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; 1-1/8 inch
tubing in the quadrangle with the exception of the head, which is 1-1/4
inch. Height, 23, 24, 25 and 26 inches. Rear triangle 3/4 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, 1-1/4 inches diameter. #_Handle Bar._#--Cold-drawn,
weldless steel tubing, 7/8 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; 6-1/2 inch throw. #_Pedals._#--Brandenburg; others on
order. #_Chain._#--1/4 inch, solid link, with hardened rivet steel
centers. #_Saddle._#--Black, attractive and comfortable; our own make.
#_Saddle Post._#--Adjustable, style "T." #_Tread._#--4-7/8 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.#
CHICAGO.