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A. DAIGGER & COMPANY, CHICAGO, U. S. A. 



HEAVY TYPE VACUUM OVEN 



3581 (a) 



3581 (b) 



3581 (a) OVENS, Heavy Type Vacuum; this oven is used by the Bureau of Chemistry 

 of the U. S. Department of Agriculture, Sugar Laboratories and else- 

 where, is made of heavy seamless brass tubes with 1" steam space. 

 Door and front and rear ends heavy brass castings, and is mounted 

 on a heavy strong stand of black iron. 

 Price, as shown $175.00 



3581 (b) OVENS, Drying Oven, double wall, for drying in current of hydrogen, 

 etc., substantially made of heavy copper and provided with one 

 shelf; outside dimensions, 18 inches long by 10 inches diam-. 

 eter $55.00 



3582 



3582(b) 



3582 OVENS, Drying Oven, Rammelsberg, made of polished copper, size 6 



inches high by 5 inhces diameter $ 5.00 



3582 (a) OVENS, Drying Oven, Rammelsberg, made of polished copper; size 7 



inches high by 6 inches diameter 6.00 



3582(b) OVENS, Drying Oven, double wall, Rammelsburg, made of heavy seam- 

 less copper, for Hot Air, Water, Oil or Paraffine. 

 Inside dimensions, 6 inches diameter by 7 inches deep. 

 Outside dimensions, 8 inches diameter by 8 inches deep 20.00 



As our Ovens are made in our shops, v/e are prepared to make them in 

 any shape, size or design that may be desired. We use Heavy Copper for all 

 Ovens coming in contact with water or the moisture from steam, when steam 

 heated. All Sheet Metal Ovens other than those which must be of Copper 

 are made of American Ingot Iron. This material lasts much better than the 

 Russian Iron or plain steel which pits. For the outer coverings we use the 

 Hard finished asbestos product, Transite, which is the best known insulator. 



