Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . x60,000 = 152,578. 2. By shearing four rivets in double shear and onein single shear. In this instance, of the four rivets indouble shear, each one presents two sections, and theone in single shear presents one, thus making a total ofnine sections of rivets to be sheared, and the strengthis 9A x S, or .69 x 9 x 45,000 = 279,450. 3. Rupture of the plate at the middle row of rivetsand shearing one rivet. Opposed to this strain thestrengt
Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . x60,000 = 152,578. 2. By shearing four rivets in double shear and onein single shear. In this instance, of the four rivets indouble shear, each one presents two sections, and theone in single shear presents one, thus making a total ofnine sections of rivets to be sheared, and the strengthis 9A x S, or .69 x 9 x 45,000 = 279,450. 3. Rupture of the plate at the middle row of rivetsand shearing one rivet. Opposed to this strain thestrength is P — 2D x T x + iA x S, equivalent - (.9375 x 2) x .4375 x 60,000 + .69 x 90,000 =1190,068. 4. Crushing in front of four rivets and shearing onerivet. The resistance in this instance is 4D x T x C + THE BOILER 69 iA x S, or .9375 x 4 x .4375 x 9°>000+ -69 x 45,000 =178,706. 5. Failure maj be caused by crushing in front of fiverivets, four of which pass through both the inside andoutside butt straps, while the fifth rivet passes throughthe inside strap only, and the resistance is 5D x T x C,equivalent to .9375 x 5 x 90,000= 184, mFigure 23 The strength of the unit strip of plate before drillingis Px T x , or x .4375 x 60,000 = 177,187, andthe efficiency is 152,578 x 100 -*- 177,187 = 86 per cent, With the constantly increasing demand for highersteam pressures, the necessity for higher efficiencies inthe riveted joints of boilers becomes more apparent,and of late years quadruple and even quintuple-rivetedbutt joints have in many instances come into use. Thtquadruple butt joint when properly designed shows a ;o LOCOMOTIVE ENGINEERING high efficiency, in some cases as high as per 23 illustrates a joint of this kind, and the dimen-sions are as follows: T=^in. A = .69 , inner rows = 2>% m-P, 1st outer row = 7^ , 2d outer row = 15 two inner rows of rivets extend through themain plate and both the inside and outside c
Size: 1723px × 1450px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectlocomot, bookyear1916
