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Frictional test of Unknown [Mixed] Oil, on May 25 and 26, 1880. Rev. per minute 485.06, 5 lbs. pressure per sq. inch.

Velocity

of rubbing surfaces 545.89 feet per minute. No. of sample 25. No. trials 4.

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Frictional test of Downer Oil Co., Champion Oil, on May 27, 1880. Rev. per minute 508.69, 5 lbs. pressure per sq. inch. Velocity of rubbing surfaces 572.27 feet per minute. No. of sample 28. No. of trials 5.

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Fluidity Experiments. Valvoline Spindle Oil. Leonard & Ellis.

Sample 2.

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124.25

151.75

185.50

Temperature.

Seconds required
to empty pipette.

288

Temperature.

Fluidity Experiments.

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150.

242.5

172.

285.

203.5

345.

Seconds required
to empty pipette.

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Fluidity Experiments. 32° Extra Machinery Oil.

Co. Sample 8.

Downer Oil

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230.

290.

345.

Seconds required

to empty pipette.

Seconds required

to empty pipette.

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Ellis. Sample 11. Fluidity Experiments. Valvoline White Spindle Oil. Leonard &

Seconds required
to empty pipette.

150

93.50

125.50

186.5

140

106.

150.5

229.

Fluidity Experiments.
Ellis. Sample 12.

Valvoline White Loom Oil.

Leonard &

Temperature.

Seconds required
to empty pipette.

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Temperature.

Seconds required
to empty pipette.

284.

353.

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