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6.2 4.7

Tuesday, January 30,

305.5 287.2 So

293.1

18.3 Wednesday, January 31,

301.3
287.4

80 292.8 13.9

293.0 Difference of Averages 0.3 H.P. or 0.1 per cent. on Average of Test. New Oils.

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270.0
Difference of Averages 3.5 H.F. or 1.3 per cent. on Average of Test.

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Difference of Averages 6.7 or 9.8 per cent. on Average of Test.

New Oils.

1906.

66.4 67-3

24.2 7.0

Monday, April 23,

70.4 54.3

80

16.1 Tuesday, April 24, 69.9 65.2 40

4.7

66.8 Difference of Averages 0.9 H.P. or 0.1 per cent. on Average of Test.

Wheat Dressing Machinery Running Light Except for One Hoist Delivering

Grain to Silo. Mill Oils.

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or 14.1 per cent.

Power Test on the Entire Mill.

I.H.P.

MILL OILS. Both Engines,
New Oils. — Both Engines,

Reduction, .

364.7 336.8

27.9

or 7.7 per cent.

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Temperatures of Line Shaft Bearings in Wheat Dressing Mill.

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Summary. Power Reduction on complete mill

27.9 H.P. or 7.7 per cent. Reductions in Temperature on all bearings tested from

I to 35 °F. or in per cent. of the total heat due to friction from

..3.3 per cent. to 74.0 per cent. The grain operated upon was the same in both tests, viz., Pure Indian Wheat, but there was a 2 per cent. greater production favoring the reduction in power; this is, however, offset by the climatic conditions which were very much against the reduction, the balance of effect being probably a decreased power.

Test No. 16.

Test made at Sittingbourne, Kent, England.

POWER TEST IN A PAPER MILL.

Engine — Pollit and Wigzell. Tandem Compound. Corliss Valves on H.P.

Slide Valves on L.P. Revolutions 76 per minute. Steam Pressure

120 lbs. Superheated 100 °F. Machinery Operated — Line and Counter Shafting. 6 Pouchers. 4 Beaters.

4 Refiners. 3 Centrifugal Pumps. 6 Circulating Pumps Saw,

Elevator, Crane. Complete Test — 8 days. 4 indicators. 1,474 indicator cards. 7 operators. Paper Made — First Test, October 18 to 21, 1904, 182 tons, 2 cwt.

Second Test, March 21 to 24, 1905, 192 tons, 10 cwt.

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539.1
Difference of Averages 31.8 H.P. or 5.9 per cent. on Average of Test.

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503.3
Difference of Averages 41.9 H.P. or 8.3 per cent. on Average of Test.

I.H.P.

Result. Mill Oils and Greases. — Average of October 18, 19, 20, 21, 1904, . . 539. I New Oils. — Average of March 21, 22, 23, 24, 1905 (deduct Machine Correction of 14.2 H.P.), .

489.1 Reduction,

50.0 or 9.3 per cent.

Basis per Ton of Paper Produced.
Mill Oils and Greases. — Power per ton of paper produced,
New Oils Power per ton of paper produced,
Reduction,

1.H.P.

or 1.62 per cent.

2.96 2.48 0.48

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