AIDS TO SUCCESS. 79 



and then the sides of the bar attempting to return 

 to their former position will hold the foundation 

 securely. 



Another method is to drive two wire nails into the 

 centre of a board, i inch or so apart, and then file 

 off the heads. If the frame be then held bottom 

 upwards, and placed on the board so that the nails 

 pass through the saw-cut about the middle of the 

 bar, a slight turn either way will cause the saw-cut 

 to open, and then the sheet of foundation, held upside 

 down, may be gently dropped into the saw-cut till it is 

 stopped by touching the board. On turning the frame 

 back again the sides of the bar will press upon the 

 foundation and hold it securely. 



In order to do away with the saw-cut while at the 

 same time providing a means of holding the founda- 

 tion securely in the middle 

 of the top bar, Messrs. 

 Abbott Bros, devised and 

 patented the following 



method as shown in Fig. 20. A saw-cut is run in 

 the middle of the underside of the top bar, nearly 

 through ; and by the side of that groove, another but 

 wider is cut. The edge of the sheet of foundation is 

 then placed in the former, and to hold it securely a 

 wedge is driven into the latter, which forces the thin 

 wall between the two grooves upon the foundation 

 and holds it as in a vice. 



Mr. Howard provides in one frame saw-cuts or 

 grooves in the side bars and one in the top bar 

 (Fig. 21). While the frame is being held in the frame- 

 block, complete, except for the bottom bar, the founda- 



mm^^mii 



