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In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7066822 | Multidirectional amusement device A multidirectional amusement device is shown having a support structure extending above a support surface. A ride vehicle is secured to the support structure with support lines and is allowed to move freely beneath the support towers. A retraction tower receives a t... | 06/27/2006 |
| 5876176 | Stowage latch assembly for auger A stowage latch assembly for an auger includes a hopper for holding granular material and an auger barrel which is swingably movable in an auger-stowing path from a hopper-unloading position, where the auger barrel extends outwardly from the hopper, to an... | 03/02/1999 |
| 4830171 | Apparatus for providing a constant bobbin tube supply An apparatus for providing a constant supply of circulating textile bobbin tubes from a delivery conveyor of a textile winding machine to a return conveyor of a textile spinning machine. A reserve magazine containing textile bobbin tubes is combined with ... | 05/16/1989 |
| 4607740 | Mobile grain auger A mobile grain auger on a wheeled frame has a reaction member positioned to engage the ground between the axis of the wheels and the intake end of the auger casing, and a tilt adjustment mechanism connected between the reaction member and the frame to var... | 08/26/1986 |
| 4416366 | Emergency stop mechanism An emergency stop mechanism for a lifting device capable of moving a load along a predetermined path against and with the force of gravity using a winch-operated primary cable, and wherein the primary cable accomplishes a lifting function by pulling the l... | 11/22/1983 |
| 4391364 | Automatic latch for unloading auger A movable unloading auger is automatically latched and unlatched with respect to a support member by connecting a lifting winch and cable to a movable latch arm attached to the auger, thus advantageously permitting hands-off latching and unlatching operat... | 07/05/1983 |
| 4391363 | Automatic latch for unloading auger A movable unloading auger is automatically latched and unlatched with respect to a support member by connecting a lifting winch and cable to a movable latch arm attached to the auger, thus advantageously permitting hands-off latching and unlatching operat... | 07/05/1983 |
| 4390094 | Automatic latch for unloading auger A movable unloading auger is automatically latched and unlatched with respect to a support member by connecting a lifting winch and cable to a movable latch arm attached to the auger, thus advantageously permitting hands-off latching and unlatching operat... | 06/28/1983 |
| 4369871 | Elevator conveyor for tomatoes or the like An elevator conveyor for tomatoes or other fruits or vegetables, which must be carefully handled to prevent damage. The conveyor has an upwardly inclined main frame, which, at its lower or front end, has a dog leg portion disposed generally parallel to th... | 01/25/1983 |
| 4359207 | Emergency stop mechanism for the payload of a lifting mechanism An emergency stop mechanism for a lifting device capable of moving a load along a predetermined path against and with the force of gravity using a primary cable. The emergency stop mechanism includes a secondary cable or line functionally in parallel with... | 11/16/1982 |
| 4206839 | Safety lift apparatus for portable grain elevators and the like Lift apparatus is adapted for raising and lowering portable grain elevators and the like and includes both a power lift mechanism and an alternative manual lift mechanism. It also includes an upper limit stop for limiting the height to which the power lif... | 06/10/1980 |
| 4171040 | Side mover wheel for grain auger A side mover wheel for conveyors used during operation of the conveyor so that the conveyor can be moved laterally at the delivery end in a manner independent of the movement of the receiving end. The invention overcomes the problem of re-positioning a re... | 10/16/1979 |
| 4000805 | Safety stop for portable augers and like elevating machinery A portable farm type elevating auger is disclosed supported on a truck having lower hinged frames one of which is connected to adjacent the feed end of the auger and the other to a roller carriage which moves along a track longitudinally of the auger unde... | 01/04/1977 |
