e head has perfectly smooth side faces, a limb or crank handle at its periphery. To this disk nected at its other end by a 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 DOHBMANN'S DOOR CHECK. MATTHEWS & QUINLEAN'S ADJUSTABLE GBOOVING bold innovation, but has recently been put into HEAD. practice! In Northwich, England, a holder con- rims of the segments. By moving the handle up- structed on this principle, the…
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