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Folks,

Basic Fire Control Mechanisms Maintenance, OP 1140A, 1946, has maintenance procedures for the mechanical computing elements used in U.S. Navy fire control systems. These components are the building blocks of some of the most successful analog mechanical computers ever built.

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OP 1140 ABasic Fire Control Mechanisms MaintenanceA Bureau of Ordnance Publication

TABLE OF CONTENTS

Title Table of Contents Introduction Manufacturer's Practices Tools and Materials Basic Repair Operations	Pages 1-79 op1140a-1.pdf (11.7 MB PDF)
Non-Computing Mechanisms Handcranks Shaft Lines Shaft Line Devices Dial Assemblies and Counters The Intermittent Drive The Shock Absorber	Pages 80-173 op1140a-2.pdf (13.6 MB PDF)
Computing Mechanisms Bevel Gear Differential Jewel Differential Screw Type Multiplier Rack Type Multiplier Sector Type Multiplier Cam Type Multiplier Cam Type Component Solver Screw Type Component Solver	Pages 174-273 op1140a-3.pdf (16.7 MB PDF)
Computing Mechanisms Continued Vector Solver Disk Integrators Component Integrators Ballistic Computer Computing Cams	Pages 274-379 op1140a-4.pdf (46.4 MB PDF)
Electromechanical Mechanisms Wiring Switches Follow-Up Servo Motor Synchro Synchro Receivers	Pages 380-489 op1140a-5.pdf (17.5 MB PDF)
Electromechanical Mechanisms Continued Time Motor Regulator Time of Flight Mechanism Solenoid Lock and Clutch Solenoid Signal Lubrication Distribution	Pages 490-562 op1140a-6.pdf (11.2 MB PDF)

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