. Automotive industries . III ml of Ace engine, showing Guy rotary disk valve revolution of the disk, and as they need to be opened onlyonce every two revolutions of the crankshaft, the disks re-volve at only one-eighth the crankshaft speed. This lowspeed of rotation seems to be the chief novelty. The inletand exhaust ports are located adjacent to each other. Inletand exhaust ports lead to two concentric passages withoutlets on opposite sides of the cylinder head. The claims made for this valve are that it insures betterscavenging, gives a high low-speed torque, is self-cleaningand that lubric
. Automotive industries . III ml of Ace engine, showing Guy rotary disk valve revolution of the disk, and as they need to be opened onlyonce every two revolutions of the crankshaft, the disks re-volve at only one-eighth the crankshaft speed. This lowspeed of rotation seems to be the chief novelty. The inletand exhaust ports are located adjacent to each other. Inletand exhaust ports lead to two concentric passages withoutlets on opposite sides of the cylinder head. The claims made for this valve are that it insures betterscavenging, gives a high low-speed torque, is self-cleaningand that lubrication is positive. It is said that a Guydisk valve used in an engine which was driven more than 50,000 miles showed less than in. wear on the valvesurfaces. Silent operation and freedom from warpage areother important advantages Sectional view of Guy disk valve June 9, 1921 AUTOMOTIVE INDUSTRIESTHE AUTOMOBILE 1199 Devices for Controlling Headlight Glare Specially shaped reflector designed to keep beam of light below eye levelrequires no special lens. Ford cars are now being regularly equippedwith green visor lenses and device for focusing the bulb. THE problem of controlling headlamp illumination soas to effect efficient lighting of the road ahead ofthe car and yet prevent annoyance by glare to peopletraveling in the opposite direction is still with us. Al-most every conceivable means of attack has been madeuse of since the glare problem first became serious, about1910. At first absorbing media, such as amber coloredlenses, were used to quite an extent. Later came lensesof such formation as to break up or disperse the lightbeam, and finally it was decided that the proper principleto use was to control the direction of the beam of light,so it falls upon the road surface at a reasonable distanceahead of the car
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
