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 |
| 5865370 | Rail fastening system for fastening a rail to a rail support and assembly including such rail fastening system coupled to the rail support A rail fastening system for fastening a rail to a rail support includes a frame member supported by the rail support and including an upper bracing portion positioned above the rail support to define therebetween a space. A stationary insulator member is ... | 02/02/1999 |
| 5344072 | Rail anchorage arrangement with adjustable eccentric cam An adjustable rail anchorage arrangement comprises: a support surface (24) for supporting a rail (26). A platform base (4) is fast with this support surface and a boss (9) is upstanding from the platform base. A passageway in the boss captively receives a... | 09/06/1994 |
| 5221044 | Rail fastening system with gage adjustment means There is disclosed a rail fastening system for wood or concrete ties having provisions for rail gage adjustment and including a pair of shoulders removably secured to a railway tie plate or a shoulder retaining in a concrete tie with provisions for latera... | 06/22/1993 |
| 5158414 | Rail attaching device permitting longitudinal rail displacement A rail attachment device which allows for longitudinal displacement of a rail. The rail attachment device includes a first element fixedly supported to a ribbed plate and having a vertical arm extending essentially parallel to the longitudinal direction o... | 10/27/1992 |
| 5022584 | Rail-fastening for rails A rail fastener for fastening rails to a support structure, particularly adapted for use in switches, crossovers, frogs and the like where a track plate must support a pair of closely spaced or nonparallel rails. The rail fastening includes a rigid track ... | 06/11/1991 |
| 4988040 | Device for securing a rail to a sleeper This invention relates to a device for securing a rail to a railroad tie, and wherein a base plate is provided with guide ribs for abutting the rail foot. The base plate is secured to the tie and the guide ribs provide anchorage openings wherein anchors m... | 01/29/1991 |
| 4981264 | Device for fixing stock rails in railway switches as well as process for fixing stock rails by means of such device In a device for fixing stock rails (1) in railway switches, including a base plate (2) for the stock rail (1) and a sliding chair (3) for the switch tongue mounted on the base plate and comprising an elongated spring element (6) for pressing down the rail... | 01/01/1991 |
| 4967954 | Rail fastening device An adjustable rail seating and fastening device that maintains and adjusts gauge of a rail and secures a rail to a rail support or tie plate, positively engages the rail support at both ends of the device, and provides a biasing element to maintain the en... | 11/06/1990 |
| 4946099 | Sleeper construction A concrete sleeper has an elongate metal insert having a T-slot containing a T-head of a retaining block which bears against a rail foot to retain rail gauge. The retaining block can be rotated by 180° and slid along the T-slot to abut an edge of the foo... | 08/07/1990 |
| 4889282 | Rail clip assembly The present application describes a rail clip assembly, particularly but not exclusively for securing a crane rail to a flanged girder. The assembly comprises a first part adapted to be attached to the rail support surface adjacent the rail, a second part... | 12/26/1989 |
| 4832261 | Railway rail fastening assembly A compact, low profile, boltless, two piece railway rail fastening assembly for secring a railway to a conventional tie plate having spike holes enabling the tie plate to be affixed to a wooden cross tie. The assembly includes a drive-on, generally platel... | 05/23/1989 |
| 4802624 | Rail clip assembly having a pivoted wedge member The present application describes a rail clip assembly, particularly but not exclusively for securing a crane rail to a flanged girder. The rail clip assembly comprises a body member (1) which has a base portion (2) for connection a rail support surface (... | 02/07/1989 |
| 4632308 | Adjustable rail fastener assembly A rail fastener assembly includes a rail seat laterally shiftable incrementally to properly position a supported rail. Anchoring of the seat to an underlying foundation is achieved by a clamp ring surrounding the periphery of the seat and including a plur... | 12/30/1986 |
| 4193544 | Rail clip assemblies A rail clip assembly for securing for example a crane rail to a girder, comprises a first part to be securely attached, e.g. by welding or bolting, to the planar surface of the girder adjacent the rail, and a second part to be fixed to the first part inde... | 03/18/1980 |