er the blows of the 301-pounder. Mr. a long narrow slot; the key itself being a piece of is a most reprehensible practice, as it injures the nut 1 Chalmers, with a true mechanical prescience, has and the wrench, besides being a waste of time. sheet metal. The end of the key is cut into recesses… … chanism which is necessa* however, sulHoiolitly ob- vious when we reflect rily compact. The groove FURLONG'S SCREW WRENCH. is of such a form that it that, it there bo the least bear on the ends of the tumblers at I, when pressure does not touc?i the sharp edge, but the sides contig- vertical [flay…
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