Inside-of-door circuit directory of the older **Trumbull Electric Mfg. Co.** breaker panel at the Hoffmann-Hayman factory (Plainville, Conn., USA — pre-1950 vintage, with a yellow Underwriters Laboratories 'INSPECTED ELECTRIC CABINET FRONT' approval label visible at the upper right) — a typed/printed paper directory taped inside the panel door listing the **primary process-equipment circuits** in numbered order, with a mix of pre-printed typewriter labels and later pen/marker corrections: '1 ROASTER MOTOR', '2 [ ] MOTOR / IN [BACK?]', '3 GAS-AIR FAN', '4 ELEVATOR-AT ROASTER', '5 COOLER / Box', '6 SIFTER - 1ST FLOOR', '7 7-1/2 H.P. ON ROOF', '8 7-1/2 H.P. COOLING FAN ON COOLER', '9 1 - #12 MILL', '10 4 GOVT. MILLS' — the panel covering the building's main coffee-process line on the first floor (roaster, cooler, sifter, mills, elevator at the roaster) and rooftop HVAC, distinct from the later second-floor Federal Pacific panel that covers the Tea Machine, air conditioning, and a separate second-floor sifter circuit
![Inside-of-door circuit directory of the older **Trumbull Electric Mfg. Co.** breaker panel at the Hoffmann-Hayman factory (Plainville, Conn., USA — pre-1950 vintage, with a yellow Underwriters Laboratories 'INSPECTED ELECTRIC CABINET FRONT' approval label visible at the upper right) — a typed/printed paper directory taped inside the panel door listing the **primary process-equipment circuits** in numbered order, with a mix of pre-printed typewriter labels and later pen/marker corrections: '1 ROASTER MOTOR', '2 [ ] MOTOR / IN [BACK?]', '3 GAS-AIR FAN', '4 ELEVATOR-AT ROASTER', '5 COOLER / Box', '6 SIFTER - 1ST FLOOR', '7 7-1/2 H.P. ON ROOF', '8 7-1/2 H.P. COOLING FAN ON COOLER', '9 1 - #12 MILL', '10 4 GOVT. MILLS' — the panel covering the building's main coffee-process line on the first floor (roaster, cooler, sifter, mills, elevator at the roaster) and rooftop HVAC, distinct from the later second-floor Federal Pacific panel that covers the Tea Machine, air conditioning, and a separate second-floor sifter circuit](/assets/images/gallery/breaker-panel-labels.jpg)