These Linotype diagrams are in three sections:
Assembly
Casting
Distribution
FEATURES of the Linotype Distribution Mechanism taken from "Linotype Leadership" published in 1930 by the Mergenthaler Linotype Company.
40
41 - Adjustable Intermediate Channel Front Plate
42 - Second Elevator Starting Spring
43 - Cushion Spring for Distributor Shifter Slide
44 - Matrix Lift Stop
45 - Automatic Font Distinguisher

A small selection of Letterpress Ebay listings appear below. A much bigger selection appears here. Linotype-related Ebay listings are here.