108 
MINUTES OF PEOCEEDINGS OF 
strips are broken up into short pieces. A plan of remedying this defect, 
suggested by the Assistant Chief Foreman of machinery, was carried out 
during 1873. It consists in dividing the press-box and block into two, 
so that the cakes produced are only of half the width, and suitable at once 
to pass through the pebble machine without being broken up. 
The following figure shows the method adopted. 
Fig. 11. Scale - 
Care, however, must be taken .after the cakes are pressed to keep them 
from buckling, which they will readily do when first pressed. 
A large amount of L.G. powder has been re-worked into pebble. The 
following are the first proofs of this powder, which was made from Curtis 
and Harvey's L.G. powder. The drying was 38 hours at 127° Fah. 
Stoving. 
Density. 
-, r . , Pebbles 
Moisture. tQ , 
Experiment. 
M. V. 
Pressures. 
Date. 
No. 
A. 
B. 
C. 
14. 7. 73 
1-806 
1-27 I 74 
29. 7. 73 
682 
1415 
13-5 
13-2 
13-8 
15. 7. 73 
1-803 
1-48 1 74 
a 
683 
1409 
13-2 
12-9 
13-0 
17. 7. 73 
1-803 
1-28 | 76 
n 
684 
1356 
11-6 
11-2 
10-3 
18. 7. 73 
1-804 
1-41 — 
i " 
685 
1419 
13-2 
13-2 
13.3 
These stovings were mixed and re-dried, and again* proved. 
Experiment. 
M. Y. 
-Pressures.. 
Date. . 
No. 
A. 
B. 
C. 
15.8.73 
697 
1454 
14-4 
14-7 
14-2 
