Arm for Blade Sharpening Device
First Claim
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1. A blade sharpening arm for use on a scissor or knife blade sharpening grinder, comprising:
- a rigid upper link member having a first upper end end and a first lower end;
a rigid lower link member having a third upper end and a third lower end, said lower end having an axial bore there through for attachment to said grinder;
a rigid middle link member having a second upper end and a second lower end, said middle link member pivotally connected between said rigid upper link member and said rigid lower link member;
a rotatable lock collar with a central orifice, said lock collar hingedly attached to said first upper end of said upper link member;
a round cylindrical blade clamp barrel having a distal end and a proximal end, said blade clamp barrel slidingly mounted in said central orifice of said lock collar; and
a blade clamp affixed to said proximal end of said blade clamp barrel; and
wherein said lower link member has a circular bore that mounts onto a cylindrical horizontal front rail of said blade sharpening grinder so as to allow horizontal sliding movement of said blade sharpening arm along said front rail.
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Abstract
An arm for a blade sharpening device, intended to be retrofitted onto an existing, conventional blade sharpening device so as to offer an inexpensive option to upgrade the operational simplicity and operability of the device. It has a three hingeable link linear support arm that has a lock collar affixed an its proximal end. The lock collar slidingly retains a blade clamp barrel with a blade clamp affixed at its proximal end. The lock collar allows the retraction, extension and limits the rotation of the blade.
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Citations
7 Claims
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1. A blade sharpening arm for use on a scissor or knife blade sharpening grinder, comprising:
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a rigid upper link member having a first upper end end and a first lower end; a rigid lower link member having a third upper end and a third lower end, said lower end having an axial bore there through for attachment to said grinder; a rigid middle link member having a second upper end and a second lower end, said middle link member pivotally connected between said rigid upper link member and said rigid lower link member; a rotatable lock collar with a central orifice, said lock collar hingedly attached to said first upper end of said upper link member; a round cylindrical blade clamp barrel having a distal end and a proximal end, said blade clamp barrel slidingly mounted in said central orifice of said lock collar; and a blade clamp affixed to said proximal end of said blade clamp barrel; and wherein said lower link member has a circular bore that mounts onto a cylindrical horizontal front rail of said blade sharpening grinder so as to allow horizontal sliding movement of said blade sharpening arm along said front rail. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification