Richard Thomas Jr
Richard Thomas produced a great number of castings for several live steam locomotives. They were placed for sale on eBay in 2015 and 2016.
1-1/2 inch scale wood cylinder block patterns. It has 4-6-6-4 written on the pattern which may be the wheel arrangement of the locomotive that it is designed for. The wood cylinder block patterns shown are referred to as 'one offs' or 'loose patterns' in the foundry business. A good foundry should be able to make these in small quantities in cast iron as a loose pattern. If you want to make a production run, use these as master patterns to create a permanent mounted sand pattern board. Wood is in good shape. It is a split design pattern with two separate halves. I acquired these originally from Richard Thomas in 1999. He had written 4-6-6-4 on these, possibly a locomotive he had built or was in the process of building.
1-1/2 inch scale drive wheel patterns, boxpok style, light, medium and heavy counterweight. These were from the Richard Thomas collection. Includes 3 Solid Aluminum match plate patterns. Includes the insert detail pattern for back side of the wheels. The insert pattern is made of wood. You cut out the inserts and weld or bond to backside to create a detailed pocket. Patterns weigh 86 pounds. Castings weigh 42 pounds. Basic rough dimensions of wheel patterns are: 9.70 inch OD flange, 9.00 inch OD tire, 0.60inch tire wall thickness, 1.25 inch wheel thickness, 2 inch to 2-1/4 inch axle center to crankpin center in middle island, 1 inch to 1-1/16 inch diameter main axle wheel press fit, 5/8 inch diameter crankpin press fit.