ExPERIMENT 1. 
Depth of bar, 1:042 
readth of do. 1°021 
Distance between 
supports, 4 ft. Gin. 
Weight of bar, 5 ft. 
long, 163 lbs. 
“Weight in Ibs. 
Deflection in 
inches. 
Defiection, 
Load removed. 
1.*. Ultimate de- 
lection, = 1:394. 
Broke 13 inch 
|from the centre. 
‘ 
| 
| Gin. between 
EXPERIMENT 2. 
Depth of bar, 1°061 
Breadth of do. 1:018 
Distance between 
supports, 4 ft. 6 in. 
Weight of bar, 5ft. 
long, 16 lbs. 2 oz. 
Weight in lbs. 
Deflection in 
inches. 
Deflection, 
Load removed. 
.. Ultimate deflec- 
tion, = 1-452. 
| Experiment Ist, bar 4 ft. 
{Experiment 2nd, bar 4 ft, 
| Gin. between supports..... 
| Experiment 8rd, bar 4 ft. 
| 6 in. between supports..... 
Experiment 4th, bar 2 ft. 
3 in. between supports..... 
xperiment 5th, bar 2 ft. 
3 in. between supports..... 
Broke at the cen- 
EXPERIMENT 3. 
Depth of bar, 1°04 
Breadth of do. 1:02 
Distance between 
supports, 4 ft. 6 in. 
Weight of bar, 5ft. 
long, 15 lbs. 9 oz. 
Z|) | ¢8 
fe su4|.2o 
-= |.2%|/og 
| 28 | Seo 
‘Oo Oo As 
e/a TS 
28 | -072| ... 
56 | 125) + 
112 | -269]-011 
168 | -420) -024 
224 | -584 | -042 
280 | -748 | 064 
336 | -924) -085 
392 |1:105 | -123 
448 1-315 | -185 
462 |broke 
.. Ultimate deflec- 
tion, = 1:364, 
Broke 34 an inch 
tre. 
Modulus of 
Specific | elasticity in 
gravity. | lbs. per square 
inch. 
6:951 
supports. .... } 6:916 14680000 
} 6:916 13947000 
} 7:038 14285000 
Mean...| 6-955 14304000 
from the centre. 
ON STRENGTH AND PROPERTIES OF CAST IRON, 
ExrrERIMENtT 4, 
Depth of bar, 1-076 
Breadth of do. 1:04 
Distance between 
supports, 2 ft. 3 in. 
Fs Ge a a 
ca . > 
2 | 2838 
» [s) o Vv 
Pea dea SP 
°o oO Q 3 
B |A 4 
112] -028 
224 | -060 
336 | -092 | + 
448 | -125 | 006 
560] +162 | -008 
672 | -203 |-010 
784 | -242 | -016 
896 | -290 | -025 
952 | 316 
1008 |broke 
.". Ultimate deflec- 
tion, = ‘341, 
Broke 12 inch 
from the centre. 
.. Ultimate deflec- 
381 
Taste I.—North Wales Iron.—Coed-Talon No. 2 Pig-Iron, Cold Blast. 
EXpERIMENT 5. 
Depth of bar, 1-062 
Breadth of do. 1:009 
Distance between 
supports, 2 ft, Sin. 
a |S Pas 
als als = 
s Fol. 
3) 3s] 36 
oo |e | Beg 
‘oO vo QA os 
BIA 4 
112 | -030 
224 |-064 | 4 
336 |-096 | -005 
448 |-134 | -007 
560 | +172 |-010 
672 |-215 |-014 
784 |-258 | -020 
896 | -308 | -028 
952 |broke 
tion, = °332. 
Broke = an inch 
z 
from the centre. 
The microscopic appearance of this iron is a deeper grey colour than is exhibited 
in the Carron No. 2 cold blast; itis also more open than it is in the centre of the bar, 
with a diminution of the crystals as they approach the exterior skin. It is less ductile 
than the hot blast, and inferior to it in the power of resisting impact. 
: Results reduced to those of bars 1:00 inch square. 
ee 
Breaking} Ultimate z roduct 6 x 
si deflection g z sisting i a 
@). (d). pact. 
404-2 | 1-453 587-3 
403-1 | 1540 | 620-7 
4188 1-419 594-2 
408-7 | 1-470 | 600-7 
‘367 807-2 
353 295°3 
360 296°2 
