"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7188680 | Hydraulically adjustable hinged hitch An agricultural implement includes a pivoting assembly, a working assembly, and a tow bar assembly. The working assembly includes a front gang of coulters and a rear gang of coulters. The pivoting assembly includes a hydraulic cylinder. The hydraulic cylinder is adj... | 03/13/2007 |
| 7100703 | Golf green roller apparatus A golf green roller apparatus that can be hitched to a golf cart or any vehicle utilizing a clevis pin-type coupler. The roller is mounted on an articulated frame. A pair of wheels having tires thereon is also mounted on the frame. An easy-to-operate electric actuat... | 09/05/2006 |
| 6971225 | Control arrangement for a pull-type windrow merger A control arrangement is configured to remotely control operation of a windrow merger pulled by a tow vehicle. The windrow merger includes a plurality of functional systems or assemblies configured to selectively collect and discharge crop material, and that can be ... | 12/06/2005 |
| 6522964 | Control apparatus and control method for a construction machine A control apparatus and a control method for a construction machine make it possible to set an operation condition suitable for the working attachment by a simple operation with certainty, even if unique information of a working attachment cannot be input... | 02/18/2003 |
| 6460623 | Hydraulic system providing down force on a work implement A hydraulic system (20) for controlling the seed/fertilizer supply system (10) and the down pressure on a plurality of individual row units (12). A secondary supply arrangement (60) interconnects a first control circuit (26) of supply system (10) with a s... | 10/08/2002 |
| 6068063 | Hydraulic connection circuit between first and active hydraulic circuits A connection circuit for connecting a first and an active hydraulic circuit. The first circuit is a fan or motor on an air cart which uses a fixed amount of volume. The active circuit is for applying a down pressure on a pulled, ground--working implement.... | 05/30/2000 |
| 6041868 | Mechanism for controlling implement position A mechanism for controlling raised and lowered positions of a hitch-mounted implement includes a rotatable control knob coupled to a transducer, e.g., a potentiometer, for movement between first and second positions representing the raised and lowered pos... | 03/28/2000 |
| 5901791 | Working vehicle A working vehicle includes an engine in the rear of a passenger seat, and a working machine vertically movably disposed in the rear of the engine, wherein an upper end of the working machine which is lifted to the highest position is set lower than an upp... | 05/11/1999 |
| 5647440 | Forward-folding, winged, implement frame An improved frame for a drawn agricultural implement, such as a planter, includes a telescoping main frame. The main wheel set is mounted to a sliding carriage to support the central main frame, and may be moved between a forward and a rear position. As t... | 07/15/1997 |
| 5562165 | Hydraulic floating system for downpressure control of seeding tools A hydraulic downpressure system for use on no-tillage seeders allows for a constant downward force to be applied on seeding tools operating in highly variable soil surface conditions in order to keep a uniform seeding or planting depth. Raising and loweri... | 10/08/1996 |
| 5358055 | Partial width seeding attachment A partial width seeding attachment includes electronically controlled solenoids which activate hydraulic flow control valves connected to the hydraulic cylinders on respective implement sections. Switches in the tractor cab control the rockshaft of one or... | 10/25/1994 |
| 4066131 | Hitch assembly for garden tractor and independently operable ground tiller A hitch assembly for detachably connecting an independently operable rotary ground tiller to the rear of a garden tractor or other riding vehicle for towed operation therebehind. Remote tiller clutch and tilling depth controls are mounted on the tractor w... | 01/03/1978 |
| 3995411 | Oscillating mounting support for agricultural instrument A four point mounting system for a header type implement mounted on a support vehicle or tractor in which the lower support or push arms are solid and of a greater length than of the upper arms which are telescopic and provided with knuckle joints or dual... | 12/07/1976 |
| 3994349 | Apparatus for reclaiming strip-mined land Apparatus and method are provided for reclaiming strip mined land. The apparatus generally comprises a leading tractor and a trailing tractor and an elongated adjustable side casting blade angularly disposed between and connected to the tractors. Control ... | 11/30/1976 |
| 3941193 | Ground tilling apparatus Disclosed is a tilling apparatus characterized by a regulating drive connection between the towing tractor drive axle and the tiller shaft, the tiller tines having a modified arcuate configuration which provide a pocketed, rather than a furrowed or channe... | 03/02/1976 |