Richardson's handbook of projection (1927)

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710 HANDBOOK OF PROJECTION FOR Hokl intermittent unit in your right hand, by its flywheel. Mesh teeth of gear G12, P3, with teeth of small gear attached to inner surface of flywheel and, holding large gear in left hand, shove intermittent casing into opening A-7, P.4, at the same time entering shaft (S-444-G, P.4) of large gear into its bearing. Shove both gear and casing into place at one and the same time, being very sure dowel pin on framing can engages properly with hole in intermittent casing. TAKE NOTICE. — It is essential to smooth running that the teeth of gear G12, P3, and the small gear it meshes with on flywheel shaft, be in the same relation to each other they were before they were separated. In other words the same teeth must be engaged that were engaged before disassembled. On outer rim of the large gear you wall find stamped a cipher (0), and another on the rim of the flywheel, unless you have an old model mechanism, in which case you should turn Plate 2, Figure 256. i