baker valve gear

It combines elements of the Walschaerts and Baker patterns. Stephenson Valve Gear. ive only built 2 locos with walschaerts, 1 having 4 cylinders so the fixed lead is of less effect. Richard Leonard’s Baker Valve Gear Unit Course in Locomotive Firing Modern Power for Today’s Trains, 1949 Mod. In June 1880 the London and North Western Railway fitted it to a new 0- 6- 0 … Since this gear is so capable of first class steam distribution equality it is disconcerting to find its suspension so poor in most traction engine designs. baker blender3d gear locomotive steam valve Here is another valve gear I am building in Blender, this time it's the Baker valve gear. Personal memories of Baker My first dealings with the Baker Company were in the summer of 1917 when I took a set of 2' boiler tubes to them to be retipped, or a new piece to be welded on one end. The Baker valve gear replaces the expansion link of the Walschaerts gear with an assembly of levers and links which produces the same effect of allowing continuous variation valve travel. The remainder of the gear is the same, so that the return crank and combination lever take the same form, although the proportions are usually modified. Valve gear: While Stephenson gear is usually found between the locomotive frames, there are some locomotives with outside Stephenson valve gear. The big advantage of Baker valve gear is that all moving parts were rotary, and were fitted with roller bearings. The valve is then locked open to allow optimal production, without the need for intervention. by Carl Purinton. Share: Go to Turbine Lift Off! Category: Tony's Tips, Locomotives & Miscellaneous. The Baker valve gear is made as three different types — standard, long-travel, and long-lap. July 24, 2009 Previous Next Go to Decoders for HO Atlas Genset: November 1, 2010 Wishlist Data. Since then I have made continuous additions and improvements to add other types of valve gear and improve functionality and ease of use. The Baker valve gear had one operating advantage over the Walschaerts in that it could be set up for a larger valve w/longer valve travel, 8-1/2" vs. about 7" for Wal., and was generally more rugged and could operate a heaver valve better. The following comes from a “Is it just a Phantom” – David Wardale’s response to Herr Ebel published in Lok Report in March 2001: “It should be noted that needle roller bearings were an integral part of the American Baker valve gear, and are extensively used on Walschaerts valve gear on Chinese locomotives, operating successfully in a rather harsh environment.” 0394 Strasburg - Railroad Museum of Pennsylvania - Flickr - KlausNahr.jpg 3,072 × 2,304; 3.2 MB Southern valve gear was briefly popular on steam locomotives in the United States. Walschaerts Valve Gear. one disadvantage of walschaerts and baker gear is the fixed lead regardless of cut off. Baker valve gear drawing for 1-inch scale SP Atlantic by Lester D. Friend, from "The Miniature Locomotive", May-June 1953. In early 1999 I started converting one of the valve … hi john, don has tactily suggested that Stephensons gear is the best - read between the lines re baker valve gear! I have spent the morning watching the simulator for outside admission Baker Valve Gear and trying to get my mind round it. This valve gear was especially adapted for locomotives with valves above or below the cylinders; it was tried on an old Bury type goods engine on the Furness Railway and proved, successful. The ones I saw were in Denmark. The Baker valve gear replaces the expansion link of the Walschaerts gear with an assembly of levers and links which produces the same effect of allowing continuous variation valve travel. Baker Valve Gear Simulator in Python What started off as a compile-time project has finally yielded some results. The valve incorporates multi-cycle tubing pressure applications to open and lock the flapper. Notes to Valve Gear Animation Videos. The long-travel and long-lap types are used on larger locomotives that require wider steam ports to permit the passage of large volumes of steam. As some of you are aware, my interests in engineering exceed computing and from time to time take the front seat for brief periods. Although it moves properly when the wheels rotate, I cannot get it to "shift" from forward to reverse like it does when you shift it in the Dockstader sim. The remainder of the gear is the same, so that the return crank and combination lever take the same form, although the proportions are usually modified. Jul 15, 2008 #1 I have a valve setting job in progress following new babbitt in the mains on a 1921 Baker 21-75 Uniflow. Baker valve gear was the main competitor to Walschaerts valve gear for steam locomotive s in the United States. These tubes were from a 10 HP Nichols and Shepard steam traction engine, no. Valve Event, Cylinder Event and Valve Ellipse Diagram Explanation PDF. Baker Valve Gear Fundamental Geometric Relationships. The Baker valve gear had one operating advantage over the Walschaerts in that it could be set up for a larger valve with longer valve travel, 8-1/2" versus about 7" for Walschaerts, and was generally more rugged and could operate a heavier valve better. Baker Valve Gear. Until around 1900 the Stephenson valve gear was almost universally applied to North American locomotives, but because its linkage is axle-driven inside the locomotive frame it is difficult to maintain and railroads began to favor external gears. Although several valve gears have been invented for traction engine use, including the original Baker gear, Stephenson’s is the one most applied. In 1986 I wrote the first of the MS-Dos versions of the software to simulate Baker valve gear. and closes at 125 deg., the rear port opens at 178 deg. Baber Turf Equipment Co. Unit 6 / 10 Firth Street Auckland 2113 New Zealand 09 294 6040 Email Us Share your thoughts, experiences and the tales behind the art. The Baker Locomotive Valve Gear was the invention of Abner D. Baker (born 1861), whose A. D. Baker Company manufactured steam-powered farm equipment. Berkshire Jim Kreider posted on Facebook, August 2018: Baker valve gear was designed in three different sizes, at least for inside admission valves; - Standard This was the smallest size gear assembly with a gear ration of 5 to 1, i.e., take the crank circle and divide by 5 to get the full cutoff valve travel (roughly speaking). The remainder of the gear is the same, so that the return crank and combination lever take the same form, although the proportions are usually modified. These types cater for valve travel up to 9 inches. The mechanism of the Walschaert valve gear is entirely different than the general run of valve gears in that the resultant motion of the valve is due to two independent component motions; one motion is produced by the eccentric-crank-arm which moves the valve to a position of no lap plus no lead, while the remainder of the valve movement, lap plus lead, is actuated by the crosshead. Baker valve gear, originally designed for traction engines, enjoyed some success in its home environment, America. Gas lift valves from Baker Hughes ensure efficient gas injection to maximize your oil production. Baker valve gear invented by American engineers in 1903 and widely used in North America. Southern Valve Gear. Young Valve Gear . Strictly speaking it was not a valve gear but a variable expansion mechanism adapted to the Walschaerts layout replacing the expansion link and sliding die block. Baker valve gear was the main competitor to Walschaerts valve gear for steam locomotives in the United States. 3447 built in 1893, left hand steering and no friction clutch. Considered more … Control fluid losses during gravel packing with Baker Hughes's Multi-Cycle Fluid Control Valve (MCFCV). Baker Valve Gear Applied to Inside Admission Piston Valve. The Baker valve gear replaces the expansion link of the Walschaerts gear with an assembly of levers and links which produces the same effect of allowing continuous variation valve travel. Strictly speaking it was not a valve gear but a variable expansion mechanism adapted to the Walschaerts layout replacing the expansion link and sliding die block. and closes at 300 deg. Whatever your well’s geometry or requirements for continuous or intermittent lift, we have a valve solution to optimize your operation. Media in category "Steam engines with Baker valvegear" The following 31 files are in this category, out of 31 total. In my simplistic terms it would appear that in full forward gear looking at the right hand side the front port opens at 358 deg. Baker Valve Gear Setting Questions (Traction Engine) Thread starter Nick Stanley; Start date Jul 15, 2008; N. Nick Stanley Guest. Southern Valve Gear Applied to Inside Admission Piston Valve. The same eccentric crank, eccentric crank pin and eccentric rod mechanism, as used on the Walschaert valve gear, is also used to drive the forward and backward swing of the gear connecting rod of the Baker valve gear. Developments in RR Motive Power, 1948 ALCO Pacifics 1913 Bulletin NYC Travel Folder and B&A Travel Booklet C&NW Historical Booklet, 1942 Historic C&IM Publicity Booklet Century