This document was published in the US without copyright notice at a time when such notice was required to secure copyright. It therefore passed into the public domain upon initial publication (and in any case all possible copyright in the US from 1920 has expired). This digital reprint remains in the public domain.
Instructional brochure on cleaning the 1R, 1RA, and 1RB lead and rule molds molds for the Lanston Monotype Machine Company Type and Rule Caster. Single sheet folded to give 16 pages. Printing code: 8087-6-21-2M-Fr. "Style 1R Mold, for rules and high and low leads and slugs in any given point-size from 1 1/2 to 12-point inclusive." "Style 1RA mold, for high or low tie-up slugs and electrotype bearers in 12-point." "Style 1RB mold, for 6-point column-rule, also 6-point standard rules and high and low slugs." Also includes an illustrated parts list with emphasis on the parts for low serial number molds.
Notes
Scanned 1200dpi rgb; converted to 600dpi JPGs for upload.