Geometrical instruments – Miscellaneous – Light direction
Patent
1981-02-17
1988-03-15
Little, Willis
Geometrical instruments
Miscellaneous
Light direction
33 1B, 33562, G01C 300
Patent
active
047303980
ABSTRACT:
A preplanned system entitled "preliminary recording activity by guide and point" is a topmost sheet and also a perforating point for perforating the said topmost sheet and going onto an underlying sheet to process, symbolize, chart, map, layout, draw, write, and record on the said underlying sheet; this system invention has replaced scale and ruler with detachable, disposable said topmost sheet, said perforating point and straight edge; this invention has also brought the rough, repliminary recording phase closer to and has substituted part of the activity for finishing the processed said underlying sheet and thereby also replaced all previously used marks and their removal for all correct activity on the said underlying sheet transferring all these temporarily used marks onto the detachable, disposable said topmost sheet for a cleaner processed and quickly finished said underlying sheet; the novelty is the positioning, perforation point hole indicators made by the said perforating point through the said topmost sheet on which the preliminary activity is accomplished and onto, into, and through the recording said underlying sheet, whatever required, for whatever recording is desired by the user of the said topmost sheet, the said perforating point, and their accompanying activity; the processed substrate is then finished with whatever means is required having the said system means having a function for having information flow from said topmost sheet to the said underlying sheet.
REFERENCES:
patent: 464359 (1891-12-01), Hagan
patent: 1965337 (1934-07-01), Geyer
patent: 3660903 (1972-05-01), Caperton, Jr.
patent: 3771231 (1973-11-01), Kemp
patent: 3795053 (1974-03-01), Burke
patent: 4171573 (1979-10-01), Picciotto
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