US Patent: 1,034,535
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| Portable drill, known as hand or breast drill
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Patentee:
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| Ralph P. Thompson (exact or similar names) - Springfield, OH |
| USPTO Classifications: |
| 81/34 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 12, 1911 |
| Granted: |
Aug. 06, 1912 |
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Patent Pictures:
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Thompson 1,034,535 |
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George Langford
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Description: |
| The chuck flips 90 degrees to its normal working position and locks the spindle for easier changing of bits. |
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