Lubricator Design II
Nelson Riedel, Nelson@NelsonsLocomotive.com
10/03/2005, last updated 11/02/2005

This page shows the detailed drawings for the lubricator starting with the tank..

Tank Bottom:  The tank bottom is made from a 3.812" length of 3/16" X 2" CRS bar.  The only machining required is to drill the ten 3/16" diameter holes.
Tank Sides: The sides are 1.75" pieces of the same 3/16" X 2" CRS bar stock.  Three sides are required --- one is the divider between the two sides of the tank. The larger hole on the front side is for the bearing housing.
Tank Front & Back: The front and back are also cut from the 3/16" X 2" CRS bar stock.
Tank Top: The top is cut from 14  (~0.075") gauge steel plate.   The top will be attached to the back with a piano hinge.
Tank Mounting Bar: The mounting bar is attached to the tank back with a pair of 4-40 flat head screws.   The bar length with be as required to match up with the frame stiffener casting.

Besides the tank, all the other lubricator parts are associated with the pumps.  

Eccentrics: Four eccentrics are used, two on each shaft.   Two of the HM515 shafts are used on the steam oil side of the lubricator.  The HM516 & HM517 are used on the lubricating oil side.   The eccentrics are simply 0.5" CRS rods with a 0.25" hole drilled 0.094" off center.
Eccentric Shafts: Both shafts are 1/8" diameter and each have 3 flats to mate with eccentric and gear setscrews.   The HS510 is a hardened and ground shaft as suggested to work with the rolling clutch bearings. The flats on this shaft will have to be ground.   The HM517 shaft can be mild steel or drill rid and the flats can be ground or milled.
Eccentric Straps: The eccentric straps a made of two pieces silver soldered together.  The band is 9/16" OD, 1/2" ID and 1/8" wide.  The tab is 1/4"  wide X 1/8" thick X ~ 3/16" long.
Clevis:  The stock Clippard RC-0581 clevis pins and C clips are used as is except the two ends are trimmed as shown in the drawing.
Piston: The piston is a piece of 1/8" steel rod threaded 5-40 on one end.  The threaded end  screws into the clevis.
Cylinder: The cylinder is machined from 5/16" hex brass stock.  Care should be taken to keep the 1/16" oil entry holes at the correct position and to keep the lower part of the inside the correct diameter and smooth.
Steam Oil Check Valve: The Clippard  MCV-1BB check valve used on the steam oil pump outputs.  The valve is modified by turning the output end to 3/8" diameter and threading 3/8-24 to match a compression  nut for  3/16" OD tubing.  The plan is to use 1/8" tube.  A 3/16" OD - 1/8" ID bush will be soldered to the end of the tube to match with the larger compression nut.
Lubricating Oil Check Valve: The Clippard MCV-2 check valve is used on the lubricating oil outputs.   The valve is modified by threading the  output end 5/16-24 for a 1/8" OD tube compression nut.
Clutch Housing: The clutch housing is sliver soldered to the input shaft hole on the forward side of the tank.  The housing protruded into the tank as shown on the tank layout drawing in Part I.     The clutch is a loose fit in the 0.437" ID. A 4/40 set through the tank end will keep the clutch from turning.   A 7/16" OD X 1/4" ID O-Ring seal fits in the inner end to keep oil from leaking out through the rolling clutch
Clutch Lever:  The Clutch Lever is clamped onto the rolling clutch that rotates on the input shaft.  The lever will probably be fabricated from a brass block and a 1/8" diameter steel rod soldered to the block.

Linkage: I'm going to wait till after the locomotive has  been constructed to design the linkage between the clutch lever and the eccentric.   Will come back and update this page at that time.

Miscellaneous stock parts:  The Parts List contains a complete list of both the machined and the stock parts.  Some of the stock parts (HS5XX numbers) are identified in the drawings above.  The following list contains other stock parts not shown in the drawings.