"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 |
| 6655862 | Method for printing on transparent substrate in order to optimize later markability This invention relates to the printing of transparent media often used for later projection, commonly referred to as Over Head Transparencies, or OHT's. These OHTs are used in several ways: They can be printed in advance and projected in sequence, created... | 12/02/2003 |
| 5039232 | Office machine including a multicolor plotting mechanism A typewriter includes a carriage arranged for reciprocating travel, a receiving arrangement mounted on the carriage, a drive arrangement mounted on the carriage, and a ribbon cartridge receivable in and removable from the receiving arrangement and operati... | 08/13/1991 |
| 4861174 | Device for driving print member of printer A device for activating the pen of a printer comprises a push member and for pushing the pen toward the platen of the printer, a connecting lever secured to the push member, a driving lever for imparting a driving motion to the push member via the connect... | 08/29/1989 |
| 4856919 | Pen printer A pen printer for converting data into printed form on a print sheet placed on a platen. The pen printer comprises a plurality of ink pens and a pen carriage mounted for reciprocating movement above the platen. The pen carriage has a device for removably ... | 08/15/1989 |
| 4842427 | Plotting mechanism mounted on a ribbon cassette for typewriters or office machines A plotting device for typewriters or office machines of similar construction which comprises a motor driven carriage; a record carrier; a print head; a ribbon in a cassette; a reversible, controllable drive motor for moving the record carrier up and down;... | 06/27/1989 |
| 4832512 | Plotting machine The structural base unit of the machine is made of a one-piece shaped beam (40) which extends along a first direction (Y) with a first portion (41) which, due to its own stiffness, supports and guides the carriage (12) carrying the writing head (11) along... | 05/23/1989 |
| 4813796 | Ribbon cassette having line forming means for typewriters or office machines of similar construction Several line drawing devices to permit drawing horizontal and vertical lines on typewriters are known. The fact that they are rarely encountered in practice, should be sufficient proof that they were not found to be satisfactory and greatly impede the typ... | 03/21/1989 |
| 4758102 | Pen-recording apparatus capable of erasing written characters A recording device capable of writing a character on a sheet of paper with a writing ball-point pen according to a set of character pattern data which is stored in a pattern memory, and erasing a written character with an erasing ball-point pen with relia... | 07/19/1988 |
| 4734707 | Recorder with display indicating a symbol for text and graphical data A recording apparatus capable of recording characters and graphical representations, having a display which is adapted to display a special symbol together with the characters, so that the special symbol indicate the position of a graphical representation... | 03/29/1988 |
| 4733248 | Apparatus for recording graphical representations with checking of the recording area A recording apparatus capable of recording a graph according to graphic pattern data representative of a pattern of the graph, and graph data representative of values to be presented in the graph. The apparatus includes a control device for effecting and ... | 03/22/1988 |
| 4728964 | Recording apparatus with an indicator for indicating current recording conditions A recording apparatus having character keys, and selector keys for selecting one of a plurality of recording modes for each of at least two recording conditions selected from a plurality of conditions such as a recording direction, a character size, a rec... | 03/01/1988 |
| 4683480 | X-Y plotter drive roller arrangement An X-Y plotter disclosed is of the type which moves a recording paper with no perforation by drive rollers and pinch rollers. A plurality of sharp projections are arranged on the outer surface of each of the drive rollers such as to enable an exact feedin... | 07/28/1987 |
| 4682902 | Writing plotting apparatus with keyboard A writing-plotting apparatus comprising a keyboard including a mode selector for selecting a writing or plotting mode, a carriage carrying a pen movably toward and away from a sheet of paper, a first memory for storing character pattern data representativ... | 07/28/1987 |
| 4668963 | Pen recorder A pen recorder for writing characters and graphic patterns with recording pens on a sheet of recording paper by moving the recording pens in an X-axis direction and moving the sheet of recording paper in a Y-axis direction. When a desired key on a keyboar... | 05/26/1987 |
| 4644367 | Recording pen apparatus A recording apparatus for recording graphs or other graphical representations, with relative movements between a writing instrument on a carriage which is moved by a carriage drive unit, and a sheet of paper which is fed by a paper feed unit in opposite d... | 02/17/1987 |
| 4642779 | Writing-plotting apparatus with keyboard A writing-plotting apparatus with a keyboard capable of writing characters in a writing mode, and plotting graphs in a plotting mode, comprising a carriage carrying a writing instrument such a ball-point pen movable toward and away from a sheet of paper, ... | 02/10/1987 |
| 4627753 | Daisy-wheel type printing system with multiple functions A printer is provided with carriage having a daisy print wheel supporting type elements at the external circumferential edges of respective spokes that make up the wheel. The printer sequentially performs a printing operation by causing its carriage to mo... | 12/09/1986 |
| 4627748 | Writing-plotting apparatus with keyboard A recording apparatus for writing characters in a writing mode and plotting graphs in a plotting mode, with a writing instrument supported on a reciprocating carriage, based on input data through a keyboard which is operable in a first mode in which at le... | 12/09/1986 |
