US Patent: 1,236,486
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| Rafter Miter
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Patentee:
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| Axel L. Ruquist (exact or similar names) - Wallace, Shoshone County, ID |
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Patent Dates:
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| Applied: |
Oct. 18, 1916 |
| Granted: |
Aug. 14, 1917 |
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Joel Havens
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Description: |
| Herbert E. Newton - patent attorney
My invention relates to improvements in rafter miters, and the object of my invention is the provision of a device of this character especially designed to enable a workman to quickly, accurately, and automatically determine the angles of various correlated rafter cuts, without having to resort to the old cut and try method, or to the use of difficult and time consuming mathematical calculations. It is well known that the work of laying out of rafters in the usual way by the use of an ordinary square for securing the desired rise and run or the proper lines for the ridge and plate cuts, requires considerable skill, mathematical knowledge, and great care in order to avoid serious errors. With my device it is possible for a carpenter of ordinary intelligence to readily ascertain the angles of the desired cuts with absolute unerring accuracy. Broadly, I provide an instrument which is capable of various adjustments in planes angularly related to a stock, the adjustable elements comprising a plurality of straightedges or arms pivotally and slidably mounted in said stock and so connected and coordinated that the movement and adjustment of one arm will serve to automatically adjust the remaining angle members so as to indicate the proper cuts for the several types of rafters.
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