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Author Topic: ENGRAVINGS - Marine Engines  (Read 29957 times)
admin
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TN


« on: March 13, 2011, 11:56:14 PM »

I think most of these are marine engines.

Pat J


* Neal-07.jpg (340.82 KB, 1236x836 - viewed 394 times.)

* Ludy-28a.jpg (95.97 KB, 1283x763 - viewed 403 times.)

* Ludy-29.jpg (181.7 KB, 879x1417 - viewed 430 times.)

* Unwin-09.jpg (151.7 KB, 798x1328 - viewed 397 times.)

* Hawkins-08.jpg (77.5 KB, 688x960 - viewed 392 times.)

* Hawkins-09.jpg (202.75 KB, 1480x894 - viewed 417 times.)

* Hawkins-25.jpg (143.44 KB, 790x1358 - viewed 395 times.)

* Hawkins-28.jpg (133.76 KB, 846x1446 - viewed 412 times.)

* Jamieson-06.jpg (221.56 KB, 888x1128 - viewed 396 times.)

* Jamieson-07.jpg (184.04 KB, 912x1306 - viewed 370 times.)
« Last Edit: August 23, 2013, 11:41:49 AM by PatJ » Logged

What did you cast today ?
admin
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TN


« Reply #1 on: March 13, 2011, 11:58:45 PM »

More marine engravings:

I think most of these are marine engines.
(These are also in the Engravings download section, but are copied here for viewing and discussion)

Pat J


* Jamieson-08.jpg (215.68 KB, 914x1450 - viewed 412 times.)

* Langmaid-02.jpg (138.82 KB, 754x1259 - viewed 392 times.)

* Neal-11.jpg (167.75 KB, 679x860 - viewed 424 times.)

* Rose-24.jpg (261.06 KB, 1400x826 - viewed 375 times.)

* Rose-25-02.jpg (156.17 KB, 689x834 - viewed 400 times.)

* Rose-25.jpg (391.35 KB, 1422x840 - viewed 398 times.)

* Rose-26.jpg (346.29 KB, 1372x798 - viewed 420 times.)

* Rose-27.jpg (265.03 KB, 1356x846 - viewed 399 times.)

* Seaton-02.jpg (105.51 KB, 641x990 - viewed 393 times.)

* Seaton-03.jpg (136.17 KB, 686x979 - viewed 418 times.)
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What did you cast today ?
admin
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Special Contributor

Posts: 5899


TN


« Reply #2 on: March 13, 2011, 11:59:09 PM »

More marine engravings:

I think most of these are marine engines.
(These are also in the Engravings download section, but are copied here for viewing and discussion)

Pat J


* Sennett-02.jpg (132.8 KB, 1295x741 - viewed 388 times.)

* Smith-09.jpg (124.8 KB, 1070x744 - viewed 392 times.)

* Smith-11.jpg (217.37 KB, 1096x796 - viewed 417 times.)

* Thurston-37.jpg (184.9 KB, 1570x801 - viewed 407 times.)

* Twin-Audel-10.jpg (116.77 KB, 600x822 - viewed 381 times.)

* Walker-08.jpg (175.46 KB, 892x1138 - viewed 460 times.)

* Walker-09.jpg (192.02 KB, 884x1324 - viewed 407 times.)

* Walker-11.jpg (143.22 KB, 934x890 - viewed 404 times.)

* Walker-12.jpg (82.02 KB, 644x874 - viewed 391 times.)
« Last Edit: March 14, 2011, 12:00:51 AM by PatJ » Logged

What did you cast today ?
Johnlanark
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« Reply #3 on: June 28, 2012, 12:55:37 PM »

That looks like a typical late Herreshoff stationary or circulating engine. There is a drawing of a similar one in "Steamboats & Modern Steam Launches". The MIT Museum holds the works archives. 

The piston is shaped so that condensate drains to the steam ports, and drain cocks aren't needed. The 1885 Herreshoff launch engine that I have been building has the same idea (but is very different otherwise). The valve rod connecting pin will be hollow, but I don't know why it is so long.  Somewhere I think I have a drawing of the bearing at the foot of the dual con rods, it think it just has flats for the rods to be bolted down, and the rods would need to be made absolutely identical in length.

Hope you decide to build one!
John
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Johnlanark
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« Reply #4 on: June 28, 2012, 02:02:49 PM »

I took this photo of a triple at the Herreshoff Museum a few years ago now. It has similar bronze receivers and oddly long valve rod links and you can see how the double con rods join the bearing on the crankshaft. These big engines had a gear driven eccentric shaft. John

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Johnlanark
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« Reply #5 on: June 28, 2012, 03:12:26 PM »

Sorry no, but there is a dead ringer here...
http://www.newsm.org/steam-engines/herreshoff.html

John
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Johnlanark
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« Reply #6 on: June 28, 2012, 06:11:44 PM »

I enquired about a similar "Probably Herreshoff" engine being sold by Preston Steam in England. Kurt Hasselbach the curator at MIT Hart Nautical Collection looked into it for me and advised that the company had never made an engine of the bore and stroke stated. That saved me from having to reinforce my mantelpiece.

It is on this list
  http://www.prestonservices.co.uk/marine.html

John
« Last Edit: August 23, 2013, 11:46:13 AM by PatJ » Logged
Johnlanark
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Posts: 95


« Reply #7 on: June 29, 2012, 08:41:01 AM »

What you can see are huge steam ports on the valve face of the intermediate and low pressure cylinders. The slide valves themselves are missing. John
« Last Edit: August 23, 2013, 11:47:08 AM by PatJ » Logged
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