Bar screen
First Claim
1. A bar screen for separation by size of lump goods such as chips according to thickness, comprising parallel bars implemented such that adjacent bars are movable relative to each other, said bars being spaced from each other to permit the passage therebetween of goods of acceptable thickness while restricting the passage therebetween of over-thick goods and goods improperly oriented for sizing the thickness thereof, flights disposed on the upper edges of at least one-third of the bars for engaging over-thick goods and goods improperly oriented for separation, and drive means connected to first and second sets of said bars for effecting oscillating linear motion of said sets of bars such that said sets move in opposite directions in the plane of the screening surface, and said bars and flights engage against the goods for turning the goods when the bars are in motion to properly orient the goods for sizing the thickness dimension thereof.
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Accused Products
Abstract
A bar screen for the separation by size of lump goods, such as wood chips, according to its thickness, and comprising parallel bars (1-5) provided with flights (6), where the bars are mutually movable.
18 Citations
7 Claims
- 1. A bar screen for separation by size of lump goods such as chips according to thickness, comprising parallel bars implemented such that adjacent bars are movable relative to each other, said bars being spaced from each other to permit the passage therebetween of goods of acceptable thickness while restricting the passage therebetween of over-thick goods and goods improperly oriented for sizing the thickness thereof, flights disposed on the upper edges of at least one-third of the bars for engaging over-thick goods and goods improperly oriented for separation, and drive means connected to first and second sets of said bars for effecting oscillating linear motion of said sets of bars such that said sets move in opposite directions in the plane of the screening surface, and said bars and flights engage against the goods for turning the goods when the bars are in motion to properly orient the goods for sizing the thickness dimension thereof.
Specification
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- Resources
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Current AssigneeRudolf Woode
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Original AssigneeRudolf Woode
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InventorsWoode, Rudolf
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Primary Examiner(s)Reeves, Robert B.
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Assistant Examiner(s)WACYRA, EDWARD MICHAEL
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Application NumberUS06/618,637Time in Patent Office1,054 DaysField of Search209/659, 209/660, 209/674, 209/393-396, 209/701, 130/26US Class Current209/674CPC Class CodesB07B 1/12 Apparatus having only paral...D21B 1/023 Cleaning wood chips or othe...
