(2) For Vertical Retorts 



(a) a vertical retort shall be equipped \j±th a bleeder at 

 the end of the retort opposite the steam inlet „ This 

 bleeder shall be wide opoi during the entire process. In 

 the case of very sraall retorts (less than 30 inch diameter 

 and less than fair feet im. depth) a tJ.iree-thi.rty-second 

 inch bleeder may be iisedo 



"(h) Thermometer Bleeders. 



Bleeders for All ThermomeT^ers on All Types of Retorts, 



A one -sixteenth inch or larger bleeder hole shall be kept- open 

 for the free escape of st'iam on a.H thermometer fittii'^s unless 

 thermometer bulbs are set vrt^olly within the shell of retort pro- 

 per. The b].eeders sha].l be so located as to prrvide a fiall flow 

 of steam past the sensitive part of the the/raomete.'' bilbo 



"(i) Vents for Removal of Air Frori Retorts During Comixg-Up Period. 



Vents 3hall be installed arid cpe rat-id .in su-'-i a way that all 

 the air is removed from the T'vtort before timing "f the pro- 

 cess is started. 



"(j) Stacking Equipment for Use in Hr,rizoi-.^:.l and Vertical Retorts. 



(1) Stacking equipment (baskets., trays^ gondclas; etr.) for 

 all types of containers in dicc. ntiauou:< rvtorts,. when cans or 

 jars are stacked in a vertical petition., shall be preferably 

 of strap iroi), Wlien perforated sheet metal baskets are used, 

 the perforations in the bottoms shall be at least oiie iiich 

 holes on one and three-fourth inch centers or their equivalent, 

 unless other equipment has been approvedn 



(2) If dividers are used, they shall be of ;vide mesh material, 

 such as fish nets or onion sacks, or of strap iron or sheet 

 metal having perforations at least the equivalent of one-inch 

 holes on one and three-foarths inch centers. Close meshed 

 cloth dividers are not permitted. 



337 



