. Electrical news and engineering. trument has recently been placed on the market whichgives the customer warning when the peak duration is pro-longed. This instrument is shown in the Figure. It consistsof a current clement, rheostat for control of the current ele- Small Geared Turbines. To drive small electric lighting oullits, exciter units forlarge alternators, or for direct mechanical drive, there hasbeen a demand for a line of steam turbines which would beconstructed along the same lines which give durability, caseof adustment, and high economy to the larger turbine meet this dem
. Electrical news and engineering. trument has recently been placed on the market whichgives the customer warning when the peak duration is pro-longed. This instrument is shown in the Figure. It consistsof a current clement, rheostat for control of the current ele- Small Geared Turbines. To drive small electric lighting oullits, exciter units forlarge alternators, or for direct mechanical drive, there hasbeen a demand for a line of steam turbines which would beconstructed along the same lines which give durability, caseof adustment, and high economy to the larger turbine meet this demand, which now comes principally from ournew merchant marine for lighting sets, the WestinghouseElectric & Manufacturing Company has developed a linewhich is being manufactured in sizes from 15 to 50 kw. fordirect-current service; from 30 to 50 kw. for alternating-cur-rent service, and from 30 to 100 for mechanical machine is a geared unit, very compact, and- of rugged Reversing WalerSealediOland. .»_^.«v- - . -4 ^- ^ Omjpeac \ MtyJfop. Stem Pinion Bearing. iStrmer J construction, as shown in tlic view ul the direct-current turbine operates at a speed of 7200 r, and it issuitable for both condensing and non-condensing is built for normal operation on any steam pressure from75 lbs. to 250 lbs., and for non-condensing operation on anyback pressure up to 20 lbs. It embodies the three-point sus-pension principle, being supported by two lugs on the gener-ator and one under the centre of the turbine, thus maintain-ing perfect alignment of the turbine, gear and generator. The generator is of the well-known Westinghouse SKtype, compound wound, with commutating poles. This designeinsures sparkless commutation even at heavy overloads with-out shifting the brushes—an important advantage since no June lo, 191S Til NEWS 35 attention is reiinired to adjust for changing loads. Coils areimpregnated by the vacuum proces
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