Rotary drum wastewood chipper
AssigneeNicholson Manufacturing Company
InventorRobert T. Ackerman
Life of this patent
Estimating the term…
Abstract
The periphery of the chipping drum carries one or more axial rows of individual chipping bits in which the bits of adjacent rows are in staggered relationship if there is more than one row, and further carries an evening knife located in a position trailing the row or rows of individual cutting bits. The individual cutting bits are located with reference to ridges of the circumferentially corrugated drum periphery so that each ridge is disposed substantially centrally of a cutting bit. The anvil is corrugated complementally to the chipping drum periphery and is located so that the cutting edges of individual bits move through notches of the anvil. The evening knife moves close to the projections between the anvil notches.
Claims14
In a chipper including a chipping chamber, a chipping drum rotatably mounted in the chipping chamber and having an axial row of individual cutting bits and an anvil mounted in the chipping chamber adjacent to the periphery of the drum and cooperating with the individual cutting bits to form a chipping throat, the chipping drum having a periphery circumferentially corrugated to provide alternate ridges and grooves, the anvil being corrugated at the chipping throat with projections and notches generally complemental to the grooves and ridges of the corrugations of the chipping drum periphery and the corrugations of the chipping drum periphery and of the anvil being disposed in interfitting relationship, the improvement comprising an elongated evening knife having its length extending axially of the drum in a position trailing the row of individual cutting bits circumferentially in the direction of rotation of the drum, and means mounting said evening knife on the chipping drum with its cutting edge located to pass closely adjacent to the projections of the corrugate anvil as the drum is rotated.
In a chipper including a chipping chamber, a chipping drum rotatably mounted in the chipping chamber and having an axial row of individual cutting bits, and an anvil mounted in the chipping chamber adjacent to the periphery of the drum and cooperating with the individual cutting bits to form a chipping throat, the chipping drum having a periphery circumferentially corrugated to provide alternate ridges and grooves, the anvil being corrugated at the chipping throat with projections and notches generally complemental to the grooves and ridges of the corrugations of the chipping drum periphery, and the corrugations of the chipping drum periphery and of the anvil being disposed in matching relationship, the improvement comprising the anvil further defining grooves merging with said notches at the chipping throat and flaring away from said notches.
Dependencies are inferred from the claim text.