LABORATORY SUPPLIES AND CHEMICALS 



43 



1570 to 1572 



1574 to 1578 



1570 

 1571 

 1572 



1574 

 1576 

 1578 

 1580 

 1582 

 1584 

 1586 



BLOWERS Fletcher's Foot Blower, simple, compact, portable and powerful, 

 giving a steady blast of air The step is low and is convenient for the 

 operator whether standing or sitting. A rubber disk forms the air reser- 

 voir and equalizes the air pressure. 



BLOWER. No. 9, diam. of reservoir, 7% inches $ 6.50 



BLOWER. No. 9a, diam. of eservoir, 9 inches 8.50 



BLOWER. No. 9b, diam. of reservoir, 11 inches 13.00 



Same, mounted on legs, making the reservoir less liable to injury. 



BLOWER. No. 10, diam. of reservoir, 7% inches 7.50 



No. lOa, diam. of reservoir, 9 inches 9.50 



No. lOb, diam. of eservoir, 10 inches 15.00 



Extra rubber disk for Nos. 9 or 10 75 



Extra rubber disk for Nos. 9a or lOa 1.25 



Extra rubber disk for 9b or lOb 1.75 



Extra net for Nos. 9 or 10 50 



Extra net for Nos. 9a or lOa 50 



Extra net for Nos. 9b or lOb .75 



BLOWER. 

 BLOWER. 

 BLOWER. 

 BLOWER. 

 BLOWER. 

 BLOWER. 



1586(a) BLOWER. 

 1586(b) BLOWER. 



1588 



1589 



1590 



1588 



1589 



1590 



BLOWER, Hand. Composed of two pure gum rubber bulbs, one covered 



with net, for continuous blast $1.50 



BLOWER. Rotary Compressor. A very small and convenient device for fur- 

 nishing air pressure, operated by electric or other motor, requiring very 

 little driving power. Made in three sizes. The small size will furnish 

 sufficient air pressure for two or three Blast Burners and develops at 1,000 

 R. P. M. about 10 Ibs. pressure per square inch. The larger sizes give a 

 greater volume of air and may be used in operating gas heated crucible 

 furnaces, etc. Size No. 1 requires l /fa H. P., and sizes No. 2 and 3 require 

 Yt H. P. motor. 



Size No i :: .3 



Height, inches 3 4 5 



Each .Net $7.50 12.50 15.00 



BLOWER. Prof. Richard's water blast, direct connection is made with 

 Prof. Richard's filter pump No. 3690, producing simultaneously, 

 vacuum and blast. With one filter pump $9.00 



