. Steam engines, a thorough and practical presentation of modern steam engine practice . sses and strainsdue to sudden jolts, whichwould be detrimental to thedurability of the machine asa whole. Steering Gear. The engineis guided by the hand wheel10. It will be noted that achain is connected to thefront axle on either side ofthe pivotal point. Thischain wraps around a camarrangement on the shaftwhich carries the small gear wheel 8. The wheel 8 is in mesh withthe worm 9, which may be turned by the hand wheel 10. If thedriver when moving forward should wish to turn to the right, forinstance, he
. Steam engines, a thorough and practical presentation of modern steam engine practice . sses and strainsdue to sudden jolts, whichwould be detrimental to thedurability of the machine asa whole. Steering Gear. The engineis guided by the hand wheel10. It will be noted that achain is connected to thefront axle on either side ofthe pivotal point. Thischain wraps around a camarrangement on the shaftwhich carries the small gear wheel 8. The wheel 8 is in mesh withthe worm 9, which may be turned by the hand wheel 10. If thedriver when moving forward should wish to turn to the right, forinstance, he would turn the hand wheel so the wheel 8 would be?driven counter-clockwise, and in so doing the chain 6 would beshortened, the chain 7 lengthened, the wheel 5 would be cut in, andthe machine would turn to the right. If it was desired to go in theopposite direction, the reverse operation would be carried out, that is,gear 8 would be revolved clockwise. It is sometimes difficult to operate the steering gear by hand,especially in large traction engines and in places where a heavy load. Fig. 42. Friction Gear Device for SteeringTraction Engine STEAM ENGINES 55 is being driven over rough ground; hence, some engines are providedwith a friction gear device. This attachment, Fig. 42, is exceedinglysimple, and when it is used the engine furnishes power to guide consists of a shaft 2 extending from the worm gear i to a bracketon the side of the boiler in front of the main shaft. On top of thisvertical shaft is a horizontal miter gear 3 arranged to engage alter-nately with two vertical gears, one at the right 5 and the other at theleft 4- These vertical gears are on a shaft run by a chain of smallgearing 6 from the engine shaft. They are thrown in or out, at thepleasure of the operator, by means of a shifting yoke which is workedby a straight rod extending back to the right-hand side of the engi-neer. A lever at the end of this rod is within easy reach all the moving it
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteamen, bookyear1920
