hello from London

[crueby]

Ah, yes, the central valve is the same type of spool valve. The drawing makes it look like ports on either side, but what they did was have a ring around the spool to maximize the area of the port for best flow. The spool itself has openings through the center to allow flow between the ends just like the spool valve on the cylinders. Here is a marked up diagram of that center control valve:


The red arrow shows the steam inlet, and the blue the exhaust outlet (those can be swapped if need be, makes no difference to the function). The green and pink arrows show the pipes leading to the cylinders. In the cross section on the right side, the red and blue arrows show the inlet/exhaust, and the green and pink dots show where the pipes to the cylinders connect in on the valve body casting - they did not show these in the cross section. I show them over on the side where they drew one side of the ring - they would actually be in the center of the ring. If the valve spool is moved up, the inlet steam would be sent out the pink pipe, and the exhaust connected to the green pipe. If the valve spool is moved down, the steam would go through the center of the spool and connect to the green pipe, and the exhaust connected to the pink pipe.  Does that make sense?

[London_lighterman]

Jason I have warco mill/drill round column, and a warco W250. so I can cope with most things,
I would have to sit down with the dreaded blank sheet of paper and make a start.
I was thinking a bed size of 6", that should give me a drum size of about 2 1/2" cylinders of about 1/2" I will keep folks posted.

Are you hoping to do a scale model or just a winch? Your last comment about spending 100s of hours suggests you just want a basic representation as a scale model that replicated the details shown would entail quite a bit of work.

Also what sort of sizes are you able to accommodate on your machines? if doing a detailed representation then that does become a bit easier if the sale is larger unless you like watch making.

It would make a nice model though.

Chris. I take it that the valve is sectioned along the length of the engine, would I be right in thinking that if sectioned across the engine it would show tow flanges each side so a total of 4 outlets. The top to for outside admission and the lower for inside admission of steam and the pair not feeding steam then carry the exhaust?

[London_lighterman]

Hello.
I am over the other side.
there are some good clubs over your side with some nice folk, joining a club is a real help as its like a good forum chat, ideas and lots of tea

Having a local model engineering club allows me to be among likeminded "nutters" but a great source of experience and suggestion.

Greetings from Essex and hope you enjoy the forum. Which model engineering club is it as there's nothing my side of London which I can find?

[London_lighterman]

Wow, You are answering all the possible questions I had about the direction / reverser valve.
The windlass's (anchor winches) also used the reversing system.
I was lucky to see stevedores working these winches loading and unloading ships. The speed they worked and using arms and legs for the reverser and brake.

the diagram will prove really useful, thank you!

Ah, yes, the central valve is the same type of spool valve. The drawing makes it look like ports on either side, but what they did was have a ring around the spool to maximize the area of the port for best flow. The spool itself has openings through the center to allow flow between the ends just like the spool valve on the cylinders. Here is a marked up diagram of that center control valve:


The red arrow shows the steam inlet, and the blue the exhaust outlet (those can be swapped if need be, makes no difference to the function). The green and pink arrows show the pipes leading to the cylinders. In the cross section on the right side, the red and blue arrows show the inlet/exhaust, and the green and pink dots show where the pipes to the cylinders connect in on the valve body casting - they did not show these in the cross section. I show them over on the side where they drew one side of the ring - they would actually be in the center of the ring. If the valve spool is moved up, the inlet steam would be sent out the pink pipe, and the exhaust connected to the green pipe. If the valve spool is moved down, the steam would go through the center of the spool and connect to the green pipe, and the exhaust connected to the pink pipe.  Does that make sense?

[London_lighterman]

No when I saw these types of winches I was under the hook as we called it either loading from ocean going ships when they used their own gear, ie, winches and derricks. Or being discharged with exports.

The container saw the death of the break bulk ship, the winches where designed to be able to(in the hands of a skilled operator) handle most jobs.
Average lifts were 1-2 tons and the sight of a yo-yo or a jumbo lift they could pick up and SLOWLY swing 5-10 tons between two strengthened derricks was awesome.
 

London,
I assume you are or were a crane operator. Looks like an interesting project. But way over my pay grade, haven't done much steam myself. Welcome to the forum and I think you'll find a bunch of folks who know whats involve in that drawing!
Art