(gate valve) A type of valve in which the closing element (gate) is a disc that moves across the stream, often in a groove or slot for support against pressure.
(Gate valve) A valve with a circular-shaped closing element that fits securely over an opening through which water flows. A valve that utilizes a disc moving at a right angle to the flow to regulate the rate of flow. When a gate valve is fully opened, there is no obstruction to the flow.
A valve with a sliding part that controls the extent of the aperture
(Gate valve) A gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid.
(operate) direct or control; projects, businesses, etc.; "She is running a relief operation in the Sudan"
(of a person) Control the functioning of (a machine, process, or system)
(of a machine, process, or system) Function in a specified manner
(operate) handle and cause to function; "do not operate machinery after imbibing alcohol"; "control the lever"
Be in effect
(operate) function: perform as expected when applied; "The washing machine won't go unless it's plugged in"; "Does this old car still run well?"; "This old radio doesn't work anymore"
gearing: wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed; "the fool got his tie caught in the geartrain"
One of a set of toothed wheels that work together to alter the relation between the speed of a driving mechanism (such as the engine of a vehicle or the crank of a bicycle) and the speed of the driven parts (the wheels)
set the level or character of; "She pitched her speech to the teenagers in the audience"
a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
Equipment that is used for a particular purpose
A particular function or state of adjustment of engaged gears
Operating Theatre, 1913,John Coupland Hospital
The operating theatre,a bit basic, notice the bucket under the operating table ,I suppose to catch the blood and gutts, I would think the big window is to let as much light in as posible
Operating Table
This is an operating table, at the Norristown State Hospital, in Norristown, PA. It hasn't been used since before 1999.