The receiving pulley and governor gate shaft may revolve in either direction, as desired.
The receiving pulley is designed to run at 400 revolutions per minute, and is driven by a 4-inch double belt.
The governor gate shaft may be arranged to open the gates in four, six or eight turns, and may be extended on either or both sides of the governor to meet the necessary requirements.
The governor is capable of exerting a pressure ranging from 25,000 to 50,000 foot pounds on the governor gate shaft.
The advantages claimed for this improvement on _the Lombard governor_ are thus stated:
1. It requires only a light water pressure to handle the heaviest gates.
2. It is simple in construction. All parts are easy of access.
3. There are no pumps working under high pressure.
4. There are no dash pots to get out of adjustment, due to the change in temperature of oil, etc.
5. There is but one belt on this machine.
6. All parts which are constantly in motion are equipped with ring-oiling bearings.
Fig. 576 is an illustration of the mechanism necessary to raise and lower _the head gates_ which are used to admit and regulate, also to shut off the water supply from pond or lake _to the flume conveying it to the wheel_. In this case there are two head gates having racks upon the upright timbers connecting with the gates. Two shrouded pinions engage these racks, which are keyed upon a shaft having a large spur wheel at its end, as represented. A pinion upon a second shaft engages this spur wheel which in turn has also a spur wheel which engages a pinion upon the crank shaft having two cranks opposite one another. By means of these cranks with two to four men upon each crank the gates are operated very satisfactorily. These shafts and gears are mounted upon heavy cast iron brackets bolted to the floor. Altogether it forms a very massive piece of mechanism.
_The Utility combination pump governor_ is shown in the figure below. This mechanism may be bolted on any tank or receiver where the water level is to be automatically maintained. It consists of a closed pocket containing a float, A, which rises and falls with the water level inside the tank.
When the water rises above the desired level the float opens the throttle valve and starts the pump, and when it subsides the float falls and shuts off the steam.