JDEng
Part of the e-furniture
Posts: 384
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Post by JDEng on Dec 21, 2013 18:15:46 GMT
The lubricator Divider is quite a complicated device, I have a drawing of one in a book and wouldn't particularly want to reproduce it in a small scale! I have not seen such a drawing for a flow divider for lubricating oil but am familiar with flow dividers for hydraulic systems. Does the one you refer to use a rotating core with fins or veins or some other method? I am curious! The one I have sectional drawings for is in a book called "Steam Locomotive Lubrication" by Peter W Skellon. This particular one was made by Davies & Metcalfe and consists of a housing with a series of passages. In the centre are two double-ended pistons which operate under the pressure of the oil and are arranged at 90 degrees to each other as well as being interlocked so that only one can operate at a time. The supply is arranged to come from one of the four outlets in a cycle. If anyone's interested I'll take a photo of the page and post it but it will take a couple of days. I'm tied up tomorrow and have left the camera at work tonight. John. |
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Post by GWR 101 on Dec 21, 2013 21:11:11 GMT
Hi Alan, many thanks for your input on this and all the others, yes I did read page 129, and yes I expect Firefly will have check valves at mechanical lubricator for the axle boxes etc. and at all delivery points and one at the steam Tee for Hydrostatic system. Paul
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Post by Deleted on Dec 22, 2013 0:12:12 GMT
Hello all--------- these forums get you going, don't they ??..I have been trawling my "Tech. Library" and found this book being the 1928 6th edition from a 1908 1st edition...Thought these extracts might be of use ??...........In the GWR diagram notice how the oil is fed into the main steam supply pipes at the earliest opportunity after leaving the "Dry" header ??-------- This will gives the maxm. time for oil and steam to mix before entering the cylinder chest..... |
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Post by sncf141r on Dec 22, 2013 14:41:07 GMT
Another JohnS; that's interesting information. I might be wrong but it looks as though it might be from an American book. The low pressure check valves will, I assume, be for axleboxes and other points which are not subjected to steam pressure. The lubricator Divider is quite a complicated device, I have a drawing of one in a book and wouldn't particularly want to reproduce it in a small scale! Basically it is designed to split the feed from one pump but ensure that the delivery pressure to two, or four, legs of pipe all remain the same so that all get an equal amount of oil. As has been discussed before, this doesn't happen with a simple tee. I don't recall ever having seen anything about the Ball Type chokes before (except in wrestling!!) so that's a new one on me. Hi John - Yes, the "1947 Locomotive Cyclopedia" is a large book that contains technical data from many locomotive and locomotive appliance manufacturers in North America. There is a wealth of information in it, but it's of course technical data within advertising - how best to describe it? As I am sure you understand, over in North America (At least) mechanical lubrication to many points on a locomotive frame was becoming standard. Even air compressors often had their own mechanical lubricators. The old Shay that I used to supervise, had hydrostatic lubrication with outputs for 3 cylinders + air compressor; everything else was oiled/greased by hand. Another locomotive that I "cut my teeth on" was mechanical lubricated but still did have something like 42 grease points, and a multitude of oil points, and … Others I have had the opportunity to work on, in excursion service, have been a mishmash of hydrostatic and mechanical lubricated. I have not done much with full size steam in about 5 years, although I still keep my provincial (Canadian) certification active. To tell you the truth, model engineering in many ways is more my cup of tea, although barrelling along in the dusk at "full warp speed" with the headlight piercing the gloom ahead, oil fire roaring along by your feet, is magic… |
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Post by Deleted on Dec 22, 2013 15:30:38 GMT
Yes, they ARE a living thing and no mistake !!--------I think your last paragraph says it all for a great many of us...Getting the back of you legs roasted and your knee-caps frozen al at the same time is ------------------ fun ?? 'Course it is !!
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JDEng
Part of the e-furniture
Posts: 384
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Post by JDEng on Dec 23, 2013 13:54:48 GMT
Picture of the relevant page from Peter Skellon's book as promised:  John. |
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Post by Deleted on Dec 23, 2013 14:43:52 GMT
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