What SANIU UNI DIC Ee Is “Alundum” is the trade-mark name for an abrasive product used ex- tensively in the manufacture of grinding wheels for machining steel, steel alloys and other materials. As the cutting agent in grinding wheels and sharpening stones and as a medium for polishing metals this abrasive material has become a vital factor in the metal industries, where grinding in recent years has taken a prominent place among the metal machining operations. It is a product of the modern elec- tric furnace, made by fusing the mineral bauxite. In chemical terms it is oxide of aluminum, Al2O3 in crystalline formation. In chemical composition Alundum abrasive is the same as the ruby and sapphire. Its remarkable qualities for resist- ing wear are due to a peculiar combination of hardness and tough- ness which are valuable requisites in such products as the grinding wheel, which must stand up and resist wear under the severest kind of service. The same wear-resisting properties which have made Alundum abra- sive products so vital to the metal industries throughout the world make it a desirable material for use in a floor tile. It has greater wear- resisting qualities than any known material used in floorings. oy NORTON COMPANY WORCESTER, MASSACHUSETTS GRINDING WHEELS ALUNDUM SAFETY TILE GRINDING MACHINES ALUNDUM REFRACTORIES mveny pet diundum, Safety Aggregate Tile and Treads HE accompanying color plates show only a few of the many possible color combinations obtainable in this tile. With the great variety of marble chips and the various colors of Alundum Safety Aggregates available, you can readily appreciate the color possibilities. The engraver and the printer have quite satisfactorily reproduced the samples submitted to them. If you were looking at one of the tile instead of the picture you would note that it has a slip- proof surface. Alundum Aggregates give it the slip-proof and non-wearing qualities. The aggregates are composed of Alun- dum abrasive grains bonded together with clay by the vitrifying process, crushed and screened to standard sizes. They are made in the following colors: brown, buff, gray, cream and dark green. Alundum Safety Aggregate Tile is made by modern machine methods in one of the largest abrasive manufacturing plants in the world. Marble chips and Alundum Aggregates are bonded together with cement and are ground to a true level surface. The facilities for meeting special requirements are practically unlimited. We have adopted the usual standard sizes, 8’, 9’’, LOS eandel 2. sequates..o: xo . 9 x 18” and 10 x 20’ oblongs. If desired, we can furnish risers, threshold and sanitary base tile to match, or of such color as will harmonize. The introduction of this safety tile for flooring has made it possible for the architect to choose the combination of colors desirable for any type of building, both interiors and outside entrances; plus the non-slip, wear-resisting surface and one that can be readily cleaned. The trade-mark under which it is sold has stood for high quality in abrasive products and refractories for many years and that trade-mark on a tile is in itself a guarantee of high quality. If you have in mind any particular job and will give us an idea what color you wish for the floor, we will select from our many samples a specimen that will be near your choice. NORTON COMPANY, Worcester, Mass., U.S. A. Safety Tile Division atented March 15, 1922—Patents Pending. ALUNDUM SAFETY AGGREGATE TILE COMBINATION: BUFF AND BROWN ALUNDUM SAFETY AGGREGATES NORTON COMPANY CARDIFF GREEN MARBLE MANUFACTURERS AN ARTISTIC, SLIP-PROOF, DURABLE, QUIET, ECONOMICAL WORCESTER, MASS., U.S.A. FLOOR THAT CAN BE CLEANED Patented March 15, 1922—Patents Pending. ALUNDUM SAFETY AGGREGATE TILE COMBINATION: BUFF ALUNDUM SAFETY AGGREGATES WHITE CARRARA AND NORTON COMPANY YELLOW VERONA MARBLE RE OCU ERS AN ARTISTIC, SLIP-PROOF, DURABLE, QUIET, ECONOMICAL WORCESTER, MASS., U.S.A. FLOOR THAT CAN BE CLEANED Digitized by the Internet Archive in 2023 witht funding from Columbia University Libraries https://archive.org/details/alundumsafetyaggOOnort Patented March 15, 1922—Patents Pending. NORTON COMPANY MANUFACTURERS WORCESTER, MASS., U.S.A. ALUNDUM SAFETY AGGREGATE TILE COMBINATION: GRAY ALUNDUM SAFETY AGGREGATES WHITE CARRARA MARBLE AN ARTISTIC, SLIP-PROOF, DURABLE, QUIET, ECONOMICAL FLOOR THAT CAN BE CLEANED Patented March 15, 1922—Patents Pending. NORTON COMPANY MANUFACTURERS WORCESTER, MASS., U.S.A. ALUNDUM SAFETY AGGREGATE TILE COMBINATION: BROWN ALUNDUM SAFETY AGGREGATES RED VERONA AND CARDIFF GREEN MARBLE AN ARTISTIC, SLIP-PROOF, DURABLE, QUIET, ECONOMICAL FLOOR THAT CAN BE CLEANED Patented March rs, 1922—Patents Pending. NORTON COMPANY MANUFACTURERS WORCESTER, MASS., U.S.A. ALUNDUM SAFETY AGGREGATE TILE COMBINATION: LIGHT BUFF ALUNDUM SAFETY AGGREGATES CARDIFF GREEN AND BELGIAN BLACK MARBLE AN ARTISTIC, SLIP-PROOF, DURABLE, QUIET, ECONOMICAL FLOOR THAT CAN BE CLEANED Patented March 15, 1922—Patents Pending. ~ ALUNDUM SAFETY AGGREGATE TILE COMBINATION: GRAY ALUNDUM SAFETY AGGREGATES NORTON COMPANY - PINK TENNESSEE MARBLE MANUPACTORERS AN ARTISTIC, SLIP-PROOF, DURABLE, QUIET, ECONOMICAL WORCESTER, MASS., U.S.A. FLOOR THAT CAN BE CLEANED Patented March 15, 1922—Patents Pending. NORTON COMPANY MANUFACTURERS WORCESTER, MASS., U.S.A. ALUNDUM SAFETY AGGREGATE TILE COMBINATION: BUFF ALUNDUM SAFETY AGGREGATES BELGIAN BLACK AND YELLOW VERONA MARBLE AN ARTISTIC, SLIP-PROOF, DURABLE, QUIET, ECONOMICAL FLOOR THAT CAN BE CLEANED