. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 828. PORCELAIN MOLDINGMACHINE. French design. Thepulleys on the vertical spindle oper-ate an oval chuck, while a curvedform is given to the molded disk bythe revolution of the curved ring androller which moves the trowel for therequired shape of the disk. Thehand whee
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 828. PORCELAIN MOLDINGMACHINE. French design. Thepulleys on the vertical spindle oper-ate an oval chuck, while a curvedform is given to the molded disk bythe revolution of the curved ring androller which moves the trowel for therequired shape of the disk. Thehand wheel operates the variousmovable parts and the trowels formolding the shape to the form ofthe curved disk. 320 TEXTILE AND MANUFACTURING DEVICES, ETC. 829. DIAMOND CUTTING. The form a diamond shall assumeis determined by its shape in the rough, the duty of the lapidary being to cut it so as to sacrificeas little as possible of thestone and obtain the greatestsurface, refraction, and gen-eral beauty. Having decidedupon the form, a model ismade in lead and kept be-fore the workman as a rough diamond iscemented with fusible metalto a handle called a dop, a,leaving the part exposedwhich is to be removed toform one facet. The project-ing portion is then removedby attrition against anotherdiamond similarly set in ahandle,
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Keywords: ., bookauthorhiscoxga, bookcentury1900, bookdecade1910, bookyear1910
