384 
FRAMES, SELF-SPACING 
wooden projections of the regular Hoff¬ 
man sometimes split off when the frames 
are pried apart. For localities where this 
condition prevails the metal-spaced is rec¬ 
ommended. It can be used interchangeably 
with the regular Hoffman. The spacers on 
this frame are stamped out of metal and 
must necessarily be accurate. The form of 
its construction in the shape of the letter U 
bending over the top-bar projection pre¬ 
vents the latter from breaking thru care¬ 
less handling. 
STAPLE-SPACED FRAMES. 
There are a few others who prefer frames 
with staples for side-spacers as here shown. 
Others use nails in place of staples; but 
the latter with their rounding edges allow 
the frames to slide past each other more 
readily. 
OTHER SELF-SPACING DEVICES. 
Various spacing devices have been sug¬ 
gested at different times. A few of these 
are presented here, the reader being left to 
judge of their relative merits. It will not 
be necessary to describe them in detail, as 
the engravings make plain their manner of 
construction and use. 
Hive-rabbet spacers. 
