Pressing wire traps – mole traps are distinguished by the diversity of the action of various designs. They are characterized by a pressing device in the form of one or two levers or frames, which are compressed in a free-wheeling self-force under the influence of a multi-turn spring, less often – a flat spring or torsion spring.
Pressing wire traps, molehills of longitudinal action, device and manufacture, dimensions and shape of a mole trap.
The pressure traps of the mole trap are guarded with the help of different types of guards (hook, rod, etc.) and guards (hanging swinging, pedal action, etc.). The purpose of crushing traps is to kill moles by grabbing them by the head, neck or body. Install them in a hole or at its entrance, on a trail or at a bait. Some pressure traps have a guard on the guard to strengthen the bait in the middle of the trap catching area.
Single-sided longitudinal wire trailers, device.
From this group, wire-pressure traps are widely spread – mole-traps of unilateral longitudinal action (type a). They have two parts: a frame with a round bore, a spring and a pressure lever made of one piece of steel wire with a cross section of 3.5 mm, a suspended wire (from a 1.5 mm wire) guard in the form of a shield with a hook in the upper part.
The models of these molehills differ in form of gripping devices at the end of the pressure lever. So, in model b, the pressure lever ends in a hook-shaped bend. Such a gripping device has poor holding capacity, and moles that have fallen under it often turn out. To increase the catchability of these mole traps, they were artificially given a large pressing force and manufactured with an alarming force of up to 10 kg.
For the manufacture of these molehills, a steel wire with a diameter of at least 4 mm was required, which, in turn, made their production difficult. They became heavy, uncomfortable to use during camouflage, catchability decreased. Moles did not frustrate overly alert guards (with a trigger guard of up to 2 kg). The molehills of this design are often made “humpbacked”, with a protruding above the ring and a curved ridge and pressure lever, and the spring curl and the inlet ring are twisted clockwise. This should not be done..
Very often in the work of mole traps, carelessly made or poorly designed guards with a hanging loop longer than 18 mm are a big obstacle. With a single or double excessively long hook (more than 7 mm) or with a hook at and below the top of the guard’s flap. Such guards do not provide an opportunity to alert the airplanes, while the guard has a delay in operation, as they rest against the pressure lever with one shoulder of the shield.
Mole head with a longitudinal frame, device and manufacture, dimensions and shape of a trap for moles.
Mole traps with a longitudinal frame have no such drawbacks, so they are widely used. Mole traps are made by artisanal workshops and by many hunters, therefore, the following is a detailed description of the most rational high-catch mole catcher. They make it from a spring wire with sufficient elasticity with a cross section of 3.5 + -0.2 mm.
A thinner wire does not provide the necessary pressing force, and a thicker one increases the difference between the net workforce and the alarming force, which entails an increase in the trigger force of the guard, i.e., a loss of its sensitivity. An excessively thick wire increases the mass of the samovol, metal consumption, complicates the production, and when used in the field – masking.
The guard is made of soft wire with a cross section of 1.4 + -0.1 mm. From a thinner one, it rusts and quickly loses strength, and from a thicker one it is more difficult to make. The spring should have two curls with an internal diameter of at least 15 + -1 mm. With one curl and with a smaller diameter, the spring is overstressed and rapidly weakens. When the number of curls is more than two and with a larger diameter, the necessary pressing force is not provided.
The spring is wound counterclockwise. Then, when guarding with the right hand, the pressure lever is to the right of the upper crest of the molehill frame, which makes it possible for the left hand to unhinderedly and with utmost sensitivity to catch the guard on the frame of the pressure lever. The inlet ring is also bent counterclockwise with an inner diameter of 45 mm. This allows a gripping frame 25 mm wide to be used at the end of the pressure arm.
Rational dimensions (mm) and the shape of a mole head with a longitudinal frame.
The input ring is bent at a distance of 115 mm from the center of the spring and in a plane at an angle of 90 degrees to the upper crest of the mole catcher. Hunters increase this angle to 110 degrees so that the end of the frame above the bottom of the input ring protrudes by 5 mm. This inclined position of the input ring makes it easy to install the moot in the mole.
The pressure lever should end with a rectangular frame (bent at a distance of 100 mm from the center of the spring) with transverse sides 25 + -1 mm and longitudinal 39 + -1 mm. Such a frame covers the entrance ring quite wide and prevents the mole from twisting out of the air. For moleholes made of wire finer than 3.3 mm, the pressure arms are shortened by 10 mm.
The double-hook guard should have the shape and dimensions shown in the first figure. If the workshop has a press and millimeter-iron sheets, then the guards can be stamped according to the shape and size shown in position in drawing. Depending on the size of the mole head housing and the length of the pressure lever, the distance between the hole for hanging the guard and the tooth for gripping the lever in the raised extreme upper position is determined.
Krotolovki of this design, made of a spring wire with a cross section of 3.3 and 3.5 mm and an angle of 55 degrees between the comb and the pressure lever in the free position, had a useful pressing force of 2-2.5 kg, an alarming force of 4-5 kg, shock force of 8-12 kg and trigger trigger weight 10-100 g.
Such airplanes are much more convenient when adjusting, guarding and installing in the mole. Field trials have shown that they are superior to all other standard molehills. They can be used in the field of even larger Siberian mole. In this case, the molehills are best made from a 4 mm spring wire, with an input ring with a diameter of 55 mm and a spring ridge and shoulder with a pressure frame increased by 20%.
Mole catches increase.
To increase the molecat catch, many hunters sought to minimize the trigger force of the guards. For this purpose, additional devices were used – a cranked hook-shaped gatehouse, positions g, d, f in the first figure. Mole traps with an extra guard have a very sensitive guard, but the square entrance (ring) turned out to be inconvenient when installing and disguising the wolfhole in the mole.
In field trials, these mole traps had no advantage over the standard mole trap. Making a square entrance and an additional gatehouse complicates the production, and it is inconvenient to guard them. Therefore, there is no point in doing them. A known design of a stamped mole head with a spring of sheet steel (position e) Such a mole trap is very inconvenient for installation and camouflage in the mole and there is no reason to recommend it for production.
Based on materials from the book Hunting Samolov and Unauthorized Fishing. Directory.
Gerasimov Yu. A.