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US 4,068,991 AGranted
Layer-forming apparatus especially for particle board mats
AssigneeG. Siempelkamp GmbH & Co.
InventorsWerner Ufermann, Heinrich Axer, Wolfgang Michels
Life of this patent
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Abstract
A layer-forming apparatus for making particle-board mats comprises a spreading head adapted to deposit particulate matter upon a mat-forming surface. The distributing head comprises an array of mutually parallel interdigitated disk rollers with the interfitting disks defining progressively increasing interstitial spaces as the particles move from one side of the roller array to the other side thereof.
Claims10
An apparatus for forming a particle-board mat, comprising:
- a mat-forming surface displaceable in a given direction;
- a spreading head disposed above said surface, said spreading head comprising an array of mutually parallel interdigitated disk rollers defining between them spaces of a width increasing from an upstream side of said array to a downstream side thereof;
- means for feeding particulate material to said array at said upstream side thereof whereby said particulate material passes downwardly between said rollers in a fine-particle column, an intermediate-particle column and a coarse-particle column, onto said surface;
- means forming an air sifter between said head and said surface for promoting the separation of fine particles and the deposition thereof on said surface as a respective zone of the mat;
- a separating sieve in said air sifter proximal to the upstream side of said array;
- and means for periodically displacing said sieve.
3 more elements
An apparatus for forming a particle-board mat, comprising:
- a mat-forming surface displaceable in a given direction;
- a spreading head disposed above said surface, said spreading head comprising an array of mutually parallel interdigitated disk rollers defining between them spaces of a width increasing from an upstream side of said array to a downstream side;
- means for feeding particulate material to said array at said upstream side thereof whereby said particulate material passes downwardly between said rollers in a fine-particle column, an intermediate-particle column and a coarse-particle column, onto said surface;
- means forming a flow channel between said head and said surface for promoting the separation of fine particles and the deposition thereof on said surface as a respective zone of the mat;
- a separating sieve in said flow channel proximal to the upstream side of said array;
- and
- means for periodically displacing said sieve.
4 more elements
Dependencies are inferred from the claim text.