. The locomotive engineer . tives. Mr. OBrien tells us. however, thatvery little damage was done the eugines. and all ofthem went to work at once. Kellogg^ Alr-Puiiip Packing The metallic air-pump packing which is illus-trated on this page iMnsist* of a conical nut, rings with spring to keep them inplace; it is underxtiMxl that the peripheries of thepacking rings are inclined to corresiwnd wjih theconical opening, and the several packing rings de-creas*- in si?*. When the several purtJt of the packIng are in place the coil spring is coniprc»ised. andexerts an outward pressu
. The locomotive engineer . tives. Mr. OBrien tells us. however, thatvery little damage was done the eugines. and all ofthem went to work at once. Kellogg^ Alr-Puiiip Packing The metallic air-pump packing which is illus-trated on this page iMnsist* of a conical nut, rings with spring to keep them inplace; it is underxtiMxl that the peripheries of thepacking rings are inclined to corresiwnd wjih theconical opening, and the several packing rings de-creas*- in si?*. When the several purtJt of the packIng are in place the coil spring is coniprc»ised. andexerts an outward pressure against the packing rings; us the several packing rings are made in mctions, and are pressed outward in the conical open-ing, the sections have a tendency to close towardeach other, thus pref«ing tirmly around the pistonrod. A very sccnre rtieiallic packing is thus formedaround the piston rod, and all leakage isprevenlpd,as the openings in the .several packing rings breakjoinlH. The advantage of this packing is that it. Alll-Pt!MP P.\rKtNu. can be taken out. and new put in wiihoul discon-necting any part of the pump. It will last longer,as it dont take as stiff a spring to keep it to therod, as the rings are i section. This packing has been in use on the N. P. R. II,almost a year, and is giving the best of set, with proper care, will last three years This packing was patented by F. O. Kellogg,a mechimic in the Brainerd shops of the N. P. Ry. The First Sparlt Arreslcr. In August, 1681, the old loromotive, JohnBull, now in the National Museum at Washing-
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1888
