Series I: Records and Operating Manuals, 1921-1962, inclusive
Scope and Contents
These reports and instruction manuals cover Keller machines created by the Keller Mechanical Engineering Company and the Pratt & Whitney Division, Niles-Bement-Pond Company. Many of the items are contained in original company notebooks. Some notebooks were fashioned together for personal use and contain loose papers and blueprints.
Keller machines described in the reports and manuals from the Keller Mechanical Engineering Corporation include: the Type E Keller Automatic Die Cutting Machine, Type E-53 Keller Automatic Die Cutting Machine, Type E-63 Keller Automatic Die Cutting Machine, and Keller Automatic Mold Cutting Machine #543, Type BL, E-5, and E-6 machines and the Keller Lathe Control.
The notebooks from Pratt & Whitney include Sales Department photographs and descriptions of Keller machines. Numeric Keller Machines, Keller Automatic CAM Milling Machines, BL, and BG-21 Machines are described.
The Record Book contains a list of photographs arranged by photograph number with a description and date of the image. The photographs listed in the Record Book correspond to loose photographs and photographs in unpublished and published scrapbooks, notebooks, and manuals throughout the collection.
Some notebooks in this subseries sustained water damage. Although problems such as cover dies bleeding and some stuck photographs with cracking emulsion are present, the damage is minimal. No mold was present during the time of processing.
