| 摘要 |
A device to change the rotation of a shaft such as in an electric hand drill to the reciprocating motion necessary to power a saw blade. The reciprocating attachment has a grooved shaft and saw blade holder connected by a bearing all of which are contained in a housing. As the grooved shaft is rotated the shape of the groove in the grooved shaft causes the saw blade holder to move in a reciprocal manner in a groove in the housing. This provides the motion necessary to use a hand drill to saw an object. Alternative versions of the device include the widening of the groove in the grooved shaft with the saw blade holder having a holder pin and an end retained in a holder groove to cause the reciprocal motion. In addition, an inclined disk may be mounted on the rotating disk shaft to engage the saw blade holder slot to cause the reciprocal motion.
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