. Automotive industries . ous operation of the four brakesby pedal or by lever (Fig. 5), but unlike the Delage thereis no equalizing mechanism. After long road tests of thetwo types it is difficult to determine which has the advan-tage in this particular respect. On the Darracq it is nec-essary to adjust the two front and the two rear wheels to-gether, but once adjusted there appears to be no tendencyfor them to wear unevenly. On the Delage, on the otherhand, any differences between the two wheels forming apair will be taken care of by the differential. Obviouslythe Darracq is a cheaper produc
. Automotive industries . ous operation of the four brakesby pedal or by lever (Fig. 5), but unlike the Delage thereis no equalizing mechanism. After long road tests of thetwo types it is difficult to determine which has the advan-tage in this particular respect. On the Darracq it is nec-essary to adjust the two front and the two rear wheels to-gether, but once adjusted there appears to be no tendencyfor them to wear unevenly. On the Delage, on the otherhand, any differences between the two wheels forming apair will be taken care of by the differential. Obviouslythe Darracq is a cheaper production job. Hispano-Suiza is the only one making use of a relaybrake, as shown in Fig. 6. This device has been adoptedin order to reduce the effort required to apply the brakes,and is successful to such an extent that the pressure re-quired on the brake pedal is hardly any more than that forthe accelerator. On the Hispano-Suiza all four brakes areapplied by pedal, but the rear wheel brakes can be appliedseparately by Isotta-Fraschini brakes by means of pedal on all fourwheels, or by means of the central lever, shown in Fig. is rather special with the use of rear wheeldrums having twice the width of those at the front andcontaining double brakes, one set being connected up tothe front and operated by pedal, and the second set beingcontrolled by hand. There is no brake on the layout is shown in Fig. 8. There is a certain historic interest in noting that one ofthe first front wheel brakes was used on the Dufour truckin 1904 (Fig. 9). This brake was very defective, for theaxis of the steering pivot being a considerable distancefrom the point of contact of the wheel with the ground,there was a reaction on the connecting rod when thebrakes were applied, and when one wheel was on dryground and the other on a wet patch, there was consider-able reaction on the steering gear. When front wheel brakes came up again in 1910, on theAllen-Liversedge, the
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
