Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 5762429 | Printing head structure of calculator having bold characters A printing head structure of calculator, including a belt type printing head the outer periphery of which is disposed with at least one group of fine characters and at least one group of coarse characters. The fine characters have the same symbols and num... | 06/09/1998 |
| 4878844 | Teaching aid having tactile feedback A set of characters is provided wherein each character is formed by arranging a number of relatively small like characters in a pattern that presents a filled-in outline of the character. Each of the small like characters are printed by a thermographic pr... | 11/07/1989 |
| 4793724 | Printing support and method for placing labels on a transparent record medium An improved printing support and method for use in a conventional dry lettering printing machine of the type having a print station, a rotatable printing support having print characters thereon, and means for causing the machine to execute a print cycle w... | 12/27/1988 |
| 4664543 | Device for monitoring and compensating for changes in the flight time of the print hammers of impact printers A device for monitoring and compensating for changes in the flight time of the print hammers of impact printers is disclosed. The flight time of the respectively monitored hammer is calculated from the elapsed time between the moment of firing of a hammer... | 05/12/1987 |
| 4596479 | Dot matrix printer The present invention relates to a dot matrix printer which makes use of multiple dot patterns distributed on the cylinder, belt, hand or drum of a line printer to provide an improved printing throughput for an all addressable line printer. In a dot-helix... | 06/24/1986 |
| 4492485 | Error correcting typewriter for simplified word obliteration Mechanisms are disclosed for modifying conventional single element and typebar typewriters, having character-for-character correction systems, with automatic backspacing or non-backspacing, and non-forward spacing, after obliteration, to provide an additi... | 01/08/1985 |
| 4390297 | Method and apparatus for correction of non-impact printing A method and apparatus for correction of non-impact printed material which is formed by depositing a thermoplastic marking material on the print sheet. The method and apparatus uses a correction tape or ribbon comprising a substrate which carries a pressu... | 06/28/1983 |
| 4360278 | Printing apparatus having interchangeable large character type fonts and tape-ribbon cartridge therefor A printing apparatus of the type having a printing station, a printing force exerting and resisting means, an image carrier and a font element with a raised character and a tape-ribbon cartridge therefor. The improvement of the present invention relates t... | 11/23/1982 |
| 4127064 | Large type rotary printer A large type printer which continuously drives annular printing wheels having circumferentially spaced printing facets on their peripheries. The driving mechanism is a friction drive which may be overriden. Thus, the apparatus includes means for monitorin... | 11/28/1978 |
| 4108557 | Error correcting typewriter An error correction system for a typewriter in which a silent type action with a blank type face is operatively connected and synchronized to initiate a backspace action and elevate and feed an error correction ribbon in advance of the striking of the bla... | 08/22/1978 |
| 3993179 | Justifying, text writing composing machine A desk top justifying text writing composing machine including automatic encoding and reading control means for operating a desk top justifying reproducing machine, or for operating larger and more sophisticated printing machines capable of automatic just... | 11/23/1976 |
| 3983814 | Reading type More easily readable matter is provided by intelligible characters which have spaced stroke components and a contrast space between the stroke components, the stroke components forming the intelligible character so that the width is at least about 20% gre... | 10/05/1976 |
| 3970186 | Damper for a composite print wheel A damper for a composite print wheel comprising two generally circular rings of an elastomer impregnated fabric material with a ring being adhesively coupled to each side of the beams of the print wheel and each ring being adhesively coupled to the other ... | 07/20/1976 |
