Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . Millstone-dresser. A machine for cuttinggrooves in the griuding-faee of a millstone. In one form of the machine, the lines radiatingfrom the center are made by a tool raised and droppedby a cam and advancing automatically along a radialarm attached to a central axis. A Swiss machine for dressing millstones is shownin Fig. 3158. The frame A has arms b b terminat-
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . Millstone-dresser. A machine for cuttinggrooves in the griuding-faee of a millstone. In one form of the machine, the lines radiatingfrom the center are made by a tool raised and droppedby a cam and advancing automatically along a radialarm attached to a central axis. A Swiss machine for dressing millstones is shownin Fig. 3158. The frame A has arms b b terminat-ing in feet c, whicli are provided with set screws. Atool-sup)iort S is pivoted to the center of A, and isadjustable by means of sector B, and slides on thearm C of the frame. Two disks at A carry diamonds MILLSTONE-DRESSER. 1444 Fig. 31S9. E E. A cap fitting overthe iiick-iil;itisanil .securedto the hollow Ijlock (? isstruck by a maUet whendressing, while the liolderis ])Us1rh1 along on theguide. Standards C C withscrew-heads permit the ver-tical adjustment of theholder when the points otthe pick-plates becomeworn. A A ii the bed,whieh rests on the mill-stone when the machine isin use. Millstone-grit. A i<-liactory sandstone of which ithe sides and hearth of a Iblast-furnace are comjiosed. Millstoue - tool lor Iurruwinn niillstinies. A the exanijile shown, the blades have a central Fig. 3160,
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