]|50 ■ AUSTRALIAN BEE LORE AND BEE CULTURE- 



side bars, keeping: them in three different heaps. It will not be 

 necessary for the side-pieces to be of one uniform thickness. The 

 springs will adjust themselves to any differences that may occur. 

 Fix to the work-bench one or two bottom bars according to 

 whether a single or double block is to be used. Place the bottom 

 of the block so that the fixed bottom bars shall stand in the 

 measurement G H. If it be a double block it will stand without. 

 holding. Over the one or two fixed bars, when the block is placed 

 ill position, insert the end-pieces for the frame so the springs will 

 grip them firmly to the sides of the bar-frame block. Next, place 

 the top bar in the shoulders A E and B E, shown in diagram No. 

 1. The side pieces should come flush to the point E. Nail the 

 top bar to each end and three of the four sides will be firmly 

 fixed, then invert the block for the insertion of the bottom bar, 

 and fix it in the ends in like manner to that of the top. 



This bar-frame block, besides being applied to the use named, 

 is also a permanent gauge for all portions of bar-frames. In dia- 

 gram No. 1, A B is the gauge for the top bar; G H that for the 

 bottom bar ; and E F, less the thickness of the bottom bar, is 

 the gauge for the end-pieces. 



It may be a diflicult matter in country places to obtain or 

 make the spiral springs referred to. In that case the main-spring 

 of an old American clock will be found as serviceable as the spiral 

 spring . 



The clock spring must be cixrved, and have sufficient strength 

 in it to keep the end-pieces firmly against sides of the bar-frame 

 block. On more than one occasion when even the clock spring was 

 not obtainable, 1 have substituted a piece of iron hoop which did 

 remarkably well for the time being. 



