. Automotive industries . jolting. The lengths ofthe wheelbases and of the couplings influence the driv-ing results so much, however, that very little can besaid in terms of generality without a likelihood of errorsor erroneous impressions. No sharp line of demarca-tion separates the free-trailing outfit from the forced-tracking outfit. Excepting only the truck alone and thetractor cab with semi-trailer, which are pure free-trailers, all outfits have couplings which force the nextpair of wheels more or less and couplings which the results are a blend more or less happily con-ceived. T
. Automotive industries . jolting. The lengths ofthe wheelbases and of the couplings influence the driv-ing results so much, however, that very little can besaid in terms of generality without a likelihood of errorsor erroneous impressions. No sharp line of demarca-tion separates the free-trailing outfit from the forced-tracking outfit. Excepting only the truck alone and thetractor cab with semi-trailer, which are pure free-trailers, all outfits have couplings which force the nextpair of wheels more or less and couplings which the results are a blend more or less happily con-ceived. The driver requires practice with each type ofoutfit and with different dimensions of units, and theonly available auxiliary and part substitute for suchpractice would seem to be the study of diagrams, undersuitable direction, the diagrams being preferably on alarge scale with specified dimensions and distances, butwith all superfluities of construction omitted. Perhapsit could be taken for granted that a somewhat general. I(D J& it m sQ iCD 4 % TO. 19 Flo. 20 F1C. 21 Figs. 15 to 21—Symbolic figures adapted for use inplotting curves for the hauling outfits which they rep-resent. In Fig. 16 the small overhang shown for thefifth-wheel coupling should be changed if the Investi-gator has a different position of the coupling In other dimensions are similarly subject to 18 and Fig. 21 produce very similar curves, withthe same dimensions for vehicles and couplings, theonly material difference being that the wheelbase InFig. 18 Is constant, while that In Fig. 21 fluctuatesslightly, getting shorter at sharp turns, with the rearbolster sliding as well as swivelling In Its base. Thepositions of bolsters In the dollies Is not indicated, asit does not Influence the tracking, but In Fig. 19 thepintle hook Is supposed to be so nearly In line withthe front bolster that no provision need be madeagainst longitudinal shifting of the load, or. If the loadIs lashed, the hook c
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
