This section is from the book "The Balance Of Nature And Modern Conditions Of Cultivation", by George Abbey. Also available from Amazon: The Balance Of Nature And Modern Conditions Of Cultivation.
The Snare-spring Trap (Fig. 85, G) consists of a peg (r), a piece of straight stick (s) about 4 in. long, with one end chisel-pointed and a slit in the other end, a piece of whipcord (t), fine brass wire noose (u), and a rod about 4 ft. long. The noose wire is secured to the whipcord, this to the chisel pointed stick about an inch from the end as shown, and the other end of the string made fast to the small end of the rod. To set the trap: drive the peg into the ground about 7 in. from the rat's run (w) and to within an inch of the notch (x), then thrust the rod into the ground about 2½ ft. from it and on the same side as the peg, then bend down the rod and place the chisel-pointed stick under the hook (y), fixing in the notch. Put the wire in the slit and adjust the noose in the exact centre of the run, 1 in. from the ground. A rat or other animal pushing its head through the noose displaces the chisel-pointed stick and the rod springs up, suspending the victim.
Fig. 85. - Snare-spring and Barrel Rat Traps.
G, snare-spring trap: r, peg; s, straight stick; t, whipcord; u, wire noose; v, rod; w, rat run; x notch; y, hook. H, barrel trap: z, falls; a, bait; b, pivots; c, lead; d, button turned under fall; e, the same turned from under fall. i, section of top and bottom of barrel: f, water.