers an... | 02/06/2007 |
| 5715892 | Leveling harrow The harrow includes a series of sleeves each having a plurality of teeth and telescoped non-rotatably over a rod which is rotatably journaled by laterally spaced bearings supported by mounting arms which, in turn, are attached to a tool bar. The teeth rol... | 02/10/1998 |
| 5623998 | Bearing assembly for a leveling harrow A harrow includes a series of sleeves each having a plurality of teeth and telescoped non-rotatably over a rod which is rotatably journaled by laterally spaced bearing assemblies supported by mounting arms which, in turn, are attached to a tool bar. The b... | 04/29/1997 |
| 5201353 | Reconfigurable debarker head A debarker head for use in a rotary tree debarking machine has a drive shaft with a polygonal cross sectional shape and a plurality of substantially similar cutting elements with mounting apertures corresponding to the drive shaft shape and sized for slip... | 04/13/1993 |
| 4903780 | Mobile, self-propelled crushing machine A mobile, self-propelling crushing machine includes a structure essentially consisting of two beams, on which a central frame is welded. The central frame houses a rotor which is supported on a frame, which, in one form, is lowered by hydraulic cylinders ... | 02/27/1990 |
| 4611668 | Assembly for forming water retaining pockets and levelling the ground surface An assembly for attachment to a tractor having rotatable elements which will form water collecting and retaining pockets in the ground surface being traversed thereby preventing or reducing water erosion, wind erosion and retaining water for penetration i... | 09/16/1986 |
| 4364437 | Cultivating tool A cultivating tool propelled by a walking attendant has sheet metal tines mounted on a rotating axle for rotation therewith. The tines are channel-shaped with axle-accommodating apertures through the flanges and also through the webs. When the axle is eng... | 12/21/1982 |
