. Cassier's magazine. ELS FOR MECHANICAL VEHICLES 467 rings, it is now being employed byseveral steam waggon makers. Another type is constructed of mildsteel plates cut in such a way that allthe spokes from each side of the hubare in one piece, and are rivetted toboth hub and felloe. This wheel,made by the Lancashire Steam MotorCompany, Ltd., is illustrated in Fig. 7. A variation is to use separate platespokes and to rivet each to bothhub and felloe. With each of these types thearrangement of spokes mayvary. Sometimes the spokesfrom opposite ends of thehub are butted together at thefelloe, but
. Cassier's magazine. ELS FOR MECHANICAL VEHICLES 467 rings, it is now being employed byseveral steam waggon makers. Another type is constructed of mildsteel plates cut in such a way that allthe spokes from each side of the hubare in one piece, and are rivetted toboth hub and felloe. This wheel,made by the Lancashire Steam MotorCompany, Ltd., is illustrated in Fig. 7. A variation is to use separate platespokes and to rivet each to bothhub and felloe. With each of these types thearrangement of spokes mayvary. Sometimes the spokesfrom opposite ends of thehub are butted together at thefelloe, but more often they arealternated and interlaced, being sufficiently spaced to be really effec-tive in preventing spinning and skid-ding, they are liable to damage theroads, and therefore conditions 4 and 5are not both complied with. Number7 may be considered fairly well satis-fied in view of other issues the case of number 6, however, thewooden wheels are only fairly satis-factorv, while all the forms of all. FIG. 9. CAST STEEL WHEELS ON ONE OF THE WAGGONS OF THE THORNYCROFT STEAM WAGGON LTD. taken to the opposite of two tee ringsat the felloe. A wheel of this type ismade by the Thornycroft Steam Wag-gon Company, Ltd., of Basingstoke,and is shown in Fig. 8. Another type of all-metal wheel,shown in Fig. 9, which is employed bythe Thornycroft Steam Waggon Com-pany, and which is coming into favourwith other manufacturers, is cast com-plete in one piece from a special gradeof crucible steel. This has no separateouter tire, and there are no rivets inits construction; if cross strips areneeded for gripping purposes, they arecast on with the wheel. All of these wheel types complywith numbers 1, 2 and 3 of the condi-tions previously enumerated. If thetires are provided with cross strips steel wheels must be reckoned dis-tinctly unsatisfactory. The continualhammering to which they are subject-ed when travelling over setts, as inLancashire for instance, causes con-stant t
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