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REACTION TORQUE STAND WITH PACKARD ENGINE MOUNTED, USING FLAT MOULINET TO ABSORB POWER.-(RIG USED IN LABORATORY TEST OF WATER RECOVERY APPARATUS FOR U. S. S. "SHENANDOAH.")

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CONTROL ROOM IN

TORQUE STAND HOUSE SHOWING ENGINE CONTROLS AND MEASURING INSTRUMENTS.

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A. E. L. TYPE DYNAMOMETER SCALE APPARATUS FOR TORQUE MEASUREMENT.

FUEL SUPPLY SYSTEM.

Four large underground tanks of 50,000 gallons total capacity are provided for storage of fuel. Two gravity tanks are located adjacent to the torque stand house and two more outside the dynamometer rooms. These tanks are each of 65 gallons capacity, mounted on structural iron stands to provide gravity flow to the individual engine and control rooms.

Supply of fuel to the gravity tanks is effected by five pumps located in a pump house at the storage tanks and two kinds of fuel can be made available for comparative tests at either the torque stand house or the dynamometer rooms by the simple piping system connecting with the gravity tanks.

The system is very flexible. Provisions are made for automatic control, and a flame-valve drainage system saves fire risk. All pumps are fitted with meters.

SHOPS.

The machine and overhaul shop is centrally located and adjoins the welding shop, the photographic and measuring room and the stock and tool rooms.

The overhaul benches are ranged on one side of the room and the engines for overhaul may be pushed in between the benches on stands mounted on castors. The benches themselves are of special design, a horizontal rod above the bench carrying elevator buckets for keeping small parts segregated. The buckets containing the parts may be dipped into a liquid cleaner for removing grease.

Engines and larger engine parts are cleaned by dipping in a steam heated vat containing soap powder solution. Air and electrical connections are provided at the benches for portable tools.

On the other side of the same compartment is the machine shop with lathe, shaper, milling machine, drill press and power saw equipment sufficient to cover the ordinary needs of the

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