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AssigneeMarion Plywood Corporation
InventorsThomas E. Rogers, Richard J. Rogers, Peter T. Rogers, James G. Rogers
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A laminated veneer hammerboard for a drop forge press comprised of a series of plies of hard, high density wood preferably of the order of a peeled hard maple veneer with the grain of at least most of said veneer plies running along its length, each of said plies of the hammerboard having a thickness in the range of 1/32" to 3/16", and glue deposited between the plies securing the plies together and providing a relatively large number of hard glue surfaces enhancing the wearability of the board. Vertical edges of each ply being disposed at opposite ends of the hammerboard rather than along the width thereof, thus enabling each roller to engage an outer side surface of the outermost ply on each side of the hammerboard rather than directly against opposite vertical edges of each ply.
In a drop forge hammer board press having lift roller means and a hammer, a laminated veneer hammerboard attachable at one end to the hammer and, engageable at an opposite end with the lift roller means, the improvement comprising the hammer board being comprised of a series of plies of hard, high density wood of the order of a peeled hard maple veneer with the grain of at least most of said veneer plies running along its length, each of said plies of the hammer board having a thickness in the range of 1/32" to 3/16", and glue deposited between the plies securing the plies together and providing a relatively large number of hard glue surfaces enhancing the wearability of of the board, vertical edges of each ply being disposed at opposite ends of the hammer board rather than along the width thereof thus enabling the roller means to engage opposite surfaces of the outermost ply on each side of the hammer board rather than directly against the vertical edges of each ply.
In a drop forge hammer board press having lift roller means and a hammer, a laminated veneer hammer board attachable at one end to the hammer and engageable at an opposite end with the lift roller means, the improvement comprising the hammer board being comprised of a series of plies of hard, high density wood of the order of a peeled hard maple veneer with the grain of at least most of said veneer plies running along its length, each of said plies of the hammer board having a thickness in the range of 1/32" to 3/16", and glue deposited between the plies providing glue lines which secure the plies together and providing a relatively large number of hard glue surfaces enhancing the wearability of the board, vertical edges of each ply being disposed at opposite ends of the hammer board rather than along the width thereof thus enabling the roller means to engage opposite surfaces of the outermost ply on each side of the hammer board rather than directly against the vertical edges of each ply, the plies having varying cross-sectional thicknesses and with the plies disposed in closest adjacency to opposite sides of the hammer board having a thinner cross-sectional thickness than those plies disposed interiorly of the hammer board, the plies being so oriented that the opposite vertical edges of the plies are disposed at opposite ends of the hammer board so that the roller means for lifting the hammer board are only engaged against one thinner ply on one side of the hammer board and only against a thinner ply on an opposite side of the hammer board, said thinner plies each being 1/24" in thickness.
Dependencies are inferred from the claim text.