. Railroad digest . vely in place of woode the rigging is placed below the sills. These are of a va-riety of designs ; they are commonly made in each case to suitthe car framing. The committee has considered the advisabilityof recommending a standard spacing of bolts and lugs, with aview to having different draft riggings as a whole interchange-able one with another. The adoption of such a standard hasmet with little favor. The point is made thatbeams will probably last the life of the car and will require re-in case the cars are broken in wrecks. With thisin view, it seems hardly worth while
. Railroad digest . vely in place of woode the rigging is placed below the sills. These are of a va-riety of designs ; they are commonly made in each case to suitthe car framing. The committee has considered the advisabilityof recommending a standard spacing of bolts and lugs, with aview to having different draft riggings as a whole interchange-able one with another. The adoption of such a standard hasmet with little favor. The point is made thatbeams will probably last the life of the car and will require re-in case the cars are broken in wrecks. With thisin view, it seems hardly worth while to attempt to standardizethis detail, as a good deal must be sacrificed for the sake ofuniformity. No better way is known of attaching wooden draft timbersor metal beams to the sills than by vertical bolts, which shouldbe 7-S inch or 1 inch in diameter. Wide keys or lugs are pre-ferred to small keys, well removed from the body bolsters, wherethe sills should be maintained the full section. RAILROAD DIGEST July, 1901. It is found that the M. C. B. draft gear spring, 6 1-1 inchesin diameter by 8 inches high is used generally in spring riggings;at least the dimensions are adhered to and should be retained. The Cleveland, Cincinnati, Chicago & St. Louis Ry is usingdraft springs of larger capacity than the M. C. B. spring, but ofthe same outside dimensions. These springs have three coilswhich fit closely one coil within another. The outer coil testedalone to 0 inches, requires a pressure of 10,700 pounds; the sec-ond coil alone, 5,400 pounds, and the inner coil have in all 23,-400 pounds capacity, but when assembled, a little over 28,000pounds is required to compress the group to 0 inches. The dif-ference is accounted for by the friction of one coil on is mentioned here as showing how the capacity of a springof the standard dimensions can be Mr. Bronner asked to have two members added to the com-mittee, to be appointed by the executive committee. M
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
