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Picture

E-15212

The attachment is based on US Patent No. 278,704 June 5, 1883. The rear of only one of the knobs has a grove to hold adjustment washers. The rose for the exterior knob covers the screw. The interior rose has a hole to access the screw, see patent page below.

School:

Colonial 

Manufacturer:

Hall

Dates:

c. 1883

Hall

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Antique Doorknob Collectors of America
All Rights Reserved
  • Home
  • About
  • Contents:
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
  • N
  • O
  • P
    • P-100 Seals
    • P-200 Symbols/Words/Logos
    • P-400 Multi-Letter
    • P-600 Schools
    • P-700 Single Letter
    • P-800 Fraternal/Service
    • P-900 - ID Needed
  • R
    • R-10000
  • S
    • S-100 Enameled Knobs
    • S-200 Enameled Escutcheons
    • S-600
    • S-700
  • V
  • W
  • Updates
  • Join the ADCA
  • Convention
  • Where to Buy
  • Manufacturers
  • Scholarships
  • Contact Us