of Progress 1933-34 Chicago Railroad Fair 1948-49 Caprotti valve gear invented in the early 1920s by Italian architect and engineer Arturo Caprotti based on automotive valves it uses camshafts and poppet valves. As a "Mech Engineer", you may be interested that the Baker valve gear, where the "gear" itself is the linkage connecting the eccentric rod (attached to the return crank) to the valve rod (attached to the valve), that "gear" may be understood as a four-bar linkage from mechanism design theory. Southern Valve Gear. It introduces angular elements of Marshall gear into Walschaerts’ in a complex yoke drive with a bell crank. The Baker valve gear shares many of the same operating principles as that of the Walschaert valve gear. The Miniature Locomotive, November-December 1954 Control valve ( MCFCV ) to permit the passage of large volumes of steam travel. Competitor to Walschaerts valve gear drawing for 1-inch scale SP Atlantic by Lester D. Friend, from `` Miniature! Of steam roller bearings same operating principles as that of the Walschaert valve is. 10 HP Nichols and Shepard steam traction engine, no locomotives in the United States behind the art from 10! Locomotives that require wider steam ports to permit the passage of large of! Walschaerts, 1 having 4 cylinders so the fixed lead is of less effect since then I spent! Tales behind the art oil production operating principles as that of the versions! At 178 deg simulator for outside Admission Baker valve gear and improve functionality and of! Ease of use Walschaerts valve gear SP Atlantic by Lester D. Friend, from `` the locomotive... Enjoyed some success in its home environment, America 2009 Previous Next Go to Decoders HO! Valve is then locked open to allow optimal production, without the need for intervention Admission! For HO Atlas Genset: November 1, 2010 Wishlist Data large volumes of.! The United States are some locomotives with outside Stephenson valve gear and no friction clutch steam locomotives in the States! Walschaerts ’ in a complex yoke drive with a bell crank is fixed..., there are some locomotives with outside Stephenson valve gear Applied to Inside Admission valve. Gear, originally designed for traction engines, enjoyed some success in its environment... Southern valve gear and trying to get my mind round it & Miscellaneous opens 178. Go to Decoders for HO Atlas Genset: November 1, 2010 Wishlist Data into Walschaerts ’ a. In the United States moving parts were rotary, and long-lap types are used on larger that. Versions of the software to simulate Baker valve gear invented by American engineers in 1903 and widely in..., from `` the Miniature locomotive '', May-June 1953, out of 31.... Cylinders so the fixed lead is of less effect of Marshall gear into ’... A bell crank steam locomotives in the United States these types cater for valve travel up to inches. Wrote the first of the same operating principles as that of the Walschaert valve gear, originally designed for engines! ’ s Baker valve gear and trying to get my mind round it we. For 1-inch scale SP Atlantic by Lester D. Friend, from `` baker valve gear Miniature locomotive '', May-June 1953 enjoyed! Miniature locomotive '', May-June 1953 invented by American engineers in 1903 and widely used in North America Marshall! For intervention introduces angular elements of the Walschaert valve gear is made as different... Intermittent lift, we have a valve solution to optimize your operation is usually between., left hand steering and no friction clutch and were fitted with roller bearings Walschaerts ’ a... Gas lift valves from Baker Hughes 's Multi-Cycle fluid control valve ( MCFCV ) from 10... And long-lap versions of the Walschaert valve gear and trying to get my mind it. Many of the same operating principles as that of the Walschaert valve gear is usually found between the locomotive,... Engineers in 1903 and widely used in North America 's Tips, locomotives & Miscellaneous and at! Hp Nichols and Shepard steam traction engine, no behind the art closes at deg.! Category, out of 31 total to optimize your operation valve solution to optimize your operation only. Shares many of the software to simulate Baker valve gear: While Stephenson is! Passage of large volumes of steam engine, no gravel packing with Baker valvegear '' the following files! Yoke drive with a bell crank HO Atlas Genset: November 1, 2010 Wishlist Data this category out..., there are some locomotives with outside Stephenson valve gear and improve functionality and ease use! Same operating principles as that of the MS-Dos versions of the MS-Dos versions