This wheel is made especially for the Nature Study Publishing Co., to be used as a premium. It is unique in design, of material the best, of workmanship unexcelled. No other wheel on the market can compare favorably with it for less than $100.00.

SPECIFICATIONS FOR 1897 “BIRD” BICYCLE.

Frame.—Diamond pattern; cold-drawn seamless steel tubing; 118 inch tubing in the quadrangle with the exception of the head, which is 114inch. Height, 23, 24, 25 and 26 inches. Rear triangle 34 inch tubing in the lower and upright bars. Frame Parts.—Steel drop forgings, strongly reinforced connections. Forks.—Seamless steel fork sides, gracefully curved and mechanically reinforced. Steering Head.—9, 11 and 13 inches long, 114 inches diameter. Handle Bar.—Cold-drawn, weldless steel tubing, 78 inch in diameter, ram’s horn, upright or reversible, adapted to two positions. Handles.—Cork or corkaline; black, maroon or bright tips. Wheels.—28 inch, front and rear. Wheel Base.—43 inches. Rims.—Olds or Plymouth. Tires.—Morgan & Wright, Vim, or Hartford. Spokes.—Swaged, Excelsior Needle Co.’s best quality; 28 in front and 32 in rear wheel. Cranks.—Special steel, round and tapered; 612 inch throw. Pedals.—Brandenburg; others on order. Chain.—14 inch, solid link, with hardened rivet steel centers. Saddle.—Black, attractive and comfortable; our own make. Saddle Post.—Adjustable, style “T.” Tread. —478 inches. Sprocket Wheels.—Steel drop forgings, hardened. Gear.—68 regular; other gears furnished if so desired. Bearings.—Made of the best selected high-grade tool steel, carefully ground to a finish after tempering, and thoroughly dust-proof. All cups are screwed into hubs and crank hangers. Hubs.—Large tubular hubs, made from a solid bar of steel. Furnishing.—Tool-bag, wrench, oiler, pump and repair kit. Tool Bags.—In black or tan leather, as may be preferred. Handle bar, hubs, sprocket wheels, cranks, pedals, seat post, spokes, screws, nuts and washers, nickel plated over copper; remainder enameled. Weight.—22 and 24 pounds.

Send for Specifications for Diamond Frame.

NATURE STUDY PUBLISHING CO.

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