...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7040079 | Rake with four-wheel stabilizing system A rake has two side members attached perpendicularly to the rake so as to form an H-shaped frame system. A swivelable wheel is mounted at each corner of the frame. The frame fully stabilizes the rake in a position approximately level with a ground surface as the rak... | 05/09/2006 |
| 7028459 | Triple windrowing method and apparatus A harvester suitable for triple windrowing operations has a cross-conveyor located behind the harvesting header for intercepting a stream of severed materials projected rearwardly from the header as the machine moves through the field. The cross-conveyor may be main... | 04/18/2006 |
| 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 |
| 6931826 | Dual drive material turning machine and method A machine for turning material piled on the ground in a windrow comprises first and second track assemblies spaced apart from one another and having a lift assembly therebetween. The lift assembly lifts the material upwardly and deposits it to the rear. The first an... | 08/23/2005 |
| 6715274 | Accelerator roller for windrow merger A towable windrow merger including a pickup head for raising the crop material form the ground surface and a transverse conveyor assembly for laterally displacing the crop material. The transverse conveyor assembly includes an accelerator roller system, supported by... | 04/06/2004 |
| 6662541 | Square drive and pine straw rake apparatus and system A pine straw rake apparatus and system, and a square drive for the pine straw rake. Typically, the square drive includes three sprockets, one larger than the other two in a triangular and planar arrangement, and a roller chain wrapped around the partial c... | 12/16/2003 |
| 6354429 | Agricultural crop material windrow inverting method and apparatus An apparatus for inverting a windrow of agricultural crop material on the ground as the apparatus moves along the windrow in a first direction has a lifting mechanism for lifting the crop material from the ground substantially without destroying the integ... | 03/12/2002 |
| 5412929 | Steerable tandem implement hitch The present invention teaches a novel steering apparatus which functions in conjunction with the tandem rake offset mechanism. The rear rake may be offset either left or right, thus permitting single or double windrowing, and also transmits steering comma... | 05/09/1995 |
| 5396756 | Agricultural rake There is provided an agricultural rake which comprises a frame having front rear sections angled with respect to one another. A plurality of angled rake wheels are mounted on the rear section of the frame. The rake wheels are characterized by having a plu... | 03/14/1995 |
| 5301496 | Inverter extension position lock A position locking mechanism for a windrow inverter having a wing draper attachment mounted on the frame of the windrow inverter on the opposing side of the transverse cross conveyor from the discharge chute and being manually movable between a horizontal... | 04/12/1994 |
| 4926625 | Windrow turning apparatus The present invention relates to an apparatus for inverting a windrow of hay or the like. The apparatus is in the form of an implement to be drawn by a tractor or any other appropriate vehicle and comprises a carriage supported at the front by skids and o... | 05/22/1990 |
| 4910951 | Windrow merger An apparatus for merging a pair of windows into a single window for subsequent processing by a forage harvester, square baler or the like. The apparatus includes a main frame, a rotary pickup head for picking up the first windrow, a cross conveyor mounted... | 03/27/1990 |
| 4777788 | Windrow turning apparatus The present invention relates to an apparatus for inverting a windrow of hay or the like. The apparatus is in the form of an implement to be drawn by a tractor or any other appropriate vehicle and comprises a wheeled carriage on which is mounted a pick-up... | 10/18/1988 |
| 4768333 | Farm machinery for laterally moving and turning over windrows of hay This invention relates to a farm machine having a device (2) for picking up hay on the ground and a device (3) for moving the hay laterally and turning it over. The device (3) for moving and turning over the hay includes a flexible belt (21) equipped with... | 09/06/1988 |
| 4748803 | Windrow turner discharge chute A discharge chute for use on a window turner having a pickup mechanism for elevating a windrow of crop material off the ground and a cross conveyor for receiving the elevated windrow and conveying the windrow laterally of the direction of travel as disclo... | 06/07/1988 |
| 4738092 | Windrow inverter and shifter An apparatus selectively operable either to invert and laterally displace the windrow from its original position or merely to laterally displace the windrow without effecting an inversion thereof is disclosed wherein a first discharge chute can be utilize... | 04/19/1988 |
| 4730447 | Apparatus for turning a windrow of crop material An apparatus for laterally displacing and inverting a windrow of crop material is disclosed wherein a pickup engages a windrow of crop material along a first path and elevates the windrow into a table where it is conveyed in a semi-circular path by a hori... | 03/15/1988 |
| 4574569 | Raking apparatus An apparatus for displacing material lying on the ground transversely to the direction of travel, in particular a raking apparatus for mown crops, such as hay, comprising at least two endless draw members operative in upright planes oriented transversely ... | 03/11/1986 |
| 4300337 | Power operated brush rake A rake for attachment to a tractor and operation by the tractor hydraulic system. Rake tines are carried on an endless chain by pivotally mounted brackets along upper and lower runs with counterbalance means providing pivotal movement of the tines between... | 11/17/1981 |
| 4203277 | Forkless haymaking machine A haymaking machine comprising drums rotating about substantially vertical axes and driving thin flexible skirt-like elements of rubber or the like with or without stiffeners or control devices. The skirt-like elements may be attached to the drums or to a... | 05/20/1980 |
| 4185447 | Hay conveying belt and hay rake A combination hay conveying belt and working element is provided which comprises a belt made primarily of elastomeric material and having an inner compression section, a load-carrying section and an outer tension section, the tension section having groove... | 01/29/1980 |
| 4040490 | Rock windrower An elongated frame is provided including front and rear ends. The rear end portion of the frame includes rear wheeled transverse axle structure supported from the frame for adjustable angular displacement in a horizontal plane relative to the frame. The f... | 08/09/1977 |