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Thomas Edison obtained a patent for an electrographic vote recorder.
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| Number | Title | Issue Date |
| 7350693 | Indexing mechanism An indexing mechanism comprising a body (10) mounted so as to be rotatble about an axis; means (3) for rotating said body about said axis; first cam means (9, 10) for displacing said body along said axis away from an axial rest position during r... | 04/01/2008 |
| 5168146 | Bi-directional snap-action register display mechanism A bi-directional snap-action register mechanism for an odometer-type mechanical register display. The mechanism includes at least one register display wheel and a bi-directional cam mounted coaxially along a common shaft with the register display wheel. T... | 12/01/1992 |
| 5026973 | Number wheel counters A number wheel counter has a worm wheel connected with the least significant number wheel. A worm gear engaged with the worm wheel is mounted for both rotational and translational movement about a spindle. Cam means are provided such that as the worm gear... | 06/25/1991 |
| 4415801 | Printer countwheel mechanism A printer countwheel mechanism in a time stamp machine keeps a running count of the number of groups of documents stamped by automatically advancing a countwheel to the next highest number when all documents in the group have been stamped. A document grou... | 11/15/1983 |
| 4298791 | Scanning device for preselector counter mechanism Apparatus for scanning the relative position of a preselector counter mechanism which includes a plurality of digital discs having radial cams rotated in accordance with the setting of a preselected numerical value on the counter, with each of the radial ... | 11/03/1981 |
| 4044548 | Time indicating apparatus and transmission mechanism therefor A time clock is provided which includes a minute wheel that is advanced every minute and an hour wheel that must be advanced every hour, wherein a deflecting pawl device is utilized, in place of gears, to connect the wheels. Both wheels have ratchet teeth... | 08/30/1977 |
| 4022376 | Digital display mechanism A first rotating display means having indicia on its outer periphery, rotates within and in synchronization with a second rotating display means having indicia and a window on its outer periphery, the indicia for the first display means being visible thro... | 05/10/1977 |
| 4009373 | Electro-mechanical counting register A register designed to count and display cost on a gasoline dispensing pump. The register has a 100 cent wheel which is driven by a stepping motor. As the 100 cent wheel rotates it biases a spring which, after the 100 cent wheel has completed a revolution... | 02/22/1977 |
| 3931705 | Counter feed mechanism as used in digital clock The present invention relates to a counter feed mechanism as used in digital clock comprising a cam member adapted for advanced rotation and another cam member adapted for delayed rotation both arranged on a common axis so that the advanced rotation of th... | 01/13/1976 |
