>Oh! You mean me?
Merry Christmas, gotta run I don't have a LeChatelier or Water Brake, However, Rob will make me one. I'm sure. Pete can show him! Geoff >I wonder if this water brake would work for >incontinence? For the older engineers with long >hauls between stations! >Merry Christmas >Rob > >--- On Sun, 12/21/08, [email protected] <[email protected]> wrote: > >From: [email protected] <[email protected]> >Subject: Re: [SSLiveSteam] Le Chatalier or Water Brake (2) >To: [email protected] >Date: Sunday, December 21, 2008, 1:52 PM > >[I hope you didn't get the same as I did (see below) but here's a >version converted via Wordpad to plain text.] > >> Any thoughts as to what this valve is, and what it does? > > > >>From " The Science of Railways By Marshall Monroe Kirkman" (where >else?) > >(Pretty useful being able to search the contents of books via Google!) > >"The LeChatelier or Water Brake.-This brake was invented about fifty >years ago by a Frenchman, whose name it still bears. It is highly recommended >for general use in mountainous districts on account of (1) its efficiency, (2) >avoiding the trouble so generally experienced with the driving wheel tires >heating and expanding on account of the friction between the brake shoes and >tires with the ordinary brake. It is very >inexpensive and simple to apply. It is >most generally referred to as the "water brake," although it is not >water, but wet steam that is introduced into the cylinders. The principles >involved are very much similar to those employed >in the operation of the Sweeney >Air Compressor. > >When the engine is reversed while running the cylinders are converted into air >pumps, and greatly retard the speed of the >engine. Before the advent of the air >brake it was almost the universal means employed to stop the engine and aid in >holding a train. But this method of using the reverse lever had serious >objections; as was stated above, the cylinders >were converted into air pumps; to >fill the vacuum thus created in the cylinders behind the moving piston, hot >gases,=2 >0cinders and smoke from the smokebox were drawn in . This of course was very >objectionable and something had to be devised to supply the place of these hot >gases. > > > >LECHATEUER OR WATER BRAKK > >This led to the invention of the water brake by LeChatelier, who used a jet of >wet steam in the exhaust ports, which filled the >vacuum in the cylinders instead >of gases. > > > >Construction.-Its construction and application is clearly shown in Figure 96. >It is composed of a globe valve a and pipe b >which is divided into two pipes c, >c, the latter entering the exhaust pipes as >shown. The globe valve in the boiler >head should be set within easy reach of the engineer and just below the water >line in the boiler. In conjunction with the last statement it may not appear >clear to some why it is asserted that steam is used in the cylinders, and yet >the globe valve connection is below the water line. This is explained by the >fact that water will boil under atmospheric pressure or in the open air at a >temperature of 212 °F and be converted into steam. When the steam is up to a >pressure of 175 pounds the boiling point of the water is 377°F; when it is >released into the exhaust ports, the temperature >being above the boiling point, >it flashes into steam as it enters the cylinders. > >To Operate.-First cut out the air driver brake. Open the cylinder cocks. >Close the throttle valve and open the globe valve of the water brake about a >quarter of a turn, then place=2 >0the reverse lever several notches back of the >center of the quadrant, and note >the density of the steam by its color as it issues from the cylinder cocks. If >it does not have a damp or dense white color the water valve must be opened >until it does; if on the contrary water is >thrown from the stack the water valve >is opened too wide. Then the reverse lever should be moved backward until the >required braking power is exerted; the further back the lever is placed, the >greater the retardation of speed. Thus when placed in but the first or second >notch back of the center, a very little braking power is obtained; when placed >in the extreme back notch it holds the most. To >cut out of service again, close >the water globe valve, and move the reverse lever slowly to forward motion. If >it is desired to use the water brake while the engine is running backward, >reverse the operations explained above. > >" > >http://books.google.com/books?id=akK4s21j0tMC&pg=RA2-PA219&dq=Le+Chatelier+valve#PRA2-PA216,M1 > > > >Pete > > >-----Original Message----- >From: [email protected] >To: [email protected] >Sent: Sun, 21 Dec 2008 3:00 pm >Subject: SSLiveSteam Digest, Vol 38, Issue 2 > > > >Send SSLiveSteam mailing list submissions to > [email protected] >To subscribe or unsubscribe via the World Wide Web, visit > http://postfix.45mm.com/mailman/listinfo/sslivesteam >r, via email, send a message with subject or body 'help' to > [email protected] >You can reach the person managing the list at > sslive >[email protected] >When replying, please edit your Subject line so it is more specific >han "Re: Contents of SSLiveSteam digest..." > >oday's Topics: > 1. Re: Le Chatalier or Water Brake ([email protected]) > >--------------------------------------------------------------------- >Message: 1 >ate: Sat, 20 Dec 2008 15:27:17 -0500 >rom: [email protected] >ubject: Re: [SSLiveSteam] Le Chatalier or Water Brake >o: [email protected] >essage-ID: <[email protected]> >ontent-Type: text/plain; charset="utf-8" >PiBBbnkgdGhvdWdodHMgYXMgdG8gd2hhdCB0aGlzIHZhbHZlIGlzLCBhbmQgd2hhdCBpdCBkb2Vz >woKCkZyb20gIiBUaGUgU2NpZW5jZSBvZiBSYWlsd2F5c8KgQnkgTWFyc2hhbGwgTW9ucm9lIEtp >mttYW4iwqAgKHdoZXJlIGVsc2U/KSAKKFByZXR0eSB1c2VmdWwgYmVpbmcgYWJsZSB0byBzZWFy >2ggdGhlIGNvbnRlbnRzIG9mIGJvb2tzIHZpYSBHb29nbGUhKQoKIlRoZSBMZUNoYXRlbGllciBv >iBXYXRlciBCcmFrZS7igJRUaGlzIGJyYWtlIHdhcyBpbnZlbnRlZCBhYm91dCBmaWZ0eSB5ZWFy >yBhZ28gYnkgYSBGcmVuY2htYW4sIHdob3NlIG5hbWUgaXQgc3RpbGwgYmVhcnMuIEl0IGlzIGhp >2hseSByZWNvbW1lbmRlZCBmb3IgZ2VuZXJhbCB1c2UgaW4gbW91bnRhaW5vdXMgZGlzdHJpY3Rz >G9uIGFjY291bnQgb2YgKDEpIGl0cyBlZmZpY2llbmN5LCAoMikgYXZvaWRpbmcgdGhlIHRyb3Vi 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