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. Automotive industries . hile 84 per cent use pump circulation, which ismore positive in action, while the higher water velocityenables the use of a smaller andlighter radiator. Gravity fuel feed systems have de-clined in popularity since 1919, when79 per cent ofmodels used this sys-tem. It is still the most used, with64 per cent of the installations, butthe use of vacuum feed is rapidly in-creasing and is now applied to cent of the models listed. Grav-ity feed will no doubt continue in themajority as long as space for a grav-ity tank can be provided, for thevacuum and pressure system
. Automotive industries . hile 84 per cent use pump circulation, which ismore positive in action, while the higher water velocityenables the use of a smaller andlighter radiator. Gravity fuel feed systems have de-clined in popularity since 1919, when79 per cent ofmodels used this sys-tem. It is still the most used, with64 per cent of the installations, butthe use of vacuum feed is rapidly in-creasing and is now applied to cent of the models listed. Grav-ity feed will no doubt continue in themajority as long as space for a grav-ity tank can be provided, for thevacuum and pressure systems (thelatter of which has almost disap-peared) involves the use of elementswhich are not otherwise required.(Continued on page 348) GEAR BEVEL-REDUCTION l7<7ol lO-ToT^o February 17, 1921 AUTOMOTIVE INDUSTRIES THE AUTOMOBILE 335 TENDENCIES IN TRUCK DESIGN EOR 1921 »1 r-080 70ISO3040302010 0 % _2i^ TYPEOFCLl ——... -■ £.o»* ~~* •«.. 915 1916 1917 1918 1919 1920 192 GEAKSET LOCATIONAND NUMBER OF SPEEDS. 1915 1916 1917 1918 1919 1920 1921 1009080TO605040302010 & » ^»«,_RIGHT N *-«i=d 915 19 6 1917 1918 1919 1920 192 1UU908070 6050 •10JO2010 « rr«*S0> STEEL rn WE M 915 1916 1917 191& 1919 1920 192 100 FOUR CYLINDERS ^ST^BU3CK , NUMBER OF CYLINDERSAND HOW CAST ^^rTT^fe ^^ **—■-. CAST SEPARATELY •■■••■*■*■■■■■*■••■»■•..•.•.«.••• 1915 1916 1917 1918 1919 1920 98070£0 50403020[0 n 0 84%16% 55 ■ PUMP -Wi \TLR riDCI T \ lUiV 915 1916 1917 1918 1919 1920 192 90 8070605040JO20 !. 64? . £RAW>. -••.... J-.^ FUEL FEED V \cuur PRESS URE 95 19 16 1918 BI9 J920 ion9080706050405020100 **•■«•». ^Pqk *•E OF WHEE1 c ^2£+ 915 1916 1917 1918 1919 1920 192 336 AUTOMOTIVE INDUSTRIES February 17, 1921 THE AUTOMOBILE Specifications of ELEC. SYSTEM Acason H Acason L
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear