Fabulous bit of kit this, old up and downer triple or quad expansion, on the bottom of each cylinder where it enters the lower half. Drilled and tapped a large machined stuffing box containing not steam packing but U.S. Packing. Let go all the nuts on the studding bar two, chainblocks on, let go the remaining two and lower down the piston rod. Looking in the top you have many layers of phosphor bronze segments round the shaft, maybe 5/6 on each row. Behind each segment the casing and each segment was drilled to take several coil springs, just like small valve springs to push the packing against the piston rod. The tops of each piece was drilled and tapped ( you always had to run a tap down each one ) to enable you to screw in an extractor, a slide hammer one or similar was good. Draw each piece out, all of them then onto the next set down . Several layers to come out. Each insert was machined out to take beautifully machined white metal inserts to contact the rod, ie it ran on the white metal inserts and not the casing. Always new sets coil springs fitted and a lot of the time new inserts too. Miles and miles of emery tape to be used here, as the boy on the job helping the U.S. Metallic packing bloke that's all you did for days on end, emery and more emerying. Staggered gaps like rings here mind. Any tramlines repairable on the rods and out with your flat file. ( Or Mr Belzona ) and file flat as you had been taught to do. Very time consuming job, rep normally stayed in a pub for the week and should you get caught up with him night times the other training was executed, training in ale consumption. Good days or what. Build it all back up together, the torque setting for the stuffing box was always FT with locknuts/ split pins fitted. We did two of these old fellows for five years till they went for scrap. One of these featured in my Turning gear question and one of them was in the film " the Heroes Of Telemark " by Kirk Douglas filmed off our coast. You can see the open crankshafts thrashing around in the film. No control rooms here, only low guard rails to stop you being a part of the crank. Bonus of this job ? Scrap white metal paid for Saturday nights plus, provided another apprentice who had done all of this before knew where you kept the whitemetal. In your toolbox? No way, every one knew how to pick locks from day one, it was one of the first things you learnt, you had to to get your own tools back. You had it JK in your old fella?
Remembering The Good Old days, when Chiefs stood watches and all Torque settings were F.T.