. Electric railway journal . uld be prescribed by any of the state commissions, andin such case there should be excluded charges for renewalsfrom all the accounts affected by the introduction of thisaccount. Such expenditures for renewals will then becharged direct to an appropriate replacement account, main-tained by the prescribed charges to this account. The association never has gone on record as approvingof any depreciation account and has only provided titlesthat may be used where a company is compelled to set upsuch an account by the authorized state authorities. H. L. Wilson, Chairman
. Electric railway journal . uld be prescribed by any of the state commissions, andin such case there should be excluded charges for renewalsfrom all the accounts affected by the introduction of thisaccount. Such expenditures for renewals will then becharged direct to an appropriate replacement account, main-tained by the prescribed charges to this account. The association never has gone on record as approvingof any depreciation account and has only provided titlesthat may be used where a company is compelled to set upsuch an account by the authorized state authorities. H. L. Wilson, Chairman of Committee on a Standard Classification ofAccounts. A THREE-POSITION SWITCH INDICATOR The latest type of switch indicator to be developed bythe Union Switch & Signal Company for indicating whethera train has entered the block within which the switch islocated provides for three positions of the miniature sema-phore blade with which it is equipped. The instrument,which is shown in the accompanying illustration, is oper-. Three-Position Switch Indicator ated by a Z-shaped armature which makes a partial rota-tion in a magnetic field and thus moves the semaphore bladeto the position determined by the condition of the controlcircuit. Both armature and field cores are made of laminated case has been so designated that there is room abovethe mechanism for two lightning arresters and the bottomhas been arranged for mounting the indicator on a post nearthe switch stand. The front may be equipped with a plainglass, wire glass or plain glass with a wire shield, the wirebeing cast into the frame which holds the glass in frame, together with the mechanism, is secured to thecase by screws which can be removed only from the insideof the case. The door carries a projecting pocket on its lower edgewhich incloses the head of a set screw fastening the case toits support, and this makes it impossible to loosen the setscrew and remove the instrument without first opening thedo
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Keywords: ., bookcentury1900, bookdecade1900, bookidelectricrailway411913newy
