Close-up mechanical detail on the **second floor machine level** of the Hoffmann-Hayman factory's **interior freight elevator** (**chain-and-sprocket hoisting**, not the exterior track-side lift documented elsewhere in **this gallery**) — **steel roller chain** drapes vertically into frame and **wraps a cast sprocket** whose teeth visibly **seat between** each link paddle, coaxial steel **journal shaft** passing through greased pillow-housing flange **bolted to a rounded cast bracket** anchored to whitewashed **plaster** / board wall (**left**) with rusty through-bolt heads; cylindrical **oiler / grease nipple boss** perched atop the gearbox half — packing **thick old** black fibrous grease and reddish iron oxide; reddish **expanded-metal or wire-grid veil** behind (**shaft infill**) and upright **dimension-lumber trim** (**right**) with warm grain under dim interior light — **documentation** companion to **[Freight Elevator Motor](/assets/images/gallery/factory-elevator-motor.jpg)** and **[first-floor north-entry shaft look-up](/assets/images/gallery/factory-downstairs-elevator-shaft.jpg)** on **this building's interior freight elevator**; **7 October 2015**, **iPhone 5**, handheld **available-light** (visible **ISO noise**, slightly soft chain)
Close-up mechanical detail on the **second floor machine level** of the Hoffmann-Hayman factory's **interior freight elevator** (**chain-and-sprocket hoisting**, not the exterior track-side lift documented elsewhere in **this gallery**) — **steel roller chain** drapes vertically into frame and **wraps a cast sprocket** whose teeth visibly **seat between** each link paddle, coaxial steel **journal shaft** passing through greased pillow-housing flange **bolted to a rounded cast bracket** anchored to whitewashed **plaster** / board wall (**left**) with rusty through-bolt heads; cylindrical **oiler / grease nipple boss** perched atop the gearbox half — packing **thick old** black fibrous grease and reddish iron oxide; reddish **expanded-metal or wire-grid veil** behind (**shaft infill**) and upright **dimension-lumber trim** (**right**) with warm grain under dim interior light — **documentation** companion to **[Freight Elevator Motor](/assets/images/gallery/factory-elevator-motor.jpg)** and **[first-floor north-entry shaft look-up](/assets/images/gallery/factory-downstairs-elevator-shaft.jpg)** on **this building's interior freight elevator**; **7 October 2015**, **iPhone 5**, handheld **available-light** (visible **ISO noise**, slightly soft chain)
Catalog ID
HH-FACT-2015-0005
Gallery
Factory