W-30120

Attachment based on patent No. 289,305, November27, 1883 by Edward Phipps. Curved flanged keys are used to lock the sleeves to the shank. Drawing is from 1888 T.W. Root Hardware catalog.

School:

Wood

Manufacturer:

Milford Door Knob Co.

Dates:

C. 1883

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 Phipps Milford MI