(1) STUDY THE MANUAL AND SUBMIT PROPOSED REVISIONS THEREOF The Committee recommends the following Supplement to the Speci fications for Switches, Frogs, Crossings and Guard Rails, adopted March, 1921: SUPPLEMENT TO SPECIFICATIONS FOR SWITCHES, FROGS, CROSSINGS AND GUARD RAILS Manganese Steel Track Castings 1. GENERAL CONDITIONS.-Castings shall be reasonably smooth and true to pattern in accordance with good foundry practice. Large lumps, sharp fins, sand and chills on the outside of castings shall be removed. The castings shall be free from such blow holes, sand holes, cracks, cold shuts and other defects which would impair their serviceability and as further specified below. Castings must be out of twist and reasonably true, both as to general surface and alinement, and must not show any signs of straining or undue denting produced in the straightening process. The bottom part of castings which rest on ties shall be reasonably straight and out of twist, and shall be free from lumps or such imperfections as would prevent a good bearing. 2. IMPERFECTIONS.-Tread surfaces within 21⁄2 in. of gage line and side of groove 1 in. down from tread shall be free from physical defects, such as shrinkage cracks, sand holes, blow holes, cold shuts or segregation of metal, unless such defects are so small that they have been practically removed by the finish grinding, and there must be no indication of unsoundness of the metal. Shrinkage cracks, cold shuts or segregation of metal will not be allowed in any part of the tread surfaces. Sand holes, blow holes, and cold shuts in portions of the casting where they will not appreciably weaken the casting, or impair its wearing qualities, will be permitted. Castings must be free from shrinkage cracks running vertically in web members of solid work or horizontally at or near the ends or in corners of junction of projecting members or longitudinally in grooves. Other small shrinkage cracks which do not materially weaken the casting will be acceptable. The above Supplement, it is felt, would be of material assistance to the inspector on this class of work. Item II The Committee recommends that plan No. 252, dated November, 1921, and titled "Details of Lamp Tips for Switch Stands," be adopted, and that Section 12 of "Requisites for Switch Stands, Including Con necting Rods," adopted March, 1921, be revised to refer to this plan, to read: "12. Lamp tips shall conform to plan No. 252." It was found there are at present in service lamp tips of a great variety of dimensions, varying in many cases by only a small fraction of an inch, each set of dimensions requiring individual patterns or dies. Hence, as one detail of lamp tip could not be proposed to meet all conditions, a sufficient variety of styles has been illustrated to meet various operating requirements. Detail 61 conforms to A.R.A. Signal Section standard. Item III In reference to article "Gage on Curves," adopted, Vol. 11, Part 2, 1910, pp. 942, 954, 955; Vol. 16, 1915, pp. 733, 1145, reading: Present "GAGE ON CURVES" "Curves 8 deg. and under should be standard gage. Gage should be widened in. for each 2 deg. or fraction thereof over 8 deg., to a maximum of 4 ft. 914 in. for tracks of standard gage. Gage, including widening due to wear, should never exceed 4 ft. 91⁄2 in. "Where frogs occur on the inside of curves, the gage at the frog should be standard or the flangeway of the frog should be widened to compensate for the increased gage." Proposed For general conditions in main line tracks, curves 8 deg. and under should be standard gage. Gage should be widened in. for each 2 deg. or fraction thereof over 8 deg., to a maximum of 4 ft. 94 in. for tracks of standard gage. Gage, including widening due to wear, should never exceed 4 ft. 91⁄2 in. Where frogs occur on curves, the gage at the frog should be standard or the flangeway of the frog should be widened to compensate for the increased gage. For the widening of gage and flangeways on curves for the operation of specific locomotives or for special conditions and for curved crossings, refer to Tables No. 1 and No. 2 for "Gages and Flangeways in Curved Track." The Committee recommends that the following supplementary tables be adopted and published in the Manual: Table No. 1, dated November, 1921, and entitled "GAGES AND FLANGEWAYS IN CURVED TRACK" Table No. 2, dated November, 1921, and entitled "GAGES AND FLANGEWAYS IN CURVED TRACK-GAGE DIAGRAMS FOR RIGID WHEEL BASE LOCOMOTIVES" An explanation of these tables is given in Appendix F. (2) REPORT ON TYPICAL PLANS OF TURNOUTS, CROSSOVERS, SLIP SWITCHES, DOUBLE CROSSOVERS AND RAILROAD CROSSINGS, AND DETAIL PLANS Plan 701. Three rail design, angles 90° to 50° inclusive. Plan 702. Plan 708. Single rail design and two rail design, angles below 25° and above 14°15'. Plan 709. Single rail design and two rail design with short easer rails, angles 14°15' to 8°10', inclusive. Plan 710. Single rail design and two rail design, angles 14°15' to 8°10′, inclusive. Manganese Steel Insert Crossings Plan 751. Designs and dimensions of inserts, angles 45° to above 14°15′, Detail "A." Plan 752. Designs and dimensions of inserts, angles 45° to above 14°15', Detail "B." Plan 753. Designs and dimensions of inserts, angles 14°15' to 8°10', inclusive. Plan 754. Three rail design, angles below 45° to 35°, inclusive, Detail “A.” Plan 755. Two rail design, angles below 45° to 35°, inclusive, Detail "A." Plan 756. Three rail design, angles below 35° to 25°, inclusive, Detail "A." Plan 757. Two rail design, angles below 35° to 25°, inclusive, Detail “A." Plan 758. Two rail design with short easer rails, angles below 25° and above 14°15', Detail "A." Plan 759. Two rail design, angles below 25° and above 14°15', Detail “A." Plan 760. Single rail design with short easer rails, angles below 25° and above 14°15', Detail "A." Plan 761. "A." Plan 762. Three rail design, angles below 45° to 35°, inclusive, Detail "B." Plan 763. Three rail design, angles below 35° to 25°, inclusive, Detail "B." Plan 764. Two rail design with short easer rails, angles below 35° to 25°, inclusive, Detail "B." Single rail design, angles below 25° and above 14°15', Detail Plan 765. Two rail design with short easer rails, angles below 25° and above 14°15', Detail "B." Plan 766. Single rail design with short easer rails, angles below 25° and above 14°15', Detail "B." Plan 767. Two rail design, angles 14°15′ to 8°10', inclusive. Twelve of the above crossing plans were presented as information in report for annual meeting of March, 1921. These are now resubmitted with such revisions as were found desirable, with additional plans to make the set complete, the plans of Bolted Rail Crossings covering angles from 90 deg. down to and including 8 deg. 10 min., and the plans of Manganese Steel Insert Crossings, angles from 45 deg. down to and including 8 deg. 10 min. These plans are the result of over two years' work and study and comparison with different railroad standards and standard plans of the manufacturers; and, as submitted, have the approval of both your Committee and the Switch and Frog Manufacturers of the Manganese Track Society. The Committee also recommends that the following plans be received as information only: Plan 801. No. 8 double slip switch with movable center points with uniform risers. Plan 802. No. 8 double slip switch with movable center points with graduated risers. Plan 851. Details of No. 8 double slip switch with movable center points with uniform risers. Plan 852. Details of No. 8 double slip switch with movable center points with graduated risers. The Committee invites your criticism, that the plans may be revised if found desirable and resubmitted next year for adoption, with plans for slip switches of other angles. The above layouts are for the same alinement, the same length of end switch (16'6") and movable crossing points (10'4") being shown on both plans. Plan 801 with uniform risers details switch points conforming to Switch Plan 101, the uniform risers being carried throughout under the inside circle rails between the heels of the inside switch points. Plan 802 with graduated risers details switch points conforming to Switch Plan 102. Special attention is called to the alternates on both layouts, which are considered good practice and which will not make it necessary to change the alinement or any essential details. (3) SUBMIT FINAL PLANS AND SPECIFICATIONS FOR TRACK TOOLS, COLLABORATING WITH Plans are submitted for the following Track Tools: Pinch Bar, Lining Bar, Claw Bar, Track Wrench, Adze, Rail Fork, Spike Pullers, Track Gage, Rail Tongs, Track Chisel, Clay Pick, Spike Maul, Sledge, Track Level and Track Shovel. The plans are the result of two years' consideration by the Committee, during which time the important manufacturers of Track Tools have been consulted and the standard plans of a large number of railroads examined. The Committee have not undertaken to furnish plans for Tamping Bar, Tamping Pick, Ballast Fork, etc., as plans for these tools have been prepared by the Committee on "Ballast." Two types of Claw Bar are submitted, Nos. 1 and 2. Type No. 2 is used more extensively than No. 1. The Committee feel, however, that both types should be submitted. Two types of Track Levels are shown, type No. 1 having an adjustable arm for measuring elevation for curves. Type No. 2 is what is ordinarily known as the "Stop Level" and very commonly used on American and Canadian railroads. In addition to the ordinary type of Adze, the Committee submit a Pick-Eye Adze. This tool can be used with an ordinary pick handle. The Pick-Eye Adze is coming into somewhat general use and should be considered in standard Track Tools. Track Wrenches are submitted for Track Bolts of following diameter: 34", 8", 1", 1%", 1". Bolts up to 1%" in diameter are used in ordinary track construction, while bolts of a larger diameter are used in special work such as frogs and diamond crossings. Two lengths of wrenches are recommended as shown in the drawing. The first is used with ordinary open-hearth steel bolts and the second is used with heattreated or alloy steel bolts. In the design of these wrenches, some consideration was given to the length of wrench necessary to develop the approximate tensile strength of the bolt. The Rail Tongs are designed to handle rails up to and including 130-lb. sections. The Committee recommend that the plans submitted be inserted in the Manual. The Committee are not yet ready to submit Specifications for Track Tools and recommend that this subject be continued during the year 1922. |