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830 monitor

The 830 monitor was an accessory for 140-series classroom pianos. It allowed the teacher’s piano to communicate with student pianos. Surviving examples are extremely rare.

Drawings for the Wurlitzer 830 monitor that have been scanned so far:

  • 154428 (Mounting bracket for Wurlitzer 830 monitor)

  • 504353 (Wrapping tape for 830)

  • 652261 (Push button, blank, for 830)

  • 652262 (Knob, blank, for 830)

  • 652263 (Knob, blank, for 830)

  • 652427 (Switch for 830)

  • 652434 (Power supply cord for 830)

  • 652447 (Plug for 830)

  • 652454 (Hot stamp engraving, cover, for 830)

  • 652455 (Cover, hot stamping, for 830)

  • 652456 (Cover for 830)

  • 652509 (Washer for 830)

  • 652510 (Washer for 830)

  • 652532 (Cap for 830)

  • 652533 (Resistor and plug assembly for 830)

  • 652543 (Earphone and mike for 830)

  • 652561 (Insulated mounting strip for 830)

  • 652727 (Earphones for 830)

Technical engineering drawing of a mounting bracket with dimensions, hole sizes, and notes, produced by The Wurlitzer Company in Corinth, Mississippi.
Document titled 'TAPE-WRAPPING' from Sherman Paper Products Division, Stark-Seal № 6535, standard width 6 inches, approved by engineer on July 26, 1964, with revisions noted. The document contains technical specifications and proprietary information
Technical drawing blueprint for a push button, with detailed dimensions and technical notes.
Technical drawing of a knob blank with measurements and specifications, including notes for use on flat wire shafts and approval details.
Blueprint drawing of a knob, showing front and side views with measurements, created by Harry Davies Molding Company, dated January 21, 1964.
Blueprint technical drawing of a switch, with dimensions, labels, and revision notes. It includes details about the switch type, mounting, and parts like spring force and contacts.
Blueprint of a power supply cord, including dimensions and technical details, with handwritten notes on specifications and approval information.
Technical drawing of a nylon plug with measurements, notes on material and construction details, approved by Switchcraft Inc., Chicago, Illinois.
A technical drawing or engraving plan for a hot stamp engraving cover, showing detailed measurements, letter styles, and engineering notes, with handwritten dates and signatures.
A vintage blueprint for a hot stamping cover, showing technical drawings, measurements, and handwritten notes related to the manufacturing process.
Technical drawing of a hockey goal post labeled 'Cover', showing dimensions and specifications, with handwritten notes and revisions.
Technical drawing of a washer with labeled dimensions and notes, including material "mica filled phenolic" and manufacturer information.
Blueprint drawing of a washer machine with annotations for details such as diameter and material, issued by Switzcraft Inc. and property of Wurlitzer Company.
A technical drawing or blueprint of a part called 'Cap', including handwritten notes, specifications, and stamps from the Wurlitzer Company, dated February 13, 1964.
Blueprint of an electrical component assembly, specifically a resistor and plug assembly, showing detailed technical drawings, measurements, and assembly instructions.
Technical drawing or blueprint of an electronic device labeled as 'Earphone & Mic', including detailed notes and specifications for components like pressure pad, receiver jack, mike jack, and wiring.
Technical blueprint or engineering drawing of an insulated mounting strip with detailed dimensions, annotations, and notes from Wurlitzer Company, c.1964.
Technical drawing for headphone product, labeled as 'Dependable' Headset, with specifications about its impedance and wiring, and marked with various handwritten notes and specifications.