US Patent: 1,133,437


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Door-latch

Patentee:

Henry A. Holt (exact or similar names) - Wilton, NH

USPTO Classifications:

292/153, 292/166, 292/DIG.037, 70/DIG.067

Tool Categories:

household : door and window hardware

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

George S. Proctor

S. S. Pierce

Patent Dates:
Applied:	May 20, 1914
Granted:	Mar. 30, 1915

Patent Pictures:

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Vintage Machinery entry for Henry A. Holt

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.