Bull. U. S. F. C. 1896, (To face page 340.) 
Plate XXIV. 
THE SIGSBEE WATER SPECIMEN CUP. 
a. Cylinder. 
h. Lower valve seat. 
c. Letaeliable upper valve seat. 
d. Upper poppet valve. 
e. Lower ]>oppet valve. 
/. Valve stem. 
<j. G-ermaii silver compression 
spring. 
h. The fratHe. 
i. German silver removable sleeve. 
Nomenclature. 
J. Brass pin. 
k. German silver shalt. 
1. Screw thread (44 to the inch). 
7n. Screw thread (44 to the inch ) 
n. German silver propeller. 
o. Hub. 
p. Inside screw thread (44 to the 
inch). 
q. Guide cap. 
r. Beveled lugs. 
s. German silver bushing. 
t. German silver screw caj) with 
milled liead. 
u. Beveled slots. 
V. Inside screw thread. 
w. Clamp htgs. 
cc. Clamp pivot screw. 
y. Phosphor bronze clamp wire. 
