. The Locomotive . ongitudinal lapjoint. A series of investigations was conducted to study thestress conditions in this type of joint and it was found that theconstruction, both from its fundamental shape and the conditions ofmanufacture, presented a most dangerous condition. In The Locomotive for April 1905 there appeared an accountof the disastrous boiler explosion at Brockton, Mass., on March20, 1905, and also an article on the Lap-joint Crack to whichtype of defect the explosion was said to be due. For the sake ofclearness we shall present here some of the more important pointswhich were b
. The Locomotive . ongitudinal lapjoint. A series of investigations was conducted to study thestress conditions in this type of joint and it was found that theconstruction, both from its fundamental shape and the conditions ofmanufacture, presented a most dangerous condition. In The Locomotive for April 1905 there appeared an accountof the disastrous boiler explosion at Brockton, Mass., on March20, 1905, and also an article on the Lap-joint Crack to whichtype of defect the explosion was said to be due. For the sake ofclearness we shall present here some of the more important pointswhich were brought out in the last named article. When a boiler plate is rolled to a cylindrical form, the edgesof the plate, in passing through the rolls, are not gripped aseffectively as is the middle of the plate so that the ends are leftsomewhat flat. The condition produced is illustrated in Fig. necessitates the plates being forced together at the edgesand this produces an added stress that persists unless relieved. Fig. I. I92I.] THE LOCOMOTIVE, 143 by annealing. In addition to this the plates, if bent after punch-ing, will bend along a line of rivet holes as shown in Fig 2 insomewhat exaggerated form.
Size: 1840px × 1358px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1800, bookdecade1860, bookidlocomotive32hart
