. Electric railway gazette . Fig. 4.—Sprocket Wheel. 24 THE STREET RAILWAY GAZETTE. February, 18. Fig. 5 (b).—Cross Section Curve Construction. wearing point upon the cable at any place in the system,and its life can safely be guaranteed to be ten years. Haswell gives the extreme stretch of i and x/% inch wirerope hemp centered at $/% inch in six feet. This is less thanY% inch between the buttons, and is allowed for in the slotscut in the face of the drums; the buttons acting as clampsreduce this possible stretch over one-half. Sprocket Wheel.—(See Fig. 4.) To transmit the motion without jar,
. Electric railway gazette . Fig. 4.—Sprocket Wheel. 24 THE STREET RAILWAY GAZETTE. February, 18. Fig. 5 (b).—Cross Section Curve Construction. wearing point upon the cable at any place in the system,and its life can safely be guaranteed to be ten years. Haswell gives the extreme stretch of i and x/% inch wirerope hemp centered at $/% inch in six feet. This is less thanY% inch between the buttons, and is allowed for in the slotscut in the face of the drums; the buttons acting as clampsreduce this possible stretch over one-half. Sprocket Wheel.—(See Fig. 4.) To transmit the motion without jar, from the movingcable as described, to a passenger car resting on track aboveit, an eight-armed sprocket wheel of cast steel is constructed. The web and hub of the wheel are cast in one piece,with a flange projection from the side to carry a strap this are riveted the eight arms named, at such dis-tances that the pitch line is exactly eight inches, to mash intothe running ratchet or buttons below on the cable, whichare eight inches apart, and these arms project down andinto the
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1895
