The Stourbridge Observer, Cradley Heath, Halesowen & District Chronicle.
Stourbridge, West Midlands, England, 1886-01-30 00:00:00

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OF REGULATIONS REFERRED TO IN THE AB WE
116110 E AS TO THE TESTING OF CAST STEEL ANCHORS.
#l. The regulations as to the marking and certifying
I?' east steel anchors shall be the same as are now in
wlee for wrought iron anchors, but, in addition. the
Words cast steel" must be stamped on each anchor, or
each east steel portion of the anchor when it is made
ruore than one casting; and for the present the ex-
111411ation of and proof strain to be applied to, such
mieliors shall be the same as are now in force for
W.,"oabt iron anchors of equal weight, but the statutory
Proof strain must not be applied to any cast steel anchor
til the material of whieh it is made has been tested for
tensile strength and ductility and found satisfactory.
1.2. The tests for tensile strength and ductility must
mode at a public Proving Establishment, where it
1B intended to apply the proof strain.
3. There must be three pieces cast on each anchor,
or on
each piece of the anchor when it is made of more
"L a one casting, two of which must be tested for tensile
rsstrength, contraction of area, and elongation, and the
ruer must be bent while cold. These test pieces must
.6 fairly distributed over each casting.
4- No cast steel anchor, or portions of a east steel
anchor, should be received at a Proving Establishment
With all or any of the test pieces broken or cut off.
5- When a Superintendent of a Proving Establish
-
loofa receives a cast steel anchor for testing purposes he
,should at once have the test pieces cut off, then have
:bona prepared and tested, and, if the results are satis-
factory, he should, if the anchor seems sound. apply the
Proof strain.
1.6 The pulling pieces must be turned in the lathe to
flu. diameter for a length of 10in., and the elongation
taken in that length.
bending pieces must be machined to lin. square
fora length of 12in . and bent by screw or t Omaha
tossure on supports 10in. apart until they pass between
6 sOliports ; they are then, if uncra ked, to be bent by
rel'ang the ends together until they break, or until
their aides are parallel at a distance of 3in. apart,
roaasured inside.
tThe end of the hydraulic ram, or part that presses on
~ e test pieces, ificuld be semi•cylindrical, the radius
bu
ei6g lira., and its depth should bs at least 2in.
'• Ihe tensile strength of the test pieces should not
•Xoeed 30 tons per square inch of section.
The contraction of area of the 'test pieces at the
racture should not be le s than 4" per cent
,14 elongation of the test pieces in a length of 10in.
should not be less than 18 per cent.
.1 he bending test pieces shculd bear bending until the
I._l(lrs are parallel at a distance apart of 3iu., measured
e. without flaw or fracture.
..6. If the tensile strength exceeds 30 tons per square
1
. "oh of section, the results of the tests are to be re-
!larded as unsatisfactory, and unless two out of the three
!eats for ductiay. viz, contraction of area, elongation,
5011 bending, be in accordance with the requirements
ted herein, the results of the tests are also to be re-
garded as unsatisfactory.
9. Material which contains blow-holes cannot be
rwilerded as suitable, and the proof strain shouli not be
ibuPPlied in such cases; and when blow-holes are ebseived
:I„teo.ied snc'ior it should not be certified to.
u•L he anchor shackle and its I Olt, together with
such parts as forelocks, must be made of wrought iron.