. The railroad and engineering journal . tted steam, forming a cushion to take up the shock incase the upward stroke is prolonged too much ; N is thesteam-pipe connecting to the boiler ; O is the exhaust-pipeleading from the steam-chest ; P is the pipe conveyingsteam from the steam chest to the balanced valve // ; Q \sa small pipe through which steam is admitted to the re-cessed head of the cylinder ; J\ is the small pipe throughwhich steam can escape from the recessed head ; 5 is alubricator, and 7 is a pipe conveying steam to S, while6is a pipe conveying oil to different parts of the hammer.
. The railroad and engineering journal . tted steam, forming a cushion to take up the shock incase the upward stroke is prolonged too much ; N is thesteam-pipe connecting to the boiler ; O is the exhaust-pipeleading from the steam-chest ; P is the pipe conveyingsteam from the steam chest to the balanced valve // ; Q \sa small pipe through which steam is admitted to the re-cessed head of the cylinder ; J\ is the small pipe throughwhich steam can escape from the recessed head ; 5 is alubricator, and 7 is a pipe conveying steam to S, while6is a pipe conveying oil to different parts of the hammer. CHAPTER SELLERS DOUBLE-ACTING HAMMER. Mr. William Sellers, of Philadelphia, has introduced inthe United States the Morrison steam hammer, shown inlig. 109, and the attention of this engineer has been con-stantly given to improvements of this tool in such a wayas to increase its efficiency and durability. The essentialpoint of the Morrison system is that the striking part ofthe hammer is composed of a long rod of wrought with a piston fastened on the upper end of the rod, passingthrough the cylinder-head and serving as a guide. Thispart of the rod has a flat place formed upon it to preventany rotary movement. It is of less diameter than thelower part, as the greater weight of the metal shouldalways be found nearest the point at which the blow isstruck, and each of these parts is proportioned to the workwhich it has to do. This system leaves consequently thespace below the cylinder completely free and gives thehammerman every facility for doing his work. The frames are made with each leg in two pieces, andcarry the cylinder on their upper part ; between the cyl-inder and the frame an elastic cushion is placed. Betweenthe two parts of each leg of the frame also there is placeda thin plate of wood, which permits a certain movementunder the strains resulting from the shocks of the hammer,the object being to decrease the chances of breakage. For hammers having very
Size: 1266px × 1974px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
