. American engineer . nt. The splitting dies referred to do notextend the incisions beyond one-third the diameter of the bar. Tests have shown that a piece of staybolt iron in its originalform broke after 15,560 revolutions on a repeated stress testingmachine, while the same material constructed as described failedat 114,120 revolutions. Both test pieces were 8 in. long and hada load of 4,000 lbs. which gave 7,018 lbs. per sq. in. fibre stress atthe root of the thread. The eccentricity of vibration was 3/16 the machine was run at 84 r. p. m. This staybolt is made bythe Patterson-Allen E
. American engineer . nt. The splitting dies referred to do notextend the incisions beyond one-third the diameter of the bar. Tests have shown that a piece of staybolt iron in its originalform broke after 15,560 revolutions on a repeated stress testingmachine, while the same material constructed as described failedat 114,120 revolutions. Both test pieces were 8 in. long and hada load of 4,000 lbs. which gave 7,018 lbs. per sq. in. fibre stress atthe root of the thread. The eccentricity of vibration was 3/16 the machine was run at 84 r. p. m. This staybolt is made bythe Patterson-Allen Engineering Company, New York. TIRE TRANSFER CART At the Clinton, Iowa, shops of the Chicago & North Westerna three-wheel car has been designed for transferring driving-wheel tires with much greater safety and convenience than thecustomary method of placing them on a truck or rolling themby hand, especially in cases where the tires are stored in an up-right position. The construction of the cart is clearly shown in. Cart for Transponing Driving Wheel Tires.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
