Fig. 11

14. Lead Weights.—The weight of lead is about 80 per cent. greater than that of cast-iron; hence, lead sash weights must be resorted to where the construction of the pockets is too narrow to permit the use of iron weights, or where heavy plate glass is used. They are also used in cases where the sash are very wide and low, as here a short weight must be used in order to obtain the necessary travel for the sash.

Lead weights can be procured in either round or square shapes, and of any diameter or measurement to suit existing conditions, but they are generally made to special order. A wrought- or malleable-iron eye, or fastening, for applying the cord or chain is usually inserted at the top. The cost of lead weights, however, is generally five times as great as that of iron weights.

15. Sectional Sash Weights.—There is a form of sash weight in the market known as the Walda sectional weight, which is illustrated in [Fig. 11]. This weight, as will be observed, is so arranged that units or sections may be detached or added, as desired, to diminish or to increase the weight. Such a weight can be nicely adjusted to counterbalance any sash, and has the advantage over the cast-iron weight in that each part is interchangeable and no mistake can be made in ordering, as the necessary weight for any sash can be made up on the site.

TABLE V

WEIGHT, DIAMETER, AND LENGTH
OF SASH WEIGHTS

Weight
Pounds 		Diameter
Inches		 Length
Inches		 Weight
Pounds		 Diameter
Inches		 Length
Inches
 31⅜ 8½121¾20  
 3½1⅜ 9¾131¾21½
 41⅜11  142  18  
 4½1⅜12¼152  19  
 51½12  162  20¼
 5½1½12½172  21½
 61½14  182  22½
 6½1½15  192  23½
 71½16  202  24½
 7½1½17  212⅛25  
 81½18  222¼23  
 8½1⅝16½232¼24  
 91⅝17½242¼25  
 9½1⅝18½252¼25½
101⅝19½262¼26  
10½1⅝20½272¼27  
111⅝21½282¼28  
11½1¾19  292¼28½

FINISHING HARDWARE

METALS AND THEIR MANIPULATION