Bauhaus-Universität Weimar

Titel:
L. E. Knott Apparatus Company: Scientific Instruments, Catalogue 26
Person:
Knott, L. E.
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit13684/153/
148 
L. E. KNOTT APPARATUS COMPANY 
91-335 MOUNTED LEAD PLATES (See Millikan & Gale, Fig. 277) 
Per pair $1.90 
UNIT-SEALED 
GLASS STORAGE CELLS 
Fully Charged 
Plates hand pasted, uniform in weight and finish. Strong soft wood separators run full 
length of plates. Plates and separators are supported at the bottom by a heavy cast lead bridge* 
properly insulated, which carries the weight of the plates, thus avoiding breaking of the cover 
and displacement of the plates. Connectors are heavy, the negative longer than the positive to 
facilitate assembling to form a battery of two or more cells 
(see illustration, 16 cells). Sealing compound will not crack 
nor will it become too soft in hot weather. It adheres to the 
glass jar and to lead terminals, prevents any escape of acid, 
retards evaporation and avoids danger of foreign substances 
entering the cell. The glass jar is a perfect insulator and 
permits the general conditions of the cell to be seen at all 
times. 16 Cells— No. 91—329 
Each cell is shipped fully charged ready for use. Set up on shallow wooden trays 
filled with sand. Short strap posi¬ 
tive, long strap negative 
91-327 -, 3-plate type, 8 ampere hours at 8-hour rate, 12 ampere hours at intermittent rate. Jar measures 
outside, 4X234X6J4 inches high........................................................ $4.50 
91-328 --, 5-plate type, 16 ampere hours at 8-hour rate, 23 ampere hours at intermittent rate. Jar meas¬ 
ures outside, 4X234X6J4 inches high...................................................... 5-76 
91-329 --, 7-plate type, 66 ampere hours at 8-hour rate, 95 ampere hours at intermittent rate. Jar meas¬ 
ures 6J4X3X9J4 inches high. (Illustration shows a battery of sixteen of these cells)............ 12.00 
PORTABLE STORAGE BATTERIES 
Fully Charged 
91-337 FOUR-CELL PORTABLE STORAGE BATTERY. The construction of the 
individual cells is the same as described above, but the cells are mounted 
in hard rubber jars and assembled in wood cases, finished with black acid- 
resisting paint; 9 plates per cell, 88 ampere hours at 8-hour rate, 128 ampere 
hours at intermittent rate...........................................$75.00 
91-338 --, 11 plates per cell, 110 ampere hours at 8-hour rate, 160 ampere hours at intermittent rate. . 86.00 
91-339 ---, 13 plates per cell, 180 ampere hours at 8-hour rate, 260 ampere hours at intermittent rate. . . . 115.00 
Nos. 91-337 
91-339 
No. 91-327 
Rating of Batteries 
Two ratings are given for each of the cells listed above. Ratings have usually been given on our 8-hour discharge 
basis which is a continuous discharge over one 8-hour period. The Intermittent Rating is the discharge over a 72- 
hour period with three rest periods. 
TUNGAR RECTIFIERS. See page 180.
        

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