BUYERS' GUIDE, FOR RAILWAY OFFICERS. LIGHT LOCOMOTIVES AN EXCLUSIVE SPECIALTY. NO 11 S Outside Connected Mine Locomotive, 66 inches High, and 65 inches Wide on 3 feet Gauge. Photograph and Price of Engine, to do the required work, furnished on application. Inquiry should state length of road, gauge, steepest and average grades, radii of curves and whether on grades, weight and kind of rail, and load to be hauled. PORTER, BELL & CO., PITTSBURGH, PENN’A. Works, 50th St. & A. V. R. R Cffice, 5 Monongahela House. Example I.-What proportion of its load on level will engine haul on grade of 20 feet per mile? Look for 20 foot grade at top, follow down perpendicular line to curve, and for percentage look at left hand on horizontal line intersected by the curve. Answer.-50 per cent. Example II.-If an engine's maximum load on 20 foot grade is 200 tons, what is its capacity on 40 foot grade? The diagram gives engine on 20 foot grade 50 per cent. of its capacity on level. Then, 200 tons being 50 per cent., the maximum load on level is 400 tons. The percentage shown on 40 foot grade is 30, and 30 per cent. of 400 gives Answer, 120 tons. This Diagram supposes track to be straight and in good order; the load is to be started on grade; the level is supposed to be absolute, though 5 or 10 feet to the mile is as near a level as is often found in practice. Grades of 500 feet per mile can be overcome by engines working by adhesion alone on good Trail. Tenders must be reckoned as a part of the train, BUYERS' GUIDE, FOR RAILWAY OFFICERS. GEO. B. WALBRIDGE, 55 Chambers Street, New York. RAILWAY SUPPLIES, Nuts, Washers, Spikes, ADAM'S PATENT NUT LOCKS, ELEPHANT AXES, & TOOLS. TRADE MARK PICKS and MATTOCKS, Axe, Pick and Sledge Handles. ------------- DEPOT FOR SHELTON COMPANY'S TACKS, BRADS, Finishing and Clout Nails, CARRIAGE BOLTS, BED SCREWS, &C. Slack bushel of lime, add 2 lbs of white vitrol and water enough to bring to consistence of thick whitewash. This is white and may be colored by adding ochre, umber, lamp black, etc. When lamp black is added to water colors it should first be dissolved in alcohol. For Stone or Brick Work, etc. Slack bushel of lime, then fill the barrel two-thirds full of water and add 1 bushel of hydraulic cement, also 3 lbs. of white vitrol dissolved in water. Make about the thickness of paint and lay on with a whitewash brush. It may be improved by adding a peck of white sand before using. This mixture may be colored same as the preceeding one. For Inside Work. it, for making it permanent clear size, to a pailful of Whitewash for inside work shonld have no salt in use about a quart of thin glue water, or any good clear size, to wash. PASTE, THAT WILL ADHERE TO ANY SUBSTANCE. Sugar of lead, 720 grs., and alum, 720 grs.; both are dissolved in water. Take 21⁄2 ounces of gum arabic and dissolve in 2 quarts of warm water. Mix in a dish 1 pound of wheat flour with the gum water cold till in pasty consistence. Put the dish on the flre, pour into it the mixture of alum and sugar of lead. Shake well, and take it off the fire when it shows signs of ebulition. Let the whole cool, and the paste is made. If the paste is too thick, add to it some gum water, till in proper consistence. PRATT & & CO., IMPORTERS and WHOLESALE DEALERS IN HARDWARE. PROPRIETORS OF THE BUFFALO IRON AND NAIL WORKS, FLETCHER BLAST FURNACES, SPIKE, BOLT, MACHINE FORGE SHOPS. MANUFACTURERS OF Pig and Merchant Bar Iron, MANUFACTURERS AND DEALERS IN ALL KINDS OF Railroad AMD Contractors' Supplies. AGENTS FOR RUSSELL & ERWIN MANF'C CO., Locks of all Kinds. AMERICAN SCREW Co., Wood Screws. WHEELER, MADDEN & CLEMSON, Saws of all Kinds. BUFFALO FILE COMPANY. Files of all Kinds. WHEELER, CLEMSON & CO., " P. S. STUBS, Taper Saw Files. COE & COMPANY, Genuine Coe Wrenches, PARKER'S Iron and Britannia Spoons and Coffee Mill3. PRATT & CO. 44, 46, 48 & 50 Terrace, BUFFALO, N. Y. |