Booster springs for coil spring trap

Claim 2

In a two-spring trap having a pair of jaws, a U-shaped spring frame with a bight portion to one side of the jaws and a pair of opposed legs extending from the bight portion laterally toward the jaws, a follower plate pivotally mounted on each leg and engaged with the jaws, a single coil spring mounted on each leg between the follower plate and the bight portion and engaging the follower plate with a resilient biasing force, each leg including a portion extending beyond the follower plate a length substantially less than the length of leg receiving the coil spring; the improvement comprising means for increasing extension of said legs beyond the follower plates, said means comprising a pair of spring mounting members, each spring mounting member being elongated and including a tubular open end portion telescopically receivable over the extending portion of one of said legs of the spring frame, and a pair of second coil springs, each mountable on one of the spring mounting members for biasing engagement with a follower plate, each second coil spring including a first laterally extending tensioning leg engageable with a follower plate for enhancing the biasing force thereon, and a second laterally extending spring stabilizing leg engageable with a fixed portion of the trap.

Claim 3

In the construction of claim 1, the further improvement wherein said means for increasing extension of said legs comprises a rigid base, each of said spring mounting members having a second end remote from the open end portion and adjacent said base, and means engaged with said second ends and mounting said spring mounting members on said base for lateral adjustment relative to each other.

Claim 4

In the construction of claim 2, the further improvement wherein said means mounting said spring mounting members on said base for lateral adjustment includes a pair of elongated slots defined through said base, and a retaining pin engaged through each slot and into the second end of one of the spring mounting members.

Claim 5

A booster spring kit having component parts capable of being assembled to a two-spring trap incorporating a pair of jaws, a U-shaped spring frame with a bight portion to one side of the jaws and a pair of opposed legs extending from the bight portion laterally toward the jaws, a follower plate pivotally mounted on each leg and engaged with the jaws, a single coil spring mounted on each leg between the follower plate and the bight portion and engaging the follower plate with a resilient biasing force, and wherein each leg includes a portion extending beyond the follower plate a length substantially less than the length of leg receiving the coil spring; the kit comprising the combination of means for increasing extension of said legs beyond the follower plate, said means comprising a pair of spring mounting members, each spring mounting member being elongated and including a tubular open end portion telescopically receivable over the extending portion of one of the legs of the spring frame, and a pair of second coil springs each mountable on one of the spring mounting members for biasing engagement with a follower plate, each second coil spring including a first laterally extending tensioning leg engageable with a follower plate for enhancing the biasing force thereon, and a second laterally extending spring stabilizing leg engageable with a fixed portion of the trap.

Claim 6

A booster spring kit having component parts capable of being assembled to a two-spring trap incorporating a pair of jaws, a U-shaped spring frame with a bight portion to one side of the jaws and a pair of opposed legs extending from the bight portion laterally toward the jaws, a follower plate pivotally mounted on each leg and engaged with the jaws, a single coil spring mounted on each leg between the follower plate and the bight portion and engaging the follower plate with a resilient biasing force, and wherein each leg includes a portion extending beyond the follower plate a length substantially less than the length of leg receiving the coil spring; the kit comprising the combination of means for increasing extension of said legs beyond the follower plate, said means comprising a pair of spring mounting members, each spring mounting member being elongated and including a tubular open end portion telescopically receivable over the extending portion of one of the legs of the spring frame, and a pair of second coil springs each mountable on one of the spring mounting members for biasing engagement with a follower plate, each second coil spring including a first laterally extending tensioning leg engageable with a follower plate for enhancing the biasing force thereon, and a second laterally extending spring stabilizing leg engageable with a fixed portion of the trap.

Claim 7

The kit of claim 4 wherein said means for increasing extension of said legs comprises a rigid base, each of said spring mounting members having a second end remote from the open end portion and adjacent said base, and means engaged with said second ends and mounting said spring mounting members on said base for lateral adjustment relative to each other.

Claim 8

The kit of claim 5 wherein said means mounting said spring mounting members on said base for lateral adjustment includes a pair of elongated slots defined through said base, and a retaining pin engaged through each slot and into the second end of one of the spring mounting members.