CENTRAL SCIENTIFIC CO., CHICAGO, U. S. A. 



385 



9846. 

 9847. 



9848. 

 9849. 



9850. 



Nos. 9848-9 (Patented). 



OVENS, Drying, Single Wall, DeKhotinskyT Continued. 

 Temperature Control: Our new bimetallic thermo-regulator is made from invar-brass ribbon, 

 and can be set at any desired temperature from that of the surrounding atmosphere to the 

 maximum heat capacity of the oven, about 140C. The precision of action of this thermo- 

 regulator is *4 C. The make-and-break contact of the thermo-regulator is located outside the 

 oven to prevent the possibility of ignition of inflammable gases developed in drying, which 

 often occurs when the contact is made and broken inside the oven. A pilot lamp on top 

 of the oven is connected in series with the thermo-regulator, enabling the operator to deter- 

 mine at a glance whether the oven is regulating. 

 These ovens can be operated on either A.C. or D.C. circuits. 



DRYING OVENS, Single Wall, DeKhotinsky, Electrically Heated and Regulated, as described 

 above, complete with two extra cartridge fuses, Hubbell receptacle, and 5 feet of flexible 

 asbestos covered cord with separable Hubbell attachment plug. 



Width, Depth, Height, Vol. Inside, Shelf Space, Voltage, 



nches Inches Inches Cu. Inches Sq. Inches A.C. & D.C. Price 



11 10 12 1320 220 110 $40.00 



11 10 12 1320 220 220 42.50 



DRYING OVENS, Single Wall, DeKhotinsky, Electrically Heated and Regulated, of same 

 construction as Xo. 9846, but larger, with two doors and with eight 115-watt heating units. 

 With same equipment as No. 9846. 



Vol. Inside, Shelf Space, Voltage, 

 Cu. Inches Sq. Inches A.C. & D.C. 

 3024 430 110 



3024 430 220 



No. 7526D 

 110 



Width, Depth Height, 



Inches Inches Inches 



18 12 14 



18 12 14 



EXTRA HEATING UNITS for Xos. 9846 to 9849, 115 watt capacity. 

 For volts . 



Price 

 60.00 

 62.50 

 7527D 

 220 

 1.25 

 B 

 15 

 .15 



Each 1.00 



FUSES, for Nos. 9846 to 9849, enclosed cartridge type, 250 volts. No A 



Amperes 10 



Each 15 



OVENS, Drying, Despatch Electric, especially designed for moisture determinations in soils, 

 flour, etc. They are practically uniform in temperature, having a three-point regulating 

 switch, whereby the temperature can be held at 212F. Provided with top and bottom 

 ventilators, which greatly expedite the drying process. Made of polished steel with angle 

 iron corner construction, and with all fittings nickel-plated, with 1-inch solid heat retaining 

 walls of asbestos, and Despatch Open Wire Electric Heaters, wound with special alloy which 

 will not oxidize nor become brittle. Complete with four removable screen shelves and tested 



thermometer. No A 



Outside dimensions, inches 14x14x18 



Inside dimensions, inches 11x6x16 



9860. 

 9861. 



Size of door, inches. 



Number of shelves 



Current consumption first heating, watts. 

 Current consumption continuous, watts. . 



For 110 volts 



For 220 volts 



6x11 



2 



200 



100 



75.00 



75.00 



