US Patent: 366,652
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| Try Square
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Patentee:
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| Samuel Darling (exact or similar names) - Providence, RI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 19, 1886 |
| Granted: |
Jul. 19, 1887 |
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Joel Havens
"Vintage Machinery" entry for Brown & Sharpe Mfg. Co
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Description: |
| Abstract:
The object of my invention is to produce an instrument that may be used as a try-square for testing internal and external angles of ninety degrees, as a bevel for the principal angles in common use, in with instrument blades of various widths and shapes may be used by removing one and substituting an- other, in which the blade muay be adjusted to any length from the working face or faces of the stock: required in the use of the instrument, in which the blade is held in a gain or rabbet at one end of the stock by a device that shall leave the side of the blade nearly flush and smooth with one side of the stock. and also having in the opposite end of the stock a deeper gain, in which the same blade may be securely held by suitable devices.
Claim:
An adjustable try-square having a stock with a gain or rabbet in one end and an adjustable blade provided with a longitudinal zoo groove, one side of the groove and the bottom forming an acute angle, a screw-nut having a bevel to fit the beveled side of the groove in the blade, and a screw adapted to force the edge of the blade by the action of the beveled surfaces of the groove and nut against the shoulder in the gain to hold the Blade firmly in position. |
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