e head has perfectly smooth side faces, a linib or crank handle at its periphery. To this disk nected at its other end bya link with one of the whereby adjustment may be made upon either side knuckles. The opposite knuckle has an opening from is fastened a chain, which is connected at its lower as… … inside of the outer sections. The plan seemed a DOOR CHECK. bold innovation, but has recently been put into practice. In Northwich, England, a holder con- rims of the segments. By moving the handle up- structed on this principle, the invention of Messrs. cupy no more space upon the arbor when…
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