Test and set-up procedures
Some of the drawings in the collection depict test procedures and other processes for various instruments. We’ve included those drawings on their respective pages, but we thought it would be helpful to also collect them here as PDFs. Click the links below to download.
Advisory Tumbling Specifications
This is a 1963 note (part number 503776) that states the tumbling mixture and procedure for “reeds.” We would need a Bill of Materials or another document to cross-reference which reeds the specifications refer to—whether it is reeds for one of the later reed organs, or an electronic piano.
This is a document (part number 105702) that describes test procedures, environmental specifications, and mechanical noise standards for a rotor assembly (part number 150701) that is described as an Electro-Music Model U-13 Tremolo System.
Setting Up Instructions for the Wurlitzer Spinet Organ
This document (part number 503683) describes how to set up a new Wurlitzer 4040, 4040W,4050, or 4050W organ. In particular, it explains how to remove certain pieces of packing cardboard, how to move the organ, and what to do if the organ arrives damaged.
Celotex Product Line Description — Celo-Board Thin Medium Density Board
This document was found in the file for part number 146843 (expression cover for Wurlitzer 560, 575, and 625). It contains a letter from Celotex, a manufacturer of construction materials, apparently in response to a request for datasheets. In the letter, technical manager Allan F. Bednar explains that there are no datasheets for Celo-Board, but he has enclosed a six-page document entitled “Product Line Description” instead.
Celotex declared bankruptcy in 1990 after attempting to defend a series of lawsuits alleging that the company was aware of asbestos exposure risks that some of its products posed, but failed to inform their employees or the public. The last page of the Product Line Description notes that Celo-Board failed its fire-rating tests, so it’s likely asbestos-free (but we wouldn’t recommend cutting up your Celo-Board expression covers unless you have extremely adequate PPE).
Shelf Life of Eastman 910 Adhesive (May 2, 1960)
Eastman 910 (better known as superglue) was first sold in 1958. We can imagine that it was a pretty miraculous product—but it apparently had the frustrating tendency to dry up in the bottle before it even reached the customer. The letter, found with the drawings for part number 120554 (Adhesive for Model 4430), offers some tips on storing the product until it could be reformulated with a longer shelf life.