e upright catch piece should
be fastened. This piece, as will be seen in our engraving, should
be cut spreading at the bottom so as to admit of being secured to
the platform by two brads, the tip being cut to a point. The total
length of this piece should not be over two and a half inches. When
tacked in place, a third brad should be inserted between the other
two and exactly in the centre of the side of the platform. This
latter brad is to act as the pivot, or hinge, and should project
about a quarter of an inch, as seen at (_a_). On the opposite edge
of the platform another larger brad should be driven, having its
end filed to a blunt point, as in (_b_). If the filing would be
too tedious, a plug of hard wood of the required shape would answer
every purpose. The upright props which support the platform should
be cut of thin wood. Let one be an inch and a half long and half
an inch wide, the other being an inch in length. Each should have
one end whittled to a point, which will admit of its being inserted
in a gimlet hole in the bottom of the trap. These gimlet holes
should be made at least half an inch in depth. Make the first at
about an inch or so from the back of the trap. Into this insert
the shorter pieces, broadside front. Lay the pivot brad of the
platform on the top of this piece and insert over it a small wire
staple, as seen at (_a_). Elevate the platform evenly and determine
the spot for the other gimlet hole, which should be directly beneath
the point of the filed brad. Be sure that it is in the middle of
the board, so that the platform may set squarely, and be perfectly
parallel with the sides. Insert the remaining prop in its place,
and the platform is complete. The overhanging spindle now requires a
little attention. This should be whittled off on each side, bringing
it to a point at the tip. On each side of the spindle a long plug
should then be driven into the back piece, as our illustration
shows. These should be far enough apart to allow the spindle to
pass easily between them. The _setting_ of the trap is plainly shown
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in our engraving. The spindle being lowered between the plugs is caught
finely on the tip of the catch-piece. The blunt point at the opposite
end of the platform should have a slight hollow made for it in the
prop against which it presses. If the platform be now strewn with
bait, the little machine is ready. It is certainly very simple and
will be found very effective.