Spurs Drawing -002_Rope Cutter MV-19_15.pdf

This file contains technical engineering drawings for a propeller-mounted spurs assembly for the NOAA research vessel "Thomas Jefferson." The drawings are prepared by SPURR Marine Manufacturing and depict detailed mechanical specifications for prop-mounted marine equipment.

The document includes five comprehensive engineering pages showing cross-sectional views, top-view prop hub assembly details, stainless steel filler plate specifications, rope guard components (upper half), and rope guard and strut assembly configurations. Key components detailed include the rotary blade assembly, stationary blade assembly, holding block, mounting plate, stainless steel fasteners (3/8-16 and 5/16-18 S.S. screws), seal retainers, bearing flanges, struts, and rope guard fabrication requirements. Specific dimensional measurements are provided throughout, including diameters ranging from 0.55 inches to 19.500 inches, clearance gaps (0.86 gap noted), and welding specifications with notes indicating "remove after welding" for certain components. The assembly specifications indicate two stainless steel filler plates are required. The drawings note burnout instructions for the rope guard and include propeller rotation diagrams showing left-hand and right-hand configurations with specific burnout locations marked at 45-degree angles from the top center using a SPURR burnout template.