The netting should consist of common mosquito gauze, or, if this cannot be had, any thin cloth may be substituted. It should be sewed fast to the iron wire, from hinge to hinge, and then, with the hoops resting in its groove, the netting should be drawn over the platform, and tacked to the bottom of the groove, on its remaining half. It should rest loosely over the platform to allow plenty of space for the bird.
But one more addition, and the trap is finished. We have mentioned the use of elastics in other varieties: they are of equal use here, and should be attached to the hoop as seen at (a) in the section drawing, the remaining ends being fastened to the bottom of the groove, as there indicated. These elastics should be placed on both sides, and stretched to such a tension as will draw the hoop quickly from one side to the other.
It will now be easy to set the trap. Draw the hoop back to the opposite end, tucking the netting into the groove; lower the spindle over it, resting it between the two little plugs, and securing its end beneath the catch on the platform. If the bait, consisting of bread-crumbs, berries, insects, or the like, be now sprinkled on the platform, the trap is ready for its feathered victim. It will easily be seen that the slightest weight on either side of this poised platform will throw the catch from the end of the spindle, and release the hoop and the platform in an instant is covered by the net, capturing whatever unlucky little bird may have chanced to jump upon it. This is a very pretty little trap, and will well repay the trouble of making it.
A SIMPLER NET TRAP.
Much ingenuity has been displayed in the construction of bird traps of various kinds, but often the ingenuity has been misplaced, and the result has been so complicated as to mar its usefulness for practical purposes. The examples of net traps presented in this volume are so simple that the merest tyro can readily understand them. What can be more so than the present example, and yet it is as sure in its effect, and surer than those other varieties of more complicated construction. One necessary element in a trap of any kind is, that the bearings are slight and that they spring
easily. To obtain this requisite it is necessary to overcome friction as much as possible, using only a small number of pieces, and having as few joints and hinges only as are absolutely necessary. The present variety possesses advantages on this account. It is constructed somewhat on the principle of the ordinary steel trap, and also resembles in other respects the one we have just described, although much simpler. We give only a section drawing, as this will be sufficient. The long side of a flat board of about eight by sixteen inches is shown at (a); (b) indicates the loops of a bent wire, to which the netting is attached, as in the trap just described, the loops being fastened to the board as in the other variety; (g) consists of a small bit of wood an inch or so in length and half an inch in width. It should be tacked on to the middle of the one end of the board and project about a half inch above the surface. To the top of this the spindle (c) should be attached by a leather or staple hinge. The spindle should be of light pine, five inches in length and a quarter of an inch square, bevelled; on the under side of one end (d) is the catch or bait piece, and should be whittled out of a shingle or pine stick of the shape shown, the width being about a half an inch or less. One side should be supplied with a slight notch for the reception of the spindle, and the other should project out two or three inches, being covered on the top with a little platform of pasteboard, tin, or thin wood either glued or tacked in place. To attach this piece to the main board, two small wire staples may be used, one being inserted into the bottom end of the piece and the other being hooked through it, and afterward tacked to the bottom of the trap, thus forming a loop hinge. Another method is to make a hole through the lower tip of the bait piece by the aid of a red-hot wire, as seen at (d), afterwards inserting a pin and overlapping its ends with two staples driven into the bottom board, as shown at (e). In our last mentioned net trap the spring power consisted of rubber elastic, and the same may be used in this case, if desired, but by way of variety we here introduce another form of spring which may be successfully employed in the construction of traps of various kinds. It is shown at (o) and consists merely of a piece of tempered hoop iron, so bent as to act with an upward pressure. It should be about three inches long by half an inch wide. About three-quarters of an inch should be allowed for the two screws by which it is to be attached to the board. The rest should be bent upward and thus tempered by first heating almost to redness, and then cooling in cold water.
One of these springs should be fastened to the board on each side, directly under the wire and quite near the hinge, in the position shown in the main drawing. Now draw back the net, lower the spindle and catch its extremity in the notch of the bait piece, and the trap is set as in our illustration. Sprinkle the bait on the platform, and lay the machine on the ground where birds are known to frequent; and it is only a matter of a few hours or perhaps minutes, before it will prove its efficacy. In order to prevent the bird from raising the wire and thereby escaping, it is well to fasten a little tin catch (f) at the end of the board. This will spring over the wire and hold it in its place.
THE UPRIGHT NET TRAP.
The following is another novelty in the way of a bird-trap, somewhat similar to the one we have just described, in its manner of working.