Thomas Edison obtained a patent for an electrographic vote recorder.
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| Number | Title | Issue Date |
| 7117048 | Safety controller with safety response time monitoring A safety controller having a total worst case propagation delay, exceeding the required propagation delay required by a safety process, may be used to control the safety process by monitoring actual delays in signal processing in the safety controller and moving to ... | 10/03/2006 |
| 7104310 | Mold making machine with separated safety work zones An automatic molding machine has different operational molding stations in which at least two different safety zones are provided for the different molding stations. Such an automated machine includes a mold flask assembly including a drag flask, a cope flask and a ... | 09/12/2006 |
| 7028750 | Apparatus and method for horizontal casting and cutting of metal billets The invention relates to an apparatus for continuous casting of metal billets comprising a horizontal casting mold having and inlet end and an outlet end. It includes a feed trough for feeding molten metal to the mold inlet end and a horizontal conveyor for receivin... | 04/18/2006 |
| 7004229 | Method and apparatus for starting and stopping a horizontal casting machine An apparatus is described for starting and stopping a horizontal casting machine, e.g. a caster for continuous casting of metal ingots. The caster comprises a feed trough for carrying molten metal, at least one casting mould and a connecting trough separately connec... | 02/28/2006 |
| 5954115 | Molding toy for molding toy metal objects The toy uses metal molding material having a relatively low melting point which produces realistic toy metal objects. The metal is heated in a crucible and poured into a preferably closed, flexible mold made of rubber. The crucible and the mold are mounte... | 09/21/1999 |
| 5586597 | Method to prevent/mitigate steam explosions in casting pits Steam explosions can be prevented or mitigated during a metal casting process by the placement of a perforated flooring system in the casting pit. An upward flow of compressed gas through this perforated flooring system is introduced during the casting pr... | 12/24/1996 |
| 5105873 | Casting operation emergency shut-off apparatus The apparatus for manually interrupting the flow of molten metal from the tundish includes a frame, and elements for removably securing the frame to the tundish adjacent the tundish orifice. The apparatus further includes a plug assembly for blocking the ... | 04/21/1992 |
| 4982779 | Shut-off device for use in a guide conduit of a horizontal continuous casting apparatus The shut-off device includes (1) a stopper capable of blocking a stream of melt flowing in the guide conduit which introduces the melt from a furnace into a tundish therethrough, if the occasion arises, and (2) a receiving plate disposed below a cooling m... | 01/08/1991 |
| 4210196 | Die casting apparatus A die casting unit employing plural die members and core members which are used in closed position for die casting shaped articles of unusual configuration and particularly articles which are comprised of two or more subcomponents arranged or joined in in... | 07/01/1980 |
| 4180121 | Low pressure molten metal casting device A low-pressure molten metal casting device comprising a level detector or sensor disposed in a column disposed downstream of the smelting furnace and upstream of the casting leading inlet feed openings of a distribution chamber connected to the moulds. Th... | 12/25/1979 |
| 4077460 | Safety shield assembly for centrifugal casting apparatus The following specification describes a safety shield assembly for centrifugal casting apparatus of the type used by hobbyists. The assembly comprises a ring wall encircling the path of rotation of the casting arm carrying the metal charge and mold. A top... | 03/07/1978 |
| 4058155 | Portable centrifugal casting machine A spring action portable centrifugal casting machine having a castor arm freely pivotable at a centrally balanced point has a horizontal pivotable extension arm attached thereto, and a crucible and flask entirely enclosed within a portable shield mounted ... | 11/15/1977 |
| 3987841 | Continuous casting system A continuous casting system provides with a foreign matter receiving gutter between two adjacent rolls to receive foreign matters dropping during the drawing operation of castings, and a foreign matter removing nozzle to wash away the foreign matter dropp... | 10/26/1976 |
| 3933089 | Safety guard for press Safety apparatus for a press or the like having dies which are movable relative to each other and which define an open area therebetween for receiving an article includes a gate that is pivotable about a primary pivot axis from an open position to expose ... | 01/20/1976 |