hopper

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hopper

1. a funnel-shaped chamber or reservoir from which solid materials can be discharged under gravity into a receptacle below, esp for feeding fuel to a furnace, loading a railway truck with grain, etc.
2. any of various long-legged hopping insects, esp the grasshopper, leaf hopper, and immature locust
3. an open-topped railway truck for bulk transport of loose minerals, etc., unloaded through doors on the underside
4. Computing a device formerly used for holding punched cards and feeding them to a card punch or card reader

hopper

[′häp·ər]
(engineering)
A funnel-shaped receptacle with an opening at the top for loading and a discharge opening at the bottom for bulk-delivering material such as grain or coal.

hopper

1. A funnel-shaped bin or chute; used to store loose construction materials, such as crushed stone or sand.
2. One of two barriers on both sides of a hopper light to prevent airflow through the side openings at the ends of the inward-sloping pivoted sash (ventilator, 2).
3. A water tank which releases its contents through a pipe at the bottom; esp. used with a water closet.
4. A water-closet bowl, esp. one that is funnel-shaped.

hopper

A tray, or chute, that accepts input to a mechanical device, such as a disk duplicator or printer. In the days of punch cards, millions of cards were numerically or alphabetically organized by placing them into the hopper of a card sorter, taking them out of all the stackers and putting them back into the hopper for the next card column.


Sorter Hopper
In the 1940s and 1950s, millions of punch cards were placed into hoppers on IBM sorters such as this one. The hoppers were also fitted with two-foot extensions that held more cards. (Image courtesy of The Computer History Museum, www.computerhistory.org)








Paper Hoppers
This Dataproducts laser printer holds 250 sheets of paper in the top hopper and 2,000 in the bottom. (Image courtesy of Hitachi Koki Imaging Solutions, Inc.)
References in periodicals archive ?
The challenge of getting single fillets into as many weigh hoppers as possible, and preventing any weigh hopper from containing more than one fillet at a time was met by combining three different approaches.
It's a good practice to walk through all the areas of your plant where hoppers will be used and note all space restrictions.
Coffee Hoppers was founded in 1990 by Stephen Pemberton, an Australian cabinet maker and antique furniture restorer, who turned his lifelong woodworking skills and eye for detail into designing and making individually handcrafted coffee dispensers or Coffee Hoppers as they are called in Australia.
Langley Dam: Assorted Fritz, PTN, Dawson's Olive, Black Buzzer, Hoppers.
An isolation valve separates hoppers so that a material change can be made in one while the remaining hoppers continue to operate.
The problem, according to Ken Hammon, who oversees instrumentation and electronics at the utility, is that the ash was sometimes sticky, and clung to the sides of the hoppers.
Spacecraft would drop groups of hoppers onto planets, asteroids, or other bodies.
The bi-directional operation improves productivity, along with saving space by consolidating the functions of two conventional hoppers or floor scales.
The first loads all six hoppers from material outside the truck.
It is packaged with a high efficiency tip cooled synchronous technology rotor, a three-zone high efficiency temperature control system, a ram position indicator, a pneumatically actuated ram or an optional hydraulically driven hopper assembly.
One amusement maker asked the Las Vegas-based OEM about changing the way coin hoppers were held inside the machines.
The odd pairing of steaks, burgers, barbecued ribs and chicken with stuffed godamba, string hoppers and watalappam could only happen in Los Angeles.