196 Guide for Making Frames. 
with and three-fourths of an inch from the edge. To the 
bottom of this, screw a semi-oval piece of hoop-steel ( Fig. 
71, 6,4), which shall bend around and press against the 
square strips. The ends of this should not reach quite to 
the bottom of the board. Near the ends of this spring 
fasten, by rivets, « leather strap an inch wide (Fig. 71, @), 
which shall be straight when thus riveted. These dimen- 
sions are for frames eleven and one-fourth inches square, 
Fic. 71. 
Block for making Gallup Frames, 
outside measure, and must be varied for other sizes. In- 
stead of the iron and strap, some use two pieces of wood 
with a central pivot. The upper ends of these levers are 
united by a strong elastic cord, so that the lower ends are 
constantly pressed against the side pieces of the block. 
Recently we have used in such blocks, both for frame and 
section-making, a single hard-wood strip, a little shorter 
than the distance between the strips ¢ and e. This is piv- 
oted at the center to the center of the block. This is a 
very simple way to hold the side pieces firmly against the 
strips e, e. We have only to turn this lever, 
To use this block, we crowd the end-bars of our frames 
between the steel springs (Fig. 71, 4, 5), and the square 
strips (Fig. 71, e, ¢); then lay on our top-bar and nail, 
