Drawing_351-D-241_Fixed_Wheel_Gate_Indicator_0001.pdf

This is a master technical drawing/blueprint for the Penstock Structure of the Davis Dam Fixed Wheel Hoist, produced by the Davis Dam Field Division. The drawing provides detailed engineering specifications and component designs for a counterweight system used in dam operations.

The blueprint illustrates multiple mechanical components and subassemblies including counterweight wells and shafts, collars, seals, pinion shafts, sprocket shafts, miter gear shafts, mounting blocks, anchor bolts, studs with nuts, terminal boards, cap screws, bushings, binding posts, pipe straps, switch trips, mercury switches, and switch clips. Each component is accompanied by detailed dimensional annotations, material specifications (primarily steel and brass), and part mark numbers (referenced as MARK 239-3A and related variants). The drawing indicates required quantities for each part and provides assembly instructions, including specifications for threads, holes, spacing, and fitting tolerances. Components are designed to work in conjunction with one another in the hoist mechanical system, with specific attention to load ratings, such as the roller-type chain specification requiring minimum 1500 lbs strength. The document serves as a comprehensive reference for manufacturing, assembly, and maintenance of this dam infrastructure equipment.