. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . lumn bearing the chuck for the wheel is at the back or left-hand end, the right-hand or front one carrying the boring tool. The wheel chuck consists of three well-con-nected heavy arms, each having a movable clamp block operated by clamp screws meeting onthe common central circular rack. By applving a socket wrench to the square end of anyone of the three clamp screws, the three clamp blocks may be moved together or
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . lumn bearing the chuck for the wheel is at the back or left-hand end, the right-hand or front one carrying the boring tool. The wheel chuck consists of three well-con-nected heavy arms, each having a movable clamp block operated by clamp screws meeting onthe common central circular rack. By applving a socket wrench to the square end of anyone of the three clamp screws, the three clamp blocks may be moved together or apart, alike 58 014 WHEEL-MAKING MACHINES. and Jit the same time. The wheel is clamped at the rim while resting on planed plates, thussecuring a true position, being guided by three points of the rim. The wheel chuck has ahollow mandrel resting in two bearings, an adjustable rotating bearing being provided in itsrear, taking the weight of the chuck from its bearings. The cutter-bar for finishing thefnmt or end of the hub passes through the hollow chuck mandrel, and has its own bcaringsandpulley, and movement back and forth for cutting the crozing of the hub. It is opeiated. Fig. Automatic wheel-boxing machine. by a treadle placed near the operators stand at the front of the machine by the shifter bar controlling the chuck belt. The Automatic Wheel-boxing Machine shown in Fig. 7 is for boring and finishmg the hole in a wagon hub for receiving theboxes, doing this at one cut to anyregular or irregular shape, relievingthe center of the hub around thespokes, and cupping both ends of thehub to any desired shape. All theseoperations are done at one startingand stopping. There is a universalchuck fastened to a 6-in. sjiindle, allthree of the dogs of which are ac-tuated at once by turning with awrench any one of the three screwthreads, the range being for wheelsfrom 20 to 60 in. diameter. Thereis a boring bar, having lengthwiseand crosswise adjustment, for boringholes of any taper
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
