"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 |
| 7327109 | Adjustable bridge for acoustic stringed instruments A bridge for providing adjustable active string length on acoustic stringed musical instruments comprised of a concavity surrounding a plurality of individually adjustable saddles that are arranged individually and independently to support each string and be freely ... | 02/05/2008 |
| 7104737 | Pipe beveling tool and method A hand-held pipe beveling tool makes the job of manually beveling the ends of plastic pipe very simple and easy to perform. The pipe beveling tool includes a frame that defines an opening for receiving the end of a pipe. One or more pipe forming members are coupled ... | 09/12/2006 |
| 5655583 | Tenonizer apparatus and staircase method A tenonizer apparatus has a motor and a circular cutting blade assembly mounted on a pivotable platform. A radius shoulder support shaft is pivotably mounted perpendicular to the circular cutting blade. The operator pushes and rotates the log along the sh... | 08/12/1997 |
| 5597023 | Table saw tenonizer jig The present invention consists of a main frame that mounts atop a table saw. An axis shaft on a rocker assembly holds a wooden workpiece which is rotated and lowered into the circular cutting blade. Either a radius or square shoulder tenon can be cut depe... | 01/28/1997 |
| 5020401 | Universal plastic-pipe tool A universal tool for inspecting and processing plastic pipe includes a cylindrical chamfering element with a cylindrical wall and a pipe-receiving opening therein terminating in a base ring, the base ring carrying a tapered pin having an axis parallel to ... | 06/04/1991 |
| 4691600 | Pipe shaver A pipe shaver having an elongated mandrel and a plurality of cutting tools is used to shave the outer surface of a predetermined length of a pipe. The mandrel is secured to a cup-shaped body having a plurality of lugs for carrying circular cutting tools. ... | 09/08/1987 |
| 4674926 | Method and apparatus for performing remotely-manipulated work on a conduit of a nuclear facility The invention is directed to a method and apparatus for performing remotemanipulated work on a conduit of a nuclear facility. The method of the invention is for maintaining pipe conduits in a radioactively contaminated cell such as a large-area cell of a... | 06/23/1987 |
| 4625601 | Pipe lathe A pipe lathe is disclosed for performing work on the end of a pipe. An arbor assembly having an arbor shaft is inserted in the end of the pipe. A hub having a frame is positioned on the arbor. An arm from the frame carries a cutter holder. The arm project... | 12/02/1986 |
| 4614463 | Cutter having removable cutting blades A cutter body has a plurality of detachable blades mounted in a cutter body plate which extends into a hub that is mounted on a power shaft. Each blade comprises an upper blade edge and a lower blade edge held in place by a block which is removably retain... | 09/30/1986 |
| 4601222 | Tool head assembly A tool head assembly for use in preparing a tube for welding including a center pilot which is rotatable. The center pilot is adapted to enter a bore of a tube to center the tool head assembly by being provided with ball bearings which rotate around the i... | 07/22/1986 |
| 4586408 | Plastic pipe chamfering tool A tool for chamfering the ends of plastic pipe of various diameters comprising a main body having various concentric circular grooves of different diameters which are shaped and sized to receive the square-cut ends of standard size plastic pipe. Each circ... | 05/06/1986 |
| 4455726 | Chamfering apparatus for end faces of tubular members A chamfering apparatus for opposing end faces of a tubular member. The apparatus includes an abutment member capable of advancing toward or being retracted from a line of extension of the longitudinal axis of the tubular material so as to collide with the... | 06/26/1984 |
| 4365528 | Portable lathe A portable lathe (10) for machining precise conical surfaces on a fixed workpiece (42) using rotating inclined cutter bits (38) driven by air motors (16, 18) through drive shafts (64, 66), worm gears (68, 70), a ring gear (60) and a carrier shaft (52) tha... | 12/28/1982 |
| 4339836 | Lead screw threading assembly The present invention relates to a lead screw threading tool utilized to form external threads on the upper end of a cylindrical shroud of a shock absorber assembly of a vehicular suspension system. The tool includes an expandable collet which is inserted... | 07/20/1982 |
| 4257289 | Portable pipe end bevelling tool A metal pipe bevelling tool has a shaft with a forward end portion on which is mounted a mandrel with movable jaws engageable with the inside of a pipe end to hold the shaft coaxial with the pipe. A tool hub is rotatably supported by a rearward end portio... | 03/24/1981 |
| 4149436 | Machine for facing seal faces of pipes Apparatus for machining the seal faces of drill pipes having an adapter which screws onto a drill pipe, the adapter carrying a spindle non-rotatably supporting a sleeve which in turn supports a rotary tool head having a radially movable tool for facing th... | 04/17/1979 |
| 4126065 | Pipe end finishing apparatus Apparatus for finishing the ends of pipes, particularly for shaping the ends of pipes preparatory to welding the pipes together end-to-end, wherein the cutting tool or tools employed to finish the pipe end are urged against the pipe end hydraulically, and... | 11/21/1978 |
| 4114484 | Pipe cutting or end prepping apparatus A pipe cutting or end prepping device capable of use in severely restricted spaces to cut through or shape for welding a hollow cylindrical pipe wall, which includes a rotatable tool bit support or carriage assembly adapted for insertion through an end of... | 09/19/1978 |
| 4101240 | Nozzle refacing tool A refacing tool by which the spaced seating surfaces of an oxy-acetylene cutting torch nozzle can be refaced. The tool includes a main body member from which there extends a plurality of support members. The support members are affixed to the main body an... | 07/18/1978 |
| 4033229 | Tool for enlarging the bore in a workpiece For enlarging the bore in a workpiece, the present invention provides a collar that can be secured to the workpiece with a plate rotatably mounted on the collar. A handle supports a housing in which a cutting tool is rotatably positioned. The cutting tool... | 07/05/1977 |
| 4017201 | Means for renovating worn cylindrical bearing surfaces A cutting head adapted to be manually operated is positioned in relation to a worn bearing so that when the cutting head is rotated with pressure applied in the axial direction against the bearing. The head advances axially along the bearing while rotatin... | 04/12/1977 |
| 3999452 | Tool for preparing tube ends for welding A tool for preparing tube ends for welding comprising a rotary tool head connected to the drive shaft of an air motor driven angle drive unit, said tool head having a plurality of radially extending arms provided with inclined cutting edges operative, upo... | 12/28/1976 |