| 4607265 | Pen-recording apparatus A pen-recording apparatus capable of recording not only regular letters, but also special letters each of which consists of the regular letters slightly shifted relative to each other. The apparatus comprises a platen supported rotatably to hold a sheet o... | 08/19/1986 |
| 4577982 | Recording apparatus A recording apparatus for recording on a recording paper characters and symbols as well as graphs based on pattern data stored in memories by actuating keys of a keyboard section. The recording of a character or symbol is effected by moving a writing inst... | 03/25/1986 |
| 4576490 | Multihead serial printer The present invention relates to a multihead serial printer comprising a plurality of printing heads mounted on different carriages and having a high-speed printing mode in which a plurality of printing heads print different letters and a high-density pri... | 03/18/1986 |
| 4577206 | Pen recording apparatus A pen recording apparatus provided with a plurality of ball point pens of different colors, and a pen section mechanism for selecting a suitable ball point pen for writing characters, symbols, etc., and drawing graphs. The recording apparatus can be switc... | 03/18/1986 |
| 4572679 | Slaved ramp voltage generator for a calligraphic character printer The slaved ramp voltage generator disclosed herein facilitates the writing of characters by a servo controlled stylus carried on a moving carriage. The carriage is driven at a selectable speed and the drive system generates pulse signals at a rate which i... | 02/25/1986 |
| 4559706 | Apparatus for forming moon characters for the visually handicapped The machine 10 may be used to emboss characters of embossed script, and comprises a paper support 12 and an escapement mechanism 20 from a typewriter. Embossable paper is fed from around a roller 22 to a position between an embossing stylus 14 and a resil... | 12/24/1985 |
| 4560996 | Pen recorder A pen recorder comprising a pen which is adapted to be placed in contact with a recording paper, a return spring which is capable of energizing a pen so that it is separated from the recording paper and a push-out means which pushes the pen so that it can... | 12/24/1985 |
| 4532521 | Recording apparatus A recording apparatus comprising a paper feed device for feeding a recording paper in forward and reverse directions; a carriage for supporting a writing tool and being movable perpendicularly to the feed direction of the paper; a carriage drive device fo... | 07/30/1985 |
| 4527918 | Apparatus for both printing characters and plotting graphs A printing apparatus having a first printing unit provided with a plurality of type elements and adapted to print characters and symbols and a second printing unit capable of plotting optionally, graphs and figures, and capable of attaining both high qual... | 07/09/1985 |
| 4527174 | Sheet pressing mechanism in a pen type recording device A sheet pressing mechanism in a pen type recording device including a rotatable platen and a pen adapted to move in the axial direction of the platen while contacting the platen, in which pressure rollers are brought into contact with outer peripheral sur... | 07/02/1985 |
| 4523865 | Marking and engraving machine A marking machine for marking and engraving upon a work surface. The machine comprises a rotary marking wheel having marking characters upon the periphery of the wheel and an engraving tool or stylus. The engraving tool may be employed as part of the prin... | 06/18/1985 |
| 4511905 | Stylus recorder linearized drive system In the calligraphic printing apparatus disclosed herein, a writing stylus is carried by a flexing suspension including a pair of generally orthogonal arms, each arm being driven by a respective servo system which responds to stored data representing chara... | 04/16/1985 |
| 4441109 | Pen type recording device Disclosed is a pen type recording device for performing recording by relative movements of pen means and recording paper in the state where the tip end of a pen is brought into contact with the recording paper, which comprises a pen holding member for hol... | 04/03/1984 |
| 4422781 | Printing apparatus and method variable velocity on-the fly printing A method and apparatus for controlling the velocity of a carriage in a calligraphic type printing apparatus maximizes average velocity across the printing line. The method and apparatus, based upon the present carriage velocity and the maximum future carr... | 12/27/1983 |
| 4259025 | Impact printer with plotting capability An impact printer, for example, of the daisy wheel type with plotting capability is provided by utilizing a cartridge which instead of an inked ribbon has a marking pen mounted through the cross-section of the cartridge and is selectively engageable again... | 03/31/1981 |
| 4254552 | Inscribing system An inscribing system that is electronically automated for transcribing onto miniature carriers character information which will positively identify the human, animal or valuable article in which the carrier is embedded. The automated inscribing system inc... | 03/10/1981 |
| 4150902 | Electronic printer having a single tracing element for tracing out alphanumeric characters The printer is provided with a single tracing element for tracing characters under the control of stored digital instructions corresponding to a set of segments of the character. The tracing element is moved on the printing surface according to a pair of ... | 04/24/1979 |
| 4003459 | Writing machines A key operated manual writing machine including a writing instrument which inscribes letters on the paper, the instrument being controlled by pairs of cams, each pair coupled to one of the manual keys. The two cams control movements of the pen or instrume... | 01/18/1977 |