Saw chain holding device
OwnerAdrian Z. Lesmeisterinventor
Life of this patent
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Abstract
A device for holding a saw chain during sharpening of the chain cutters which prevents wobble by gripping both the cutter train and the drive train of the saw chain.
Claims9
A device, operated in a vise having opposed movable jaws, for holding a portion of a saw chain during sharpening of the chain cutters, the saw chain including a cutter train straddling a drive train with cogs of the drive train protruding below the cutter train, comprising:
- two corresponding plates pivotably joined near their lower edges, said plates being adapted to rest in the vise with a pincer section of the plates opposite the movable jaws;
- and
- means movable in conjunction with said pincer section for gripping both the cutter train and the drive train while permitting access to the chain cutters for sharpening, said gripping means comprising a pair of upright members with opposing cog clamp portions close to the top edges of said upright members for engaging the cogs and opposing relief portions comprising confronting chamfers along said top edge portions for engaging the cutter train.
A device, operated in a vise having opposed movable jaws, for holding a portion of a saw chain during sharpening of the chain cutters, the saw chain including a cutter train straddling a drive train with cogs of the drive train protruding below the cutter train, comprising:
- a pincer section for resting in the vise opposite the movable jaws so that said pincer section will close as the jaws are moved together;
- and
- means, movable in conjunction with said pincer section, for gripping both the cutter train and the drive train cogs while permitting access to the chain cutters for sharpening,
- said gripping means comprising a pair of upright members having opposing cog clamp portions for engaging the cogs and confronting chamfers along the top edges of said upright members for engaging the cutter train.
A device, operated in a vise having opposed movable jaws, for holding a portion of a saw chain during sharpening of the chain cutters, the saw chain including a cutter train straddling a drive train with cogs of the drive train protruding below the cutter train, comprising:
- a pincer section for resting in the vise opposite the movable jaws so that said pincer section will close as the jaws are moved together;
- and
- means, movable in conjunction with said pincer section, for gripping both the cutter train and the drive train cogs while permitting access to the chain cutters for sharpening,
- said gripping means comprising a pair of upright members having opposing cog clamp portions for engaging the cogs and opposing relief portions for engaging the cutter train, said relief portions including means for first raising the saw chain until said cog clamp portions grip the cogs, and then gripping the cutter train, thereby permitting said holding device to accommodate saw chains of varying sizes.
Dependencies are inferred from the claim text.