454 Orr & Lockett Hardware Co., Chicago. THE “O. & L.” ANTI-FRICTION DOOR HANGER. WITH SELF LOCKING LOOSE AXLE. … No. 2. The above are sectional cuts of the “ 0 & L ” Door Hanger, which illustrate the Self Locking Loose Axle feature. Ho. 1 shows the axle near the end of runway. Ho. 2, the axle. Ho. 3, is a cross section of the wheel and rider bars, showing the axle loose in the wheel and how held in the slots…
Hardware · Orr & Lockett Hardware Co.
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-734-315.webp)
