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| Number | Title | Issue Date |
| 7204028 | Perspective view drafting device A drafting device creating perspective views from horizontal base lines with remote horizontal vanishing points and with a remote skyline vanishing point. The drafting device includes articulated arm assemblies on opposite sides of the board. Each arm assembly inclu... | 04/17/2007 |
| 7076881 | Device for measuring and teaching scales of units A teaching device for teaching students different scales of measure and aiding in the taking of accurate measurements by users of the device includes a first face that is marked with standard units of measure such as feet, inches, and fractions of inches. Each scale... | 07/18/2006 |
| 6718737 | Method of and apparatus for automatically packaging encased product An automatic packaging apparatus has an arraying and supplying station, a sorting station and a packaging station. The arraying and supplying station forcibly arrays and supplies encased products to orient their caps in one direction. The sorting station selectively... | 04/13/2004 |
| 6360448 | System for laying out an installation of components and method of use The present invention relates to a construction tool for laying out components of a structure. The system comprises a length of tape comprising a first calibrated edge and a second calibrated edge separated by a width sufficient in size so that said first... | 03/26/2002 |
| 5632094 | Articulated drafting device for drawing perspectives A portable drafting device and learning tool for laying out perspective drawing lines to enhance the realism of standard 30 degree base line isometric drawings and other similar drawings with different base line angles. The device comprises a rectangular ... | 05/27/1997 |
| 5077904 | Drafting apparatus A drafting apparatus comprising a drawing board having at least two opposite, parallel sides, and arcuate guide means, detachably coupled to the at least two opposite, parallel sides, for guiding a straight edge along a radial path during formation of rad... | 01/07/1992 |
| 4899454 | Perspective drawing machine A drafting table includes vertical and horizontal straight edged supports together with drive mechanisms for moving the vertical straight edge such that it will always point to a viewing point and for moving the horizontal straight edges in plural differe... | 02/13/1990 |
| 4565016 | Perspective drafting instrument A drafting instrument (14) is provided for drawing perspective lines without physically preestablishing and marking a vanishing point. A carriage (16) and drawing blade (18) are supported on roller means (20) for movement along a drawing surface. Control ... | 01/21/1986 |
| 4492031 | Vernier device of the digital display type for a universal parallel ruler A vernier device of the digital display type for a universal parallel ruler is disclosed comprising a slit protractor having slits arranged at the same visually readable protractor and a intervals as those intervals for the protractor graduations, the sli... | 01/08/1985 |
| 4430797 | Plotting device A plotting device is disclosed containing a traveling carriage drawing apparatus and distance measuring devices in the traveling carriages which emit a number of electrical pulses which are proportional to the displacement of the traveling carriages and w... | 02/14/1984 |
| 4419823 | Programmable braking device There is indicated a programmable braking device for the X guide block (18) and the Y guide block (30) of a drafting machine which comprises a brake band (42, 60) which is moved together with the considered guide block. The band revolves around guide pull... | 12/13/1983 |
| 4367589 | Drafting machine head A drafting machine head in accordance with this invention is provided with a rotatable drawing ruler carrier whose angular position on a graduated circle is incrementally detected by means of scanning elements and is converted into displayable angular val... | 01/11/1983 |
| 4357757 | Perspective drawing machine This invention relates to a perspective drawing machine and more particularly, to a machine which will keep track of a chosen vanishing point. This invention describes a mechanical machine in which the corrected voltage is computed on an external calculat... | 11/09/1982 |
| 4254555 | Perspective view apparatus The disclosed device is a combination of horizontally and vertically guided members which form an input area and an output area so that perspective views of objects in the input area are created in the output area by the projections of the visible points ... | 03/10/1981 |
| 4233751 | Universal parallel ruler for three-dimensional drawing A universal parallel ruler is disclosed. The head of the ruler includes preset stoppers which are adjustably positioned according the three axes of the three-dimensional drawing. There are three stoppers. One is stationary, and two are adjustable. The sca... | 11/18/1980 |
| 4206551 | Universal parallel ruler for three-dimensional drawing A Universal parallel ruler for use with three-dimensional drawings is disclosed which utilizes a pair of perpendicular scales individually secured to a mounting plate which is connected to a head portion. The head portion contains a plurality of preset st... | 06/10/1980 |
| 4117599 | Apparatus for drafting inaccurate conic perspective The apparatus for drafting in accurate conic perspective essentially provs for the top edge of a drawing board a movable cursor integral by means of an arm with a pivot and carrying at the other end a scale G3. Another scale G1 is slidably mounted on a g... | 10/03/1978 |
| 4075762 | Instrument for making perspective drawing An instrument adapted for making perspective drawing, comprising a slider on a base plate and a link pivoted to two levers of exactly equal lengths between pivot centers and at equal distances on the slider and the link. The arrangement further includes a... | 02/28/1978 |
