"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 5478052 | Carriage for guiding a tool along a specified path on a workpiece A carriage is disclosed for holding and guiding a tool along a specified path on a workpiece at a controlled, substantially constant speed. The carriage has at least one drive roller disposed on a bed with drive means for rotating the drive roller. A pair... | 12/26/1995 |
| 4747886 | Tube fin removal robot A robot drive for cutting fins having pipes extending on opposite sides therefrom, with the pipes laying in parallel spaced apart rows, comprises a carriage which can move in the longitudinal direction between rows of the pipes. A pair of driven guide rol... | 05/31/1988 |
| 4716271 | Apparatus for positioning a tool with respect to a cylindrical work piece An apparatus for circumferentially and longitudinally positioning a weld head or other tool with respect to the surface of a pipe. A first annular ring is affixed to the pipe. A longitudinally movable annular indexing track is also circumferentially fitte... | 12/29/1987 |
| 4448340 | Apparatus for replacing bolster rings The disclosure concerns a procedure for replacing a worn bolster ring on a freight car truck bolster which utilizes a motorized circle cutting and welding machine which rests upon the bolster and is centered by supporting structure positioned by locating ... | 05/15/1984 |
| 4346873 | Lead screw portable torch drive A portable torch support and guide having a torch mounting carriage advanceable along a track by a threaded member on the carriage in releasable engagement with a feed screw. Release of the bearing from the feed screw allows rapid return of the carriage.... | 08/31/1982 |
| 4312498 | Fixture for cutting tube turns A fixture for selectively positioning a tube turn for acetylene torch cutting thereof to a desired included angle includes means for supporting a tube turn of particular dimension and for selectively positioning the tube turn relative to a vertical or hor... | 01/26/1982 |
| 4285503 | Apparatus for steam generator tube wrapper spacer and support block removal A spacer and block cutting torch is lowered through the wrapper-to-shell annulus of a removed-top steam generator by addition of vertical sections of hollow-back column by vertical movement of a motorized carriage along a rack-and-guide track extending up... | 08/25/1981 |
| 4283043 | Cutting torch attachment A system for using a cutting torch for making accurate curved, straight and beveled cuts. A supporting and guiding device is attached to cutting torches, which may be of various sizes and shapes, and includes an elongated bar having a ring and opposed set... | 08/11/1981 |
| 4279405 | Device for making emergency exits in a crushed transport means A device comprises a gas cutter in the form of an annular combustion chamber (10) provided with injectors and manifolds for delivery of oxidant and fuel into the combustion chamber (10) and an annular nozzle (9) adapted to cut an escape hatch out of the i... | 07/21/1981 |
| 4238663 | Tube bundle cutting method and apparatus One or more pairs of vertically-spaced-apart sidewardly-aimable plasma arc cutting torches, the upper one angled upward and the bottom one downward, on the end of a horizontal boom movable longitudinally fore and aft and angularly sideward, are used to do... | 12/09/1980 |
| 4158315 | Track guided carriage unit A track guided carriage unit for selectively supporting a variety of work performing devices, tools and the like for movement along a predetermined working path, in which a supporting platform has spring loaded wheels that are releasably clamped by a manu... | 06/19/1979 |
| 4054179 | Stone and concrete cutting machine A stone and concrete cutting machine is described for performing cutting operations on stone or concrete surfaces. The machine includes an elongated base that is mountable to a stone or concrete surface through a bracket mechanism that is releasably recei... | 10/18/1977 |