US Patent: 1,133,437
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| Door-latch
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Patentee:
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| Henry A. Holt (exact or similar names) - Wilton, NH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 20, 1914 |
| Granted: |
Mar. 30, 1915 |
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Jeff Joslin
Vintage Machinery entry for Henry A. Holt
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Description: |
| The innovation here is a doorknob that can retract the bolt (latch) by pressure on the knob, not just by turning the knob, to make it easier to open the door when one's hands are full. |
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