COXXETO 



59 



half plan, and half hurijumUl section. The draught or clearance U 



:>M .-fan inch. 



BOOK J5W. At (a), fig. 5S, i shown what U known a* a box 



and for a connect The par* orreapond* to the 



loos . t)n< but example U here forged 



ih. connecting r<\. In thU form the brass liuah u provided 



li a flanr ull muml mi one *id opposite aide 



ne end ; thU U to allow of the 



ban! .in the end of the rod. The construction 



be i-u.li will | M . u.idorttood by reference to the sketch ahown 



i two parta, which are pressed tightly to- 



gether by meant of a cotter. ThU cotter ia prevented from 



In. u'k i.y two aet screws, Each set acrew ia cot off 



square a :it, and preaaea on the flat bottom of a very 



shallow groo\ < <-ootter. 



and end.s hox end are turn 



the lathe at the aame time aa the rod its accounU for 



th. -ur\M s.-t-ti.ini of theae parta. 



s clear from t] f a boi nd that 



only suitaMf for un ..\rrlnnii: iT.ink. 



EXK1CIBK53: Locomoti iiown 



a c ii outni.lo r\hp..l r locomoti\ I the 



crank- |in end. and ) the croat-head end. The end (a) has jnst 

 bean deaeribr.l he head 'box . add that 



in tin, partimlnr .-xunipl- the bnuui honh i- 'ii white metal 



aa thown. ami coiiHtnirti.> n of th<> ,.il i-.\ U the ame aa 



that on the coupling rod end thown in fig. 54. The . 



.1. and throng ; MMea the croaa-head pin. 



A separate dimensioned drawing U ahown at (<f). Obearve 



th:ii tii.- tapered parta A and 13 of thin pin are parts of the aame 



con. t U prevented by a small key as shown. 



crow-head pin need not be drawn separately, and the isometric 



he Inifth .ay be on.. all the other 



views shown are to be drawn to a scale of 6 inches to a foot. 



Manna Conner* ' rra of connecting rod 



shoxv s that used in marine engines, bat it ia also 



na*<i riffinc*. A B is tin- mink-pin end, 



and C the crow-head end The <>n<l A H if* forped in one piece, 



