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Patent

Material loader and spreader attachment

Louis S. Schwartz
TLDR
In this article, a material flow control valve is constructed in the annular space around the air plenum by using a fixed plate and a rotatable plate, each with matching holes.
Abstract: 
An air plenum is located within a conduit forming a spout for a granular material supply tube, and air is fed through the air plenum while granular material flows around the plenum and out of the spout. The moving air carries the material away from under the spout and permits the receiving compartment to be completely filled. A material flow control valve is constructed in the annular space around the air plenum by using a fixed plate and a rotatable plate, each with matching holes. If material accumulates to a height blocking the spout, a level sensor within the spout activates a pneumatic cylinder which causes the material flow valve to close by misaligning the holes. The continuing air flow then distributes the material throughout the receiving compartment, and when the level sensor is free of material the flow valve reopens. A pressure sensor in the air system also controls the granular material flow to shut off the flow when the air pressure builds up because the receiving compartment is full.

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Patent

Precision metering apparatus for granular ingredients

Rad Peyvand Melati, +1 more
TL;DR: An apparatus for metering granular material, comprising of a container for holding granular materials, the container including a granular outlet, a mass change measuring device, operatively connected to the container, for measuring a decrease in the mass of the granular items in the container; a forcing apparatus, operated by an electronic controller, for selectively activating and deactivating the forcing apparatus as mentioned in this paper.
Patent

Grain pipe valve assembly

Clinton Martin
TL;DR: In this paper, a grain pipe valve assembly includes a valve couplable to a downspout, which is positionable proximate to a lower end of the pipe and has a swivel gate selectively extendable into the down-spout.
References
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Patent

Vacuum fill system

Norwin C. Derby, +1 more
TL;DR: In this article, a hollow container connected to a plurality of valves, slide gate valves and a vacuum pump for creating a vacuum when filled with flowable materials that causes the flowable material to deaerate and subsequently compact when atmospheric pressure is restored.
Patent

Powder spray apparatus

Richard J. Duffy, +1 more
TL;DR: In this article, a powder material feed stream is sprayed from a plurality of nozzles using a manifold and a feed control section, and a manifold is constructed to provide a uniform flow rate and uniform density pattern.