12 



BULLETIN 86, U. S. DEPARTMENT OF AGRICULTURE. 



Table 6. — Individual tests — Internal pressure — Continued. 

 i-INCH BARRELS— Continued. 



No. of 

 barrel. 



Num- 

 ber of 

 hoops. 



Pres- 

 sure. 



Rate of leakage. 



Remarks. 



23a 

 24a 



8 

 8 



Lbs. per 

 sq. inch. 

 6 

 12 

 16 

 20 

 30 

 4 

 8 

 16 

 18 

 22 

 24 



30 

 36 

 38 



Drops per 

 minute. 



Lbs. per 

 minute. 



Seepage through pores; leak at joints of head. 



Head bulged flush with chime. 

 Leak between staves at bilge. 

 Test discontinued. 

 Leak between staves at chime. 

 Seepage through pores. 



Leak between staves at quarter. 

 Head bulged flush with chime. 

 I^eak at joints of head; leak between staves at 

 bilge. 



Head breaking. 

 Head broke out. 



20 



84 

 180 









2.0 









4 

 12 













36 















Table 7. — Individual tests — Made-up barrels. 



INTERNAL-PRESSURE TESTS. 



No. of 

 barrel. 



Num- 

 ber of 

 hoops. 



Pres- 

 sure. 



Rate of leakage. 



Remarks. 





8 

 8 



Lbs. per 



sq. in. 



4 



10 



14 



16 



22 



26 



32 



34 



4 



6 



12 



18 



24 



26 to 36 



38 



Drops per 

 minute. 



Lbs. per 

 minute. 



Leak through defective joint in head. 

 Leak at defective joint ceasing. 

 Head bulged flush with chime. 



Head split at joint. 

 Seepage through pores. 

 Leak at chime. 



Head bulged flush with chime. 

 Leaking in broken stream. 

 Head forced out. 



115 







55 

 56 

 55 

 130 

















6 

 130 



180 























DROP TESTS. 



No. of 

 barrel. 



Num- 

 ber of 

 hoops. 



Height 

 of drop. 



Rate of 

 leakage. 



Remarks. 



SIDE DROP. 





8 



Inches. 

 12 

 18 

 21 

 33 



Lbs. per 

 minute. 



Leak at chime; stave slips. 



Stave cracked. 



Hoop slips. 



Two broken staves. 







21.0 



DIAGONAL DROP. 





8 



9 

 12 

 IS 

 21 





Leak at chime. 

 Stave slips. 

 Head failing. 

 Head broke out. 







7.7 



