. Automotive industries . two or more, equally spaced around the circumference nearthe periphery of the clutch are often employed. An excep-tion is the Thornycroft clutch illustrated in Fig. 5, whichemploys two laminated leaf springs, one on each side ofthe axis. These are fastened to the flywheel rim at eachend by bolts, and make contact at the center with tha ballthrust bearing. The thrust of the engaging spring isusually taken by the flywheel clutch unit; that is, the twoor sometimes the clutch alone are self-contained, and nothrust is transmitted to external members except on dis-engagemen
. Automotive industries . two or more, equally spaced around the circumference nearthe periphery of the clutch are often employed. An excep-tion is the Thornycroft clutch illustrated in Fig. 5, whichemploys two laminated leaf springs, one on each side ofthe axis. These are fastened to the flywheel rim at eachend by bolts, and make contact at the center with tha ballthrust bearing. The thrust of the engaging spring isusually taken by the flywheel clutch unit; that is, the twoor sometimes the clutch alone are self-contained, and nothrust is transmitted to external members except on dis-engagement. This is not true, however, in the ease of theDaimler ear, which has an exterior spring attached tothe chassis frame applying pressure to the clutch ami fix-wheel which must be taken up on the crankshaft. Thisconstruction is, of course, very much out of date. So far as British practice is concerned, it appears thatthere is not much to choose between well made com andplate types. Their respective merits are so nearly the. Fig. 5 The Thornycroft clutch same that even experienced users accept either type with-out question. In other words, the type of clutch used isnot a selling point in England. This can hardly be said toapply in this country, where perhaps the cone type hasnot been developed to the same extent as in British prac-tice. The unsatisfactory performance of the cone typein some instances, and other factors, have led to the de-velopment of other types here, notably the multiple disktype, which has advanced further and is more widely usedin this country than in Great Britain or ContinentalEurope. The Single Plate Type The single plate type of clutch is used widely in boththis country and Europe. When well made and properlyadjusted, it is smooth acting. It is of simple const ruc-tion and can be made with few parts; consequently itlends itself to economical production in quantity. As com-pared with the cone and the multiple disk types, heavierspring pressure is required
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear