EQUIPMENT OF AN RCiG I'.KKA K 1 Ni ; PLANT. 1.°, 



available and individual preferences. It may be niade of J-inch 

 pine boards battened on the under side and covered neatly with zinc 

 0.0201 inch thick, 1 tin or nickel-plated copper 0.01S8 inch thick, or 

 monel metal 0.0201 inch thick. The lower side of the table may be 

 covered with the metal also, if desired. Boiler iron { inch thick, which 

 may be painted with white enamel, or iron on which the enamel has 

 been applied by a baking process, is also used for table tops without 

 a foundation of wood. The enamel in each case chips, so that it must 

 be renewed every season. Sometimes heavy galvanized iron is riv- 

 eted at the edges to an angle iron frame and used without the wood 

 support. Occasionally white glass, cemented into an angle iron 

 frame, is used for a table top. The sides of the central opening for 

 the funnels should, in this case, be lined with metal to prevent 

 chipping. 



The legs are made of 1-mch and the braces and crosspieces of 

 f-inch galvanized iron pipes (inside measurements). They are fas- 

 tened to the table by means of flanges, using square-headed bolts 

 countersunk in the wood before the metal covering is laid. In tops 

 without wood, flat-headed bolts countersunk in the metal are used. 

 The center of the top of each leg should be 3 inches away from the 

 edge of the table. Angle iron legs bolted at the corners to the angle 

 iron frames are used for tables having glass tops. The legs should 

 be furnished with a roller or ball castor 1 inch hi diameter. Tables 

 made for more than four girls require central supporting legs which 

 should be braced on both sides and connected with crosspieces. 



The tray rest is mounted on a galvanized iron pipe or nickel- 

 plated brass tubing 8 inches long and f inch in diameter (outside 

 measurements), which passes through the table hi to a pipe flange 

 screwed to the under side of the table. The metal covering of the 

 table is soldered to the pipe. The tray rest may be made of two 

 pieces of Y@--inch by 1-inch bar iron welded together at right angles 

 at the center, with the ends turned up | inch. The two arms are 

 made to receive the breaking tray, the distance between the turned- 

 up ends being 10 niches on the arm parallel with the short side of the 

 table and 9 inches on the other arm. Countersunk flat rivets are used 

 to fasten the arms to a pipe flange connected at the top of the pipe 

 support. If preferred, the tray rest may be made of metal cut in 

 the shape of a diamond, with the corners turned up to hold the 

 breaking tray in position. Circular rests are also used. 



SHELL FUNNEL. 



(Figs. 11 and 12.) 



The shell funnel fits loosely in an opening hi the center of the 

 breaking table, in front of the rests for holding the breaking trays. 



i Equivalent to No. 10 sheet zinc gauge. 



