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Results.

Full Mill Load.

I.P.S. 263.41

MILL OILS.— Average of June 14, 15, 16, 1905, (add Machine Correc

tion of 5.81 P.S.). .
New Oils.- Average of September 6, 7, 8, 1905, (add Machine Correc-

tion of 13.36 P.S.)
Reduction, ..

or 9.1 per cent.

239.35

24.06

.

Engine Transmission and Ring Spioning,
Mill Oils.— Average of June 15, 16, 1905,
New Oils.- Average of September 7, 8, 1905,
Reduction,

or 14.8 per cent.

114.03 97.11 16.92

Conclusion.

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The full load on this Cotton Mill was reduced by means of better lubrication,

24.06 P.S. or 9.1 per cent. The load on the Engine, Transmission and Ring Spinning was reduced, . ...

16.92 P.S. or 14.8 per cent. The load and the balance of the mill was reduced, 7.84 P.S. or 5.2 per cent. The speed of the Mule Spindles was increased,

3.6 per cent. The speed of the Ring Spindles increased, .

0.3 per cent. The speed of the Engine increased, . . .

1.55 R.P.M.or 1.3 per cent. This would represent an increase in production, as the production of a mill is largely dependent upon its speed.

Both the Relative Humidity and Temperature are against a Reduction in Power.

.

.

Test No. 10.

Test made at Elberfeld, Germany.

POWER TEST OF A WORSTED SPINNING AND WEAVING MILL.

Engine

Made by Gebruder Selzer, Winterthur, Switzerland, 1890. Tandem Compound Condensing. Cylinders 475 m/m and 570 mm. Hub (Stroke) 1,050 m/m. Steam Pressure 8 to 9 atmospheres. Temperature at Cylinder 260-270 °C., 70 R. P. M., developing about 320.0 P.S.

Machinery Operated Preparing, roving, washing, weaving and finishing

machinery for preparing and manufacturing woolen and worsted goods.

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9 days. 4 indicators. 1,764 indicator cards. 3 operators.

The first test was made upon the basis of very cheap American and Russian Oils. The engine was overloaded and more machinery was to be put in the mill. It was a question whether to buy a 30 P.S. electric motor, or buy better lubricating oil. The following test was made to show the effect of changing the oil. As the second test was made in the summer, and the temperature in and outside were so greatly in favor of the reductions shown by the second test, it was decided to run a third test to secure data in regard to the effect of the temperature and humidity. An attempt will be made to show this effect, though it must be remembered that the effect has been on this one mill, and it is not claimed to represent what will follow in every mill.

First Test.

Mill Oils.

Full Mill Load.

1906.

Maximum

P.S.

Minimum

P. S.

Number of

Cards.

Average

P, S.

Variation in

P.S.

Variation per cent, on aver

age of day.

Tuesday, March 20,
Wednesday, March 21,
Thursday,

March 22,

329.4 344.6 340.6

305.8 311.0 295.3

160 160 160

319.0 325.5 320.8

23.6 33.6 45.3

7.4 10.3 14.1

321.79 Difference of Averages 6.5 P.S. or 2 per cent. on Average of Test.

Second Test.

New Oils.

1906.

Variation per
cent, on aver-
age of day.

Tuesday, June 26,

304.8
263.7
160 284.0

41.1

14.5 Wednesday, June 27, 291.8 256.7 160 276.6 35.1

12.7 Thursday, June 28,

290.2 260.2 160

274.3
30.0

11.0

278.3
Difference of Averages 9.7 P.S. or 3.5 per cent. on Average of Test.

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Machine correction of
Reduction,

or 14.9 per cent.

I 2.2

290.53

50.83 37.1 °C.

.

Engine and Transmission.
Mill Oils.— Average of March 20, 22, 1906,
New Oils. — Average of June 26, 28, 1906,
Midday Reduction,

or 19.1 per cent.

I.P.S. 118.24 95.67 22.57

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Temperature of Guide on Engine.
Readings made every half hour for three days during test.

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Temperature (Actual due to Friction) Guide of Engine.
Mill Oils.— Average of three days,
New Oils.— Average of three days, .
Reduction,

or 31.5 per cent.

25.4

11.7 °C.

Spindle Rail Temperatures. These temperatures were taken from three frames every half hour for each of the six days of test. The room temperature at each frame was also taken. The difference between the temperature of the spindle and the temperature of the room is the heat due to friction.

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Tuesday, March 20,
Wednesday, March 21,
Thursday, March 22,

Engine. . 69.25 69.23 69.28

SPINDLES.
Second Floor Rev, of Spindles
Average for

to one the Test.

of Engine.

69.25

1982

28.60

New Oils.

Tuesday, June 26,
Wednesday, June 27,
Thursday, June 28, .

69.43
69.45
69.45
69.44

2012

29.0

Increase,

0.4 R.P.M.

or 1.4 per cent.

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