. . .

.;:.:.";.:.«.::.: .- " - • ..-

A TABLE O ¥

mfENSILE STRENGTHS

OF Rl d At.

Book "sHkCpfyrightN

1.*

COPHUGHT DEPOSIT.

A TABLE OF

TENSILE STRENGTHSOF RUBBER

,

BY

HENRY W. JACOBSEN\ N I)

JOSEPH E. PARTENHEIMER

OF

The Fisk Ri bber Company.

COPYRIGffl L919

HHNRY \y:l..iam jacoiisen

DEC -6 1919

)CI.A5a5 9lil

INTRODUCTION.

The dimensions used in this table are those of

standard test pieces recommended in Bulletin No.

38 of the United States Bureau of Standards.

The tensile strength of rubber is found by divid-

ing the pounds pull registered at the breaking

point by the area cross section of the test piece.

Each page of the table is computed for a

thickness cross section. This dimension is found

at the top of the page and for a range of .120 in.

to .170 in. The first horizontal line contains the

the widths of cross section ranging from .225 in.

to .235 in. The vertical column at the left con-

tains the pounds pull registered at the breaking

point. The other columns contain the tensile

strengths in pounds per square inch.

To find a tensile strength turn to the page

of corresponding thickness of section. In the

column under the width of the section and op-

posite the pounds required to break the test piece

will be found the tensile strength. Thus: Atest piece .134 in. x .232 in. broke at 98 lbs.,

having a tensile strength of 3152 lbs. per sq. in.

On page 15 for thickness .134 in the column under

.232 and opposite 98 will be found tensile strength

3152.

H. W. Jacobsen

J. E. Partenheimer

AREAS OF CROSS SECTIONS

22.> 226 228 22i> 2.50 12:51 2.-W 234 2:55

20

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225 226 227 228 229 230 231 232 233 234 235

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231923522385241S245124S42517255025842617

230S234123742407244024732506253925722 60 5

229S233123642397242924622 4 95252825612594

22SS2321235423S62419245224S4251725502582

2278231123432376240924412474250625392571

226S2301233323 6623 9 8

24302462249525282 5 60

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2673270727402773280728402874290729402974

26622695272S27622795282828612895292S2961

265026832716274927S22S152S4S28812915294S

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17(1

LIBRARY OF CONGRESS

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