Abstract: A mechanism for retrofitting a turret that has a manual rotation system with a motorized turret rotation system includes a gear box mechanically coupled to the turret, an electrically powered prime mover unit mechanically coupled to the gear box, a user operated control device electrically coupled to the prime mover unit, and an electrical power supply electrically coupled to the prime mover unit. The turret rotates relative to a body structure. The gear box and the prime mover unit are mounted to the body structure. The control device and the electrical power supply are positioned on the turret. The power supply provides electrical power to the prime mover. The control device presents a control signal to the prime mover when the user actuates the control device, and the turret rotates in response to the control signal.

Abstract: A starter circuit provides capacitor-assisted energization of a vehicle's starter motor and prevents damage to capacitors in the circuit. The circuit includes a battery, a capacitor pack and a power control switch in the line connecting the pack to the motor and battery. The starter circuit includes a regulator for limiting current flow from the battery to the pack to a selected rate, the regulator being connected between the battery and the pack in parallel with the power control switch. A regulator switch is between the regulator and the capacitor pack. The starter circuit has a control circuit for selectively opening and closing the switches in response to a voltage level of the pack. The control circuit detects the voltage level of the pack, opens the power control switch when the voltage level falls below a predetermined threshold and simultaneously closes the regulator switch.

Abstract: A mechanism for testing electrical components in an ignition system of a diesel engine includes a metal jacket having receptacles passing through the jacket and also includes glow plugs fitting in the receptacles. The jacket has an inlet to admit water or other fluid from a pressurized source and also has an outlet to permit the fluid to escape from the jacket. The fluid flows through the jacket and thereby cools the receptacles, jacket and glow plugs. The testing mechanism includes a valve for metering the rate of flow of fluid into the jacket, the rate of flow being kept at a rate sufficient to prevent the jacket's temperature from exceeding a predetermined level. The glow plugs are connected to an electrical power source such as a battery, and a control circuit connected to the electrical power source and the plugs governs the cycle during which the plugs are electrically heated and then permitted to cool.

Abstract: A starting controller for a diesel engine. The controller has a microprocor that will provide a current to the glow plugs until they are heated to the desired operating temperature and will then distribute sequential pulses to the individual plugs until the engine reaches the desired operating temperature. The system can have a latching circuit that will prevent the preglow cycle from being reinitiated until the glow plugs have been allowed to cool to a level where reinitiation will not represent a substantial degrading effect on the glow plugs.

Abstract: A tracing head is disclosed which will allow a programmable router to trace he programmed path of the router on an inexpensive media to check the programming. This avoids the time and material wastage resulting from cutting metal plated circuit boards without being able to check the programming path.