. The universal assistant, and complete mechanic : containing over one million industrial facts, calculations, receipts, processes, trade secrets, rules, business forms, legal items, etc., in every occupation, from the household to the manufactory. d-force pnmn. or a pump worked by a donkeyengine, etc. On starting the fires, Minhtly elf-at thf sauiy valy. inorder to permit the air to escape from the boilers: bnt on the emissionof steam,whijh indicates the complete ernnlsion of the air. close themat once In stfypvinfj an mninp, shut off the steam, open the fumac«doors, close the damper in the c
. The universal assistant, and complete mechanic : containing over one million industrial facts, calculations, receipts, processes, trade secrets, rules, business forms, legal items, etc., in every occupation, from the household to the manufactory. d-force pnmn. or a pump worked by a donkeyengine, etc. On starting the fires, Minhtly elf-at thf sauiy valy. inorder to permit the air to escape from the boilers: bnt on the emissionof steam,whijh indicates the complete ernnlsion of the air. close themat once In stfypvinfj an mninp, shut off the steam, open the fumac«doors, close the damper in the chimney, curtail the snr>i>lv of injec-tion-water, work the valvp« by hand, and unshin the eccentric- Toback or reverse an enrrinf fitted with the link-motion, all that is requisiteis to change it to the reverse-motion; bnt where only one eccentnc isavailable, shnt off the steam, throw the eccentric hook ont of pear,and, with the starting-bar, apply the steam to the other end of th«piston. 0> Mari>-t: axd otftkk BorLEKs.—In steam ve»»el9. it is nece*-eary, in order to maintain a proper eqnilibriam. that the boilenghoold be placed equidistant from the keelsons on either side; vxf XACBIXIST8 MiH> ENGINEEB3 DEPASTKENT. S77. S9h S78 MACHINISTS AND ENGINEERS DEPARTMENT. deflection from perfect truth in this arrangement entails much trop<ble in adjusting the proper balance of the ship. To this end theyought to be secured by rigid fastenings to the hull, with the lowerface of the boilers and the extension of the flues ranging or conform-ing with the load hue in each direction. In some places it is usual toplace them on a substantial platform composed of 3 inch plank overthe keelsons, on which the boilers are placed, the planks being pr&-viously coated to a depth of 1^ inches or more, w ith a tenacious mixturecomposed of drjing oil and whiting, which affords a hard impen-ious Erotection to the boiler against water and rust. Another way, whichas the advantage of
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Keywords: ., bookcentury1800, bookdecade1870, booksubje, booksubjecttechnology
