Feed wheel

Details Feed wheel Feed wheel

1999-08-06

2001-04-10

Bray, W. Donald (Department: 3725)

Woodworking

Feeder or presser

Feed roll

C144S246100, C144S248700, C198S781010, C198S781020

Reexamination Certificate

active

06213177

ABSTRACT:

FIELD OF THE INVENTION
This invention relates to a feed wheel particularly, but not exclusively, for use in a wood working machine.
SUMMARY OF THE INVENTION
In one aspect, the invention provides a feed wheel for use in a wood working machine in which the feed wheel is rotated while in driving engagement with the surface of a wood piece to drive the wood piece past a wood working element, for working the wood piece, the wheel having a periphery adapted, such as by the provision of teeth thereon, for driving engagement with the wood piece, and incorporating a one way drive device such that the feed wheel may be driven only in the direction for feeding of the wood piece, being freely rotatable in the direction opposite to that for feeding.
In another aspect, the invention provides a feed wheel for use in a wood working machine in which the feed wheel is rotated while in driving engagement with the surface of a wood piece to drive the wood piece past a wood working element, for working the wood piece, the wheel having a periphery adapted, such as by the provision of teeth thereon, for driving engagement with the wood piece, the feed wheel having a rim portion separable from the remainder thereof. By this, when the feed wheel periphery wears it may be replaced by fitting a new rim portion.
In another aspect, the invention provides a feed wheel for use in a wood working machine in which the feed wheel is rotated while in driving engagement with the surface of a wood piece to drive the wood piece past a wood working element, for working the wood piece, the wheel having a periphery adapted for driving engagement with the wood piece, the feed wheel having teeth around the circumference thereof, the teeth presenting a forward substantially radial face, and a trailing face which extends at an angle to the substantially radial face, such that the teeth are generally triangular in cross-sectional form, the teeth being arranged such that apices thereof, defined at the junction between the faces thereof, extend at a helix angle relative to the axis of the wheel. The aforementioned angle may be in the range of 15 to 25 degrees, such as for example substantially 20 degrees, and may be such that the apexes extend at the aforementioned angle either in a trailing or advancing direction with respect to the intended direction of rotation of the wheel. The angle presented between the trailing face of each tooth, and the substantially upright face of a succeeding tooth is in the range 58 to 62 degrees. The dimension of the substantially radial face of each tooth reckoned radially of the wheel is within the range of 4 to 7 mm, most preferably substantially 5 mm. The teeth may have one or more circumferential grooves.
The invention also provides a wood working machine, having a feed wheel according to the invention, and a method of forming a wear resistant diamond layer on a surface of the feed wheel.


REFERENCES:
patent: 1514505 (1924-11-01), Conklin
patent: 1652756 (1927-12-01), Bruce
patent: 4058151 (1977-11-01), Yonezu
patent: 4385650 (1983-05-01), Schmidt
patent: 4603718 (1986-08-01), Hutson

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