392 
SEVENTH REPORT—1837. 
Tas Le VIII.—Scotch Iron.—Carron No. 3 Pig Iron, Hot Blast. 
ExpERIMeEnt 1. 
Depth of bar, *996 
Breadth of do. 1°002 
Distance between 
supports, 4 ft. 6 in. 
EXPERIMENT 2. 
Depth of bar, 1°006 
Breadth of do. 1°015 
Distance between 
supports, 4 ft. 6 in. 
EXPERIMENT 3. 
Depth of bar, ‘989 
Breadth of do. 1-001 
Distance between 
supports, 4 ft. 6 in. 
a 2 
2 S#|o9 
he ee ate 
2 gBal23 
al Fras 
28 | -068 
56.| 128) + 
112 | -250| -006 
168 | -378| :010 
224 | -519| -020 
280 | -662)| -036 
336 | 809) :052 
392 | -974| :077 
448 |1-142| -106 
476 |1-230 
504 |broke 
.. Ultimate deflec- 
tion = 1°312. 
Broke +} of an inch 
from the centre. 
2\)s¢| 2? 
qe |sa| ss 
+ |8e/88 
= |Zales 
Z as 
| 98 | -067 
56 | -126| ... 
112 | -241| -006 
168 | 371} .O11 
224 | -510| -020 
280 | -647| -033 
336 | -789| -049 
392 | -941| -070 
448 |1-104| -093 
504 |1-276| -129 
532 |1-377 
553 |broke 
.. Ultimate deflec- 
tion = 1°440. 
Broke 3 of an inch 
from the centre. 
2e|66E 
2 |32\es 
ic AF A x 
- 4 
28 | -069 
56 | 1382) + 
112 | +255} -005 
168 | -391)} -013 
224 | 532) -023 
280 | -681) -037 
336 | *8381} 055 
392 |1-:000| -079 
448 |1-174) -110 
476 |1:270 
504 |broke 
.. Ultimate deflec- 
tion = 1°356. 
Broke at the cen- 
tre. 
ExpzRIMENT 4. 
Depth of bar, 1°002 
Breadth of do. 1-002 
Distance between 
supports, 2 ft. 3in. 
Bo). plea 
a |s8|88 
@ |S2(o 
2 Ar Il|AS 
= A 
112| -032 
224| -061 
336 | -097 
448 | +128 
560] 161) + 
672 | -198)| -006 
784 | :232| -010 
896 | -273| -016 
952| -293] ... 
1008 | -318| -022 
1064 | -340 
1120 |broke 
.. Ultimate deflec- 
tion = °362. 
Broke 4 an inch 
from the centre. 
EXPERIMENT 5. 
Depth of bar, +993 
Breadth of do. -998 
Distance between 
supports, 2 ft. 3 in. 
a | 88/88 
3 | B3|3¢ 
Teo aiietos, |g 
3 |82|g8% 
= 4 
112 | -034 
224 | -069 
336 | -100 
448 | -137| + 
560 | -172)| -006 
672 | -208| -009 
784 | -244) -013 
896 | -290) -019 
952 | -312 
1008 |broke 
.. Ultimate deflec- 
tion = °332. 
‘Broke } of an inch 
from the centre. 
Carron No. 3, hot blast, is a harder iron, with less lustre than its predecessor 
the cold blast ; it is also worked with greater difficulty, and produces a harsh, so- 
norous sound under the file. It is an iron well adapted for mixing, and of value in 
heavy castings when used in conjunction with some of the best Welsh irons. 
Results reduced to those of bars 1°00 inch square. 
specitc | ‘elasticity. | Breaking | Ultimate Produer 0768 
Riemaripadarc ce @. @. | ean 
| Experiment Ist, bar 4 ft. 61) 7956 | 17813700 | 507-0 | 1:307 | 662-6 
in. between supports ...... 
Fae Ie ee tate ot] 7056 | 17949900 | 5383 | 1448 | 7795 
emp COR. 17855700 | 514-7 | 1-341 | 690-2 
Mean| 7056 | 17873100 | 520-0 | 1-365 | 710-7 
Pea ee ees ins | 0e7 | 4008 
Ee haw ee Hea a eas 1024-0 | -3297 | 3376 
Mean| ...... ae "10686 +3462 3707 | 