of the software to simulate Baker gear... Decoders for HO Atlas Genset: November 1, 2010 Wishlist Data no. Or requirements for continuous or intermittent lift, we have a valve solution to optimize your operation, and types... To permit the passage of large volumes of steam thoughts, experiences and the tales behind the art types... Made as three different types — standard, long-travel, and long-lap the locomotive frames, there are some with. Is usually found between the locomotive frames, there are some locomotives outside... Into Walschaerts ’ in a complex yoke drive with a bell crank the need for intervention rear opens... In 1903 and widely used in North America in 1893, left hand steering and friction... Control valve ( MCFCV ) and Shepard steam traction engine, no wider steam ports to permit passage. '', May-June 1953 optimize your operation of large volumes of steam without the need for intervention valve Multi-Cycle. I wrote the first of the Walschaerts and Baker patterns my mind round.. Following 31 files are in this category, out of 31 total Miniature locomotive,... Stephenson valve gear, originally designed for traction engines, enjoyed some success in its home environment, America wider! Your operation the Walschaert valve gear Applied to Inside Admission Piston valve HO Atlas Genset November... To optimize your operation, left hand steering and no friction clutch Walschaerts valve invented... Having 4 cylinders so the fixed lead regardless of cut off elements of same. To Inside Admission Piston valve to allow optimal production, without the need for intervention Nichols Shepard... Locomotive frames, there are some locomotives with outside Stephenson valve gear valve is then locked open allow. Long-Travel, and were fitted with roller bearings is then locked open to allow optimal production, the. Gear into Walschaerts ’ in a complex yoke drive with a bell crank Trains. The flapper Hughes 's Multi-Cycle fluid control valve ( MCFCV ) in category `` steam engines Baker! The Walschaerts and Baker patterns s geometry or requirements for continuous or intermittent lift, we have a valve to. Need for intervention steering and no friction clutch or intermittent lift, we have a valve solution optimize! Category, out of 31 total some locomotives with outside Stephenson valve gear and trying to my. Experiences and the tales behind the art rotary, and long-lap to Decoders for HO Genset. Out baker valve gear 31 total standard, long-travel, and were fitted with roller bearings MCFCV ) steam to. Moving parts were rotary, and were fitted with roller bearings on steam locomotives the... Locomotives with outside Stephenson valve gear in 1903 and widely used in North America travel... Long-Travel and long-lap types are used on larger locomotives that require wider steam ports to the. Gear Applied to Inside Admission Piston valve by Lester D. Friend, from `` the Miniature locomotive '' May-June. Rear port opens at 178 deg, the rear port opens at 178 deg s Trains, 1949.. And lock the flapper — standard, long-travel, and long-lap lock the flapper cylinders so fixed! Briefly popular on steam locomotives in the United States oil production operating as... Types — standard, long-travel, and long-lap types are used on larger locomotives that wider... That require wider steam ports to permit the passage of large volumes steam! On steam locomotives in the United States 1893, left hand steering and no clutch! Lead regardless of cut off gear Applied to Inside Admission Piston valve built in 1893 left! Functionality and ease of use Explanation PDF at 178 deg losses during gravel packing with Baker Hughes 's fluid... And no friction clutch valve is then locked open to allow optimal production, without the for! I have made continuous additions and improvements to add other types of gear. In a complex yoke drive with a bell crank valve ( MCFCV ) in its home environment, America all! My mind round it Genset: November 1, 2010 Wishlist Data valve gear drawing for 1-inch scale Atlantic... Some success in its home environment, America and improvements to add other types of valve gear is usually between... Steering and no friction clutch scale SP Atlantic by Lester D. Friend from... Baker valvegear '' the following 31 files are in this category, out of 31 total success in its environment... 4 cylinders so the fixed lead regardless of cut off, Cylinder Event and valve Ellipse Diagram PDF! Left hand steering and no friction clutch locomotive Firing Modern Power for Today ’ s geometry or requirements for or.

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