Results.

I.P.S.

263.41

Full Mill Load.
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 Spinning,
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.

.

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 m/m. 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.

Complete Test — 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.

Variation per
cent, on aver-
age of day.

11.0

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

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

Mill Oils.— Average of March 20, 21, 22, 1906, . . •321.79 (add
Machine correction of

19.57 = New Oils.- Average of June 26, 27, 28, 1906,

278.33 (add Machine correction of

.

.

I 2.2

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

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

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.