Apparatus for Heating Tubular Metal Goods (Patent No: 725469)

Inventor: Boyce, James J.

Location: Edmonton

Comments: N/A

Description:
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. An apparatus for heating elongated articles which comprises, in combination, a preheating furnace; a holding oven; first conveyor means for moving said articles axially, one at a time, through said furnace for a rapid preheat into said oven; second conveyor and storage means for receiving said articles from said first conveyor means for moving said articles in parallel side-to-side relation across said oven, said second conveyor means comprising at least two elongated screws extending parallel to but spaced from each other partly across the oven and in the direction of movement of the articles across the oven, each of said screws being rotatable in a direction opposite to the other and having a thread pitch opposite to the other; means for transferring said articles from said first conveyor means to said second conveyor means actuable by switching means adapted to be engaged by incoming articles; switching means for regulating the travel of said second conveyor means adapted to be engaged by articles carried on said second conveyor means; third conveying means for moving said heated articles axially, one at a time, out of said oven; means for transferring said articles from said second conveyor and storage means to said third conveyor means actuable by switching means adapted to be engaged by outgoing articles; and means for automatically controlling the temperature of the oven such that said oven is maintained at a uniform desired temperature.

2. An apparatus for heating metal rod, pipe and the like elongated articles to a predetermined temperature comprising a preheater furnace; a holding oven; first conveyor means for moving said articles axially, one at a time, through said furnace for a rapid preheat into said oven; second conveyor and storage means for receiving said articles from said first conveyor means for moving said articles in parallel side-to-side relation across said oven, said second conveyor means comprising at least two elongated screws extending parallel to but spaced from each other partly across the oven and in the direction of movement of the articles across the oven, each of said screws being rotatable in a direction opposite to the other and having a thread pitch opposite to the other; at least two rails extending parallel to but spaced from each other extending from said conveyor means to said screws, said rails being inclined from the horizontal towards said screws; means for transferring said articles from said first conveyor means to said second conveyor means actuable by switching means adapted to be engaged by incoming articles; switching means for regulating the travel of said second conveyor means adapted to be engaged by articles carried on said second conveyor means; third conveying means for moving said heated articles axially, one at a time, out of said oven; means for transferring said articles from said second conveyor and storage means to said third conveyor means actuable by switching means adapted to be engaged by outgoing articles; and means for automatically controlling the temperature of the oven such that said oven is maintained at a uniform desired temperature.

3. An apparatus for heating metal rod, pipe and the like elongated articles to a predetermined uniform temperature comprising, in combination, a preheater furnace; a holding oven; first conveyor means for moving said articles axially, one at a time, through said furnace into said oven at one side thereof; second conveyor and storage means for receiving said articles from said first conveyor means for moving said articles in parallel side-to-side relation from one side of said oven to the other side, said second conveyor means comprising at least two elongated screws extending parallel to but spaced from each other partly across the oven, each of said screws being rotatable in a direction opposite to the other and having a thread pitch opposite to the other; at least two rails extending parallel to but spaced from each other extending from said conveyor means to said screws, said rails being inclined from the horizontal towards said screws; means for transferring said articles from said first conveyor means to said second conveyor means actuable by switching means adapted to be engaged by incoming articles; switching means for regulating the travel of said second conveyor means adapted to be engaged by articles carried on said second conveyor means; third conveyor means for moving said heated articles axially, one at a time, out of said oven; means for transferring said articles from said second conveyor and storage means to said third conveyor means actuable by switching means adapted to be engaged by outgoing articles; and means for controlling the temperature of the oven such that said oven is maintained at a uniform desired temperature.