US Patent: 633,657
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| Clamping Appliance For Frames With Glued Mitered Joints
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Patentee:
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| Barthel Müller (exact or similar names) - Coblenz, Germany |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 19, 1898 |
| Granted: |
Sep. 26, 1899 |
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Patent Pictures:
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Barthel Müller patent Sept. 26, 1899 |
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Stan Schulz
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Description: |
| The corner blocks have pulleys; one includes a cam lever tightener and latch for the encircling cord. By varying the internal angle of the corner blocks, the principle applies to clamps for frames with three or more sides.
The specifications note corresponding Austrian and British patent applications. |
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