688 THE COLLIERY GUARDIAN. April 4, 1913. TRAM NAILS DOG SPIKES SIGNAL WIRE ALBERT FROST & CO., SHEFFIELD. BRAKES AND CLUTCHES ARE BEST WHEN LINED WITH IHBEBEEI FRICTION SURFACE llfflflfl creates sparks, smokes, burns, and is thus a constant danger for everybody. Wood wears quickly and you ■V UUU cannot depend on its brake power, because oil, water, grease, or any other liquid affects its co-efficient of friction noticeably. In most cases you have to use reverse steam. METAI creates sparks and gives a very spasmodic brake action. Spoils your brake path and gives an unreliable IVIE I AL brake-power. fabric is absolutely spark-proof, it doubles your brake-power, no need to use reverse steam. It lasts many times longer than wood or metal. Eerodo fabric is cheaper in the end. Your men have confidence in your brake, wind faster and you get more coal every hour of the day. Eerodo fabrics engage sweetly, they save ropes and machinery. They give instant power and keep the drum path always smooth and unworn. WHICH IS BEST ? We will gladly send samples, illustrated list and copies of testimonials to any inquirer. POST BRAKE THE HERBERT FROOD CO. LTD Sovereign Mills, Chapel-en-le-Frith. <$•