THE FRAME AND ITS FITTINGS i^s 



Standard frames, as sold by different dealers, vary 

 somewhat in the means adopted to build them up from 

 the separate pieces. Probably the most popular form is 

 the dovetailed frame, which has the great advantage of 

 being easily put together. Another form, invented by 

 Mr E. H. Taylor, Welwyn, Herts, is specially recom- 

 mended (see illustration). The side bars being ^ an 

 inch thick makes the frame especially strong and rigid, 

 in addition to which the side bars are grooved, giving 

 the foundation additional support. Not being dove- 

 tailed, a special frame block is used with these frames 

 whilst nailing them together, so that the completed 

 frame shall be perfectly square. 



The construction of this block will be readily under- 

 stood on referring to the drawing (page 37). Upon a 

 piece of well-seasoned yellow pine, I inch thick by 20 

 inches long and 5i inches wide, two blocks, AA, 

 of ^ inch wood, are securely screwed ; these blocks 

 being 3 inches wide by 4I inches long. Great care 

 should be taken that the two inner sides of these are 

 exactly 14 inches apart (the width of a standard frame), 

 also that they are strictly parallel with each other. 

 Next in order follow the two pieces, CC, I2f inches 

 long, I inch wide, and | of an inch thick. These two 

 pieces are chamfered, as shown in the sectional draw- 

 ing, and are intended to act as guides for the two 

 sliding pieces, DD, which require to be 6 inches long, 

 and chamfered on the edges to correspond with CC. 

 The two small blocks, BB, are exactly 17 inches apart, 

 each block being set back l| inches from the inner face 

 of A A. A hard wood square wedge, tapering from 

 about I-J inches to f of an inch, and about 4 inches 

 long, completes the outfit. E is a square hole cut 

 through the base board upon which the frame block is 

 built. 



Any number of frames can be readily nailed together 



