| 摘要 |
Apparatus for cutting sheets of metal including a vertically extending framework having a continuous chain extending over a plurality of sprockets and secured to a cutting element for driving the cutting element in a horizontal path along the length of the framework. Brackets are provided on the framework in a horizontal plane immediately beneath the cutting member for supporting a sheet of metal to be cut along a line across the sheet. One of the sprockets over which the chain is passed is driven by a belt drive from a motor mounted on the framework, such motor being reversible, and being connected in an electrical circuit which includes switches suitable for energizing, deenergizing and reversing the motor. The cutting element employed is a disk of hard metal carried at the outer end of a lever arm which is pivoted about a horizontal axis to raise or lower the disk. A spring element tending to raise the arm from its cutting position is opposed by a threaded shaft which can be directed against a second arm connected to the lever arm carrying the disk to force the disk against the top of a sheet of metal to be cut.
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