. The railroad and engineering journal . r^.^3. ..i_J_l —I. -LS 10 IS VI IS ar to ts Sq SS betr I I I l_i _i. 70 jr 80 95 fo fr /vo also that of the steam, cannot be less, and it follows thatwith a maximum course of i meter the blows given canonly follow each other at the rate of 60 per minute. If, again, we take the 80-ton hammer of the Steel Works passing through the same openings by which it was ad-mitted, and the total section of these openings shouldtherefore be equal to the section of the exhaust valve of ahammer of the same of the Marine, whose fall is 5 meters, the time w
. The railroad and engineering journal . r^.^3. ..i_J_l —I. -LS 10 IS VI IS ar to ts Sq SS betr I I I l_i _i. 70 jr 80 95 fo fr /vo also that of the steam, cannot be less, and it follows thatwith a maximum course of i meter the blows given canonly follow each other at the rate of 60 per minute. If, again, we take the 80-ton hammer of the Steel Works passing through the same openings by which it was ad-mitted, and the total section of these openings shouldtherefore be equal to the section of the exhaust valve of ahammer of the same of the Marine, whose fall is 5 meters, the time which thehammer takes in descending is : /2 h , /1 X „ / = 4/— =z \ ^ = y g ^ 9,81 The volume of steam corresponding to this cylinder is : jy _ d — X /• = X = cub. met. 1-273 J 5 Here D is the diameter of the cylinder and d is that of thepiston rod. In assuming a speed of admission of steam of 52 metersper second and a steam valve of meter in diameter, ^eoiinvL Fig. 34 represents the design of a circular valve for a50-ton hammer of Marrel Brothers. Fig. 44 shows graphically the diameter of the circularvalves of hammers whose power varies from i to 100tons. It will be seen that above 50 tons the dimensionand travel of the valves are so great, that it will be veryuseful to have them worked by a separate motor, or smallauxiliary engine, in such away as to reduce to a minimumthe effort to be put forth by the hammerman. In fig. 44 the ordinates represent the diameter to begiven to the va
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Keywords: ., bookcentury1800, bookdecade1880, bookidrailroadengi, bookyear1887
