US Patent: 336,700
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| Ruler
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Patentee:
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| Frank A. Combes (exact or similar names) - Cleveland, Cuyahoga County, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 06, 1885 |
| Granted: |
Feb. 23, 1886 |
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Joel Havens
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Description: |
| Abstract:
This invention relates to that class of rules used for ruling lines in books or on paper with ruling-pens; and it consists of a straight strip of wood or metal having a ruling edge of peculiar formation, whereby a ledge is formed having a groove or space back of the downhanging edge, the object of which is to provide a means of preventing any ink which may attach to the said ruling-edge flowing down onto the paper.
Claim:
A ruler having a forward and downward projecting ledge at its ruling-edge. |
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